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					                                                                                     NCSX Engineering CHIT Tracking Log


          Design Review                                                                       Review Board
      [Cog Engr/RLM/Chair]         Rvw Date   #         Chit Finding [Originator]           Recommendation                 Project Disposition         Responsibility            Status              Due Date
Field Period Assembly Plan Peer   3/30/2004   1   Need to have Viola and Chrzanowski      Concur                  Mike Viola and Jim Chrzanowski          Viola,                                    Complete
    Review                                        review schedule in detail for timing of                             have discussed projected         Chrzanowski                                   2/15/08
       Cole/Dudek/Nelson                          fixture deliveries with mockups and                              schedules and are planning on
                                                  training. [Dudek]                                                            this basis.
Field Period Assembly Plan Peer   3/30/2004   2   Where are the TF Coils sub-             Concur                   Station 5 at D-site after MC coil   T. Brown / M.                                Complete
    Review                                        assemblies going to be assembled?                              fab area is removed and Sta. 6. at         Viola                                    2/15/08
       Cole/Dudek/Nelson                          The west side of the Test Cell is                                  C-site. Sufficient space and
                                                  available, but the overhead crane                                 handling equipment has been
                                                  won't reach. [Chrzanowski]                                                   addressed.
Field Period Assembly Plan Peer   3/30/2004   3   Identify weights of each assembly       Concur                    The weights of the completed        Cole, Mike        Complete - M. Cole's      Complete
    Review                                        component and completed assembly.                                 assemblies will be determined         Viola             spreadsheet has          2/15/08
       Cole/Dudek/Nelson                          [Viola]                                                            using Pro Engineer. Actuall       Chrzanowski      estimated weights and is
                                                                                                                  weights will be determined after                      being updated with actual
                                                                                                                               fabrication                               weights as they become
                                                                                                                                                                                available.
Field Period Assembly Plan Peer   3/30/2004   4   Schedule for Jobs 1808/1810              Concur                 The mag sensor was found to be       Project Team                                 Complete
    Review                                                           -Where is the                                   not feasible and scrapped.                                                      2/15/08
       Cole/Dudek/Nelson                          mag. Sensor installation in the                                Fit-up checks are addressed in the
                                                  schedule?                                                           Sta. 5&6 assembly plans.
                                                                      -Where is fit-
                                                  check of mod-coil subassemblies in
                                                  the schedule. [Neilson]

Field Period Assembly Plan Peer   3/30/2004   5   Should perform a tolerance analysis    Concur                      Has been performed and             Cole, Mike                                  Complete
    Review                                        (vs. tolerance budget) to determine if                             presented as part of the                                                        2/15/08
       Cole/Dudek/Nelson                          the tolerances required are                                     consstruction feasiblilty review.
                                                  achievable with the manufacturing
                                                  and assembly processes selected.
                                                  Would also serve as a map to
                                                  troubleshoot the assembly process if
                                                  it is determined [Dudek]

Field Period Assembly Plan Peer   3/30/2004   6   1) Identify lay down and storage area Concur                       Adequacy space has been            Brown, Tom                                  Complete
    Review                                        for all components and completed      Need to address                     resolved.                                                                2/15/08
       Cole/Dudek/Nelson                          sub-assemblies 2) If schedule
                                                  changes such that parts accumulate,
                                                  is a problem? [Neilson]

Field Period Assembly Plan Peer   3/30/2004   7   At some point, the field period          Concur                     The field period assembly         Cole, Mike                                  Complete
    Review                                        assembly trajectory needs to be                                  trajectory will be placed under                                                   2/15/08
       Cole/Dudek/Nelson                          under configuration control. [Neilson]                         configuration control by using the
                                                                                                                  skeleton model and locking the
                                                                                                                                models




      Status Date: 12/23/2004                                                                                1
                                                                                      NCSX Engineering CHIT Tracking Log


          Design Review                                                                        Review Board
      [Cog Engr/RLM/Chair]         Rvw Date   #        Chit Finding [Originator]             Recommendation               Project Disposition            Responsibility            Status       Due Date
Field Period Assembly Plan Peer   3/30/2004   8   What is the flammability of              Concur                 Microtherm has been changed to        Goranson, Paul                         Complete
    Review                                        Microtherm concern is sparks from                                  Aerogel; treatment will be                                                 2/15/08
       Cole/Dudek/Nelson                          welding. [Viola]                                                performed prior to installation to
                                                                                                                   elimiinate flammabilty issues.
                                                                                                                       Will be noted in design
                                                                                                                           documentation.




Field Period Assembly Plan Peer   3/30/2004   9  The platform needs to address the         Concur                 PPPL Platform safety requirements      Brown, Tom       In progress.
    Review                                       safety access to the 20' difference in                             will ba adhered to in the design.
       Cole/Dudek/Nelson                         elevation needed for access for
                                                 insulation and welding. [Viola]
Field Period Assembly Plan Peer   3/30/2004   10 Need to look at deflection of parts/as    Concur                 Deflection issues of the fixtures      Brown, Tom       In progrerss       Resolve prior
    Review                                       fixture during assembly. [Dudek]                                 will be reviewed as the design of                                             to PDR
       Cole/Dudek/Nelson                                                                                              the fixtures are developed.
Field Period Assembly Plan Peer    3/30/04    1   Need to have Viola and Chrzanowski      Concur                               see chit 1                   Viola,
  Review Cole/Dudek/Nelson                        review schedule in detail for timing of                                                                Chrzanowski
                                                  fixture deliveries with mockups and
                                                  training. [L. Dudek]                                                                                                                      Resolve prior to
                                                                                                                                                                                            PDR
Field Period Assembly Plan Peer    3/30/04    2   Where are the TF Coils sub-              Concur                             see chit 2                  Cole, Mike
  Review Cole/Dudek/Nelson                        assemblies going to be assembled?
                                                  The west side of the Test Cell is
                                                  available, but the overhead crane                                                                                                         Resolve prior to
                                                  won't reach. [J. Chrzanowski]                                                                                                             PDR
Field Period Assembly Plan Peer    3/30/04    3   Identify weights of each assembly        Concur                             see chit 3                  Cole, Mike
                                                                                                                                                                                            Resolve prior to
  Review Cole/Dudek/Nelson                        component and completed assembly.
                                                                                                                                                                                            PDR
                                                  [M. Viola]
Field Period Assembly Plan Peer    3/30/04    4   Schedule for Jobs 1808/1810 -            Concur                             see chit 4                  Cole, Mike
  Review Cole/Dudek/Nelson                        Where is the mag. Sensor installation
                                                  in the schedule? -Where is fit-check
                                                  of mod-coil subassemblies in the                                                                                                          Resolve prior to
                                                  schedule? -bake out temperature:                                                                                                          PDR
Field Period Assembly Plan Peer    3/30/04    5   Should perform 150º C change to
                                                  Job P1-201 saysa tolerance analysis      Concur                             See chit 5                  Cole, Mike
  Review Cole/Dudek/Nelson                        (vs. tolerance budget) to determine if
                                                  the tolerances required are
                                                  achievable with the manufacturing                                                                                                         Resolve prior to
                                                  and assembly processes selected.                                                                                                          PDR




      Status Date: 12/23/2004                                                                                 2
                                                                                     NCSX Engineering CHIT Tracking Log


          Design Review                                                                    Review Board
      [Cog Engr/RLM/Chair]        Rvw Date   #          Chit Finding [Originator]        Recommendation                       Project Disposition          Responsibility               Status            Due Date
Field Period Assembly Plan Peer   3/30/04    6   1) Identify lay down and storage area Concur                                     see chit 6                Cole, Mike
  Review Cole/Dudek/Nelson                       for all components and completed         Need to address
                                                 sub-assemblies 2) If schedule
                                                 changes such that parts accumulate,
                                                 is a problem? [H. Neilson]
                                                                                                                                                                                                      Resolve prior to
                                                                                                                                                                                                      PDR
Field Period Assembly Plan Peer   3/30/04    7   At some point, the field period          Concur                                  see chit 7                 Cole, Mike
  Review Cole/Dudek/Nelson                       assembly trajectory needs to be
                                                 under configuration control. [H.
                                                 Neilson]                                                                                                                                             Resolve prior to
                                                                                                                                                                                                      PDR
Field Period Assembly Plan Peer   3/30/04    8  What is the flammability of               Concur                                  see chit 8                 Cole, Mike
  Review Cole/Dudek/Nelson                      Microtherm concern is sparks from                                                                                                                     Resolve prior to
                                                welding. [M. Viola]                                                                                                                                   PDR
Field Period Assembly Plan Peer   3/30/04    9 The platform needs to address the          Concur                                  see chit 9                 Cole, Mike
  Review Cole/Dudek/Nelson                      safety access to the 20' difference in
                                                elevation needed for access for                                                                                                                       Resolve prior to
                                                insulation and welding. [M. Viola]                                                                                                                    PDR
Field Period Assembly Plan Peer   3/30/04    10 Need to look at deflection of parts/as    Concur                                 see chit 10                 Cole, Mike
  Review Cole/Dudek/Nelson                      fixture during assembly. [L. Dudek]                                                                                                                   Resolve prior to
                                                                                                                                                                                                      PDR
VVSA Product Spec Review          4/8/2004   1   Consider whether we can live with        Concur                     No additional requirements for          Blanchard       Being Evaluated            1/30/2006
                                                 lower structural allowables if we do                                WBS12 except addition of
  Goranson/Reiersen/Schmidt                      not do 100% radiography to                                          requirements into an ICD.
                                                 determine the weld joint efficiency.
                                                                [W. Reiersen]
VVSA Product Spec Review          4/8/2004   2   If grinding of welds is permitted leak   Concur                     Capability of bakeout is already                   In
                                                                                                                                                      Blanchard/Goranson work                              30-Jan
                                                 test must be performed after                                        part of man access port. Pumping
  Goranson/Reiersen/Schmidt                      grinding/polishing operation.                                       port not part of WBS12. The
                                                 [L.Dudek]                                                           requirement to bake ducts needs
                                                                                                                     mention in SRD.

VVSA Product Spec Review          4/8/2004   3   In shipping section: add instructions    Concur                     Needs clarification before local     Sichta/Goranson Complete. FDR calls for        2/3/2006
                                                 to protect sealing surfaces during                                  I&C FDR                                                proportional control on
  Goranson/Reiersen/Schmidt                      shipping. [L. Dudek]                                                                                                       heaters to reprecide
                                                                                                                                                                            overheatings.
VVSA Product Spec Review          4/8/2004   4   Seal surface finish should be            Concur                     Needs to be done before                                being evaluated
                                                                                                                                                        gettlefinger/goranson                            2/3/2006
                                                 addressed (either on dwg. Or                                        insulation FDR
  Goranson/Reiersen/Schmidt                      inspection). [L. Dudek]
VVSA Product Spec Review          4/8/2004   5   Consider requiring that the VVSA he      Concur                     Work on ports complete, port        gettlefinger/gora   complete                     15-Feb
                                                 scanned with a laser scanner. We                                    extensions not part of MIE. Port    nson
  Goranson/Reiersen/Schmidt                      will provide one (along with an                                     12 captured in chit 9
                                                 operator) if they do not have
VVSA Product Spec Review          4/8/2004   6   Revise it structure and labeling reduce Concur (Agree but
                                                 capability (the motivation is to or                                 captured by chit 9                  goranson            complete                      15-Feb
                                                 section 4. [W. Reiersen]                 check if they are
  Goranson/Reiersen/Schmidt                                                               magnetic)
VVSA Product Spec Review          4/8/2004   7   Confirm that the permeability of a       Concur ( agree, but        Connection will be added to VV      goranson            scheduled                     20-Feb
                                                 30% conflat flange weld joint will       beware of carrying fault   drawing and interface mentioned
  Goranson/Reiersen/Schmidt                      provide acceptable permeability,         current through vacuum     in ICD
                                                 instability investigate the availability seal.
                                                 of 316 conflat flanges. [W. Reiersen]




      Status Date: 12/23/2004                                                                                    3
                                                                               NCSX Engineering CHIT Tracking Log


        Design Review                                                                   Review Board
     [Cog Engr/RLM/Chair]     Rvw Date   #          Chit Finding [Originator]         Recommendation                Project Disposition          Responsibility               Status        Due Date
VVSA Product Spec Review      4/8/2004   8   Verify that material is not identified Concur                 VV has capability of heating to     goranson            complete
                                             in more than one place, i.e. in the                           150 C with either helium or hot
  Goranson/Reiersen/Schmidt                  spec and on the drawings.                                     nitrogen. Operators will decide
                                             Requirements should be in only one                            heat source. Choice does not
                                             place. [W. Reiersen]                                          affect VV design or ICD.
VVSA Product Spec Review      4/8/2004   9   Verify that the Master Schedule        Concur                 may require double boot             gettlefinger/gora   under evaluation, not    15-Feb
                                             Procurement Plan, and Final                                                                       nson                part of WBS12 MIE
  Goranson/Reiersen/Schmidt                  Assembly Plan address the assembly -
                                              fit spool pieces -disassemble -
                                             machine spool pieces -reassemble
                                             sequence. [W. Reiersen]

VVSA Product Spec Review      4/8/2004   10 In the Quality conformance               Concur                DAC and ICD will be updated         goranson            DAC complete, ICD         1-Feb
                                            inspections section, state that the                                                                                    complete
  Goranson/Reiersen/Schmidt                 vacuum performance shall be
                                            checked after grinding and polishing
                                            is completed. [W. Reiersen]

VVSA Product Spec Review      4/8/2004   11 Add Section 5 - to preparation for     Concur                  Drawings will indicate 3/8"         goranson            complete                  8-Feb
                                            delivery. This section should address
  Goranson/Reiersen/Schmidt                 protection on sealing surfaces from
                                            scantling during shipping. [W.
                                            Reiersen]
VVSA Product Spec Review      4/8/2004   12 Move the quality conformance           Concur                  Diagnostic people need to review    johnson             in work                   1-Feb
                                            inspection requirements from
  Goranson/Reiersen/Schmidt                 3.2.1.1, and 3.2.1.2 to the
                                            appropriate section under 4.2 (quality
                                            conformance inspections).
                                                      [W. Reiersen]
VVSA Product Spec Review      4/8/2004   13 A port naming convention should be     Concur                  captured by chit 18                 goranson
                                            established. [W. Reiersen]
  Goranson/Reiersen/Schmidt
VVSA Product Spec Review      4/8/2004   14 Names should be defined the just      Concur                   needs to be captured by ICD or      goranson            evaluation in progress    1-Feb
                                            time they are used or in on Appendix.                          SRD
  Goranson/Reiersen/Schmidt                  The naming needs to be consistent
                                            in the contract, SOW, spec, and
VVSA Product Spec Review      4/8/2004   15 Ref. 3.1 System Definition should add Concur                   calculations need to be performed   goranson/cole       complete                 15-Feb
                                            dwg. Numbers to description to                                 to determine port capability
  Goranson/Reiersen/Schmidt                 clarify the definitions. [L. Dudek]
VVSA Product Spec Review      4/8/2004   16 Section 2 - Applicable documents -    Concur                   model will be run on NASTRAN        dahlgren/goranso complete                    15-Feb
                                            should include all and only the                                and results added to DAC 007        n
  Goranson/Reiersen/Schmidt                 documents referenced in subsequent
                                            sections. [W. Reiersen]
VVSA Product Spec Review      4/8/2004   17 Make sure the Master Schedule            Concur                Port diagnostics ICD will add       goranson            complete                 30-Jan
                                            Procurement Plan, spec tree explicitly                         details on max loads permitted on
  Goranson/Reiersen/Schmidt                 includes the NB transition duct. [W.                           ports and VV including future
                                            Reiersen]                                                      upgrades
VVSA Product Spec Review      4/8/2004   18 Consider how a bill of material might    Concur                needs to be on ICD                  goranson/cole/jo complete                     1-Feb
                                            be generated and used. [W.                                                                         hnson
  Goranson/Reiersen/Schmidt                 Reiersen]
VVSA Product Spec Review      4/8/2004   19 3.2.2 Suggest re-wording weld finish     Concur
                                            requirements to interior welds shall
  Goranson/Reiersen/Schmidt                 be ground as required to assure that
                                            weld leads do not prostrate more




      Status Date: 12/23/2004                                                                          4
                                                                                  NCSX Engineering CHIT Tracking Log


        Design Review                                                                       Review Board
     [Cog Engr/RLM/Chair]     Rvw Date    #        Chit Finding [Originator]              Recommendation            Project Disposition   Responsibility   Status      Due Date
VVSA Product Spec Review      4/8/2004    20 If seams are radiographed, consider        Concur
                                             not requiring visual at 8X
  Goranson/Reiersen/Schmidt                  magnification. Visual should still be
                                             required. [F.Malinowski]
                                             WITHDRAWN BY ORIGINATOR
VVSA Product Spec Review      4/8/2004    21 4.9 Verification of cutting, forming,      Concur
                                             sending we need to know what
  Goranson/Reiersen/Schmidt                  requirements are imposed. [F.
                                             Malinowski]
VVSA Product Spec Review      4/8/2004    22 Include leak rate criteria 1 x 10 -9 for   Concur
                                             each port extension check 3 x 10 -8        Consider by discussing
  Goranson/Reiersen/Schmidt                  for each VVSA (period assembly) [M.        with Blanchard and Mike
                                             Viola]                                     Zarnstorff.

VVSA Product Spec Review      4/8/2004    23 If "no detectable leaks are allowed"       Concur
                                             with a "10 -10 sensitivity" then a
  Goranson/Reiersen/Schmidt                  base pressure should be stated for
                                             the test. [M. Viola]
VVSA Product Spec Review      4/8/2004    24 VVSA - the vendors currently               Other
                                             understand the VVSA to not include         Resolve through
  Goranson/Reiersen/Schmidt                  the spool. We should keep this def.        discussions with M. Viola
                                             [M. Viola]
VVSA Product Spec Review      4/8/2004    25 Resolve electro-polishing with Hutch.      Concur
                                                     [J. Schmidt]
  Goranson/Reiersen/Schmidt
VVSA Product Spec Review      4/8/2004    26 Ref. Para. 3.1.2 need to clarify what      Concur
                                             is the VVSA description has to tie into
  Goranson/Reiersen/Schmidt                  reference drawings. [P.
                                             Heitzenroeder]
VVSA Product Spec Review      4/8/2004    27 When grinding welds - should the           Concur
                                             interior of the port extensions weld to
  Goranson/Reiersen/Schmidt                  the vessel be included. [M. Viola]
   Final Assembly Plan Peer   4/15/2004   1 Need to demonstrate that adequate           Concur                                             Cole, Mike               Resolve prior
   Review Cole/Nelson/Perry                  clearance among and between all the                                                                                       to PDR
                                             components exists during final
                                             assembly. [Perry]
   Final Assembly Plan Peer   4/15/2004   2 Need to document the assembly               Concur                                             Cole, Mike               Resolve prior
   Review Cole/Nelson/Perry                  tooling requirements and                                                                                                  to PDR
                                             demonstrate that they are reasonable
                                             and achievable and that budget exists
                                             to pay for them. [Perry]

   Final Assembly Plan Peer   4/15/2004   3   Document locations for all tooling        Concur                                             Cole, Mike               Resolve prior
   Review Cole/Nelson/Perry                   balls. Document need for in-process                                                                                      to PDR
                                              sensors (motion, proximity, etc.)
                                              [Perry]


   Final Assembly Plan Peer   4/15/2004   4   Document assembly requirements for        Concur                                             Cole, Mike               Resolve prior
   Review Cole/Nelson/Perry                   the base support structure. [Perry]                                                                                      to PDR



   Final Assembly Plan Peer   4/15/2004   5   Document assembly plan in a signed- Concur                                                   Cole, Mike               Resolve prior
   Review Cole/Nelson/Perry                   off final assembly document. [Perry]                                                                                     to PDR




      Status Date: 12/23/2004                                                                                  5
                                                                                NCSX Engineering CHIT Tracking Log


      Design Review                                                                     Review Board
   [Cog Engr/RLM/Chair]       Rvw Date   #        Chit Finding [Originator]           Recommendation                Project Disposition    Responsibility           Status     Due Date
Final Assembly Plan Peer     4/15/2004   6   Cryostat base needs to be on the field Concur                                                  Cole, Mike                       Resolve prior
Review Cole/Nelson/Perry                     period before they are put together.                                                                                               to PDR
                                             [Brown]



Final Assembly Plan Peer     4/15/2004   7   Explain risk management approach         Concur                                                 Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                     for the almost inevitable insulation                                                                                               to PDR
                                             pinches. Is this a minor issue?
                                             [Gettelfinger

Final Assembly Plan Peer     4/15/2004   8  Need to develop a method to localize      Concur              This is                            Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    a vacuum leak in the field joint so       an urgent matter which                                                                    to PDR
                                            that it can be repaired. [Dudek]          should be incorporated
Final Assembly Plan Peer     4/15/2004   9 Per Peer Review, current weight of         Concur              The                                Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    filed period is 78,000 lbs.               design of the filed                                                                       to PDR
                                            Significantly greater than current        period assembly is
                                            crane capability. Upgrade to crane is     proceeding as if there is
                                            not in scope at this time.                not a problem
Final Assembly Plan Peer     4/15/2004   10 Establish a "weight coordinator" to       Concur               See                               Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    watch that field period lift weight       also chit #9                                                                              to PDR
                                            stays within crane limits.
                                            [Heitzenroeder]


Final Assembly Plan Peer     4/15/2004   11 Develop an electrical and coolant coil    Concur                                                 Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    test plan integrated with machine                                                                                                   to PDR
                                            assembly. [Heitzenroeder]
Final Assembly Plan Peer     4/15/2004   12 Verify lift-over clearance for solenoid   Concur                                                 Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    is adequate.      [ Heitzenroeder]                                                                                                  to PDR

Final Assembly Plan Peer     4/15/2004   13 WBS 7 should be reviewed to assure     Concur                                                    Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    that sufficient resources and schedule                                                                                              to PDR
                                            exist for the multiple levels (PFA
                                            joining, port extensions, NB duct,
                                            etc) of leak checking called out in
                                            plan. [Perry]
Final Assembly Plan Peer     4/15/2004   14 Tom Brown's presentation on spool      Concur                                                    Cole, Mike                      Resolve prior
Review Cole/Nelson/Perry                    piece to clamp minimum clearance                                                                                                    to PDR
                                            indicated that the spool piece would
                                            need to be supported by a
                                            cantilevered arm to rotate it into
                                            position. Will the stress on the spool
Twisted Racetrack Coil FDR   10/15/04    1 No details presented on how "real                                                              Williamson, Dave Closed            COMPLETED
Williamson/Reiersen/Dudek                   time" determination of surface error                                                                                                 Approved
                                            (+/-) provided. Readiness of                                                                                                     by Larry Dudek
                                            metrology effort for TRC Winding
                                            needs to be established

Twisted Racetrack Coil FDR   10/15/04    2   The metrology measurement system                                                             Williamson, Dave                   COMPLETED
Williamson/Reiersen/Dudek                    needs to be demonstrated before the                                                                                                 Approved
                                             winding of the coil.                                                                                                            by Larry Dudek




    Status Date: 12/23/2004                                                                                     6
                                                                                 NCSX Engineering CHIT Tracking Log


       Design Review                                                                   Review Board
    [Cog Engr/RLM/Chair]      Rvw Date   #         Chit Finding [Originator]          Recommendation               Project Disposition            Responsibility             Status                 Due Date
Twisted Racetrack Coil FDR    10/15/04   4   The specification for electrical                                                                    Williamson, Dave During the real time          COMPLETED
Williamson/Reiersen/Dudek                    isolation needs to be clarified.                                                                                     measuring of a layer              Approved
                                             Properties of adhesive tape needs to                                                                                 [that will be performed       by Larry Dudek
                                             be determined. Electrical tests need                                                                                 (3) times during
                                             to be in the procedures.                                                                                             winding], it adds an
                                                                                                                                                                  additional 3-4 hours to
                                                                                                                                                                  the winding time per
                                                                                                                                                                  measurement series.




Twisted Racetrack -Coil FDR   ######     3   Provide schedule for demonstrating                                                                  Chrzanowski, Jim                               COMPLETED
Williamson/Reiersen/Dudek                    measurement capability required for                                                                                                                    Approved
                                             TRC winding. TRC not even                                                                                                                          by Larry Dudek
                                             measured yet. [Reiersen]
Twisted Racetrack -Coil FDR   ######     5   Need to figure out how to dissect coil                        The clamps will keep the winding      Chrzanowski, Jim The winding clamps will    COMPLETED
Williamson/Reiersen/Dudek                    w/o losing registration of winding to                         packs registered to the tee during                     remain on the coil/casting     Approved
                                             tee. Consideration should be given to                         dissection. The Romer arm will                         during the cutting         by Larry Dudek
                                             more exotic, non-destructive                                  be used to provide a record of                         operations. This should
                                             options. [Reiersen]                                           how the winding packs were                             help to restrain the
                                                                                                           registered to the tee prior to                         bundle to tee registration
                                                                                                           cutting.                                               during dissection.




Twisted Racetrack -Coil FDR   ######     6   Consider winding a complete coil to                           This has been adopted for the         Chrzanowski, Jim Agree. The TRC trial          COMPLETED
Williamson/Reiersen/Dudek                    establish shimming requirements.                              TRC. The project still needs to                        winding was completed.            Approved
                                             Then rewind the coil using differences                        develop a plan for measuring the                       Evaluation of results will    by Larry Dudek
                                             in clamping pressure to control                               trial winding and figuring out how                     determine whether or not
                                             boundary. [Reiersen]                                          that data will be used for the                         trial windings will be
                                                                                                           actual winding. (Nelson)                               performed for types A, B
                                                                                                                                                                  and C.

Twisted Racetrack -Coil FDR   ######     7   Resolve whether the relief gets filled                        The relief was filled with RTV (or    Chrzanowski, Jim The TRC grooves were          COMPLETED
Williamson/Reiersen/Dudek                    with RTV or Roving. (Roving would                             equivalent) prior to winding to                        sealed with "Then seal"           Approved
                                             mechanically lock the winding which                           avoid mechanically locking the                         caulking. This caulking       by Larry Dudek
                                             may not be good). [Reiersen]                                  winding to the tee.                                    will prevent the epoxy
                                                                                                                                                                  from locking the winding.
                                                                                                                                                                   The groove has been
Twisted Racetrack -Coil FDR   ######     8   Lead blocks - it was mentioned                                G11CR (cryogenic grade) will be       Chrzanowski, Jim All of the lead fillers for   COMPLETED
Williamson/Reiersen/Dudek                    during the presentation that this                             used which provides more                               the production coils will         Approved
                                             would be made of G10 or G11. For                              consistent properties than G10                         be fabricated using G-11.     by Larry Dudek
                                             production coil, since G10 tends to                           (Williamson)
                                             become neutron-activated cause "hot
Twisted Racetrack -Coil FDR   ######     9   Need to qualify the sil-foil carbon                           Braze procedure will be qualified     Chrzanowski, Jim Process has been              COMPLETED
Williamson/Reiersen/Dudek                    tong Braze procedure or write an                              and documented. Technicians will                       qualified and is now a            Approved
                                             exception. [Dudek]                                            be qualified to perfomr this                           part of the PPPL              by Larry Dudek
                                                                                                           procedures. (Chrzanowski)                              welding/brazing
                                                                                                                                                                  procedure.
Twisted Racetrack -Coil FDR   ######     10 Measure signal in diagnostic flux                              Diagnostic flux loops will be taped   Chrzanowski, Jim Flux loop leads are           TBD
Williamson/Reiersen/Dudek                   loops while coil is energized. Check                           in place and measured. They will                       provided. Diagnostic
                                            conformity of flux loops after coil                            be checked for shorts. Signal                          group must
                                            fabrication is complete. Verify that                           measurements while coil is                             provide/coordinate




    Status Date: 12/23/2004                                                                            7
                                                                                 NCSX Engineering CHIT Tracking Log


       Design Review                                                                    Review Board
    [Cog Engr/RLM/Chair]      Rvw Date    #       Chit Finding [Originator]            Recommendation               Project Disposition          Responsibility             Status                  Due Date
Twisted Racetrack -Coil FDR   ######     11 The diagnostic flux loops need to be                            (See response to Chit #10)          Chrzanowski, Jim Investigating the              By 1/30/2005
Williamson/Reiersen/Dudek                   accurate, located (~1/16") at the                                                                                    possibility of using simple
                                            outer "corners" of the winding pads!                                                                                 inexpensive gauge pads
                                               A groove should be put it into the                                                                                to position the flux loops.
                                            surface on which the loop should be                                                                                   Further work is required.
Twisted Racetrack -Coil FDR   ######     12 Provide epoxy strainer on fluid line to                         Epoxy strainer will be added        Chrzanowski, Jim Epoxy filters have been        COMPLETED
Williamson/Reiersen/Dudek                   coil distribution manifold.                                     (Chrzanowski)                                        added to epoxy delivery            Approved
                                            [Gettelfinger]                                                                                                       system.                        by Larry Dudek


Twisted Racetrack -Coil FDR   ######     13 Additional potential issue: 1) cladding                         The TRC will be used to determine   Chrzanowski, Jim The installation of the        By 1/30/2005
Williamson/Reiersen/Dudek                   and chill plates too time consuming.                            how much time will be required to                    cladding appears
                                            [ Dudek]                                                        apply the cladding and chill                         workable, however
                                                                                                            plates. Improvements will be                         additional hands-on work
                                                                                                            made as required. (Chrzanowski)                      along with redesign
                                                                                                                                                                 efforts is required prior to
                                                                                                                                                                 determining the actual
                                                                                                                                                                 installation and
                                                                                                                                                                 fabrication cost &
                                                                                                                                                                 schedule.

Twisted Racetrack -Coil FDR   ######     14 Add to the assembly procedure the                               Electrical tests will be added to   Chrzanowski, Jim Test has been added.           COMPLETED
Williamson/Reiersen/Dudek                   electrical tests required to assure that                        the assembly procedure                                                                  Approved
                                            no shorts are present in the copper                             (Chrzanowski)                                                                       by Larry Dudek
                                            coolant system. [Brown]
Twisted Racetrack -Coil FDR   ######     15 Use a conductivity meter or some                                Use of an in-process "whisker"      Chrzanowski, Jim Agreed. This test is           COMPLETED
Williamson/Reiersen/Dudek                   other device to monitor the                                     sensor will be investigated                          incorporated in the                Approved
                                            resistance to ground (MCWF) during                              (Chrzanowski)                                        procedure during               by Larry Dudek
                                            chadding installation. [Nelson]                                                                                      installation of cladding.

Twisted Racetrack -Coil FDR   ######     16 Take lots of pictures.   [Dudek]                                Extensive digital phots will be     Chrzanowski, Jim Concur. New camera has         COMPLETED
Williamson/Reiersen/Dudek                                                                                   taken (Chrzanowski)                                  been procured for the              Approved
                                                                                                                                                                 field. This camera will be     by Larry Dudek
                                                                                                                                                                 used by all field crews
                                                                                                                                                                 during fabrication.
Twisted Racetrack -Coil FDR   ######     17 Consider using fiber optic strain                               Fiber optic strain gages will be    Chrzanowski, Jim Agreed. These will be          COMPLETED
Williamson/Reiersen/Dudek                   gages. [Nelson]                                                 installed on the TRC. We will                        incorporated in the TRC            Approved
                                                                                                            figure out if and how to pay for                     per FDR                        by Larry Dudek
                                                                                                            signal conditioning later.                           recommendations.
                                                                                                            (Chrzanowski)



Twisted Racetrack -Coil FDR   ######     18 Consider renting another Romer arm                              Will be considered during winding   Chrzanowski, Jim Agree. The need for the        COMPLETED
Williamson/Reiersen/Dudek                   for 3rd winding station. [Nelson]                               the 1st production coil                              3rd. Romer will be                 Approved
                                                                                                            (Chrzanowski)                                        evaluated once two             by Larry Dudek
                                                                                                                                                                 winding lines are
Twisted Racetrack -Coil FDR   ######     19 Develop an insulation schematic to                                                                  Chrzanowski, Jim                                TBD
Williamson/Reiersen/Dudek                   show what is connected. [Nelson]




    Status Date: 12/23/2004                                                                             8
                                                                                  NCSX Engineering CHIT Tracking Log


       Design Review                                                                   Review Board
    [Cog Engr/RLM/Chair]      Rvw Date    #      Chit Finding [Originator]            Recommendation               Project Disposition          Responsibility            Status                 Due Date
Twisted Racetrack -Coil FDR   ######     20 Use a grounded paddle to check for                                                                 Chrzanowski, Jim Device has been              COMPLETED
Williamson/Reiersen/Dudek                   whiskers. [Nelson]                                                                                                  fabricated and will be           Approved
                                                                                                                                                                tested on the TRC.           by Larry Dudek
Twisted Racetrack -Coil FDR   ######     21 Electrical insulation looks marginal.                          Shim material will be distributed   Chrzanowski, Jim The turn to turn             COMPLETED
Williamson/Reiersen/Dudek                   [Nelson]                                                       to provide improved turn-to-turn                     insulation plan has been         Approved
                                                                                                           voltage standoff capability.                         reviewed and has deemed      by Larry Dudek
                                                                                                           Thinner glass tape will be                           appropriate
                                                                                                           procured and available as shim
                                                                                                           material for the production coils
                                                                                                           (Chrzanowski)


Twisted Racetrack -Coil FDR   ######     22 Assure resistive brazing qualification                                                             Chrzanowski, Jim See chit #9                  COMPLETED
Williamson/Reiersen/Dudek                   (procedure and individual) are                                                                                                                       Approved
                                            completed before brazing on TRC.                                                                                                                 by Larry Dudek
                                             [Malsbury]




Twisted Racetrack -Coil FDR   ######     23 Use of FM Laser Radar is at the                                Feasibility of this approach and    Chrzanowski, Jim This is not being planned.   COMPLETED
Williamson/Reiersen/Dudek                   conceptual planning level. This is not                         alternatives for measuring                            NO ACTION REQUIRED              Approved
                                            "In the Bag! [Gettelfinger]                                    displacement will be investigated                                                 by Larry Dudek
                                                                                                           (Nelson/Gettelfinger)


Twisted Racetrack -Coil FDR   ######     24 Consider vacuum only impregnation.                             Vacuum only impregnation is         Chrzanowski, Jim Disagree: The VPI            COMPLETED
Williamson/Reiersen/Dudek                   [Cole]                                                         considered ill-advised.                              procedures are based on          Approved
                                                                                                                                                                R&D activities and will      by Larry Dudek
                                                                                                                                                                include a combination of
                                                                                                                                                                both vacuum and
                                                                                                                                                                pressure. These decisions
                                                                                                                                                                will be made during the
                                                                                                                                                                VPI operation at the
                                                                                                                                                                discretion of the VPI
                                                                                                                                                                Director.

Twisted Racetrack -Coil FDR   ######     25 Provide an in-line electrical test at                                                              Chrzanowski, Jim See chit #19                 COMPLETED
Williamson/Reiersen/Dudek                   the insulated cable to check for                                                                                                                     Approved
                                            copper "whiskers". [Heitzenroeder]                                                                                                               by Larry Dudek




Twisted Racetrack -Coil FDR   ######     26 Define all in process, pre-VPI, and                            All tests will be conducted in      Chrzanowski, Jim Agreed. This has been        COMPLETED
Williamson/Reiersen/Dudek                   post VPI electrical tests and Peer                             accordance with reviewed and                         added in the                     Approved
                                            Review to beginning of work.                                   apporved procedures                                  manufacturing                by Larry Dudek
                                            [Heitzenroeder]                                                (Chrzanowski)                                        procedures.




    Status Date: 12/23/2004                                                                            9
                                                                                      NCSX Engineering CHIT Tracking Log


         Design Review                                                                      Review Board
      [Cog Engr/RLM/Chair]        Rvw Date   #         Chit Finding [Originator]          Recommendation            Project Disposition    Responsibility              Status               Due Date
Coil Test Facility Plumbing FDR   ######     1   Relief valves vent into the room,      Concur                                             Gettelfinger,    Relief's will vent to a        15-Mar-05
  Gettelfinger/vonHalle/Perry                    oxygen deficiency potential must                                                              Geoff        hermetic dump line to
                                                 thoroughly evaluated. [Perry]                                                                              exhaust system



Coil Test Facility Plumbing FDR   ######     2   IH needs at least 1 week notice        Concur                                             Gettelfinger,    Complete.
  Gettelfinger/vonHalle/Perry                    before the foaming operation begins                                                           Geoff                                       Complete.
                                                 to complete preparations to support
Coil Test Facility Plumbing FDR   ######     3   this activity. Note CTF Hazards
                                                 Comments on the that the results of     Other, Out of scope for                           Gettelfinger,    Agreed.                        15-Mar-05
  Gettelfinger/vonHalle/Perry                    Analysis must be resolved, and the     FDR …Required for                                      Geoff
                                                 document must be approved by the       operations.
                                                 Safety Review Committee (SRC) prior
                                                 to commencing CTF operations.
Coil Test Facility Plumbing FDR   ######     4   For upper pressure control use a       Concur                                             Gettelfinger,    Agreed.                        15-Mar-05
  Gettelfinger/vonHalle/Perry                    pressure regulator/control valve                                                              Geoff
                                                 (offers finer control and smaller
                                                 control band than RV) [Kalish]




Coil Test Facility Plumbing FDR   ######     5   Make adjustable relief valve           Concur                                             Gettelfinger,    Relief's will vent to a        15-Mar-05
  Gettelfinger/vonHalle/Perry                    visible/audible to tell when it is                                                            Geoff        hermetic dump line to
                                                 venting [Nelson]                                                                                           exhaust system



QA Audit #0406 NCSX Design        ######     1.7 Concern with timely statusing and                                                        Malsbury, Judy    See response to finding      By 5/31/2005
          Control                                closure of Chits. [Malsbury]                                                                               1.6. J. Malsbury to verify
                                                                                                                                                            that corrective action is
QA Audit #0406 NCSX Design        ######     1.8 Concern with timely statusing and                                                        Malsbury, Judy    See response to finding      By 5/31/2005
          Control                                closure of Chits. [Malsbury]                                                                               1.6. J. Malsbury to verify
                                                                                                                                                            that corrective action is
                                                                                                                                                            being accomplished.

QA Audit #0406 NCSX Design        ######     1.1 Documents are in draft form that                                                         Reiersen, Wayne SEMP, SRDs are being           By 1/31/2005
          Control                                should have been finalized.                                                                              finalized and will be          (Revised from
                                                                                                                                                          signed by mid-January.          12/17/2004)
                                                                                                                                                          Criteria docs already
                                                                                                                                                          signed and posted.
QA Audit #0406 NCSX Design        ######     1.1 Design basis calculations for the                                                        Reiersen, Wayne All will be formally           By 3/5/2005
          Control                                MCWF were not all finalized and                                                                          documented and checked
                                                 approved.                                                                                                in analysis reports by the
                                                                                                                                                          Comprehensive Modular
                                                                                                                                                          Coil FDR.

QA Audit #0406 NCSX Design        ######     1.1 Recommendation made that plans                                                           Reiersen, Wayne All plans and procedures       By 1/28/2005
          Control                                and procedures be streamlined.                                                                           for design control will be
                                                                                                                                                          reviewed and modified as
                                                                                                                                                          appropriate (not
                                                                                                                                                          finalized).
QA Audit #0406 NCSX Design        ######     1.1 Recommendation made that plans                                                            Simmons, Bob A peer review of these           By 2/25/2005
          Control                                and procedures be streamlined.                                                                           plans and procedures will
                                                                                                                                                          be held.




      Status Date: 12/23/2004                                                                                  10
                                                                               NCSX Engineering CHIT Tracking Log


       Design Review                                                                Review Board
    [Cog Engr/RLM/Chair]     Rvw Date    #       Chit Finding [Originator]         Recommendation        Project Disposition   Responsibility              Status                Due Date
QA Audit #0406 NCSX Design   ######     1.1 Recommendation made that plans                                                     Simmons, Bob     The plans and procedures      By 3/25/2005
          Control                           and procedures be streamlined.                                                                      for design control will be
                                                                                                                                                finalized using the output
                                                                                                                                                of the peer review.




QA Audit #0406 NCSX Design   ######     1.2 The Configuration Management Plan                                                  Simmons, Bob     The ProE/INTRALINK            By 1/15/2005
          Control                           and supporting guides and                                                                           system has a very             (Revised from
                                            procedures will be reviewed and                                                                     disciplined process of         12/17/2004)
                                            revised to incorporate 3D models                                                                    handling revisions to
                                                                                                                                                drawings and models and
                                                                                                                                                this is being followed
                                                                                                                                                EXACTLY since
                                                                                                                                                ProE/INTRALINK will not
                                                                                                                                                permit otherwise. What
                                                                                                                                                has not been adequately
                                                                                                                                                done is to fully document
                                                                                                                                                this in NCSX d

QA Audit #0406 NCSX Design   ######     1.3 NCSX-PROC-004 will be revised to                                                   Simmons, Bob     The Project response          By 1/31/2005
          Control                           eliminate configuration item                                                                        made it very clear that       (Revised from
                                            identification.                                                                                     “the formal practice of        12/17/2004)
                                                                                                                                                configuration
                                                                                                                                                identification has never
                                                                                                                                                been done and should not
                                                                                                                                                be required.” PROC-004
                                                                                                                                                is in the process of being
                                                                                                                                                revise to clarify what is a
                                                                                                                                                Configuration Item and
                                                                                                                                                should be finalized

QA Audit #0406 NCSX Design   ######     1.4 Concerns were expressed about the                                                  Simmons, Bob     Both the DMP and the          By 1/31/2005
          Control                           relationship between the Ops Center                                                                 SEMP have been revised        (Revised from
                                            and the NCSX Records Mgmt System                                                                    to clarify the relationship    12/17/2004)
                                                                                                                                                between the Ops Center
                                                                                                                                                and the NCSX Records
                                                                                                                                                Management System.
                                                                                                                                                 Both documents are in
                                                                                                                                                final review and will be
                                                                                                                                                posted for signature next
                                                                                                                                                week.




     Status Date: 12/23/2004                                                                        11
                                                                                   NCSX Engineering CHIT Tracking Log


       Design Review                                                                        Review Board
    [Cog Engr/RLM/Chair]       Rvw Date     #       Chit Finding [Originator]              Recommendation                 Project Disposition            Responsibility               Status              Due Date
QA Audit #0406 NCSX Design     ######      1.9 Concerns with NCSX Design Review                                                                          Simmons, Bob     Systems Engineering          By 1/31/2005
          Control                              processing of chits                                                                                                        Support Manager will         (Revised from
                                                                                                                                                                          obtain Head Engineering       12/17/2004)
                                                                                                                                                                          and Technical
                                                                                                                                                                          Infrastructure
                                                                                                                                                                          concurrence on NCSX-
                                                                                                                                                                          PROC-004
QA Audit #0406 NCSX Design     ######      2.1 Training on the NCSX systems for                                                                          Simmons, Bob COMPLETED. REV 1                  COMPLETED
          Control                              design control has not been defined                                                                                        ISSUED IN EARLY
                                               or provided.                                                                                                               DECEMBER.
QA Audit #0406 NCSX Design     ######      2.2 Training on the NCSX systems for                                                                          Simmons, Bob Training will be provided        By 5/19/2005
          Control                              design control has not been defined                                                                                        to all project personnel
                                               or provided.                                                                                                               involved in design control
                                                                                                                                                                          activities.
QA Audit #0406 NCSX Design     ######      1.5 The status of all chits from the design                                                                  Tyrrell, Marianne A consolidated tracking      By 1/31/2005
          Control                              reviews for the MCWF and VVSA FDR                                                                                          log for all CHITs has been   (Revised from
                                               will be reviewed.                                                                                                          developed and is in the       12/17/2004)
                                                                                                                                                                          process of being
                                                                                                                                                                          statused. A revised
                                                                                                                                                                          disposition status and
                                                                                                                                                                          copy of this CHIT
                                                                                                                                                                          Tracking Log will be
                                                                                                                                                                          available next week
                                                                                                                                                                          (e.g.,, completed,
                                                                                                                                                                          planned for next design
                                                                                                                                                                          review , expected
QA Audit #0406 NCSX Design     ######      1.6 All open chits will have milestones                                                                      Tyrrell, Marianne NCSX Procedure 004           By 1/31/2005
          Control                              associated with them by which the                                                                                          ready for signature.         (Revised from
                                               chit should be closed. NCSX plans                                                                                          NCSX Engineering              12/17/2004)
                                               and procedures will be appropriately                                                                                       Administrator will use
                                               modified to reflect this practice.                                                                                         newly developed
                                                                                                                                                                          CHIT/Audit Finding
                                                                                                                                                                          Tracking Log to follow-up
                                                                                                                                                                          with WBS Managers and
                                                                                                                                                                          responsible engineers.

 TRC - Chill Plate and Clamp   1/27/2005    1   Consider changing clamp design to        Concur                  Alternate clamp designs that           Williamson, Dave Clamp assembly has been         COMPLETE
         Modification                           permit subassembly of clamp to                                   facilitate handling fewer parts will                    redesigned. See WBS1
[Willliamson/Nelson/Neilson]                    permit subassembly of clamp                                      be pursued. Fabrication drawings                        meeting presentation
                                                threaded fasteners (see Attachment                               for the TRC coils will be provided                      2/2/05.
 TRC - Chill Plate and Clamp   1/27/2005    2   Modify clamp seat assembly design        Same as Chit #1         Will be tracked unde Chit#1. No        Williamson, Dave CLOSED
         Modification                           so most parts can be assembled to                                separate action required.
[Willliamson/Nelson/Neilson]                    clamp before mounting on coil.
                                                [Zarnstorff]
 TRC - Chill Plate and Clamp   1/27/2005    3   Extend figures so they extend all the    Concur                  Modify design accordingly.             Williamson, Dave Included in cladding /          COMPLETE
         Modification                           way around the tube. [Nelson]                                                                                            chill plate redesign. See
[Willliamson/Nelson/Neilson]                                                                                                                                             WBS1 meeting
                                                                                                                                                                         presentation 2/2/05.




     Status Date: 12/23/2004                                                                                12
                                                                                  NCSX Engineering CHIT Tracking Log


        Design Review                                                                       Review Board
    [Cog Engr/RLM/Chair]        Rvw Date   #         Chit Finding [Originator]            Recommendation                 Project Disposition          Responsibility           Status              Due Date
 TRC - Chill Plate and Clamp   1/27/2005   4   Build TRC clamps in accordance with      Concur                  Fabrication drawings for the         Williamson, Dave Clamp assembly has been     COMPLETE
         Modification                          production coil clamp design. Need                               production coil clamps will be                        redesigned. See WBS1
[Willliamson/Nelson/Neilson]                   to provide fabrication drawings.                                 provided for fabricating the TRC                      meeting presentation
                                               [Reiersen]                                                       clamps.                                               2/2/05.




 TRC - Chill Plate and Clamp   1/27/2005   5   Change chill plate thickness from      Concur                    Fabrication drawings will show       Williamson, Dave Chill plates drawings are   COMPLETE
         Modification                          .060" to 040" all around. Repeat                                 .040" chill plate thickness.                          needed ASAP. Thermal
[Willliamson/Nelson/Neilson]                   reference thermal calculation with                               Reference thermal analyses will                       analyses will be updated
                                               revised cladding insulation overlap,                             be updated appropriately and                          for the comprehensive
                                               and crimp joint resistance. [Reiersen]                           documented in an analysis report                      Type C FDR. STATUS:
                                                                                                                for the comprehensive type C FDR                      Chill plates have been
                                                                                                                                                                      redesigned. See WBS1
                                                                                                                                                                      meeting presentation
                                                                                                                                                                      2/2/05.
 TRC - Chill Plate and Clamp   1/27/2005   6   Consider using other materials than      Concur                  The clamps for the TRC will be       Williamson, Dave Clamp assembly has been     COMPLETE
         Modification                          stainless for the clamp bars to reduce                           fabricated using stainless steel.                     redesigned. Material
[Willliamson/Nelson/Neilson]                   fabrication costs, e.g. aluminum                                 Alternative materials will be                         selection not changed.
                                               bronze. Ask the vendor for input on                              investigated with potential                           See WBS1 meeting
                                               potential cost savings via choice of                             vendors prior to the                                  presentation 2/2/05.
                                               materials. [M. Zarnstorff]                                       comprehensive type C FDR to see
                                                                                                                if significantly lower cost
                                                                                                                alternatives exist.
 TRC - Chill Plate and Clamp   1/27/2005   7   2" offset in lead block may not work     Concur                  Interference checks during FPA       Williamson, Dave Leads and terminal          COMPLETE
         Modification                          for production coils, especially Coil                            and in the installed position will                    connections have been
[Willliamson/Nelson/Neilson]                   Type A . The concern is interference                             be provided for the                                   redesigned to eliminate
                                               with the TF coils during field period                            comprehensive type C FDR                              extension. See WBS1
                                               assembly. [B. Nelson]                                                                                                  meeting presentation on
                                                                                                                                                                      5/11/05.
 TRC - Chill Plate and Clamp   1/27/2005   8   Need to document the detailed            Concur                  Structural analysis of the clamps    Williamson, Dave Uopdate of nonlinear        By 6/29/05
         Modification                          structural analysis of the clamps.                               will be provided for the                              analysis is in progress.
[Willliamson/Nelson/Neilson]                   Bending and shear and tensile loads                              comprehensive type C FDR.
                                               on the bolt are a concern. Assembly
                                               procedure must ensure that Belleville
                                               washers do not bottom out.
                                               Maximum unbalanced loads need to
                                               be estimated. [Reiersen]




    Status Date: 12/23/2004                                                                                13
                                                                                    NCSX Engineering CHIT Tracking Log


         Design Review                                                                        Review Board
     [Cog Engr/RLM/Chair]        Rvw Date   #        Chit Finding [Originator]              Recommendation                      Project Disposition             Responsibility          Status             Due Date
  TRC - Chill Plate and Clamp   1/27/2005   9  Chrzanowski needs to specify the           Concur                       Chrzanowski to provide a sketch         Chrzanowski, Jim Groundwrap application    COMPLETE
          Modification                         overlap min/max overlap for the                                         showing the "as built" overlap on                        was documented in log
 [Willliamson/Nelson/Neilson]                  reference design and show how the                                       the TRC and the min/max overlap                          book. CLOSED
                                               TRC is being built (2 sketches).                                        for the production coils.
                                               [Reiersen]
  TRC - Chill Plate and Clamp   1/27/2005   10 Impact of lead extension on field          Concur                       Impact of extending leads an              Brooks, Art    Leads and terminal        COMPLETE
          Modification                         errors need to be look at for the                                       additional 2" on field errors will be                    connections have been
 [Willliamson/Nelson/Neilson]                  production coils. [Reiersen]                                            assessed and addressed at the                            redesigned to eliminate
                                                                                                                       comprehensive Type C FDR.                                extension. See WBS1
                                                                                                                                                                                meeting presentation on
                                                                                                                                                                                5/11.
  TRC - Chill Plate and Clamp   1/27/2005   11 Need a different material for the lug.     Concur                       Alternate materials (e.g. Glidcop       Williamson, Dave TRC components made       COMPLETE
          Modification                         The copper softens after brazing and                                    or Cu Cr Zr alloys) will be                              with existing copper
 [Willliamson/Nelson/Neilson]                  it is difficult to thread and torque a                                  investigated for the production                          alloy. MC components to
                                               bolt. [Reiersen]                                                        coils prior to the comprehensive                         be made with Glidcop.
                                                                                                                       Type C FDR.
  TRC - Chill Plate and Clamp   1/27/2005   12 Need to document thermal hydraulic         Concur                       Thermal hydraulic calculations will Williamson, Dave Calculations in progress.     By 6/29/05
          Modification                         calculations for the comprehnsive                                       be documented in analysis reports
 [Willliamson/Nelson/Neilson]                  Type C FDR. [Reiersen]                                                  for the comprehensive type C FDR.

TF Coil System PDR              2/7/2005    10 Check interference between TF Coils        Concur                       Mike Cole to check.                        Cole, Mike                              5/2/2005
    Kalish/Nelson/Reiersen                     and MC leads. [Cole]




TF Coil System PDR              2/7/2005    11 Verify RT Clearance between TF             Concur [Same as chit         see #10                                    Cole, Mike                              5/2/2005
    Kalish/Nelson/Reiersen                     structure and modular coil leads,          #10]
                                               terminal, coax. Revise leads design
                                               to accommodate (Williamson)
TF Coil System PDR              2/7/2005    32 In order to satisfy lot a flexibility      Concur (Resolve issue        We will expand the global analysis       Hutch Neilson                             5/2/2005
    Kalish/Nelson/Reiersen                     requirement, need to analyze ability       of "requirement" versus      of the TF Coil to include 1.7T coil
                                               of TF to achieve +/- .5 Tesla in           "assess capability")         currents with +/- .5T to give us
                                               context of other coils being excited..                                  some indication of the influence of
                                               To credible levels (e.g. the list high B                                out of plane loads on the TF
                                               scenario) specifically will these coils                                 at higher TF currents.
                                               be able to satisfy GRD 3.2.1.5.3.4.2.?
                                               [Zarnstorff]

TF Coil System PDR              2/7/2005    1   Are we sure that the leads at the         (Need to finalize TF Coil    Yes. The clearances have been             Kalish, Mike                             5/2/2005
    Kalish/Nelson/Reiersen                      midplane miss the NBI transition          lead configuration and       checked in the pro engineer model
                                                ducts and allow space for routing the     bus connection and re-
                                                coaxial bus? [Nelson]                     check clearances at
                                                                                          each coil.)




      Status Date: 12/23/2004                                                                                     14
                                                                                NCSX Engineering CHIT Tracking Log


         Design Review                                                                Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #         Chit Finding [Originator]         Recommendation                        Project Disposition         Responsibility   Status    Due Date
TF Coil System PDR           2/7/2005   2   Could the top and bottom supports be Concur (Should be              The top and bottom supports can        Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                  made the same way, so the "fixed"     considered.)                  be interchanged with a spring
                                            support could be made either at the                                 support at the top then on the
                                            top or bottom to preserve stellarator                               bottom alternating positions as
                                            symmetry. This would also allow                                     you move poloidally around the
                                            easier adjustment of the vertical                                   machine. The fixed support
                                            location during assembly, since                                     design can probably be modified
                                            replacing shims looks more difficult                                to rely on jack screws for
                                            than turning adjustment screws.                                     adjustment instead of shims (at
                                            [Nelson]                                                            an additional cost). It is possible
                                                                                                                that eliminating the spring
                                                                                                                support at the top and making
                                                                                                                that a fixed support will reduce
                                                                                                                stresses and deflections. These
                                                                                                                issues will be addressed in the
                                                                                                                Structures design process. If
                                                                                                                implemented these design
                                                                                                                changes do not effect the design
                                                                                                                of the TF Coil.
TF Coil System PDR           2/7/2005   3   Put scribe marks/targets on the coil      Concur                    Target locations will be              Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                  that are visible during assembly to                                 incorporated into the final
                                            aid in adjustment of the coil position.                             drawings. These targets will be
                                            These could be on the inboard side at                               mapped with respect to the
                                            the midplane, the outboard side at                                  current center of the coil.
                                            the midplane, and at the top and
                                            bottom either outboard or inboard of
                                            the support. The inboard marks
                                            should be visible from the bore of the
                                            machine when the solenoid is not yet
                                            in position. [Nelson]

TF Coil System PDR           2/7/2005   4   Investigate whether the lead block        Concur                    Lead block geometry has been          Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                  geometry could be slightly modified                                 modified so that the kickless cable
                                            to close up the field error loop and                                fits in a gap between the two
                                            reduce the lateral footprint of the                                 terminals reducing the lateral
                                            lead/coax connection. [Nelson]                                      footprint and field errors
TF Coil System PDR           2/7/2005   5   Look at the assembly with the TF          Concur                    A study of clearances taking into     Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                  Coils retracted to make sure there is                               account tolerances will be
                                            still clearance everywhere. [Nelson]                                presented at the FDR

TF Coil System PDR           2/7/2005   6   Thermal cycling may cause             Concur (Consider as           A design iteration has added a        Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                  undesirable slipping at the wedged    alternatives to pins.)        turnbuckle like connection at the
                                            surfaces, which are presently located                               top and the bottom of the nose of
                                            only by a friction joint. Consider                                  the TF Coil. This eliminates issues
                                            adding simple G11 rings at the top                                  of slippage and addresses the
                                            and bottom that would be physically                                 potential "slip stick" problem. The
                                            bolted to the coil wedge castings.                                  connection will be bottomed out
                                            This would ensure proper alignment                                  so that no movement is possible.
                                            at assembly and would tend to return                                Bellville washers which exceed
                                            the assembly to the desired position                                required inward loads by a factor
                                            during thermal cycling. The pin                                     of 2 will insure that the load does
                                            joints may do the same thing, but the                               not diminish after thermal cycling.
                                            rings seem simpler. [Nelson]




      Status Date: 12/23/2004                                                                              15
                                                                                 NCSX Engineering CHIT Tracking Log


         Design Review                                                                     Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #         Chit Finding [Originator]              Recommendation                      Project Disposition          Responsibility              Status    Due Date
TF Coil System PDR           2/7/2005   7   Keep braze joints in the conductor         Concur                      The Coil Specification will provide     Kalish, Mike                        5/2/2005
    Kalish/Nelson/Reiersen                  out of the higher stress areas.                                        detailed guidance as to the
                                            [Nelson]                                                               allowable locations for the braze
                                                                                                                   joints
TF Coil System PDR           2/7/2005   8   Document the "honeycomb" issue,            Concur                      A new FEA analysis was                 Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                  where cool-down of the copper turns                                    performed to determine if this
                                            tries to shear the turn to turn                                        phenomena results in
                                            insulation within the thick ground                                     unacceptable stresses or
                                            wall tube. This is an artifact of the                                  deflections. The results show that
                                            apparent difference between the                                        it is not a problem if the lead area
                                            small glass epoxy shrinkage and                                        is properly restrained
                                            larger copper shrinkage. It is not
                                            known whether this is a real problem
                                            or not. [Nelson]

TF Coil System PDR           2/7/2005   9  Put the magnetic sensor loops on at         Concur                      Will be added to final drawing         Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                 PPPL, not at Vendor. [Nelson]
TF Coil System PDR           2/7/2005   13 On slide 45, does our project design        Concur. Analysis results    Justification for the use of Trescas   Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                 criteria use the just principal stress or   should address design       tresses added to Calculation
                                           the Tresca (2x max shear) stress            criteria.                   Memo. Memo to be checked
                                           intensity? The just principal stress is                                 before the FDR
                                           only for pure tension. The same
                                           comment applies to slides 46 and 57.
TF Coil System PDR           2/7/2005       *Note: 44, using Tresca stress
                                        14 On slide that the bonded assumption         Concur                      An examination of the analysis         Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                 at the lower coil interface may affect                                  does not bear this out as a
                                           the global stiffness of the model and                                   significant effect. The calculation
                                           the results at the upper interface.                                     check will verify this is the case.
                                           [Dahlgren]

TF Coil System PDR           2/7/2005   15 On slide 42, Coefficient of Friction        Concur. Needs to be         A design iteration has added a         Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                 needs to be measured and the                checked at temperature      turnbuckle like connection at the
                                           assumption verified on actual casting       and with appropriate        top and the bottom of the nose of
                                           surface. [Dahlgren]                         surface finish.             the TF Coil. This eliminates issues
                                                                                                                   of slippage and addresses the
                                                                                                                   potential "slip stick" problem. The
                                                                                                                   connection will be bottomed out
                                                                                                                   so that no movement is possible.
                                                                                                                   Bellville washers which exceed
                                                                                                                   required inward loads by a factor
                                                                                                                   of 2 will insure that the load does
                                                                                                                   not diminish after thermal cycling.
                                                                                                                    The new design eliminates the
                                                                                                                   friction issue

TF Coil System PDR           2/7/2005   16 On slide, 41, wedge castings in the    Disagree (At the very            No action                              Kalish, Mike     Complete            5/2/2005
    Kalish/Nelson/Reiersen                 model does not appear to have a fully end of the casting
                                           tapered wedging surface. [Dahlgren] where the view is taken,
                                                                                  there is not a fully
                                                                                  tapered wedging
                                                                                  surface)
TF Coil System PDR           2/7/2005   17 Failure modes are to be identified and Concur                           FMEA will be generated for the         Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                 addressed. [Ramakrishnan]                                               FDR
TF Coil System PDR           2/7/2005   18 Material properties need to be         Concur                           Calculation check will include         Kalish, Mike                         5/2/2005
    Kalish/Nelson/Reiersen                 checked as part of analysis checking.                                   check of material properties
                                           [Reiersen]




      Status Date: 12/23/2004                                                                                 16
                                                                               NCSX Engineering CHIT Tracking Log


         Design Review                                                                   Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #        Chit Finding [Originator]             Recommendation                        Project Disposition          Responsibility   Status    Due Date
TF Coil System PDR           2/7/2005   19 What happen with selecting u 2            Concur (See chit #15)         A design iteration has added a          Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 coeficient of friction when operating                                   turnbuckle like connection at the
                                           at cryo temperature. [Brown]                                            top and the bottom of the nose of
                                                                                                                   the TF Coil. This eliminates issues
                                                                                                                   of slippage and addresses the
                                                                                                                   potential "slip stick" problem. The
                                                                                                                   connection will be bottomed out
                                                                                                                   so that no movement is possible.
                                                                                                                   Bellville washers which exceed
                                                                                                                   required inward loads by a factor
                                                                                                                   of 2 will insure that the load does
                                                                                                                   not diminish after thermal cycling.
                                                                                                                    The new design eliminates the
                                                                                                                   friction issue

TF Coil System PDR           2/7/2005   29 Need to confirm assumed Sm values         Concur                        Will be confirmed in calculation       Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 for cast 304SS [Heitzenroeder]                                          check

TF Coil System PDR           2/7/2005   22 Instrumentation and control issues                                      Will be addressed at FDR               Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 need to be addressed at FDR. It is a
                                           requirement that the TF System is
                                           responsible for generating. [Reiersen]

TF Coil System PDR           2/7/2005   23 Extrapolations of dielectric strength     Concur (Voltage               Testing of prototype sample will       Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 of sandwiched materials based on          withstand capacity at         be used to establish that large
                                           individual volts/mil in thin layers is    cryo temperature should       factors of safety exist with respect
                                           unrealistic. Suggest the R&D should       be established for actual     to the dielectric standoff of the
                                           be performed to determine intrinsic       insulation scheme.)           insulation scheme
                                           dielectric strength based on adequate
                                           sample group. Perhaps at cryo
                                           temperature unless research shows
                                           that RT tests results are applicable of
                                           80K or can be scaled. [Neumeyer]


TF Coil System PDR           2/7/2005   24 Thick 3/8" ground wall seems              Concur (Justify 3/8"          Past experience with ground wall       Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 excessive. Not necessary for voltage      groundwall thickness.)        construction was reviewed and
                                           stand-off or mechanical robustness.                                     PPPL experience does not indicate
                                           May be difficult to avoid                                               that a 3/8" ground wrap is
                                           delamination/stress cracks due to                                       problematic
                                           temperature gradiant and/or
                                           differential thermal expansion during
                                           cure and/or operations. [Neumeyer]

TF Coil System PDR           2/7/2005   26 Keep flux loop outside ground wrap.       Concur                        Final drawings will reflect this       Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 [Reiersen]                                                              configuration



TF Coil System PDR           2/7/2005   27 Consider purchasing an extra coil. If Concur                            Project has indicated that funding     Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 one of 18 proved to be a "weak                                          is insufficient for a spare coil but
                                           sister" or out of spec, the schedule                                    spare conductor will be ordered.
                                           impact could be significant. [Reiersen]                                 The new schedule allows enough
                                                                                                                   time to fabricate a 19th coil if
                                                                                                                   required later.




      Status Date: 12/23/2004                                                                                 17
                                                                              NCSX Engineering CHIT Tracking Log


         Design Review                                                                  Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #        Chit Finding [Originator]            Recommendation                  Project Disposition               Responsibility   Status    Due Date
TF Coil System PDR           2/7/2005   28 Has procurement schedule been            Concur                    No Action, Coils now fabricated in         Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 reviewed with PPPL Procurement                                     house
                                           division and is there agreement on
                                           lead times and process? [Neilson]
TF Coil System PDR           2/7/2005   30 Consider upper and lower                 Concur                    A similar scheme will be adopted          Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 epoxy/glass built-up "Blocks" or                                   with a combination of G10 and
                                           Stirrups" applied over the ground                                  Glass
                                           wrap on each coil side, both above
                                           and below each wedge half. Low $$$
TF Coil System PDR           2/7/2005   31 insurance if coil bond to wedge fails.
                                           Stagger the conductor braze - joints     Concur                    The final drawings will indicate          Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 so they are up-down symmetric -or-                                 braze regions which will be as
                                           make them the same on each coil                                    symmetrically placed as possible
                                           and be careful to mount the coils in a
                                           stellarator -symmetric pattern.
                                           [Zarnstorff]




TF Coil System PDR           2/7/2005   33 Shim coil mounting so TF Midplane is     Concur (Consider along    Drawings will be updated to               Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 aligned with machine midplane            with stellarator          reflect this shift in the coil location
                                           @80K. This is the best way to ensure     symmetric supports
                                           stellarator symmetry in the face of      (previous chit).
                                           the finite deformation, etc. (esp. at    Marking the coils may
                                           higher TF with combined fields)          be critical.)
                                           [Zarnstorff]




TF Coil System PDR           2/7/2005   34 Make the vertical support structures     Concur ( Same as          The top and bottom supports can           Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 symmetric (top and bottom).              previous chit)            be interchanged with a spring
                                           [Zarnstorff]                                                       support at the top then on the
                                                                                                              bottom alternating positions as
                                                                                                              you move polloidally around the
                                                                                                              machine. The fixed support
                                                                                                              design can probably be modified
                                                                                                              to rely on jack screws for
                                                                                                              adjustment instead of shims (at
                                                                                                              an additional cost). It is possible
                                                                                                              that eliminating the spring
                                                                                                              support at the top and making
                                                                                                              that a fixed support will reduce
                                                                                                              stresses and deflections. These
                                                                                                              issues will be addressed in the
                                                                                                              Structures design process. If
                                                                                                              implemented these design
                                                                                                              changes do not effect the design
                                                                                                              of the TF Coil.
TF Coil System PDR           2/7/2005   35 Provide drawings of nose casting and     Concur                    The assembly process has been             Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 coil to Tech Shop to determine 1)                                  changed to eliminate final
                                           ability to machine 2) estimate of                                  machining of the TF Castings.
                                           tolerance limit 3) estimate of cast.                               Castings will be fabricated to the
                                           [Dudek]                                                            required dimension and molded
                                                                                                              into place using a precise
                                                                                                              assembly fixture




      Status Date: 12/23/2004                                                                            18
                                                                              NCSX Engineering CHIT Tracking Log


         Design Review                                                                 Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #        Chit Finding [Originator]           Recommendation                     Project Disposition           Responsibility   Status    Due Date
TF Coil System PDR           2/7/2005   36 Evaluation criteria for prospective    Concur                       N/A TF Coils are now being              Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 vendors need to include past                                        fabricated in house.
                                           performance and the implementation
                                           of their QA program (not the QA
                                           manual). [Reiersen]
TF Coil System PDR           2/7/2005   37 Deformation (DMX = approx. 0.013)      Other ( Consider as part     Analysis of shell structure to         Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 is more than 10 times of shell         of structures design)        provide integrated analysis with
                                           structure. It is possible that most of                              coils. Coil deformations
                                           the TF loads may go to shell structure                              accommodated by allowing radial
                                           through bolt joints. The load path                                  movement and the use of flexible
                                           shall be evaluated. [H.M. Fan]                                      vertical supports. Some load is
                                                                                                               reacted through Bellville spring
                                                                                                               connections but relative
                                                                                                               deflections are allowed by design
TF Coil System PDR           2/7/2005   38 Need to determine if thermal stresses Concur (See previous          A new FEA analysis was                 Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 from Cu shrinking in honeycomb is a chit)                           performed to determine if this
                                           problem. (May answer 2D                                             phenomena results in
                                           axisymmetric model.) [Brooks]                                       unacceptable stresses or
                                                                                                               deflections. The results show that
                                                                                                               it is not a problem if the lead area
                                                                                                               is properly restrained




TF Coil System PDR           2/7/2005   39 Need to assess impact of upper           Concur                                                            Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 vertical spring support on TF stresses
                                           T deflections. [Brooks]




TF Coil System PDR           2/7/2005   40 Need same analysis of lead/transition    Concur                     A new detailed analysis of lead        Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 regime stress. [Brooks]                                             transition area is being performed.

TF Coil System PDR           2/7/2005   41 Optimize design of lead tabs with        Concur                     Lead block geometry has been           Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 consideration of the coax lead stem                                 modified so that the kickless cable
                                           to which they will attach. Consider                                 fits in a gap between the two
                                           the following: 1) minimize space 2)                                 terminals reducing the lateral
                                           minimize stray field 3) minimize Jx8                                footprint and field errors
                                           forces 3) optimize current flow
TF Coil System PDR           2/7/2005   42 Stresses in leads and transition         Concur                     A new detailed analysis of lead        Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 region need to be addressed.                                        transition area is being performed.
                                           [Reiersen]



TF Coil System PDR           2/7/2005   43 Product spec needs to identify stay      Concur (see chit #7        The Coil Specification will provide    Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 out zones and "no overlap"                                          detailed guidance as to the
                                           requirements for braze joints.                                      allowable locations for the braze
                                           [Reiersen]                                                          joints
TF Coil System PDR           2/7/2005   44 The analysis is inconsistent with the    Concur                     The analysis has been updated          Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 design. The design says the wedges                                  and re-run to provide results for
                                           and winding are bonded. The                                         both the bonded and unbonded
                                           analysis assumed they slip. Ditto for                               wedge casting cases. The



      Status Date: 12/23/2004                                                                             19
                                                                              NCSX Engineering CHIT Tracking Log


         Design Review                                                                 Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #         Chit Finding [Originator]          Recommendation                    Project Disposition           Responsibility   Status    Due Date
TF Coil System PDR           2/7/2005   46 Design criteria should be established   Concur                     Design criteria are provided in the     Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 for friction joints. [Reiersen]                                    NCSX structural and cryogenic
                                                                                                              design criteria and will be applied
                                                                                                              in the analyses.

TF Coil System PDR           2/7/2005   47 Analyses do not show interaction with Concur                       Analysis of shell structure to         Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 structures. The interface loads need                               provide integrated analysis with
                                           to be addressed in the design of the                               coils. Coil deformations
                                           TF coils and structures. [Reiersen]                                accommodated by allowing radial
TF Coil System PDR           2/7/2005   48 Need to define mechanism for cooling Concur                        Time frame is such that bringing       Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 the coils down from RT. [Reiersen]                                 the coils down gradually from
                                                                                                              room temperature should not
                                                                                                              require any special features or
                                                                                                              changes to the TF design. An
                                                                                                              outline of this procedure will be
TF Coil System PDR           2/7/2005   49 Need to define minimum clearance        Concur                     Tolerance studies for the wedging      Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 requirements (after taking into                                    / locating of the TF coils have
                                           account tolerances on all                                          been undertaken. Adjustability of
                                           components) and adjust TF and MC                                   mounting points will determine
                                           designs to achieve this. [Reiersen]                                tolerance requirements for the
                                                                                                              structures WBS15

TF Coil System PDR           2/7/2005   50 The upper bracket, barrel strap and     Concur                     The upper bracket to be added to       Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 other components were stated not be                                the scope and cost for work
                                           part of the TF coil. Are they all                                  package WBS15. With the
                                           included in the scope and estimate of                              addition of the puller stud to the
                                           some other work package? [Neilson]                                 front of the wedge the "barrel
                                                                                                              strap" is no longer required.
TF Coil System PDR           2/7/2005   51 The TF Coil and structures form a       Concur                     Assembly sequence and                  Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 assembly with many DOF for                                         adjustments to be worked out
                                           adjustment. Need to define the                                     with Tom Brown and Steve
                                           sequence in how pieces are put                                     Raftopoulos
                                           together and how adjustments made.
                                           [Reiersen]
TF Coil System PDR           2/7/2005   52 Consider substituting G11 for G10.      Concur                     G11 will be used. Not required on      Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 Previous experience with G10                                       this project for reasons stated
                                           indicates that the bromine in this                                 (neutron activation not an issue)
                                           material becomes activated by D-D                                  but per chit on twisted racetrack
                                           neutrons and creates radioactive                                   design review G11 was adopted
                                           "hot spots". [Levine]                                              because it has "more consistent
                                                                                                              material properties"
TF Coil System PDR           2/7/2005   53 Orientation of the leads from the TF    Concur                     Lead block geometry has been           Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 bundle needs to be analyzed and                                    modified so that the kickless cable
                                           documented. [Ramakrishnan]                                         fits in a gap between the two
                                                                                                              terminals reducing the lateral
                                                                                                              footprint and field errors. A new
                                                                                                              detailed analysis of lead transition
                                                                                                              area is being performed.

TF Coil System PDR           2/7/2005   56 Minimize use of shims stock in pulsed Concur (Consider non-        Where shims are necessary they         Kalish, Mike              5/2/2005
    Kalish/Nelson/Reiersen                 operation shims move. [Viola]         shim options)                will be locked in place so that
                                                                                                              movement is not possible




      Status Date: 12/23/2004                                                                            20
                                                                                 NCSX Engineering CHIT Tracking Log


         Design Review                                                                    Review Board
     [Cog Engr/RLM/Chair]    Rvw Date   #        Chit Finding [Originator]              Recommendation                   Project Disposition           Responsibility   Status    Due Date
TF Coil System PDR           2/7/2005   57 Need to develop the TF-to -Lead            Concur                   Lead block geometry has been             Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 (kickless cable) connection concept.                                modified so that the kickless cable
                                           (Bolted electrical joint, field errors,                             fits in a gap between the two
                                           and space issues). [Reiersen]                                       terminals reducing the lateral
                                                                                                               footprint and field errors. A new
                                                                                                               detailed analysis of lead transition
                                                                                                               area is being performed.




TF Coil System PDR           2/7/2005   58 Consider thickening the ground-wrap        Concur                   Thicker Ground Wrap in the nose          Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 thickness in the nose region to                                     section does not reduce stress.
                                           increase stress margin between                                      Stresses are already low inside
                                           wedge castings. Decrease conductor                                  the wedge casting case. The coil
                                           size slightly if necessary. [Zarnstorff]                            profile has been optimized to
                                                                                                               maximize copper cross section in
                                                                                                               the nose region. Thinning the
TF Coil System PDR           2/7/2005   45 The design shows that the TF Coil          Concur                   An influence matrix will have to         Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 current is to be limited based on                                   be generated to provide inputs to
                                           other coil currents. This dictates the                              the coil protection calculator.
                                           use of a coil protection calculator, if                             The TF coil has been designed to
                                           the machine is to be properly                                       meet the specified requirements.
TF Coil System PDR           2/7/2005   55 A. What are the limits of the              Concur                   I^2T limits can be set at 645            Kalish, Mike             5/2/2005
    Kalish/Nelson/Reiersen                 following? What should be the                                       KA^2 secs which is a factor of 1.5
                                           protection                                                          above the .5Tesla dissipated
                                                                1) over current                                power and still only results in an
                                                                                                               approximate temperature rise of
                                                                                                               less than 6C. If it is assumed all
                                                     2) I^2T                                                   of the modular coil power is
                                                                                                               dumped into the TF coil the dT
                                                                               B.                              may get as high as 14C . Over
                                           Are there any stress limits that have                               current protection limits will be
TF Coil System PDR           2/7/2005   21 to be detected or corrected?
                                           Provide calculations values of         Concur                       more complicated to calculate          Reiersen, Wayne            5/2/2005
    Kalish/Nelson/Reiersen                 resistance and inductance of the coil
                                           and establish the voltage to be
                                           impressed on the TF coil connection.
                                           [Ramakrishnan]




TF Coil System PDR           2/7/2005   25 Basis for current and voltage ratings   Concur (Needs formal                                               Reiersen, Wayne            5/2/2005
    Kalish/Nelson/Reiersen                 not presented. Not clear whether        documentation and
                                           scenarios/coils/power supply are        checking.)
                                           coordinated. Inductance and
                                           resistance calculations not presented.
                                            Conductor heating calculation not
                                           presented. Is there a chance for
                                           higher than normal voltage on TF due
                                           to induction from modular, e.g. , If TF
                                           is open circuited during test shot on
                                           modular-only? [Neumeyer]




      Status Date: 12/23/2004                                                                             21
                                                                                    NCSX Engineering CHIT Tracking Log


         Design Review                                                                  Review Board
     [Cog Engr/RLM/Chair]       Rvw Date    #        Chit Finding [Originator]        Recommendation                      Project Disposition            Responsibility            Status             Due Date
TF Coil System PDR              2/7/2005    54 Document the criteria used for       Concur                                                             Reiserson, Wayne                              5/2/2005
    Kalish/Nelson/Reiersen                     selecting the number of turns and
                                               coils current [Ramakrishnan]
TF Coil System PDR              2/7/2005    12 Verify RT clearance between TF       Concur                       Williamson to modify MC winding    Williamson, Dave                                 5/2/2005
    Kalish/Nelson/Reiersen                     structure and modular coil winding                                forms appropriately. Interference
                                               forms. Implement change to type-B                                 checks to be re-run with stocked
                                               MCWF. [Williamson]                                                models.
TF Coil System PDR              2/7/2005    20 Re-check TF/MC interface with        Concur (See chit #12)        Williamson to modify MC winding    Williamson, Dave                                 5/2/2005
    Kalish/Nelson/Reiersen                     respect to MC stocked model. [Brown]                              forms appropriately. Interference
                                                                                                                 checks to be re-run with stocked
                                                                                                                 models.
Modular Coil Assembly Fixture   2/16/2005   1   Consider providing table of              Concur                  The three point data has been      Brown, Tom                                         Done
    Brown/Nelson/Dudek                          coordinates for 3 seats at flange ends                           generated. It needs to be put in a
                                                at each trajectory step. [Nelson]                                table format and included as data
                                                                                                                 provided within the Spec
Modular Coil Assembly Fixture   2/16/2005   2   Include a requirement in spec that    Concur                                                                              This has been added to       Done
    Brown/Nelson/Dudek                          assembly cannot tip over during                                                                                           Spec
                                                operation, including seismic
                                                accelerator of .11g -Also apply to
                                                gantry. [Nelson]
Modular Coil Assembly Fixture   2/16/2005   3   Assemble tolerance information into   Concur                     Analysis will be documented in a memo
                                                                                                                                                    Brown, Tom            This needs to be done      8/1/2005
    Brown/Nelson/Dudek                          one place to verify uses and approach                                                                                     before the FDR as a
                                                of modular coil to vacuum vessel and                                                                                      formal document. Data
                                                confirm tolerance req. for fixture.                                                                                       has been documented in
                                                [Nelson]                                                                                                                  earlier ppt slides.
Modular Coil Assembly Fixture   2/16/2005   4   Need to articulate a concept for a    Concur                                                           Brown / Viola      This is on hold pending      open
    Brown/Nelson/Dudek                          control system. [Reiersen]                                                                                                reduced cost crane
                                                                                                                                                                          assembly option.
Modular Coil Assembly Fixture   2/16/2005   5   Look at left and right sides for         Concur                  Same as 9
    Brown/Nelson/Dudek                          required fixture motion. [Nelson]


Modular Coil Assembly Fixture   2/16/2005   6   Ask vendor to perform and test (prior    Concur                  Verification in achieving this                                                        Done
    Brown/Nelson/Dudek                          to delivery) to prove that the system                            control is in the QA conformance
                                                can go to a pre-determined location                              inspection /verification section of
                                                and back and forth with the required                             the Spec.
                                                accuracy and precision. [Raftopoulos]



Modular Coil Assembly Fixture   2/16/2005   7   Consider making the spherical seats      Concur                  Spherical seats can be adjusted                                                       Done
    Brown/Nelson/Dudek                          adjustable in place so that you don’t                            without taking the coil apart but
                                                have to take coils apart to make                                 the intent is to make seat
                                                adjustments. [Raftopoulos]                                       adjustments during the MCHP
                                                                                                                 assembly, prior to MCFP assembly.

Modular Coil Assembly Fixture   2/16/2005   8   Need to specify that minimum motion Concur                       Variable speed motors are being                                                       Done
    Brown/Nelson/Dudek                          per 'bump' (or infinitely variable                               specified in the Spec.
                                                speed on motors) [Dudek]
Modular Coil Assembly Fixture   2/16/2005   9   Verify range of motion specified for      Concur                                                                          This has been completed.     Done
    Brown/Nelson/Dudek                          each D.O.F includes assembly of both
                                                half period (i.e. from left to right) for
                                                example, fixture must move up to
                                                assembly one half, but down to




      Status Date: 12/23/2004                                                                               22
                                                                                    NCSX Engineering CHIT Tracking Log


        Design Review                                                                       Review Board
    [Cog Engr/RLM/Chair]         Rvw Date   #       Chit Finding [Originator]             Recommendation                 Project Disposition          Responsibility             Status             Due Date
Modular Coil Assembly Fixture   2/16/2005   10 Need to specify fails safe brakes on     Concur                                                                         This has been specified in    Done
    Brown/Nelson/Dudek                         all motions. (i.e., loss of power will                                                                                  the Spec.
                                               lock mechanism) [Dudek]




Modular Coil Assembly Fixture   2/16/2005   11 Clearance analysis needs to include   Concur                     This will be folded into item 3
    Brown/Nelson/Dudek                         tolerances and components installed
                                               on vacuum vessel surface (insulation,
                                               mag. Diagnostics etc.) [Neilson]

Modular Coil Assembly Fixture   2/16/2005   12 Investigate schedule impact of fitting   Concur                  This has been done. Data has                                                         Done
    Brown/Nelson/Dudek                         A-A and C-C coils before assembly of                             been sent to Ron and he is folding
                                               half periods and field periods.                                  it into the project schedule.
                                               [Reiersen]
Modular Coil Assembly Fixture   2/16/2005   13 Consider adding vacuum vessel stand      Concur                  Okay - this can be done.                                                             Done
    Brown/Nelson/Dudek                         as part of the MCAF procurement.
                                               [Reiersen]


Modular Coil Assembly Fixture   2/16/2005   14 With 6 DOF, show by error analysis       Concur                  Verification in achieving this                         This is on hold pending       open
    Brown/Nelson/Dudek                         that the 0.20" control is achievable.                            control is in the QA conformance                       reduced cost crane
                                               The vendor needs to demonstrate                                  inspection /verification section of                    assembly option.
                                               this as part of the acceptance test.                             the Spec. An error analysis will be
                                               [Reiersen]                                                       done to verify motion feasability.

Modular Coil Assembly Fixture   2/16/2005   15 Show lifting points for 0/H crane. All   Concur                  This is being developed in order to Morris, Lew        This is on hold pending       open
    Brown/Nelson/Dudek                         there features on the MCWF to                                    properly specify the needed                            reduced cost crane
                                               accommodate this lift? [Reiersen]                                manned access space required                           assembly option.
                                                                                                                around the gantry crane.
Modular Coil Assembly Fixture   2/16/2005   16 Perform seismic analysis to see if the   Concur                  A preliminary analysis will be     Brown               This is on hold pending       open
    Brown/Nelson/Dudek                         present design is ok. Investigate                                performed to qualify the reference                     reduced cost crane
                                               sudden accelerations and                                         design feasibility. Seismic and                        assembly option.
                                               decelerations as well. [Reiersen]                                safety performance requirements
                                                                                                                are in the Spec.
Modular Coil Assembly Fixture   2/16/2005   17 Generate a 3-pt table so the vendors     Concur                  Same as Item 1
    Brown/Nelson/Dudek                         can design their own mechanisms.
                                               [Reiersen]
Modular Coil Assembly Fixture   2/16/2005   18 Consider building vacuum vessel          Concur                  Not sure what this means?
    Brown/Nelson/Dudek                         stand with the same contrast as the
                                               manipulator. [Dudek]
Modular Coil Assembly Fixture   2/16/2005   19 Ensure that you have a safe margin       Concur                  Will add sufficient margin for                                                       Done
    Brown/Nelson/Dudek                         for movement of fixture in all                                   component movement to the
                                               direction/rotations. etc. Don't limit                            specification document.
                                               fixture to minimum motions.
                                               [Chrzanowski]
Gettelfinger/Nelson/Reiersen    4/22/2005   1 Look at loads in fasteners. [Dudek]       Concur                  3/30/06 Effort on hold; waiting
          Cryostat System                                                                                       for design inputs from WBS 15, 16




      Status Date: 12/23/2004                                                                              23
                                                                                  NCSX Engineering CHIT Tracking Log


          Design Review                                                                     Review Board
      [Cog Engr/RLM/Chair]      Rvw Date   #          Chit Finding [Originator]           Recommendation                     Project Disposition        Responsibility   Status   Due Date
Gettelfinger/Nelson/Reiersen   4/22/2005   2   Detailed plan for completing final       Concur                      3/30/06 Effort on hold; waiting
          Cryostat System                      design should be developed ASAP.                                     for design inputs from WBS 15, 16
                                               Development activities and interfaces
                                               are particular concerns to be resolved
                                               soon. [Reiersen]
Gettelfinger/Nelson/Reiersen   4/22/2005   3   Person should be able to stand (or       Concur                      3/30/06 Incumbent design
          Cryostat System                      fall) onto the top of the cryostat                                   supports recommendation
                                               without falling through. [Reiersen]
Gettelfinger/Nelson/Reiersen   4/22/2005   4   Resolve interfaces with port             Concur                       3/30/06 WBS 12 interface
          Cryostat System                      penetration, especially                                              understood, WBS 16 details
                                               heating/cooling tubes and heater                                     unavailable
                                               wires. [Reiersen]
Gettelfinger/Nelson/Reiersen   4/22/2005   5   Procurement plan should be reflected     Concur                      3/30/06 Will follow
          Cryostat System                      in our baseline schedule and plans.                                  recommendation
                                               [Reiersen]
Gettelfinger/Nelson/Reiersen   4/22/2005   6   Concerned about growth in cryostat       Concur                      3/30/2006 Reworked midpalane
          Cryostat System                      radius (or build) resulting in longer                                avoids this concern
                                               effective ports constructions on
                                               diagnostic field of view. [Zarnstorff]

Gettelfinger/Nelson/Reiersen   4/22/2005   7   Do we really need a vapor barrier in     Disagree, Provides          3/30/2006 Reworked midpalane
          Cryostat System                      the inside as well as the outside.       redundant seal and          has hermetic ambient boundary
                                               [Brown]                                  reduced vulnerability to    and semihermetic inboard
                                                                                        condensation on the         boundary
                                                                                        outside
Gettelfinger/Nelson/Reiersen   4/22/2005   8  It appears that viewing access ports      Other                       3/30/06 Effort on hold; waiting
          Cryostat System                     are needed on the cryostat                                            for design inputs from WBS 16
                                              top/bottom/side to gain quick access.
                                              [Brown]
Gettelfinger/Nelson/Reiersen   4/22/2005   9 The adjacentpanel joint seal design        Other Will be checked 3/30/2006 Test bed in fabrication
          Cryostat System                     appears to me to offer a high             in development program
                                              potential for leakage. [Brown]
Gettelfinger/Nelson/Reiersen   4/22/2005   10 This is a lot of work which does not      Concur Consider ways        3/30/06 This approach is not
          Cryostat System                     address the 90 plus ports which will      to more easily              practical
                                              cost as much to disassemble, modify       accommodate future
                                              and reassembly. Consider just a big       modifications.
                                              bag which will be come an ice ball but
                                              get through 1st plasma [Viola]

Gettelfinger/Nelson/Reiersen   4/22/2005   11 Panels will weigh 160 lbs. each.          Concur                      3/30/06 Lifting scheme will be
          Cryostat System                     Some handling concept/design is                                       provided
                                              needed. [Viola]
Gettelfinger/Nelson/Reiersen   4/22/2005   12 The panel outer seal design looks         Concur                      3/30/2006 Test bed in fabrication
          Cryostat System                     expensive (view graph #15).
                                              Consider using a "Painted on" seal or
                                              a sheet type seal material held in
                                              with RTV sealant. 30 holes and 50
                                              panels. [Dudek]
Gettelfinger/Nelson/Reiersen   4/22/2005   13 Need to define material props for         Concur                      3/30/06 Material properties for
          Cryostat System                     analysis in chopped - fiber vs. G-10                                  candidate materials will be
                                              cr. [Dahlgren]                                                        provided
Gettelfinger/Nelson/Reiersen   4/22/2005   14 Provide 2 D section view of packed        Concur                      3/30/06 Effort on hold; waiting
          Cryostat System                     conical penetration. [Cole]                                           for design inputs from WBS 15
Gettelfinger/Nelson/Reiersen   4/22/2005   15 Verify resilience of Solimide foam at     Concur                      3/30/2006 Test bed in fabrication
          Cryostat System                     cryogenic temperature. [Goranson]




      Status Date: 12/23/2004                                                                                  24
                                                                                    NCSX Engineering CHIT Tracking Log


          Design Review                                                                      Review Board
      [Cog Engr/RLM/Chair]       Rvw Date   #        Chit Finding [Originator]             Recommendation                    Project Disposition            Responsibility              Status             Due Date
Gettelfinger/Nelson/Reiersen    4/22/2005   16 1 psi seems like a lot of pressure        Concur                      3/30/06 1.5 inW will be adopted
          Cryostat System                      consider using 1.5 inch of water
                                               instead of 1 psi. [Goranson]
 Modular Coil Type C Cladding   4/27/2005   1 Investigate ways of cleaning up            Concur                      ProE layers and output options
            FDR                                drawing files. [Horner]                                               investigated, DXF format with        Williamson         Closed
  Williamson/Nelson/Reiersen                                                                                         spline option works best.
 Modular Coil Type C Cladding   4/27/2005   2   Consider process improvement for         Concur
            FDR                                 generating cladding/chill plate                                      ProE family table method studied
                                                                                                                                                          Williamson         Closed
  Williamson/Nelson/Reiersen                    drawings for type A and type B.                                      and found to be best approach.
                                                [Reiersen]
 Modular Coil Type C Cladding   4/27/2005   3   Expedite resolution of terminal block    Concur
            FDR                                 height issue. Determine how much
                                                                                                                     Terminal assembly has been
  Williamson/Nelson/Reiersen                    TF Structure can be relieved.                                                                             Williamson /
                                                                                                                     redesigned to eliminate                                 Closed
                                                Consider pre-bending prior to brazing                                                                     Fogarty
                                                                                                                     interference.
                                                replacing tow 90º bends with one
                                                gentle bend. [Reiersen]
 Modular Coil Type C Cladding   4/27/2005   4   Revised lead block design should be      Concur                      Analysis shows that field errors
            FDR                                 evaluated by Art Brooks for field                                    are acceptable. Ref A. Brooks,       Williamson         Closed
  Williamson/Nelson/Reiersen                    errors. [Reiersen]                                                   6/2/05
 Modular Coil Type C Cladding   4/27/2005   5   Need to articulate procurement plan      Concur                                                                              Open pending completion
                                                                                                                     Plan to fabricate first set of
            FDR                                 and incorporate into DMB for chill                                                                        Williamson /       of Type-C master bill of
                                                                                                                     cladding and chill plates at PPPL,                                               8/5/2005
  Williamson/Nelson/Reiersen                    plates and cladding. Issues need                                                                          Strykowsky         material and procurement
                                                                                                                     procure remainder.
                                                resolution. [Reiersen]                                                                                                       pkgs
 Modular Coil Type C Cladding   4/27/2005   6   Fabricate the first set of each          Concur
            FDR                                 cladding and chill plates at PPPL. The
  Williamson/Nelson/Reiersen                    remaining plates would be ordered
                                                                                                                     See Chit #5                          Williamson         Closed
                                                with outside vendor. Various options
                                                should be evaluated. [Chrzanowski]

 Modular Coil Type C Cladding   4/27/2005   7   Check cladding/chill plate design by     Concur
            FDR                                 jabbering just lot at PPPL before
                                                                                                                     See Chit #5                          Williamson         Closed
  Williamson/Nelson/Reiersen                    sending out for procurement.
                                                [Reiersen]
 Modular Coil Type C Cladding   4/27/2005   8   Identify side A and side B on the        Concur
                                                                                                                     Included in draft MCWF prep          Williamson /
            FDR                                 winding form when it comes through                                                                                           Closed
                                                                                                                     procedure, D-NCSX-MCF-001            Chrzanowski
  Williamson/Nelson/Reiersen                    the door. [Nelson]
 Modular Coil Type C Cladding   4/27/2005   9   Add a number to the parts that           Concur                      Cladding and chill plate asm         Williamson         Open pending release of    8/5/2005
            FDR                                 correspond to the web hole                                           drawings correlate part and tee                         cladding and chill plate
  Williamson/Nelson/Reiersen                    numbering scheme. [Nelson]                                           hole numbers.                                           asm drawings.
        VV Cooling Tube FDR     5/5/2005    1   Consider separating tube pairs, using    Concur Needs to pursue      Covered in 9.                            Goranson       NA                           7/30/2005
  Goranson/Nelson/Reiersen                      N NSTX-like attachment scheme (TIG-      backup plans in the
                                                welded clips) to allow increased         event that holding
                                                tolerances on tubes. [Zarnstorff]        tolerances is a problem.
                                                                                          This one of the options
                                                                                         for a backup plan

       VV Cooling Tube FDR      5/5/2005    2   Replace or supplement grafoil with       Concur, Consider but        Conductivity is not a problem.           Goranson       complete                   complete
   Goranson/Nelson/Reiersen                     thin sheet-copper 'Doily' to spread      should not affect tubing    Analysis shows configuration is
                                                heat/cooling over larger area. Glue      design                      adequate.
                                                down with high temperature caulk.
                                                May allow fewer clamp locations (or
                                                tubes?) [Zarnstorff]




      Status Date: 12/23/2004                                                                                   25
                                                                               NCSX Engineering CHIT Tracking Log


     Design Review                                                                       Review Board
  [Cog Engr/RLM/Chair]     Rvw Date   #        Chit Finding [Originator]               Recommendation                      Project Disposition        Responsibility              Status            Due Date
    VV Cooling Tube FDR    5/5/2005   3   Consider eliminating saddle between       Concur, Consider at          High temperature caulking              Goranson       complete                  complete
Goranson/Nelson/Reiersen                  heating tubes and grafoil. Replace        discretion of the cog        reliability and condudtivity
                                          with high temperature caulking.           engineer.                    unknown. Can not be used
                                          [Zarnstorff]                                                           without R&D. Grafoil proven and
                                                                                                                 analysis shows it to be adequate.

    VV Cooling Tube FDR    5/5/2005   4   Add a couple of unallocated conflates     Concur, Add as risk          Two additional flanges will be         Goranson       complete                      15-Jun
Goranson/Nelson/Reiersen                  on seal flange in vertical ports for      mitigation measure to        added.
                                          future flexibility. [Zarnstorff]          unused area.

    VV Cooling Tube FDR    5/5/2005   5   Determine E. V. P. duct responsibility    Concur                       Alternatives are under study.          Goranson       Option choise complete.   Decision
Goranson/Nelson/Reiersen                  and location options include: 1. buy                                                                                         Design of duct in         6/1/2005
                                          one transition duct, 2, put simple                                                                                           progress.                 Design done
                                          elbow on port 4. 3.special design of                                                                                                                   18June
                                          NB port option 2 probably cheapest,
                                          3 most expensive. [Nelson]

    VV Cooling Tube FDR    5/5/2005   6   Consider alternate clip configurations    Concur                       Contact area is not a problem.         Goranson       complete
Goranson/Nelson/Reiersen                  to increase contact area. [Zarnstorff]                                 Analysis shows limiting factor to
                                                                                                                 be distance between clips, not
                                                                                                                 area.
    VV Cooling Tube FDR    5/5/2005   7   Add seal collar just outwards of          Concur                       Mounting ring will be added to         Goranson       in work                       20-Jul
Goranson/Nelson/Reiersen                  lateral supports - all lateral supports                                duct, outside lateral supports, to
                                          must be inside cryostal. [Nelson]                                      interface boot and Cryostat.

    VV Cooling Tube FDR    5/5/2005   8   Check that headers are adequately         Concur                       Pressure drop is negligible.           Goranson       complete                      1-Jun
Goranson/Nelson/Reiersen                  sized to minimize pressure drop.                                       Calculation results will be added
                                          [Kalish]                                                               to DAC on tubing thermo-
                                                                                                                 hydraulics.
    VV Cooling Tube FDR    5/5/2005   9  Consider reviewing tubing installation     Concur                       Concepts will be tried on              Goranson       in work                       30-Jul
Goranson/Nelson/Reiersen                 techniques with shop/techs/ Who                                         prototype as a backup to baseline
                                         have similar NSTX experience before                                     design.
                                         finalizing installation methods/
                                         [Kalish]
    VV Cooling Tube FDR    5/5/2005   10 Firm up voltage standoff                   Concur                       Alternatives are under study.          Goranson       complete                      15-Jun
Goranson/Nelson/Reiersen                 requirements and check G11
                                         standoff/washers against
                                         requirements. (Consider tracking
                                         distance) [Kalish]
    VV Cooling Tube FDR    5/5/2005   11 1. Vacuum pumping duct/port                Concur                       Under study.                           Goranson       complete                      1-Jun
Goranson/Nelson/Reiersen                 location needs clarification. 2. max.
                                         vertical load on transition duct needs
                                         definition. [Dahlgren]
    VV Cooling Tube FDR    5/5/2005   12 Development of top level assembly          Concur, 121.271 calls        Top level assembly drawing will        Goranson       In work                       1-Aug
Goranson/Nelson/Reiersen                 drawing should be expedited along          this out. Needs to be        address.
                                         with a master BOM. [Reiersen]              incorporated in
                                                                                    assembly procedure.
    VV Cooling Tube FDR    5/5/2005   13 How are the control logic and              Concur                       Under study.                           Goranson       in work                       1-Aug
Goranson/Nelson/Reiersen                 algorithms going to be specified?
                                         [Reiersen]
    VV Cooling Tube FDR    5/5/2005   14 How will alignment of VV supports          Concur, 121.271 calls        Top level assembly drawing will        Goranson       in work                       1-Aug
Goranson/Nelson/Reiersen                 (esp. lateral supports) and sitting of     this out. Needs to be        address.
                                         preloads on spring packs be                incorporated in
                                         specified? [Reiersen]                      assembly procedure.




   Status Date: 12/23/2004                                                                                  26
                                                                                     NCSX Engineering CHIT Tracking Log


      Design Review                                                                        Review Board
   [Cog Engr/RLM/Chair]        Rvw Date    #        Chit Finding [Originator]            Recommendation                    Project Disposition          Responsibility          Status                 Due Date
     VV Cooling Tube FDR       5/5/2005    15 The weight/support interface issue       Concur                                                         Goranson/Johnson complete
                                                                                                                   Information is being added to ICD on ports.                                          15-Jul
 Goranson/Nelson/Reiersen                     with diagnostic needs to be worked.
                                              [Reiersen]


     VV Cooling Tube FDR       5/5/2005    16 Need to provide electronic copy of (x,   Concur                      Will be added to drawing/model files.        Cole     complete                       8-Jun
 Goranson/Nelson/Reiersen                     y, z) coordinates for tube vendor.
                                              [Freudenberg]
     VV Cooling Tube FDR       5/5/2005    17 Consider anner??? Tubes after            Concur, Discuss with        Tubing manufacturer will                 Goranson     Tube ordered for testing       1-Sep
 Goranson/Nelson/Reiersen                     forming for permeability and to          tubing vendor               measure. Specification
                                              reduce stiffness for easier assembly                                 requirements identify permeability
                                              [Dudek]                                                              issues.
     VV Cooling Tube FDR       5/5/2005    18 VV support design needs to be            Concur                      Supports will be reviewed and           Brown/Viola   in work                        1-Aug
 Goranson/Nelson/Reiersen                     reviewed by Viola and Brown to get                                   commented.
                                              there input re acceptability for field
                                              period and fural assembly. [Reiersen]
Modular Coil Type C Cladding   6/30/2005   1 The clamps need to be wider. Other        Concur                                                                            Revision of clamp
           FDR                                considerations that could be                                         Nelson to bring back marked up
                                                                                                                                                                         drawings is in progress.
 Williamson/Nelson/Reiersen                   incorporated into the clamp design                                   drawing with suggestions for          Williamson                                 8/5/2005
                                                                                                                                                                         All recommended
                                              are: 1) beveled inner edges. 2)                                      clamp revisions.
                                                                                                                                                                         changes appear feasible.
                                              make pads 1/8" instead of 1/4" 3)
Modular Coil Type C Cladding   6/30/2005   2 Recommend that Major Tool fabricate       Other
           FDR                                the lead block G-11 pieces and fit                                   Include MTM in bid process            PPPL            Open.                      8/12/2005
 Williamson/Nelson/Reiersen                   then to casting at or before for C1).
                                              [S. Raftopoulos]
Modular Coil Type C Cladding   6/30/2005   3 For the clamp Bellville washer cup,       Concur
           FDR                                have the piece masked so that there                                                                                        Note will be added to
                                                                                                                   Should be considered                  Williamson                                 8/5/2005
 Williamson/Nelson/Reiersen                   is no plating on the upper/outer                                                                                           drawing.
                                              surface on the TRC it had to be
Modular Coil Type C Cladding   6/30/2005   4 Change Kapton tape on chill plates to     Concur
           FDR                                glass reinforced Teflon tape to                                      Consider along with other options
                                                                                                                                                                         Instructions to be added
 Williamson/Nelson/Reiersen                   improve toughness. ( Due to short                                    for reducing staking risk, out only   Chrzanowski                                8/12/2005
                                                                                                                                                                         to winding procedure.
                                              between cladding and tee on TRC).                                    in regions of staking.
                                              [P. Heitzenroeder]
Modular Coil Type C Cladding   6/30/2005   5 Consider alternatives to G-10 for         Concur
           FDR                                bushings. Alternatively, need to
                                                                                                                   Should be remember for all such                       Note will be added to
 Williamson/Nelson/Reiersen                   make sure that laminate direction at                                                                       Williamson                                 8/5/2005
                                                                                                                   bushings (not just Type-C coil)                       drawings as required.
                                              glass- epoxy material is properly
                                              oriented to avoid fracturing. [P.
Modular Coil Type C Cladding   6/30/2005   6 Heitzenroeder] for kickless cable is
                                              Ensure that gap                          Concur                                                                            Design and assembly is
           FDR                                controlled to guarantee proper                                                                             Williamson      under review to verify     8/5/2005
 Williamson/Nelson/Reiersen                   contact for electrical interface could                                                                                     cable fitup.
                                              be note one assembly drawing to
Modular Coil Type C Cladding   6/30/2005   7 What is the status of all Type C Coil     Concur                                                                            Revision of interface
           FDR                                ICD's? Are they all completed and                                                                          Williamson      control documents is in    8/12/2005
 Williamson/Nelson/Reiersen                   signed? [B. Simmons]                                                                                                       progress.
Modular Coil Type C Cladding   6/30/2005   8 Add to charge that all previous           Concur                                                                            Open. Status of
           FDR                                applicable design review chits PDR                                                                         Williamson      previous review chits is   8/5/2005
 Williamson/Nelson/Reiersen                   and FDR have been resolved. [B.                                                                                            being reviewed.
Modular Coil Type C Cladding   6/30/2005      Simmons]
                                           9 List items to be procured and use as      Concur
           FDR                                 checklist that drawings and, where
 Williamson/Nelson/Reiersen                    needed, specification are ready [F.
                                               Malinowski]                                                                                               Williamson      Master BOM is in progress. 8/5/2005




     Status Date: 12/23/2004                                                                                  27
                                                                                    NCSX Engineering CHIT Tracking Log


        Design Review                                                                      Review Board
     [Cog Engr/RLM/Chair]       Rvw Date   #        Chit Finding [Originator]            Recommendation                Project Disposition     Responsibility             Status                 Due Date
Modular Coil Type C Cladding   6/30/2005   10 Close the loop with Chrzanowski on       Concur                                                                   Closed. List of needed
           FDR                                additional drawings needed in                                                                  Nelson             asm drawings has been              ---
 Williamson/Nelson/Reiersen                   fabrication. [W. Reiersen]                                                                                        prepared. (Chrzanowski
                                                                                                                                                                email 7/1/05)
Modular Coil Type C Cladding   6/30/2005   11 Need to trim bottom of chill plates      Concur
                                                                                                                                                                Revision of flat pattern in
           FDR                                behind lead block. [W. Reiersen]                                                               Williamson                                       8/5/2005
                                                                                                                                                                progress.
 Williamson/Nelson/Reiersen
Modular Coil Type C Cladding   6/30/2005   12 Geoff Gettelfinger recommended           Concur
           FDR                                using closed loop cooling for the lead                                                                            Design revision is in
 Williamson/Nelson/Reiersen                   block chill plate. Bring in another                              Consider                      Williamson                                       8/5/2005
                                                                                                                                                                progress.
                                              source of Gn2 or mixed flow for the
Modular Coil Type C Cladding   6/30/2005   13 terminal area. [W. Reiersen]
                                              Details of how to seal the terminal      Concur                                                                   Review TRC approach,
           FDR                                 block for VPI need to be worked out.                                                          Williamson         add details to coil asm       8/12/2005
 Williamson/Nelson/Reiersen                    [W. Reiersen]                                                                                                    drawing.
Modular Coil Type C Cladding   6/30/2005   14 Indicate which of the studs need to      Concur
           FDR                                be removed after VPI. [R. Reiersen]                                                                               Additional views and
 Williamson/Nelson/Reiersen                                                                                                                  Williamson         notes added to top-level      8/12/2005
                                                                                                                                                                asm drawing.

Modular Coil Type C Cladding   6/30/2005   15 Requirement is two co-wound loops        Concur
                                                                                                                                                                Revision of coil asm
           FDR                                with twisted leads being routed to                                                             Williamson                                       8/12/2005
                                                                                                                                                                drawing is in progress.
 Williamson/Nelson/Reiersen                   the Pomona box. [W. Reiersen]
Modular Coil Type C Cladding   6/30/2005   16 Still need to work out details of        Concur
           FDR                                electrical isolation of coolant tubes,
 Williamson/Nelson/Reiersen                   especially round poloidal bread. [W.                                                           Williamson         Design is in progress.        8/12/2005
                                              Reiersen]

Modular Coil Type C Cladding   6/30/2005   17 Assembly procedure should required       Concur
           FDR                                removal of the copper tubing in the                                                                               To be added to coil post-
                                                                                                                                             Chrzanowski                                      8/12/2005
 Williamson/Nelson/Reiersen                   bag mold assembly [W. Reiersen]                                                                                   VPI procedure.

Modular Coil Type C Cladding   6/30/2005   18 Resolve clamp details based on TRC    Concur                                                   Williamson         Revision of clamp             8/5/2005
           FDR                                experience (see back). Issues:                                                                                    drawings is in progress.
 Williamson/Nelson/Reiersen                   Washer procured were thicker. Cup                                                                                 All recommended
                                              may need to be longer to retain                                                                                   changes appear feasible.
                                              washers 2) The screw that retains the
Modular Coil Type C Cladding   6/30/2005      Verify back together have been
                                           19 spring that PDR chits may inhibit     Concur
           FDR                                addressed. [ W. Reiersen]
 Williamson/Nelson/Reiersen                                                                                                                                     Closed. All PDR chits have
                                                                                                                                             Williamson                                            ---
                                                                                                                                                                been addressed.


Modular Coil Type C Cladding   6/30/2005   20 Make the coil clamps uniform for all     Concur
           FDR                                Coil Types c and A, B - more
 Williamson/Nelson/Reiersen                   economical. [J. Chrzanowski]                                                                                      Design approach appears
                                                                                                                                                                feasible and will be
                                                                                                               Good idea if do-able.         Williamson         incorporated in the next  8/12/2005
                                                                                                                                                                revision of the clamp asm
                                                                                                                                                                drawings.


Vacuum Vessel Prep Station     8/11/2005   1   Need to address how ends are lined      Concur
    Brown/Nelson/Cole                          up for installation in Test Cell.
                                               [Reiersen]




     Status Date: 12/23/2004                                                                              28
                                                                                     NCSX Engineering CHIT Tracking Log


        Design Review                                                                      Review Board
     [Cog Engr/RLM/Chair]        Rvw Date   #         Chit Finding [Originator]          Recommendation             Project Disposition   Responsibility   Status   Due Date
 Vacuum Vessel Prep Station     8/11/2005   2   Review design with shop                Concur
      Brown/Nelson/Cole                         personnel/FOM group to identify ways
                                                of simplifying fabrication. [Reiersen]



 Vacuum Vessel Prep Station     8/11/2005   3   Consider worm wheel and drive to         Concur
     Brown/Nelson/Cole                          manually move the Period and acts
                                                as a secondary lock. [Labik]


 Vacuum Vessel Prep Station     8/11/2005   4   Need to provide assurance that the       Concur
     Brown/Nelson/Cole                          vessel won't suddenly move and
                                                cause injury while vessel work is
                                                taking place or people are other wise
                                                near the vessel. [Levine
 Vacuum Vessel Prep Station     8/11/2005   5   A safe method for moving or rotating     Concur
     Brown/Nelson/Cole                          the vessel on the support stand
                                                needs to be devised. [Levine]


 Vacuum Vessel Prep Station     8/11/2005   6   Consider adding feature to provide       Concur
     Brown/Nelson/Cole                          lateral stability. [Reiersen]




 Vacuum Vessel Prep Station     8/11/2005   7   Consider fabricating new part rather     Concur
     Brown/Nelson/Cole                          than modifying blank off flange.
                                                [Reiersen]



Crane Motion Test Peer Review   8/12/2005   1   This is a good "proof of principal"      Concur (see chit 2)
    Brown/Nelson/Dudek                          Consider performing and actuators
                                                this test again, this time using the
                                                metrology equipment to precisely
                                                align everything and map out the
Crane Motion Test Peer Review   8/12/2005   2   resolution/precision of the process.
                                                Perform an FMEA of the assembly          Concur
    Brown/Nelson/Dudek                          procedure to assure that recovery
                                                provisions exist for all creditable
                                                failure modes. [Reiersen]

Crane Motion Test Peer Review   8/12/2005   3   Need a recovery plan if a laser 'Dies'   Concur (see chit 2)
    Brown/Nelson/Dudek                          during the lift. [Dudek]




Crane Motion Test Peer Review   8/12/2005   4   What are the seismic criteria for lifts Concur
    Brown/Nelson/Dudek                          that might take place over a period of
                                                days? [Cole]


   TF Coil FDR                  8/12/2005   1   Consider using G11 shims between         Concur
   Kalish/Nelson/Reiersen                       coil & wedge castings (outside gap
                                                filling) in the pre-load corner areas.
                                                VPI modulus may not distribute pre-
                                                load as well. [Dahlgren]




      Status Date: 12/23/2004                                                                                  29
                                                                                   NCSX Engineering CHIT Tracking Log


         Design Review                                                                        Review Board
     [Cog Engr/RLM/Chair]       Rvw Date   #         Chit Finding [Originator]             Recommendation                  Project Disposition         Responsibility      Status     Due Date
    TF Coil FDR                8/12/2005   2   Mike Zarnstorff flexibility               Other - Flexibility
    Kalish/Nelson/Reiersen                     requirements need to be revisited @       should be assessed but
                                               .5T, 16.2 kA (T.F) and 1.7 Hi B PF        not in MIE scope.
                                               currents, ooploads are substantial
                                               I.E. 600 lbs/ inch peak. [Dahlgren]
    TF Coil FDR                8/12/2005   3   Confirm adequate clearance @ upper        Concur
    Kalish/Nelson/Reiersen                     & lower TF supports to allow for
                                               lateral TF deflections. [Dahlgren]

    TF Coil FDR                8/12/2005   4   Have MCWF revisions (chamfer) been        Concur - Should be
    Kalish/Nelson/Reiersen                     incorporated in EIO contract?             confirmed
                                               [Neilson]
    TF Coil FDR                8/12/2005   5   Investigate cost/benefits of doing        Concur
    Kalish/Nelson/Reiersen                     qualification testing of first article.
                                               [Reiersen]


    TF Coil FDR                8/12/2005   6   Need to address instrumentation and       Concur
    Kalish/Nelson/Reiersen                     control requirements and design.
                                               [Reiersen]
    TF Coil FDR                8/12/2005   7   Analysis of clearances needs to be        Concur
    Kalish/Nelson/Reiersen                     documented with special attention to
                                               the model revisions and versions that
                                               were used in the analysis. [Reiersen]

    TF Coil FDR                8/12/2005   8   SRD needs to be revised to show for       Concur
    Kalish/Nelson/Reiersen                     each performance requirement where
                                               it is verified that it is met. If by
                                               analysis the specific analysis report
                                               should be identified. If by inspection
                                               or test, when this would be done.
                                               [Reiersen]
    TF Coil FDR                8/12/2005   9   Interfaces should be discussed with       Concur
    Kalish/Nelson/Reiersen                     interfacing WBS managers.
                                               Concurrence should be obtained that
                                               existing interface documentation is
                                               adequate. [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005   1   Posted analysis reports needing to be     Concur                    Heat balance and                 Goranson/Freudenberg   in work   11/5/2005
    Goranson/Reiersen/Nelson                   updated should be flagged as such.                                  thermohydraulics analyses will be
                                               [Reiersen]                                                          redone to reflect change from
                                                                                                                   tubing to flex hose.
Vacuum Vessel Systems FDR      9/16/2005   2   Assembly drawing should be                Concur                    Assembly drawings will             Goranson             in work     5-Dec
    Goranson/Reiersen/Nelson                   generated for each station in field                                 correspond to assembly stages at
                                               period assembly. They should be                                     each station.
                                               reviewed for adequacy by Viola (cog)
                                               and Dudek (RLM). [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005   3   Manned access port design basis           Concur                    SRD and ICDs are being reviewed. Goranson               in work    15-Dec
    Goranson/Reiersen/Nelson                   analyses and interfaces (e.g.
                                               w/cryostat) are incomplete.
                                               [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005   4   Check on requirements on location         Concur                    Areement with vacuum systems       Goranson             In work   11/1/2005
    Goranson/Reiersen/Nelson                   for insulating breaks in personnel                                  was to have break part of vacuum
                                               access part and pumping duct.                                       system outside WBS 12. Will
                                               [Reiersen]                                                          interface with Pumping to assure
                                                                                                                   interface is clear.




      Status Date: 12/23/2004                                                                                 30
                                                                                  NCSX Engineering CHIT Tracking Log


        Design Review                                                                      Review Board
     [Cog Engr/RLM/Chair]       Rvw Date   #         Chit Finding [Originator]           Recommendation                    Project Disposition        Responsibility    Status      Due Date
Vacuum Vessel Systems FDR      9/16/2005   5   Verify that budget and schedule         Concur                                                       Goranson           In work    10/15/2005
    Goranson/Reiersen/Nelson                   activities for personnel access part is
                                               in the project baseline. [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005   6   MSDS sheets should be provided and Concur                          IH has MSDS sheets.               Goranson           In work.     10-Jan
    Goranson/Reiersen/Nelson                   discussed to establish that no IH                                  Convesations will be documented
                                               issues exist for nonstandard materials                             before procurement.
                                               that do not have explicit IH approval.
                                               [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005   7   Electrical isolation of sheet metal     Concur                     Assembly drawing shows breaks.    Goranson           complete
    Goranson/Reiersen/Nelson                   strips need to be carried through on
                                               detail drawings. [Reiersen]



Vacuum Vessel Systems FDR      9/16/2005   8   How have the personnel access and     Concur                       Per CHIT 3                                           covered
    Goranson/Reiersen/Nelson                   NB transition ducts been addressed in
                                               the design basis analyses? [Reiersen]

Vacuum Vessel Systems FDR      9/16/2005   9   Is test program for insulating          Concur - Should         Will check and add if missing        Goranson           planned      1-Dec
    Goranson/Reiersen/Nelson                   materials in the baseline? [Reiersen]   coordinated with WBS 17


Vacuum Vessel Systems FDR      9/16/2005 10 Interface requirements with central        Concur                     Will follow other WBS 12 work     Goranson           planned      15-Feb
    Goranson/Reiersen/Nelson                IEC need to be developed -signed
                                            processing, control logic, etc. Ditto
                                            for WBS 4 (cabling, inductive
                                            heating). [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005 11 Heating and cooling system appears         Concur                     R&D test is scheduled . Analysis is Goranson         in work      12-Nov
    Goranson/Reiersen/Nelson                to need re-design. Heat transfer                                      scheduled.
                                            across SS braid for helium bakeout
                                            system. [Reiersen]
Vacuum Vessel Systems FDR      9/16/2005 12 Interface list not complete - perhaps      Concur                     Meeting will be called in near    Goranson           planned      1-Dec
    Goranson/Reiersen/Nelson                a separate meeting? [B. Simmons]                                      future.


Vacuum Vessel Systems FDR      9/16/2005 13 Update calculations (e.g., 002 OCE,        Concur                     per CHIT1                                            covered
    Goranson/Reiersen/Nelson                etc._)  [B. Simmons]


Vacuum Vessel Systems FDR      9/16/2005 14 Investigate implications of inductive      Concur                     Will include in plans                                planned      5-Dec
    Goranson/Reiersen/Nelson                heating and it's possible interference
                                            with thermocouple reading. NSTX
                                            has some experience with resistive
Vacuum Vessel Systems FDR      9/16/2005 15 New flex bakeout tubes must be             Concur                     Calculations complete.            Goranson/Kalish    Complete
    Goranson/Reiersen/Nelson                evaluated with respect to may
                                            pressure capabilities of helium
                                            blower. [M. Kalish]
Vacuum Vessel Systems FDR      9/16/2005 16 The use of conflat electrical feeding      Concur - to be          Simplified interface utilizing       Johnson            in work
    Goranson/Reiersen/Nelson                for magnetic sensors may be                addressed by Diagnostic existing cf flanges being designed
                                            prohibitively expensive. The               and coordinated with
                                            feasibility of conflat - compatible        Vacuum Vessel Cog.
                                            rubber gasket feed thus needs to be
Vacuum Vessel Systems FDR      9/16/2005 17 verified. [D. Johnson]
                                            Put thermocouple on both sides of          Concur                                                       Goranson/A&A       Complete
    Goranson/Reiersen/Nelson                beam port ˜ near midplane to sense
                                            bake adequacy and any beam scrape
                                            off heating.                  [M.
                                            Zarnstorff]




      Status Date: 12/23/2004                                                                                31
                                                                                 NCSX Engineering CHIT Tracking Log


        Design Review                                                                     Review Board
     [Cog Engr/RLM/Chair]       Rvw Date  #       Chit Finding [Originator]             Recommendation                       Project Disposition            Responsibility    Status     Due Date
Vacuum Vessel Systems FDR      9/16/2005 18 Consider using 350 C pyrogel AR5401       Concur                        Availability and cost must be         Goranson           In work.    10-Jan
    Goranson/Reiersen/Nelson                           -Much less dust                                              considered.
                                                                          -More
                                            durable [M. Zarnstorff]
Vacuum Vessel Systems FDR      9/16/2005 19 Should identification of ? Fabricating    Concur - Cog. should                                                Goranson           planned     10-Jan
    Goranson/Reiersen/Nelson                vendors be a part of FDR-Readiness?       investigate ability of
                                            We have some "No Bid" experience at       industry to support
                                            NCSX and the fabric assembles sound       procurement.
                                            like another iteration on the Theme.
                                            [G. Gettelfinger]
Vacuum Vessel Systems FDR      9/16/2005 20 Audit ICD's for thoroghness. [G.          Concur                        Per CHIT 12                                              covered
    Goranson/Reiersen/Nelson                Gettelfinger]



Vacuum Vessel Systems FDR      9/16/2005 21 The aspenite insulation needs to be       Concur                        Review will be held before            Goranson           scheduled    5-Jan
    Goranson/Reiersen/Nelson                IH-reviewed soon. A lack of such                                        procurement begins
                                            review prior to designing it in is poor
                                            procedure.                [G.
                                            Gettelfinger]

Vacuum Vessel Systems FDR      9/16/2005 22 Drop-Out circuit required to de-          Concur                        Will include in plans and interfaces Goranson             planned    15-Jan
    Goranson/Reiersen/Nelson                energize heating during magnet ops -
                                            open circuit.    [G. Gettelfinger]

Vacuum Vessel Systems FDR      9/16/2005   23 Need to coordinate with the Cryostat    Concur                        Pumping duct approved before          Goranson            In work     5-Oct
    Goranson/Reiersen/Nelson                  folks and make sure they can                                          design. Cryo people will be
                                              interface with the Man Port. Also                                     consulted.
                                              work with the pumping duct folks to
                                              verify this meets pumping interfaces.
                                              [M. Cole]
Vacuum Vessel Systems FDR      9/16/2005   24 Is there a table that could go on the   Concur - Lengths are all       Lengths are all the same - all 10"   Goranson           Complete
    Goranson/Reiersen/Nelson                  drawings that defines the length of     the same - all 10"            lengths.
                                              heater cable for each of the ports?     lengths.
                                              This would be useful for ordering all
                                              the heater tapes. [D. Williamson and
                                              M. Cole]
Vacuum Vessel Systems FDR      9/16/2005   25 Need to review all ICDs for current     Concur                        Per CHIT 12                                              Covered
    Goranson/Reiersen/Nelson                  status and completeness, including
                                              a. Cryostat openings
                                              b. Mag loop terminations
                                              c. Heater tape controls
                                              d. Etc.
                                                                   [B. Nelson]


Vacuum Vessel Systems FDR      9/16/2005   26  Need to provide assembly spec that     Concur                        SRD will be revisited and                                Planned      5-Jan
    Goranson/Reiersen/Nelson                  references SRD quality conformance                                    aasembly spec is in work.
                                              matrix                     a. Need
                                              assembly spec.
Vacuum Vessel Systems FDR      9/16/2005            b. Need phases of assembly
                                           27 Ensure that all to update SRD [B.       Concur                        Per CHIT 2                                               Covered
    Goranson/Reiersen/Nelson                  have required drawings in process or
                                              planned.     [B. Nelson




      Status Date: 12/23/2004                                                                                  32
                                                                                   NCSX Engineering CHIT Tracking Log


        Design Review                                                                        Review Board
     [Cog Engr/RLM/Chair]       Rvw Date    #       Chit Finding [Originator]              Recommendation                     Project Disposition           Responsibility      Status       Due Date
Vacuum Vessel Systems FDR      9/16/2005   28 Determine whether the manned               Concur                      MT will be asked to price one with   Goranson/Viola       In work        1-Dec
    Goranson/Reiersen/Nelson                  access port will be used for pumping                                   hole.
                                              prior to procurement of all three
                                              covers blankoff cover. A. Yes it will ,
Vacuum Vessel Systems FDR      9/16/2005   29 Check to see if new manned access          Concur                      Per CHIT 5                                                covered
    Goranson/Reiersen/Nelson                  port is in the cost baseline. [B.
                                              Nelson]


Vacuum Vessel Systems FDR      9/16/2005   30 Check to see if pyrogel is ok with       Concur                        Previously approved provided                              Complete
    Goranson/Reiersen/Nelson                  Jerry Levine. [B. Nelson]                                              temperature stays below 250 C.
Vacuum Vessel Systems FDR      9/16/2005   31 Electrical isolation at port 12 needs to Concur                        Need was anticipated and included Goranson/A&A            Complete
    Goranson/Reiersen/Nelson                  be preserved (all sheet metal                                          in drawings.
                                              fabrications spanning electrical
                                              breaks) [B. Nelson]
Vacuum Vessel Systems FDR      9/16/2005   32 Consider port overboot over pyrogel      Concur                        Boot material will be either         Goranson            under study    10-Jan
    Goranson/Reiersen/Nelson                  to reduce dust emissions and to                                        impregnated or very tight weave
                                              improve durability. Could get zippers                                  to prevent dust migration.
                                              installed for uniform precompression
                                              of pyrogel.            [B. Nelson]

Vacuum Vessel Systems FDR      9/16/2005   33 Get corrugated pyrogel/vectran or          Concur                      Facing fabric for pyrogel under      Goranson            under study    10-Jan
    Goranson/Reiersen/Nelson                  pyrogel/nomex sandwich to go over                                      study
                                              the modular coils. [B. Nelson]




Vacuum Vessel Systems FDR      9/16/2005   34 Check with Paul Sitka and Ray              Concur                      per CHIT 14                                               covered
    Goranson/Reiersen/Nelson                  Gernhardt for T/C isolation. [B.
                                              Nelson]
Vacuum Vessel Systems FDR      9/16/2005   35 Add T/C in region of closest approach      Concur                                                           Goranson/A&A         Complete
    Goranson/Reiersen/Nelson                  to plasma and at close approach of
                                              nbi.         [B. Nelson]
Vacuum Vessel Systems FDR      9/16/2005   36 Use single field period analysis to        Concur                      Test will be done at MT. Analyses    Viola/Goranson     Work planned.    2-Jan
    Goranson/Reiersen/Nelson                  predict deflections during leak check.                                 are complete.
                                              [B. Nelson]


  Magnetic Diagnostic PDR      ######      1   Does ratcheting of Vacuum Vessel          Concur
    Labik/Johnson/Dudek                        temperature affect design? [Dudek]


  Magnetic Diagnostic PDR      ######      2   At location where conductors are in       Concur
    Labik/Johnson/Dudek                        danger of being bumped by modular
                                               coils consider providing 'armor' to
                                               protect. [Dudek]



  Magnetic Diagnostic PDR      ######      3   Investigate the possibility of sharp or   Concur (see chit #2)
    Labik/Johnson/Dudek                        pointed protuberances on the
                                               modular coils poking these coils and
                                               leads. May need armor. [Viola]




      Status Date: 12/23/2004                                                                                   33
                                                                                      NCSX Engineering CHIT Tracking Log


        Design Review                                                                         Review Board
    [Cog Engr/RLM/Chair]         Rvw Date    #         Chit Finding [Originator]             Recommendation                   Project Disposition             Responsibility            Status     Due Date
  Magnetic Diagnostic PDR        ######      4   Consider bringing the leads of some      Disagree (NB port
    Labik/Johsnon/Dudek                          fraction of the coils out along port 4   access is needed for
                                                 or NB port. [Viola]                      other utilities.)



  Magnetic Diagnostic PDR        ######      5   Paul Goranson should confirm that        Concur
    Labik/Johsnon/Dudek                          thermocouples are to be installed
                                                 after the vessel saddle loops and
                                                 their loops have been installed.
                                                 [Johnson]

  Magnetic Diagnostic PDR        ######      6   ONLY REALLY NEED 1 toroidally            Other (Consider Physics
    Labik/Johsnon/Dudek                          continuous measurement - can sum         to meet next week to
                                                 partial loops, and add to continuous     discuss.
                                                 loop to get V loop at other, 1)
                                                 locations (more work ex-vessel)
                                                 however [Menard]
  Magnetic Diagnostic PDR        ######      7   Investigate impact of noise on mode      Other (See chit #6)
    Labik/Johsnon/Dudek                          i.d. with "random" coil set.
                                                 [Fredrickson]




  Magnetic Diagnostic PDR        ######      8   Consider designing NSS loops             Other (See chit #6)
    Labik/Johsnon/Dudek                          optimized w.r.t. most likely coil
                                                 position errors rather than helically
                                                 symmetric equilibria - is above/below
Manned Access Port and Lateral   ######      1   Check loads to include interior          Concur (Consider            The interior components are not           goranson               complete
       Support FDR                               components of vessel molytiles.          whether design              part of MIE and there is no criteria
  Goranson/Nelson/Reiersen                       [Dahlgren]                               modification is             for upgrade requirements. VV
Manned Access Port and Lateral   ######      2   Consider design modification to avoid    appropriate)
                                                                                          Concur                      lateral supportsbe only to 150 C
                                                                                                                         Bakeout will are not required          goranson               complete
       Support FDR                               possibly overheating the G11 block                                   during initial operation when man
  Goranson/Nelson/Reiersen                       during bakeout at 350 degrees.                                          access port is used; G11 is
                                                 [Kalish]                                                              adequate. An improved design(
Manned Access Port and Lateral   ######      3   Put magnetic permeability issue of       Concur                      The exact limit for the                goranson/brooks            in work    10-Feb
       Support FDR                               flange to bed adequacy [Gettelfinger]                                permeability will be calculated.
  Goranson/Nelson/Reiersen

Manned Access Port and Lateral   ######      4   Permeability of wire seal flanges need   Concur                      per chit366                                                      covered
       Support FDR                               to be addressed in procurement plan
  Goranson/Nelson/Reiersen                       before authorizing procurement
                                                 [Reiersen]
Manned Access Port and Lateral   ######      5   Obtain Project Head approval of 21"      Concur (Have site           Port access is approved by Project                               complete
       Support FDR                               bore size of access holes. (safely,      protection people           provided two such entries are
  Goranson/Nelson/Reiersen                       safely, safely) [Gettelfinger]           review emergency            open at all times during entry.
  Vacuum Vessel Interfaces       12/1/2005   1   The location of the ion gauges, gas      egress per Levine
                                                                                          Concur                      No additional requirments for             Blanchard      being evaluated    1/30/2006
  Goranson/Nelson/Reiersen                       injectors and GDC probes needs to be                                 WBS12 except addition of
                                                 defined "they should have high                                       requirements into an ICD.
                                                 conductance to the main chamber




      Status Date: 12/23/2004                                                                                    34
                                                                                NCSX Engineering CHIT Tracking Log


     Design Review                                                                       Review Board
  [Cog Engr/RLM/Chair]      Rvw Date   #          Chit Finding [Originator]            Recommendation                    Project Disposition        Responsibility                  Status         Due Date
Vacuum Vessel Interfaces   12/1/2005   2    Since GDC has been dominated for         Concur                     Capability of bakeout is already blanchard/goransonin work                         30-Jan
Goranson/Nelson/Reiersen                    day 1 and the TVP's duct has a fairly                               part of man access port. Pumping
                                            large surface area relative to the VV,                              port not part of WBS12. The
                                            bakeout of the duct should be                                       requirement to bake ducts needs
                                            considered. [Blanchard]                                             mention in SRD.

Vacuum Vessel Interfaces   12/1/2005   3    Is the WBS 12 local ITC sensors          Concur                     Needs clarification before local      sichta/goranson being evaluated               28-Feb
Goranson/Nelson/Reiersen                    adequate? Should klixon/bi-metal                                    I&C FDR
                                            temperature switches be added for
                                            over-temperature protection?
                                            [Sichta]
Vacuum Vessel Interfaces   12/1/2005   4    IH aspects of ground thermal             Concur                     Needs to be done before                                 being evaluated
                                                                                                                                                    gettlefinger/goranson                          2/3/2006
Goranson/Nelson/Reiersen                    insulation dust must be fully                                       insulation FDR
                                            understood. Gettelfinger can assist.
                                            [Gettelfinger]
Vacuum Vessel Interfaces   12/1/2005   5    Port & Port extension insulation         Concur                     Work on ports complete, port         gettlefinger/gora   evaluation in progress     15-Feb
Goranson/Nelson/Reiersen                    scheme must be specified and must                                   extensions not part of MIE. Port     nson
                                            have a semi-hermetic cover.                                         12 captured in chit 9
                                            [Gettelfinger]
Vacuum Vessel Interfaces   12/1/2005   6    Consider using bi-metallic switches      Concur (Agree but          NSTX operators will be consulted     goranson            under evaluation           15-Feb
Goranson/Nelson/Reiersen                    for overtemperture protection            check if they are
                                            [Nelson]                                 magnetic)
Vacuum Vessel Interfaces   12/1/2005   7    Put ground connection on pump duct.      Concur ( agree, but        Connection will be added to VV       goranson            scheduled                  20-Feb
Goranson/Nelson/Reiersen                    [Nelson]                                 beware of carrying fault   drawing and interface mentioned
                                                                                     current through vacuum     in ICD
                                                                                     seal.
Vacuum Vessel Interfaces   12/1/2005   8    Resolve how we heat the VV to 150 c      Concur                     VV has capability of heating to      goranson            complete
Goranson/Nelson/Reiersen                    [Nelson]                                                            150 C with either helium or hot
                                                                                                                nitrogen. Operators will decide
                                                                                                                heat source. Choice does not
                                                                                                                affect VV design or ICD.
Vacuum Vessel Interfaces   12/1/2005   9    Resolve port 12 interface with double    Concur                     may require double boot              gettlefinger/gora   under evaluation           15-Feb
Goranson/Nelson/Reiersen                    boots. [Nelson]                                                                                          nson
Vacuum Vessel Interfaces   12/1/2005   10   Review and update pressure drop          Concur                     DAC and ICD will be updated          goranson            DAC complete, ICD needs    1-Feb
Goranson/Nelson/Reiersen                    calculation with corrugated tube                                                                                             update
                                            design. [Nelson]
Vacuum Vessel Interfaces   12/1/2005   11   Reduce MC pyrogel thickness to 3/8"      Concur                     Drawings will indicate 3/8"          goranson            Scheduled                  8-Feb
Goranson/Nelson/Reiersen                    to pressure assembly clearances.
                                            [Nelson]
Vacuum Vessel Interfaces   12/1/2005   12   Flux loops on modular coils. Need to     Concur                     Diagnostic people need to review     johnson             in work                    1-Feb
Goranson/Nelson/Reiersen                    address T limits, voltage isolation
                                            [Nelson]
Vacuum Vessel Interfaces   12/1/2005   13   Review and update DAC for vertical       Concur                     captured by chit 18                  goranson
Goranson/Nelson/Reiersen                    support rods. Determine max total
                                            load. [Nelson]
Vacuum Vessel Interfaces   12/1/2005   14   Provide voltage isolation                Concur                     needs to be captured by ICD or       goranson            evaluation in progress     1-Feb
Goranson/Nelson/Reiersen                    requirements and address                                            SRD
                                            robustness. [Nelson]




Vacuum Vessel Interfaces   12/1/2005   15 Need to figure out how we are going        Concur                     calculations need to be performed    goranson/cole       evaluation in progress     15-Feb
Goranson/Nelson/Reiersen                  to support spacer especially if we are                                to determine port capability
                                          going to use the port. [Nelson]




   Status Date: 12/23/2004                                                                                 35
                                                                                NCSX Engineering CHIT Tracking Log


       Design Review                                                                      Review Board
    [Cog Engr/RLM/Chair]       Rvw Date   #        Chit Finding [Originator]            Recommendation                    Project Disposition          Responsibility           Status   Due Date
  Vacuum Vessel Interfaces    12/1/2005   16 Spacer with cons need analysis           Concur                     model will be run on NASTRAN        dahlgren/goranso in work             15-Feb
  Goranson/Nelson/Reiersen                   (structrued). [Nelson]                                              and results added to DAC 007        n
  Vacuum Vessel Interfaces    12/1/2005   17 Need to cusped up documentation of       Concur                     Port diagnostics ICD will add       goranson         in work            30-Jan
  Goranson/Nelson/Reiersen                   max allowable port loads. [Nelson]                                  details on max loads permitted on
                                                                                                                 ports and VV including future
                                                                                                                 upgrades
   Vacuum Vessel Interfaces   12/1/2005   18 Need document number for part            Concur                     needs to be on ICD                  goranson/cole/jo in work             1-Feb
   Goranson/Nelson/Reiersen                  usage 1CD [Nelson]                                                                                      hnson
Brown/Nelson/Reiersen         12/8/2005   1 Prototype attachment of stuff             Concur
      Station 1 Peer Review                  installed on station 1 on PVVS or put
                                             in oven to heat to 380C. [Nelson]

Brown/Nelson/Reiersen         12/8/2005   2  Heater tape and coolant lines go to      Concur
      Station 1 Peer Review                  380C Things that contact those
                                             elements should be qualified to 400C.
                                             [Cole]
Brown/Nelson/Reiersen         12/8/2005   3 The station 1 support stands need to      Concur
      Station 1 Peer Review                  hold the VV with stiffness & rigidity.
                                             May require bracing of the VV H floor.
                                              [Raftopoulos]
Brown/Nelson/Reiersen         12/8/2005   4 For the Cryostat interface mounting       Concur
      Station 1 Peer Review                  flange, the RTV will degrade (crumble
                                             if exposed to cryogenic temps.
                                             [Raftopoulos]
Brown/Nelson/Reiersen         12/8/2005   5 Consider field brazing the horse collar   Concur
      Station 1 Peer Review                  to its support split ring and weld the
                                             split seam on the support split ring.
                                             [Labik]
Brown/Nelson/Reiersen         12/8/2005   6 Consider potential form welding to        Concur
      Station 1 Peer Review                  distract flatness and implication or
                                             Cryostat interface flange. [Phelps]
Brown/Nelson/Reiersen         12/8/2005   7 Type of ink acceptable for marking on     Concur
      Station 1 Peer Review                  Inconel 25 Vessel, chlorides, Halides,
                                             corrosion, stress corrosion cracking,
                                             smoking, etc. [Phelps]
Brown/Nelson/Reiersen         12/8/2005   8 Step 2.4 replace soft O-ring with soft    Concur
      Station 1 Peer Review                  metal (Alorco) to protect surface.
                                             Need Dwg's (DXF) from Tom Brown.
                                             [Dudek]
Brown/Nelson/Reiersen         12/8/2005   9 Look at detail of lifting ends (Viola)    Concur
      Station 1 Peer Review                  hoist ring may double back (Viola)
                                             develop balance plan. [Viola]
Brown/Nelson/Reiersen         12/8/2005   10 Suggest PPPL to perform independent      Disagree [Perform
      Station 1 Peer Review                  measurement to verify MTM                independent verification
                                             metrology at MTM facilities instead of   at PPPL]
                                             upon receipt At PPPL. Step 1.2.1.3
                                             [Strykowsky]
Brown/Nelson/Reiersen         12/8/2005   11 Need metrology/inspection procedure      Concur
      Station 1 Peer Review                  for determining whether the VVSA is
                                             acceptable. Add step in assembly
                                             sequence for accepting /rejecting
                                             VVSA the VVSA includes many parts
                                             in addition to the VV period
                                             assembly. [Reiersen]




      Status Date: 12/23/2004                                                                               36
                                                                                     NCSX Engineering CHIT Tracking Log


        Design Review                                                                          Review Board
     [Cog Engr/RLM/Chair]         Rvw Date   #       Chit Finding [Originator]               Recommendation                    Project Disposition           Responsibility    Status   Due Date
Brown/Nelson/Reiersen            12/8/2005   12 Provide guidance to MTM on how we          Concur
      Station 1 Peer Review                     would like the parts packaged, e.g.
                                                segregate parts needed for Station 1
                                                from parts not needed until final
                                                assembly of a field period. [Reiersen]

Brown/Nelson/Reiersen            12/8/2005   13 Identify drawings needed (list)            Concur
      Station 1 Peer Review                     responsible person & need date.
                                                [Viola]
Brown/Nelson/Reiersen            12/8/2005   14 Add all fiducials that we think we'll      Concur
      Station 1 Peer Review                     need for FPA and future tasks during
                                                this phase. Accessibility to PFC
                                                surface will never be better.
                                                [Raftopoulos]
Brown/Nelson/Reiersen            12/8/2005   15 Use laser tracking to verify loop          Concur
      Station 1 Peer Review                     measurements technologies on the
                                                VVSA. [Nelson]
Labik/ Johnson/Dudek             ######      1   The installation of the saddle loops      Concur                     Agreed. See chit 3. The personnel     G Labik and
                      External                  involves a metrology procedure using                                  will be identified and details will                 S
  Saddle Loops for Template                     an "ideal surface" as a basis. This                                   be identified.                        Raftopoulos and
       Fabrication FDR                          procedure and the associated                                                                                         M Viola
                                                resources need to be identified and
                                                presented at the review of the
                                                installation procedure. [Johnson]

Labik/ Johnson/Dudek             ######      2   Check to see whether footprint of         Concur                     The foot print of existing stud        G Labik and T
                      External                   stud welder is larger than footprint of                              welders will be identified and if       Brown and M
  Saddle Loops for Template                      heating cooling tube clamps. If so,                                  necessary options will be              Viola and John
       Fabrication FDR                           stud welder footprint should be used                                 identified.                               Anderson
                                                 in layout to resolve interference with
                                                 flux loops. [Stratton]

Labik/ Johnson/Dudek             ######      3   Need to accelerate the learning           Concur [By procedue        The Romer Arm will now be the          S Raftopoulos
                      External                   process on the laser tracker to make      review for coils           primary method to locate the
  Saddle Loops for Template                      sure we can meet needed metrology         installation.              templates and the secondary
       Fabrication FDR                           needs for coil. [Dudek]                                              method is the Laser Tracker which
                                                                                                                      holds the promise of being much
                                                                                                                      faster
Labik/ Johnson/Dudek             ######      4   Yet two prices on template 1) as is-      Concur                     The RFQ will define a simple set of       G Labik
                      External                   perimeter only 2) include notches                                    indents for the corners which will
  Saddle Loops for Template                      generically definer i.e. 1/2" from                                   address the majority of indents.
       Fabrication FDR                           corner 3/4" deep 2" long. [Viola]                                    PPPL can add more indents during
                                                                                                                      assembly if necessary.

Labik/Johnson/Dudek              ######      1    The installation of the saddle loops     Concur                     Agreed. See chit 3. The personnel     G Labik and
                                                 involves a metrology procedure using                                 will be identified and details will                 S
  External Saddle Loops for                      an "ideal surface" as a basis. This                                  be identified.                        Raftopoulos and
   Template Fabrication FDR                      procedure and the associated                                                                                        M Viola
                                                 resources need to be identified and
                                                 presented at the review of the
                                                 installation procedure. [Johnson]




      Status Date: 12/23/2004                                                                                    37
                                                                                   NCSX Engineering CHIT Tracking Log


         Design Review                                                                     Review Board
      [Cog Engr/RLM/Chair]    Rvw Date   #         Chit Finding [Originator]             Recommendation                    Project Disposition            Responsibility              Status            Due Date
Labik/Johnson/Dudek           ######     2   Check to see whether footprint of         Concur                     The foot print of existing stud        G Labik and T
                                             stud welder is larger than footprint of                              welders will be identified and if       Brown and M
  External Saddle Loops for                  heating cooling tube clamps. If so,                                  necessary options will be              Viola and John
   Template Fabrication FDR                  stud welder footprint should be used                                 identified.                               Anderson
                                             in layout to resolve interference with
                                             flux loops. [Stratton]

Labik/Johnson/Dudek           ######     3   Need to accelerate the learning           Concur [By procedue        The Romer Arm will now be the           S Raftopoulos
                                             process on the laser tracker to make      review for coils           primary method to locate the
  External Saddle Loops for                  sure we can meet needed metrology         installation.]             templates and the secondary
   Template Fabrication FDR                  needs for coil. [Dudek]                                              method is the Laser Tracker which
                                                                                                                  holds the promise of being much
                                                                                                                  faster
Labik/Johnson/Dudek           ######     4   Yet two prices on template 1) as is-      Concur                     The RFQ will define a simple set of        G Labik
                                             perimeter only 2) include notches                                    indents for the corners which will
  External Saddle Loops for                  generically definer i.e. 1/2" from                                   address the majority of indents.
   Template Fabrication FDR                  corner 3/4" deep 2" long. [Viola]                                    PPPL can add more indents during
                                                                                                                  assembly if necessary.

  TF Coil Procurement FDR     2/3/2006   1   Make sure all drawings say                Concur                     Dimensions are in inches added to Kalish                 Complete
    Kalish/Nelson/Reiersen                   "dimensions are in inches" [Nelson]                                  drawings
  TF Coil Procurement FDR     2/3/2006   2   3 place decimal dimensions imply          Concur                     Closely toleranced dimensions on Kalish                  Complete
    Kalish/Nelson/Reiersen                   +/.005 in tolerance per sheet                                        Winding and Groundwrap
                                             tolerance. Is this necessary?                                        assembly drawings made
                                             Consider note (s) to clarify. [Nelson]                               reference dimensions. Notes
                                                                                                                  added to refer to Final assembly
                                                                                                                  drawing for tolerances
  TF Coil Procurement FDR     2/3/2006   3   Consider note that says dimensions        Concur                     Note Added to Final Assembly      Kalish                 Complete
    Kalish/Nelson/Reiersen                   are taken in " unrestrained condition"
                                              [ORNL]
  TF Coil Procurement FDR     2/3/2006   4   Some dimensions are in fractional         Concur                     Dimensions made consistent            Kalish             Complete
    Kalish/Nelson/Reiersen                   form, some in decimal form, see
                                             SE131-085. zone 3D-3H [Nelson]
  TF Coil Procurement FDR     2/3/2006   5   Try to identify standard for materials,   Concur                     Sil Fos calls out vendor and          Kalish             Complete
    Kalish/Nelson/Reiersen                   or if trade name is used, specify                                    generic specification. Severn
                                             vendor name and address (i.e., Sil-                                  gage will be provided to vendor
                                             Fos, Severn gage) [Nelson]                                           by PPPL
  TF Coil Procurement FDR     2/3/2006   6   There are two coil assembly types,        Concur                     Project investigating tradeoffs for   Wayne Reiersen     Pending
    Kalish/Nelson/Reiersen                   left hand and right hand. Is this                                    changing design to up down
                                             really necessary, and are the non-                                   verses all down TF Leads. Non
                                             symmetrical field errors acceptable?                                 Symmetrical Field Errors have
                                             [Nelson]                                                             been investigated and are
                                                                                                                  acceptable. The final answer is
                                                                                                                  required before the contract is
                                                                                                                  signed
  TF Coil Procurement FDR     2/3/2006   7   Resolve whether leads all go down or      Verify that spec is        Project investigating tradeoffs for   Kalish             Complete
    Kalish/Nelson/Reiersen                   whether stellarator symmetry is           consistent with any        changing design to up down                               (Drawing and
                                             preserved. If all go down then            drawing revisions.         verses all down TF Leads.                                specification update
                                             separate left-right assemblies weight                                Drawings are updated to clarify                          complete, for up down
                                             might need to be generated.                                          two orientations using a -01 and -                       lead study refer to chit 6
                                             [Reiersen]                                                           02 version for the TF assembly                           is left pending)

  TF Coil Procurement FDR     2/3/2006   8   Resolve whether "notch" on wedge          Concur                     Notch on wedge piece has been         Kalish             Complete
    Kalish/Nelson/Reiersen                   piece (solenoid side) is desirable.                                  removed
                                             [Reiersen]




      Status Date: 12/23/2004                                                                                38
                                                                                   NCSX Engineering CHIT Tracking Log


        Design Review                                                                       Review Board
    [Cog Engr/RLM/Chair]      Rvw Date    #         Chit Finding [Originator]             Recommendation                    Project Disposition        Responsibility              Status   Due Date
 TF Coil Procurement FDR      2/3/2006    9  Verify that adequate clearance exist       Concur                     Assembly studies continue, A      Tom Brown          Pending
   Kalish/Nelson/Reiersen                    for final assembly before awarding                                    definitive answer is required
                                             contract. [Reiersen]                                                  before the contract is signed
 TF Coil Procurement FDR      2/3/2006    10 TF Coil assembly spec 131-01-00 the        Minimal resistance, min    Specification reviewed and ranges Kalish             Complete
   Kalish/Nelson/Reiersen                    requirements in section 3.2 should         Rockwell hardness were     added where missing for hardness
                                             provide tolerance ranges where             cited in discussions.      and resistance and any other
                                             applicable i. e. 3.2. 1.2.2.3, standoff                               similar requirement that did not
                                             voltages 3.2.1.2.4. Electrical                                        as of yet have a range defined
                                             isolation, flow characteristics etc.
                                             [Strykowsky]
 TF Coil Procurement FDR      2/3/2006    11 TF coil assembly spec 131-01-00            Concur                     Verification sections added for    Kalish            Complete
   Kalish/Nelson/Reiersen                    there should be a one-to-one                                          each of these component
                                             cooperation between inch                                              characteristics. Formatting
                                             requirements (Section 3.2) and the                                    rearranged so that sections
                                             QA verifications (Section 4.2) i.e.                                   correlate one to one
                                             How do you verify turn to turn
                                             insulation, ground insulation, lead
                                             spur insulation, lead block insulation,
                                             co-wound loop diagram etc......
                                             [Strykowsky]
 TF Coil Procurement FDR      2/3/2006    12 In TF coil spec (NCSX-131-01-00) i.e.      Concur                     Specification has been corrected   Kalish            Complete
   Kalish/Nelson/Reiersen                    refer to location of co-wound loop
                                             show on drawing SE 131-005 sheet
                                             2, in section 3.2.2.18, part,. In port
                                             refer to SE-131-005, sheet 2 showing
                                             loop termination. [Stratton]

 TF Coil Procurement FDR      2/3/2006    13 On drawing SE-131-003, change the      Concur                         Material has been changed on       Kalish            Complete
   Kalish/Nelson/Reiersen                    material for the void shim from all to                                drawing call out
                                             all CR. [Raftopoulos]
SXR VV Space Modifications    2/14/2006   1 Note 1 on Drawing SE340-001 (per        Concur
   Brown/Nelson/Dudek                        welding) should be modified for
                                             welding to be performed by
                                             subcontractor, i.e., reference to Eng-
                                             037 should be replaced with
                                             appropriate 'weld' language per other
                                             NCSX contracts. [I. Zatz]
SXR VV Space Modifications    2/14/2006   2 No indication is made that the          Concur
   Brown/Nelson/Dudek                        weldment is INCo 625. I f this is
                                             indicated on dwg Se121-014, then it
                                             should be specified on dwg SE340-
                                             001 where it currently say "See dwg"
                                             for part 2.       [I. Zatz]

SXR VV Space Modifications    2/14/2006   3   Dwg. SE340-002 quantity on parts          Concur
   Brown/Nelson/Dudek                         list should be (1) not (3) and title of
                                              dwg SE121-014 should "VV Space.
                                              [L. Dudek]
 SXR VV Space Modifications   2/14/2006   4   Need to file NEPA form. [L. Dudek]        Concur
    Brown/Nelson/Dudek
Clamp Design FDR              3/23/2006   1   Consider using a special tool to       Concur
  Goranson/Nelson/Reiersen                    imprint the grafoil w/o having to push
                                              through the tubes. [Nelson]




     Status Date: 12/23/2004                                                                                  39
                                                                                 NCSX Engineering CHIT Tracking Log


       Design Review                                                                       Review Board
    [Cog Engr/RLM/Chair]      Rvw Date   #         Chit Finding [Originator]             Recommendation                 Project Disposition   Responsibility   Status   Due Date
Clamp Design FDR             3/23/2006   2   I am concerned about spot welding         Concur (use alternative
  Goranson/Nelson/Reiersen                   emery clothing the Be-Cu saddles          material, e.g.. Cu Cr Z2)
                                             regarding vapor and dust production.
                                              PPPL has no worked protection
                                             program for beryllium, since we don't
                                             machine/weld beryllium onsite. An
                                             alternative that would not generate
                                             beryllium fumes is needed, or this
                                             work should not be done offsite.
                                             [Levine]
Clamp Design FDR             3/23/2006   3   Need to add magnetic permeability         Concur
  Goranson/Nelson/Reiersen                   req. to 316 SS drawings. [Dudek]
Clamp Design FDR             3/23/2006   4   Consider using a single fastener to       Concur
  Goranson/Nelson/Reiersen                   attach the retainer clip to the saddles
                                             to improve assembles and flexibility.
                                             [Nelson]
Clamp Design FDR             3/23/2006   5   Allow alternative means (subject to       Concur
  Goranson/Nelson/Reiersen                   project approval) for fastening
                                             retaining clip to saddles. [Reiersen]
Clamp Design FDR             3/23/2006   6   Drawing for SS parts need magnetic        Concur
  Goranson/Nelson/Reiersen                   permeability restrictions (see chit 3)
                                             SE-128-058 change screw material to
                                             silicon-bronze. [Malinowski]

Clamp Design FDR             3/23/2006   7   The sample retainer is not wide           Concur
  Goranson/Nelson/Reiersen                   enough to go over the stud base.
                                             Hole in retainer must be 0.50"
                                             [Dudek]
Clamp Design FDR             3/23/2006   8   Need to address potential inferences      Concur
  Goranson/Nelson/Reiersen                   between flux loops and clamps.
                                             [Reiersen]
VV Coolant Hose & Thermal-   4/4/2006    1   Update -049 drawing if necesay for        Conur
  Hydraulic FDR                              the correct number of studs [Cole]
 Goranson/Nelson/Reiersen
VV Coolant Hose & Thermal-   4/4/2006    2   Consider qualifying the design on         Concur
  Hydraulic FDR                              Station 1. Leak checking should be
 Goranson/Nelson/Reiersen                    mandatory. [Cole]
VV Coolant Hose & Thermal-   4/4/2006    3   Requirements for house air need to        Concur
  Hydraulic FDR                              be specified e.g. filtered, clean oil -
 Goranson/Nelson/Reiersen                    free, perhaps dry. [Cole]
VV Coolant Hose & Thermal-   4/4/2006    4   Check that PPPL house air capabilities    Concur
  Hydraulic FDR                              match tubing pressure, pressure
 Goranson/Nelson/Reiersen                    drop, and flow parameters determine
                                             allowable dew point for house air.
                                             [Kalish]
VV Coolant Hose & Thermal-   4/4/2006    5   Where possible weld tubing splices to     Investigate experience
  Hydraulic FDR                              reduce probability of leaks especially    at ORNL and PPPL re
 Goranson/Nelson/Reiersen                    in inaccessible areas. [Kalish]           brazed versus welded
                                                                                       joint reliability (brazed
                                                                                       is much less labor
                                                                                       intensive). [Kalish]
VV Coolant Hose & Thermal-   4/4/2006    6   Add all pressure drops (straight tube     Concur
  Hydraulic FDR                              plus manifolds) to DAC. [Reiersen]
 Goranson/Nelson/Reiersen




     Status Date: 12/23/2004                                                                                       40
                                                                                      NCSX Engineering CHIT Tracking Log


       Design Review                                                                           Review Board
    [Cog Engr/RLM/Chair]         Rvw Date     #         Chit Finding [Originator]            Recommendation                   Project Disposition   Responsibility   Status   Due Date
VV Coolant Hose & Thermal-       4/4/2006     7   Close the loop with Carnevale on         Concur
  Hydraulic FDR                                   NCSX requirements for the new
 Goranson/Nelson/Reiersen                         (GPP) house air system. Address
                                                  moisture issue. [Reiersen]
VV Coolant Hose & Thermal-       4/4/2006     8   Need to assign responsibility for        Concur
  Hydraulic FDR                                   monitoring cryostat for leaks.
 Goranson/Nelson/Reiersen                         [Reiersen]
VV Coolant Hose & Thermal-       4/4/2006 9       Check what the maximum distance          Concur
  Hydraulic FDR                                   between hoses and between studs
 Goranson/Nelson/Reiersen                         (8" x 6" were the waist dimensions
                                                  analyzed). [Reiersen]
VV Coolant Hose & Thermal-       4/4/2006 10      During assembly it will be important     Concur [Address in
  Hydraulic FDR                                   to minimize the # of times the           assembly procedure]
 Goranson/Nelson/Reiersen                         compression fittings are connected &
                                                  disconnected. [Kalish]
 Modular Coil Electrical Joint   4/24/2006    1   Basic performance of nominal joint       Concur
       Peer Review                                needs to be understood. What is
Williamson/Nelson/Neuymeyer                       current density distribution at joint,
                                                  considering unbalance between
                                                  parallel windings? What is max. local
                                                  temperature rise? What is expected
                                                  resistance? What is impact of
                                                  thermal and mechanical effects?
                                                  [Neumeyer]
 Modular Coil Electrical Joint   4/24/2006    2   Need more precision in R                 Concur
       Peer Review                                measurements. [Neumeyer]
Williamson/Nelson/Neuymeyer
 Modular Coil Electrical Joint   4/24/2006    3   Consider making male part fluted         Concur                     Should be evaluated
       Peer Review                                (with ridges) to promote high
Williamson/Nelson/Neuymeyer                       pressure contact regions plus paths
                                                  for solder flow. [Neumeyer]
 Modular Coil Electrical Joint   4/24/2006    4   Consider sanding longitudinal strips     Concur                     See chit #3
       Peer Review                                on pins to ensure solder flow.
Williamson/Nelson/Neuymeyer                       [Heitzenroeder]
 Modular Coil Electrical Joint   4/24/2006    5   Use non-corrosive flux. [Neumeyer]       Concur
       Peer Review
Williamson/Nelson/Neuymeyer
 Modular Coil Electrical Joint   4/24/2006    6   Consider > 10ft. - lbs. torque and       Concur
       Peer Review                                alternate Belleville washers (flatten
Williamson/Nelson/Neuymeyer                       at initial load) [Neumeyer]
 Modular Coil Electrical Joint   4/24/2006    7   Determine temperature of epoxy to        Concur
       Peer Review                                avoid burning. [Neumeyer]
Williamson/Nelson/Neuymeyer
 Modular Coil Electrical Joint   4/24/2006    8 Consider inserting screw into side of      Concur
       Peer Review                              C-1 connects to ensure good joints.
Williamson/Nelson/Neuymeyer                     [Neumeyer]
 Modular Coil Electrical Joint   4/24/2006   9 Consider a pre-heating/cooling cycle        Concur
       Peer Review                              on C-1 joints with N2 blast to clean
Williamson/Nelson/Neuymeyer                     any epoxy which may be in joints.
                                                [Heitzenroeder]
 Modular Coil Electrical Joint   4/24/2006   10 Compare "cool-heat" to Cu clamps in        Concur
       Peer Review                              effectiveness to limit T of Cu before
Williamson/Nelson/Neuymeyer                     deciding on procedure details.
                                                [Heitzenroeder]




     Status Date: 12/23/2004                                                                                     41
                                                                                      NCSX Engineering CHIT Tracking Log


          Design Review                                                                         Review Board
       [Cog Engr/RLM/Chair]        Rvw Date   #       Chit Finding [Originator]               Recommendation                    Project Disposition          Responsibility   Status   Due Date
  Modular Coil Electrical Joint   4/24/2006   11 Pedigree of selected solder needs to       Concur
         Peer Review                             be confirmed for impact toughness
 Williamson/Nelson/Neuymeyer                     and conductivity. [Gettelfinger]

  Modular Coil Electrical Joint   4/24/2006   12 Formalize P. Heitzenroeder "sanding"       Concur                      See chit #3
        Peer Review                              approach by putting feed lines on
 Williamson/Nelson/Neuymeyer                     mating elements [Gettelfinger]

  Modular Coil Electrical Joint   4/24/2006   13 How will project assure that the           Concur                      Need to reconsider allowable joint
        Peer Review                              electrical interfaces on C-1 are clean                                 resistance. Then, if C-1 passes
 Williamson/Nelson/Neuymeyer                     enough to even consider soldering?                                     resistance test, it is acceptable
                                                 [Gettelfinger]
  Modular Coil Electrical Joint   4/24/2006   14 Remove (destructively) the leads and       Disagree                    It is a premature conclusion that
        Peer Review                              jumpers from the C-1 coil. Design a                                    C-1 cannot be recovered.
 Williamson/Nelson/Neuymeyer                     clamp-then-solder repair for C-1.                                      However, special attention needs
                                                 [Gettelfinger]                                                         to be paid to this coil during
                                                                                                                        subsequent processing and test.

  Modular Coil Electrical Joint 4/24/2006     15 Investigate drawing dimensional            Concur
        Peer Review                              error and assess impact. [Neumeyer]
 Williamson/Nelson/Neuymeyer
VV Heater Tape & Theromcouple 4/27/2006       1   What is the specification for the         Goranson to provide
 FDR Goranson/Nelson/Dudek                        supply. [Viola]                           heater tape power
                                                                                            requirements
VV Heater Tape & Theromcouple 4/27/2006       2   Evaluate the potential impacts of         Concur
 FDR Goranson/Nelson/Dudek                        nuclear radiation on the heaters and
                                                  thermocouples. Radiation levels are
                                                  specified in the NCSX General
                                                  Rquirements document. [Levine]

VV Heater Tape & Theromcouple 4/27/2006       3   Temporary protection is needed for        Man only need
 FDR Goranson/Nelson/Dudek                        the heater tape on the long slender       protection during
                                                  ports where the MC opening was            assembly
                                                  planned to be used to align the port.
                                                  [Brown]
VV Heater Tape & Theromcouple 4/27/2006       4   Need to identify voltage standoff         Concur
 FDR Goranson/Nelson/Dudek                        requirements and speciification on
                                                  tapes and TC. [Dudek]
VV Heater Tape & Theromcouple 4/27/2006       5   Need a Design Review if TC leads at       1) subject of a future
 FDR Goranson/Nelson/Dudek                        cyrostat boundary (veritcal port) feed-   review 2) NCSX needs
                                                  thru. 2) Who is designing feed-thru       to clarifiy who is the
                                                  at Cryostat? [Labik]                      designer of the feed-thru

VV Heater Tape & Thermocouple 4/27/2006       6   See if MTBF (Mean Time between         Concur
 FDR Goranson/Nelson/Dudek                        Failure) data is available for heaters
                                                  and compare to requirements [Kalish]

VV Heater Tape & Thermocouple 4/27/2006       7   Need to work out method of handling       Concur
 FDR Goranson/Nelson/Dudek                        VV NB extensions with heater tapes
                                                  and insulation installed. [Dudek]

    External Saddle Loops         5/31/2006   6   Spacer loop design needs to be            Concur
      Installation FDR                            completed. Assembly procedure
    Labik/Johnson/Dudek                           needs to be developed.      [W.
                                                  Reiersen]




      Status Date: 12/23/2004                                                                                      42
                                                                                 NCSX Engineering CHIT Tracking Log


         Design Review                                                                  Review Board
     [Cog Engr/RLM/Chair]      Rvw Date   #         Chit Finding [Originator]         Recommendation                     Project Disposition       Responsibility              Status   Due Date
    External Saddle Loops     5/31/2006   7   4mm . 1574" 5/32" .15625" and 3/16 Concur
       Installation FDR                       = .1875" 1) use inches 2) 22% of
    Labik/Johnson/Dudek                       VVSA 1 is 7 3/16" re-think tolerance.
                                              [M. Viola]
    External Saddle Loops     5/31/2006   8   Consider measuring all 3 VVSA's to    Concur
      Installation FDR                        determine positions of symmetry
    Labik/Johnson/Dudek                       points that do not have any
                                              interferences. Discuss implications
                                              with physics. [M. Viola]
    External Saddle Loops     5/31/2006   9   Identify scheme/location of how the   Concur
      Installation FDR                        leads come through penetration as a
    Labik/Johnson/Dudek                       back up for color code. [M. Viola]

    External Saddle Loops     5/31/2006   10 Can the 4 covered conflats be            Concur
      Installation FDR                       sacrificed? If not, consider a hinge
    Labik/Johnson/Dudek                      arrangement per the sketch on the
                                             back. [M. Viola]
    External Saddle Loops     5/31/2006   11 The tolerances for the symmetry coils    Concur
      Installation FDR                       are beyond what is achievable in
    Labik/Johnson/Dudek                      practice with the tools available
                                             recommend relaxing tolerance to
                                             2mm. [L. Dudek]
    External Saddle Loops     5/31/2006   12 Use "yes" data from modular coil         Concur
      Installation FDR                       diagnostic loop as a test case for
    Labik/Johnson/Dudek                      processing the information. Verify
                                             that the format of the data is
                                             ultimately digestible and useful to
                                             physics. [S. Raftopoulos]
    External Saddle Loops     5/31/2006   13 Determine whether the junction box       Concur
      Installation FDR                       can be aluminum or should be
    Labik/Johnson/Dudek                      conductively plated stainless . [S.
                                             Raftopoulos]
    External Saddle Loops     5/31/2006   14 Define requirements such that the as-    Concur
      Installation FDR                       built VV does not require NCR's to be
    Labik/Johnson/Dudek                      written. Update divisional control
                                             plan if appropriate. Tolerances
                                             should be on drawings. [W. Reiersen]

    External Saddle Loops     5/31/2006 15 Develop a comprehensive list of            Concur
      Installation FDR                     specifications needed to support FPA.
    Labik/Johnson/Dudek                    Documenting requirements on VG's
                                           at the design review practice. [W.
                                           Reiersen]
VV Thermal Insulation FDR     5/31/2006 1 Path forward for "calculated approval       Need to address and        See 441.                         goranson          complete
      Goranson/Nelson/Dudek                is not a guarantee. Local processing       performable of ' Baked'
                                           would be an ES& H obstacles and            Product
                                           Cabot may leave the table.
                                                   [G. Gettelfinger]

VV Thermal Insulation FDR     5/31/2006   2   Is pour able Microtherm not a           Concur                     Mute point since nanogel meets   goranson          complete
      Goranson/Nelson/Dudek                   candidate? It is clearly a better 2nd                              requirements. See 441.
                                              choice than parcite.
                                                    [G. Gettelfinger]




      Status Date: 12/23/2004                                                                               43
                                                                                       NCSX Engineering CHIT Tracking Log


        Design Review                                                                          Review Board
     [Cog Engr/RLM/Chair]          Rvw Date   #          Chit Finding [Originator]           Recommendation                 Project Disposition          Responsibility              Status   Due Date
VV Thermal Insulation FDR         5/31/2006   3    Add a closable " fill nipple" to each   Concur                  Draw string permits access and      goranson           complete
      Goranson/Nelson/Dudek                        boot to allow incremental and                                   inspection.
                                                   localized, targeted filling.
                                                    [G. Gettelfinger]
VV Thermal Insulation FDR         5/31/2006   4    Which the naanore cleaning flows and Concur                     Cabot testing of material in June   goranson           complete
      Goranson/Nelson/Dudek                        backfills nicely, is it compressible in                         confirms heat treat solves
                                                   fixed container? How does one                                   problem.
                                                   quantify resulting VV loads?
                                                          [G. Gettelfinger]

VV Thermal Insulation FDR         5/31/2006   5    To test for heat leakage to coils; a)  Concur                                                       Zarnstorff         under study         11/1/2006
      Goranson/Nelson/Dudek                        test coil resistance cold b) do a test
                                                   pulse eat a safe level and measure
                                                   the change in resistance. [M.
                                                   Zarnstorff]
VV Thermal Insulation FDR         5/31/2006   6    Need to address how to                 Concur                   covered by 449                      goranson           complete
      Goranson/Nelson/Dudek                        accommodate shimming of casting by
                                                   up to 1/2". The Hemseal will either
                                                   need to be made after casting ASM or
                                                   be adjustable.      [L. Dudek]

VV Thermal Insulation FDR         5/31/2006   7    Can a person really y get between        Concur                                                     Viola/Goranson     under study          1-Sep
      Goranson/Nelson/Dudek                        the TF and PF coils to access boots
                                                   for repairs at the bottom of the
                                                   machine. [M. Viola]
VV Thermal Insulation FDR         5/31/2006   8    Conduct "Ant Farm" visual test of        Concur                                                     Viola/Goranson     in work              1-Nov
      Goranson/Nelson/Dudek                        flow using 2 wood profile cuts VVSA
                                                   and Modular coil sandwiched between
                                                   Plexiglas (see back of chit). [M. Viola]

VV Thermal Insulation FDR         5/31/2006   9    Consider using 'bars' on Modular Coil     Concur                                                    goranson           under study           9-Jan
      Goranson/Nelson/Dudek                        only in the close clearance areas to
                                                   save cost. [L. Dudek]
VV Thermal Insulation FDR         5/31/2006   10   Consider using straight pins vs.          Concur                                                    goranson           under study          1-Aug
      Goranson/Nelson/Dudek                        threaded studs. May be cheaper
                                                   when considering total cost.
                                                   [L. Dudek]
VV Thermal Insulation FDR         5/31/2006   11   Make port cover insulators by carving     Concur                                                    goranson           under study          1-Nov
      Goranson/Nelson/Dudek                        them out of Solimide foam blocks,
                                                   cheaper, shapelier.            [M.
                                                   Zarnstorff]
VV Thermal Insulation FDR         5/31/2006   12   Casting shims are not continuous.         Concur                special "tadpole" seals in several   goranson          complete
      Goranson/Nelson/Dudek                        Need to address these holes by                                  sizes will be used if space too
                                                   caulking or adding nomet, etc. [L.                              wide. Parts will be ground to fit if
                                                   Dudek]                                                          oversize. Drawings completed.
VV Thermal Insulation FDR         5/31/2006   13   Is there enough space for jelly roll      Concur                Studies were conducted and it        goranson          complete
      Goranson/Nelson/Dudek                        insulation if the modular coil castings                         was confirmed that there will be
                                                   are at the minimal.                 [G.                         enough room for 1" insulation.
                                                   Gettelfinger]                                                   Jelly roll is in 1/4" increments and
                                                                                                                   can be trimmed. Thermal calcs
                                                                                                                   confirm this is enough.
C1 Coil Testing Peer Review       6/1/2006    1    Circulate copies of the plans and         Concur
                                                   procedures for review to RLM's and
Gettlelfinger/vonHalle/Reiersen                    EM. [W. Reiersen]




      Status Date: 12/23/2004                                                                                 44
                                                                                      NCSX Engineering CHIT Tracking Log


         Design Review                                                                         Review Board
     [Cog Engr/RLM/Chair]         Rvw Date    #         Chit Finding [Originator]            Recommendation                   Project Disposition           Responsibility            Status           Due Date
C1 Coil Testing Peer Review       6/1/2006    2   Check out eddy current issues with       Concur
                                                  displacement monitor. [W. Reiersen]
Gettlelfinger/vonHalle/Reiersen
C1 Coil Testing Peer Review       6/1/2006    3   ES& H inspection of final CTF            Concur
                                                  lock/interlock configuaration should
Gettlelfinger/vonHalle/Reiersen                   be made before testing penetration
                                                  begins in the enclosure. [J. Levine]
C1 Coil Testing Peer Review       6/1/2006    4   Add TC's to WP exterior for              Concur
                                                  monitoring cooldown. [W. Reiersen]
Gettlelfinger/vonHalle/Reiersen
Fiber Optic Strain Gages & Coil   8/18/2006   1   Define who is doing what in the          Concur                     Develop tasks, resources, and       Nelson             Complete.                 25-Aug
        Testing PeerRvw                           instrumentation area. [Nelson]                                      schedule.
  Williamson/Nelson/Reiersen
Fiber Optic Strain Gages & Coil   8/18/2006   2   Consider testing displacements           Concur                     Will investigate FISO disp gage     Tsai               Quote for disp gages,     15-Sep
        Testing PeerRvw                           gages, deflection measurements in a                                 during tests if dac is not cost                        instr in progress.
  Williamson/Nelson/Reiersen                      cryogenic environments. [Reiersen]                                  prohibitive. Making improvements
                                                                                                                      to deflect-o-meter.

Fiber Optic Strain Gages & Coil   8/18/2006   3   Consider embedding fiber Briggs          Concur                     Consult with MIT and develop plan Reiersen             Awaiting input.           15-Sep
        Testing PeerRvw                           Grating (FBG) strain sensors in the                                 for possible use.
  Williamson/Nelson/Reiersen                      winding pack to enable measuring
                                                  strain at numerous locations.
                                                  [Reiersen]
Fiber Optic Strain Gages & Coil   8/18/2006   4   Develop strain gage solution for the     Concur                     Will test adhesion of FISO gages    Freudenberg,       Procuring materials.      15-Sep
        Testing PeerRvw                           winding pack. Could be very                                         to G10 strips, kapton, etc.         Williamson
  Williamson/Nelson/Reiersen                      important for experimental
                                                  operations. [Reiersen]
Fiber Optic Strain Gages & Coil   8/18/2006   5   Expand thermocouple coverage for         Concur                     Will document T/C layout and        Williamson         Drawing in progress.      15-Sep
        Testing PeerRvw                           modular coil for the test. [Reiersen]                               labeling on Type-C top asm
  Williamson/Nelson/Reiersen                                                                                          drawing.
Fiber Optic Strain Gages & Coil   8/18/2006   6   Explore use of existing data             Concur                     Will develop requirements,          All                Evaluation in progress.
        Testing PeerRvw                           acquisition/signature cog. equipment                                evaluate.                                              Need input re quantity
  Williamson/Nelson/Reiersen                      for testing C5 [Reiersen]                                                                                                  from design.
Fiber Optic Strain Gages & Coil   8/18/2006   7   Review location of strain gages to       Use "as few as possible" Will review stress analysis,          Williamson         In progress.              15-Sep
        Testing PeerRvw                           provide most useful information                                   document gage layout on top asm
  Williamson/Nelson/Reiersen                      during experimental operations.                                   drawings.
Fiber Optic Strain Gages & Coil   8/18/2006   8   Consider using fiber optic               Concur                   Plan to use both sensors and T/Cs     Freudenberg,       Procuring materials.      15-Sep
        Testing PeerRvw                           temperature sensors to avoid ground                               during LN2 adhesion tests.            Williamson
  Williamson/Nelson/Reiersen                      fault problems. [Reiersen]
Fiber Optic Strain Gages & Coil   8/18/2006   9   Complete cost estimate w/data            Concur                     Will estimate based on quotes for   All                Preliminary estimates     1-Sep
        Testing PeerRvw                           acquisition and instrumentation                                     testing, C1 experience.                                complete.
  Williamson/Nelson/Reiersen                      element. Add to ETC update.
                                                  [Reiersen]
Fiber Optic Strain Gages & Coil   8/18/2006 10    Explore rental equipment for the test    Concur                     Will develop requirements,          All
        Testing PeerRvw                           (perhaps from SNS) [Ramakrishnan]                                   evaluate.
  Williamson/Nelson/Reiersen
Fiber Optic Strain Gages & Coil   8/18/2006 11    Perform [a few test shots] at room       Concur                     Will modify test plan to            All
        Testing PeerRvw                           temperature also and ascertain the                                  accommodate.
  Williamson/Nelson/Reiersen                      performance of diagnostics.
                                                  [Ramakrishnan]
Solenoid Assembly PDR/FDR         9/6/2006    1   Consider shimming under each             Concur
                                                  support leg for improved adjustability
   Dahlgren/Nelson/Reiersen                       [Nelson]
Solenoid Assembly PDR/FDR         9/6/2006    2   Make sure there is adequate              Concur
                                                  clearance at the attachments for
   Dahlgren/Nelson/Reiersen                       aligning the assembly. [Nelson]




      Status Date: 12/23/2004                                                                                    45
                                                                                   NCSX Engineering CHIT Tracking Log


         Design Review                                                                    Review Board
     [Cog Engr/RLM/Chair]     Rvw Date   #         Chit Finding [Originator]            Recommendation            Project Disposition   Responsibility   Status   Due Date
Solenoid Assembly PDR/FDR     9/6/2006   3   Verify coils in series and properly      Concur
                                             bussed. [Nelson]
   Dahlgren/Nelson/Reiersen
Solenoid Assembly PDR/FDR     9/6/2006   4   Spec for completed solenoid              Concur
                                             assembly needs to be generated.
   Dahlgren/Nelson/Reiersen                  [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006   5   Optimal orientation of leads to          Concur
                                             minimize field errors and electrical
  Dahlgren/Nelson/Reiersen                   connections within solenoid assembly
                                             needs to be determined. [Reiersen]

Solenoid Assembly PDR/FDR     9/6/2006   6   Electrical isolation requirements from   Concur
                                             the structure to which the solenoid
  Dahlgren/Nelson/Reiersen                   assembly is mounted needs to be
                                             determined. [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006   7   Assess impact of displacement of coil    Concur
                                             structures. (especially in toroidal
   Dahlgren/Nelson/Reiersen                  direction) [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006   8   Requirements for DT's during cool-       Concur
                                             down needs to be quantified.
  Dahlgren/Nelson/Reiersen                   Assume 50K is the requirement.
                                             Needs to have ample
                                             instrumentation. (TC's) [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006   9   Need to determine if there are           Concur
                                             requirements to operate this
  Dahlgren/Nelson/Reiersen                   assembly with the modular coils @
                                             2Tw/D-site supplies. [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006 10    Need to determine dimensional            Concur
                                             control requirements for assembling
   Dahlgren/Nelson/Reiersen                  the solenoid coils. [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006 11    Specify separate permeability            Concur
                                             requirements for bas material and
  Dahlgren/Nelson/Reiersen                   welds. Take steps to assure that
                                             these requirements can be met prior
                                             to procurement. Consider 316 as an
                                             option. [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006 12    Systematically review SRD to ensure      Concur
                                             that all relevant requirements have
  Dahlgren/Nelson/Reiersen                   been addressed. [Reiersen]

Solenoid Assembly PDR/FDR     9/6/2006 13    Cool-down requirements (96 hours)        Concur
                                             needs to be addressed in the
  Dahlgren/Nelson/Reiersen                   assembly design and interface with
                                             cryostat cooling system. [Reiersen]
Solenoid Assembly PDR/FDR     9/6/2006 14    Make provisions for grounding in         Concur
                                             different individual parts - each
  Dahlgren/Nelson/Reiersen                   segment has to be grounded.
                                             [Ramakrishnan]
Solenoid Assembly PDR/FDR     9/6/2006 15    Test voltage has to be 5 LV not 2 KV.    Concur
                                             [Ramakrishnan]
   Dahlgren/Nelson/Reiersen
Solenoid Assembly PDR/FDR     9/6/2006 16    Mechanical forces on the leads &         Concur (Connect coils in
                                             external power joint connections at      series and bring leads to
  Dahlgren/Nelson/Reiersen                   the pad are to be analyzed confirmed     where they are
                                             to be ok. [Ramakrishnan]                 accessible.)




      Status Date: 12/23/2004                                                                                46
                                                                                       NCSX Engineering CHIT Tracking Log


         Design Review                                                                         Review Board
     [Cog Engr/RLM/Chair]         Rvw Date  #           Chit Finding [Originator]            Recommendation                          Project Disposition                Responsibility   Status   Due Date
Solenoid Assembly PDR/FDR         9/6/2006 17     Structure material is spec as 304 L.     Concur
                                                  Experience has shown that 304 will
   Dahlgren/Nelson/Reiersen                       near the M < 1.02 X 50 % of the
                                                  time either rear M spec or select
                                                  alternate material. [Dudek]
Station 2 Tooling FDR             9/20/2006   1   Make sure re-aligning of metrology       Concur
       Brown/Nelson/Reiersen                      system is included in the procedure
                                                  each time there is a night shift. [Cole]
Station 2 Tooling FDR             9/20/2006   2   Please change the crane connection        Concur
       Brown/Nelson/Reiersen                      point to flush with the top surface.
                                                  [Viola]
Station 2 Tooling FDR             9/20/2006   3   Provide open ended slot instead of        Concur
       Brown/Nelson/Reiersen                      hard pin connection. [Viola]
Station 2 Tooling FDR             9/20/2006   4   Eliminate rear leg assembly. [Viola]      Concur [Consider]
       Brown/Nelson/Reiersen
Station 2 Tooling FDR             9/20/2006   5   If picture frame is needed to move        Concur [look to improve
       Brown/Nelson/Reiersen                      gussets to 2 bottom corners. [Viola]      to improve lateral
                                                                                            stability]
Station 2 Tooling FDR             9/20/2006   6   Dimensional characterization of           Concur
       Brown/Nelson/Reiersen                      finished modular coils should be
                                                  performed during post-VPI. This
                                                  includes but is not limited to clamp
                                                  profiles. [Reiersen]
Station 2 Tooling FDR             9/20/2006   7   Consider provisions for ensuring no    Concur
       Brown/Nelson/Reiersen                      lateral motion, e.g. outriggers to the
                                                  floor. This is critical for metrology.
                                                  [Reiersen]
Station 2 Tooling FDR             9/20/2006   8   Drawings should be reviewed by Viola Concur
       Brown/Nelson/Reiersen                      during their development not just at
                                                  an FDR. [Reiersen]
Station 2 Tooling FDR             9/20/2006   9   Update PMB to show pre-fitting of 3-      Concur
       Brown/Nelson/Reiersen                      packs into a 6-pack being done in
                                                  Station 3. [Reiersen]
Station 2 Tooling FDR             9/20/2006 10    Need to add tooling for handling 2-      Concur
       Brown/Nelson/Reiersen                      coil modules and 3-coil modules, e.g.
                                                  lifting attachments, reaming
                                                  equipment, chain falls. Make sure
                                                  budget is provided for this hardware.
                                                  [Reiersen]
  Field Period Assembly Peer      ######      1   Coil to coil shim plan will be costly to Concur - this is critical        The shim shape is under review. Two       Cole
Review              Cole-Viola-                   implement since they are large, but                                       concepts that are being pursued are
  Brown/Dudek-Nelson/Perry                        thin, parts that will be expensive to                                     smaller shims that have natural breaks
                                                  machine. They will most likely have                                       where ports break the continuity of the
                                                  to be ground. They also have the                                          flange. We are also considering single
                                                  disadvantage that if one part of the                                      shims at each hole location.
                                                  shim is too thick or thin after
                                                  fabrication the whole shim has to be
                                                  reworked or replaced. A change to
                                                  discrete horseshoe shims (which may
                                                  be off the shelf) will be much cheaper
                                                  and will likely provide a better overall
  Field Period Assembly Peer      ######      2   result. - L. Dudek bushing reaming Concur
                                                  Clearance check, for                                                      Inspection of components to determine Cole
Review              Cole-Viola-                   operations, needs to consider as-built                                    as built conditions is planned.
  Brown/Dudek-Nelson/Perry                        conditions. - F. Malinowski




      Status Date: 12/23/2004                                                                                          47
                                                                                      NCSX Engineering CHIT Tracking Log


         Design Review                                                                     Review Board
      [Cog Engr/RLM/Chair]        Rvw Date   #         Chit Finding [Originator]         Recommendation                          Project Disposition                Responsibility               Status                Due Date
  Field Period Assembly Peer      ######     3   The match drilling operation ("ream") Concur - this is critical        See response to Chit 11.                  Cole               Closed. Resolution of this chit
Review              Cole-Viola-                  is required on 450 holes total. This                                                                                                will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                       will add about 1-2 years to the                                                                                                     11.
                                                 project (at .5 to 1 day / hole). A
                                                 simpler method needs to be
                                                 developed using standardized parts to
                                                 reduce this to an acceptable method.
                                                 - L. Dudek

  Field Period Assembly Peer      ######     4   The epoxy-stud-shear plate (coil-coil)     Concur                      See response to Chit 10.                  Cole               Closed. Resolution of this chit
Review              Cole-Viola-                  is located on the center of the                                                                                                     will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                       machine and least serviceable. A                                                                                                    10.
                                                 suitable design factor should be
                                                 applied. - M. Viola
  Field Period Assembly Peer      ######     5   It appears that some measurements,         Concur                      We acknowledge the uncertainty in our Brooks                 Closed. No further action
Review              Cole-Viola-                  such as coil to coil, will be taken with                               measurements is a significant fraction                       required.
  Brown/Dudek-Nelson/Perry                       equipment that does not have the                                       of the tolerance we are trying to
                                                 10x “rule of thumb” accuracy needed.                                   enforce. This becomes a risk the
                                                  - F. Malinowski                                                       Project will have to accept since we
  Field Period Assembly Peer      ######     6   A statement of the in-situ accuracy of     Concur                      A plan will be developed and               Brooks            WIP                               15-Jan-07
Review              Cole-Viola-                  the metrology equipment planned or                                     implemented to address many of the
  Brown/Dudek-Nelson/Perry                       in use should be made based on field                                   metrology concerns including: accuracy
                                                 testing under actual conditions. Since                                 of indivdual measurements using the
                                                 there is only a single laser tracker                                   Leica and Romer Arm; alignment errors
                                                 (Leica)and not all mesurement points                                   based on number of alignment points;
                                                 of interest can be seen from a single                                  error accumulation with "leapfrogging"
                                                 position, multiple setups and                                          measurements and/or transfer of
                                                 realignments will be required,                                         monuments; visibility of monuments
                                                 affecting accuracy. Test                                               during assembly; and stability of parts
                                                 measurements could be made, for                                        being measured (temperature, gravity,
                                                 example, of a number of test points                                    etc). Test articles will be
                                                 on a Modular Coil which could be                                       representative of the production articles
                                                 visible from several vantage points of                                 to the greatest practical extent. Line-of
                                                 the laser tracker (each necessarily                                    sight studies to assess the feasibility of
                                                 aligned to a subset of all fiducials) to                               fixed locations for metrology equipment
                                                 gain some statistical data with which                                  will also be addressed.
  Field Period Assembly Peer      ######     7   Vessel - are the fiducials accessible      Concur                      A monument visibility study needs to                         Closed. Resolution of this chit
Review              Cole-Viola-                  to both the Romer and the                                              be done within CAD to determine                              will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                       Leica after the coils are assembled                                    placement locations of monuments for                         6.
                                                 around it, or are the reference                                        use after FPA.
                                                 points then transferred to the port
                                                 extrusions - which are welded on                                       See response to Chit 6.
                                                 later ?! It would seem that the vessel
                                                 fiducials become buried at coil
                                                 and period assembly time. - S.
                                                 Anderson
  Field Period Assembly Peer      ######     8   Vessel - How is the vessel                 Concur                      Prior to welding the VVSAs together,       Cole              Closed. No further action
Review              Cole-Viola-                  manipulated to be in the right place -                                 the vessel is manipulated with the                           required.
  Brown/Dudek-Nelson/Perry                       with just the vertical supports? And is                                upper vertical and lateral supports plus
                                                 the adjustment aimed to optimize                                       temporary radial supports. During FPA,
                                                 the coil to vessel clearance, or to                                    the vessel is positioned so that all ports
                                                 enable the vessel sectors to meet at                                   can be accurately positioned and
                                                 full assembly? What 'slop' in vessel                                   welded to the vessel. During final
                                                 location is allowable? - S. Anderson                                   assembly, the vessel will be moved
                                                                                                                        radially outward to ensure that the




      Status Date: 12/23/2004                                                                                      48
                                                                                  NCSX Engineering CHIT Tracking Log


         Design Review                                                                    Review Board
      [Cog Engr/RLM/Chair]        Rvw Date   #        Chit Finding [Originator]         Recommendation                    Project Disposition             Responsibility             Status            Due Date
  Field Period Assembly Peer      ######     9  Vessel - Can one use the same jig     Concur                  The benefit is offset by the risk of                         Closed. No further action
Review              Cole-Viola-                 that was used to leak test the                                distortion by welding on the port 4's                        required.
  Brown/Dudek-Nelson/Perry                      assembled vessel sector at the                                completely prior to joining the 3
                                                manufacturer before the sectors are                           machine field periods. The
                                                assembled into a torus? Easier to fix                         manufacturer welded the vessel spacer
                                                a problem at this point than when                             on one end of the completed VVSA with
                                                everything is closed and welded                               all its ports attached and then welded
                                                together. What did the manufacturer                           caps on both ends to perform a
                                                use                                                           complete all encompassing leak check.
                                                to check all the port welds of a
  Field Period Assembly Peer      ######     10 sector? - S. Anderson
                                                Coil assembly - The Epoxy filled shim Concur                  Testing of the shear carrying shim        Cole
Review              Cole-Viola-                 pieces with studs which take                                  concept is being conducted. Alternate
  Brown/Dudek-Nelson/Perry                      up the shear loads where bolting is                           fill operations are being explored.
                                                impractical need to be fully tested
                                                to ensure that the epoxy goes to all                          See also Chit 4.
                                                the right places, in EVERY case ?!
                                                How can one ensure this for a this
                                                feed through the G11? - S. Anderson

  Field Period Assembly Peer      ######     11 Sector assembly - the in-place          Concur                The goal for reaming holes is to design Cole
Review              Cole-Viola-                 reaming of all the G11 bushing seems                          fixtureing that will minimize the time to
  Brown/Dudek-Nelson/Perry                      very tedious, and there may be                                match drill and ream holes to 1-2 hrs
                                                places where this is not accessible for                       ea. Options are being explored that
                                                such an operation. An eccentric cam                           may reduce the no. of holes that have
                                                with a clearance hole in each sector                          to be reamed. Spherical seats are
                                                might allow alignment in x-y without                          planned to account for out of square
                                                needing any drilling, but does not                            conditions.
                                                permit matching in the out-of-plane
                                                or angular mismatch direction.                                See also Chit 3.
                                                Match-drilling does allow out-of-plane
                                                alignment, except that the head
                                                or flat also needs to be machined on
                                                both side for the correct
                                                orientation of the 'land' of the bolt
                                                head and nut area. Not sure which
                                                is best, or how large the sector-to-
                                                sector mismatch might be ? - S.
                                                Anderson
  Field Period Assembly Peer      ######     12 Sector Assembly - The pieces            Concur                Smaller shim packs are being            Cole
Review              Cole-Viola-                 bridging and shimming the sectors in                          considered. Sizing the shim will be
  Brown/Dudek-Nelson/Perry                      non-bolt-accessible regions are of                            based on the data obtained during
                                                extremely high tolerance and all will                         inspection. Procuring shims in defined
                                                be different. It would seem that                              size ranges is also an option. Testing
                                                smaller shims, built up from standard                         will be conducted to assemble two coils
                                                thickness stock, would allow better                           to verify concepts.
                                                fit, let machining precision and
                                                more flexibility. - S. Anderson                               Shims made of multiple layers must be
                                                                                                              installed with care since each shim-to-
                                                                                                              shim interface can introduce additional
                                                                                                              error.




      Status Date: 12/23/2004                                                                            49
                                                                                    NCSX Engineering CHIT Tracking Log


         Design Review                                                                        Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #        Chit Finding [Originator]            Recommendation                         Project Disposition             Responsibility             Status            Due Date
  Field Period Assembly Peer      ######     13 TF coils - the interior wedge            Concur                         Agreed, the tolerances are critical. The                    Closed. No further action
Review              Cole-Viola-                 machining needs to be done with                                         fabrication plan addresses the coil                         required.
  Brown/Dudek-Nelson/Perry                      amazing tolerances, or the whole                                        wedge machining tolerances that are
                                                assembly grows or shrinks or just                                       required to achieve the final machine
                                                does                                                                    assy tolerances.
                                                not come together. Could this not be
                                                cast in place once the coils are
                                                made, using some sort of jig
                                                assembly to put the coil set into its
                                                final
                                                aligned location? Or use a central
                                                cylinder as an internal alignment and
  Field Period Assembly Peer      ######     14 Coil Alignment - the coil C4             Project should clarify.        The realignment is intended to reduce Brooks                Closed. No further action
Review              Cole-Viola-                 realignment seems to give a large z                                     the targeted resonant field errors, but                     required.
  Brown/Dudek-Nelson/Perry                      error (around 19 mil), larger than the                                  not necesarily the deviation of all points
                                                tolerance allowed. Yet originally                                       from their design location. Also,
                                                it was said that coil alignment                                         extreme points on the MCWF may
                                                reduced the errors to under the                                         move more than points at the current
                                                initially specified tolerance (20 mil                                   center. Calculations of the movement
                                                total). This is a bit confusing to me. -                                during realignment of the current
                                                 S. Anderson                                                            center was only 10 mil for this case.

  Field Period Assembly Peer      ######     15 Sector Alignment - 3 high-tolerance     Concur                          Concur. A less constrained and more   Brown                 WIP                         15-Dec-06
Review              Cole-Viola-                 balls trying to socket into 3                                           workable approach for alignment based
  Brown/Dudek-Nelson/Perry                      high-tolerance seats, with virtually no                                 on three points will be sought. Using
                                                allowance to machining tolerance                                        three point kinematic mounts (sphere,
                                                nor alignment tolerance seems a                                         V, flat) to align the MCHP assemblies
                                                difficult methodology for getting a                                     was successfully implemented on SNS.
                                                6000                                                                    Adjustments with screws is another
                                                pound piece to mate to a second                                         option being considered.
                                                6000 pound piece! At least a cone
                                                seat                                                                    See also Chits 28 and 48.
                                                with a ball has a better chance of
                                                initial alignment as its mating is a
                                                line not a complete surface. And then
                                                a vee and a plane to both complete
                                                the alignment and provide the final
                                                local coordinates is a less
                                                constrained configuration that will
                                                always go together, whereas 3 balls
                                                will probably not fit together. - S.
                                                Anderson




      Status Date: 12/23/2004                                                                                      50
                                                                                 NCSX Engineering CHIT Tracking Log


         Design Review                                                                  Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]        Recommendation                   Project Disposition           Responsibility         Status   Due Date
  Field Period Assembly Peer      ######     16 Machine tolerance and Assembly and Concur                    A set of monuments will be established Brooks             WIP            15-Jan-07
Review              Cole-Viola-                 Alignment - the trick with                                   in the NCSX Test Cell for Final
  Brown/Dudek-Nelson/Perry                      machine assembly is to get a reliable                        Assembly (and Stations 4 and 5). For
                                                and reproducible set up on a basic                           Stations 1 thru 3 which involve multiple
                                                coordinate system, and then align                            component sub-assemblies in the NCSX
                                                each part, and sub assembly to this                          Manufacturing Facility, the basic
                                                master coordinate system. In doing                           coordinate system will key off the first
                                                this, one needs to minimize the                              part of each sub-assembly (ie Type A
                                                leap-frogs or movements of the                               coil for HP).
                                                measurement system, which will
                                                accumulate
                                                some error each time, and to take
                                                great care to allow for and add up the
                                                accumulated errors, from positioning
                                                a coil in a winding form, from
                                                assembling a half-period and a
                                                period, from joining periods, etc. And
                                                ultimately one needs to have this
                                                coordinate system throughout the life
                                                of the device, as diagnostics need to
                                                be aligned to it to permit them to
                                                be correlated to the magnetic
                                                structure. So the fiducials need to be
                                                accessible at all times. - S. Anderson




  Field Period Assembly Peer      ######     17 As-assembled locations of the coils    Concur                Monument placements will be chosen          Brooks        WIP            15-Jan-07
Review              Cole-Viola-                 will need to be measured so we can                           to assure this is possible. Properly
  Brown/Dudek-Nelson/Perry                      tell Physics where the coils are in                          locating the coils is central to the
                                                space. - E. Perry                                            assembly process.
  Field Period Assembly Peer      ######     18 Test the cooling tube clamp            Concur                The planned approach is to use              Goranson      WIP            30-Dec-06
Review              Cole-Viola-                 configuration on a 3-D surface to                            variable thicknesses of Grafoil to fill any
  Brown/Dudek-Nelson/Perry                      assure that the conductivity from                            gaps between the copper pads and the
                                                stainless to copper to Inconel is                            vessel. Trial fits are now being
                                                acceptable. - E. Perry                                       performed on VVSA-1.
  Field Period Assembly Peer      ######     19 Who makes the shims between coils?     Concur                Shims will probably be made by an           Cole
Review              Cole-Viola-                 What is the schedule impact of doing                         outside vendor to an oversize condition.
  Brown/Dudek-Nelson/Perry                      this fabrication during assembly?                            The final thickness shall be based on
                                                Can’t we use discreet shim sizes and                         the data obtained during inspection.
                                                then pick out the best size from off                         Procuring shims in defined size range is
                                                the shelf during the assembly? - E.                          also an option. Having grinding
                                                Perry                                                        equipment installed near the assy area
                                                                                                             will facilitate quick turnaround of slight
                                                                                                             modifications to the shim pack.




      Status Date: 12/23/2004                                                                           51
                                                                                     NCSX Engineering CHIT Tracking Log


         Design Review                                                                        Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #        Chit Finding [Originator]            Recommendation                         Project Disposition            Responsibility              Status           Due Date
  Field Period Assembly Peer      ######     20 Silicone has been used for bladders       Concur                        Bladders supporting the wings are       Dudek              WIP                         15-Jan-07
Review              Cole-Viola-                 to be filled in-place as shims and                                      being developed. Shear loads as well as
  Brown/Dudek-Nelson/Perry                      should be considered here. Bladders                                     compression loads will be considered.
                                                must have an inlet and an outlet and                                    Testing will be performed on different
                                                all orientations must be test filled to                                 fill materials to verify load carrying
                                                assure that there are no trapped                                        capacity to assure bladders meet
                                                volumes. The volume of the material                                     design requirements. An inlet and
                                                injected should be monitorred so it is                                  outlet for each bladder is planned.
                                                known when the bladder is full. - E.                                    Testing will be performed to assure
                                                Perry                                                                   complete fill of the bladder.

                                                                                                                        Bladders made from thin stainless
                                                                                                                        sheet were developed for ITER during
                                                                                                                        the EDA at MIT, and this design
                                                                                                                        appears applicable to NCSX. Silicone
                                                                                                                        will be considered but may not be stiff
                                                                                                                        enough to prevent deflection and may
                                                                                                                        be problematic at LN2 temperature.

                                                                                                                        See also Chit 36.


  Field Period Assembly Peer      ######     21 Review all bolted joint designs, using Concur                           Tooling needed to torque the bolted         Williamson     WIP                         15-Dec-06
Review              Cole-Viola-                 as-built dimensions, to assure that                                     joints will be checked for fit as part of
  Brown/Dudek-Nelson/Perry                      the tooling needed to torque the                                        modular coil interface design.
                                                joints will fit. - E. Perry
  Field Period Assembly Peer      ######     22 Verify who has the fixtures and        Concur                           Bolt reaming fixtures are being             Cole
Review              Cole-Viola-                 equipment needed for the bolted joint                                   designed. Will be procured by PPPL.
  Brown/Dudek-Nelson/Perry                      reaming operations. - E. Perry                                          Mike Viola's group will use the reaming
                                                                                                                        fixtures to ream the bushings.

  Field Period Assembly Peer      ######     23 Evaluate whether eccentric bushings       Concur                        We are looking at Eccentric bushings to Cole
Review              Cole-Viola-                 should be used in place of the                                          see if they can be used to replace the
  Brown/Dudek-Nelson/Perry                      reaming of mating bolt holes. - E.                                      bolt reaming process. Concerns about
                                                Perry                                                                   out of plan conditions with eccentric
                                                                                                                        bushings.

                                                                                                                        In the current "eccentric-no-ream"
                                                                                                                        concept, the out of plane condition
                                                                                                                        must be accommodated by tilting the
                                                                                                                        bushing in the casting hole. The gap
                                                                                                                        between the bushing and hole is filled
                                                                                                                        with a suitable cryogenic epoxy such as
                                                                                                                        stycast 2850FT. The concern is the
                                                                                                                        width of the gap and the relatively low
                                                                                                                        stiffness of the epoxy fill.

  Field Period Assembly Peer      ######     24 How do you engage vacuum vessel           Concur - Project should There is sufficient space around boss to                         Closed. No further action
Review              Cole-Viola-                 vertical support threads when you         resolve these questions. observe initial assembly with a fiber                           required.
  Brown/Dudek-Nelson/Perry                      can’t see the initial installation?                                optic scope. Cross threading a 3/4 inch
                                                Cross threading is a very real                                     coarse thread is very unlikely and "feel"
                                                possibility.                                                       of the fit will be sufficiient to prevent a
                                                                                                                   bad start. The rod will be locked into
                                                 How is rod end held in position until                             the clevis.
                                                 the rod is threaded in? Would it
                                                 rotate in the clevis?                                                  See also Chit 46.




      Status Date: 12/23/2004                                                                                      52
                                                                                     NCSX Engineering CHIT Tracking Log


         Design Review                                                                   Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]         Recommendation                      Project Disposition                 Responsibility              Status                 Due Date
  Field Period Assembly Peer      ######     25 Are we going to put someone in the   Concur                       Each of our welders have surveyed          Viola
Review              Cole-Viola-                 vacuum vessel to weld the ports?                                  each weld to be performed and found
  Brown/Dudek-Nelson/Perry                      Have we proven that this can be done                              the access configuration acceptable.
                                                (technically and from a safety
                                                standpoint)? Do we have welders                                   Mockups of welding restrictions inside
                                                who fit in the vessel? Recommend                                  vacuum vessel to test accessability will
                                                mocking up welding restrictions                                   be considered. Actually putting people
                                                inside vacuum vessel to test                                      into the vessel through a port will be
                                                accessability. Recommend backing                                  done. It is recognized that a safety
  Field Period Assembly Peer      ######     26 What is the measurement system       Concur - Project must        See response to Chit 6.                                        Closed. Resolution of this chit
Review              Cole-Viola-                 accuracy?                            resolve these issues.                                                                       will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                                                                                                                                                       6.
                                                 Several reviewers feel that we are
                                                 working beyond the accuracy and
                                                 repeatability of the Leica measuring
                                                 system.

                                                 Experience is that if only one position
                                                 of the Leica system is required you
                                                 could get the 0.001” accuracy, but if
                                                 you must move the system to get
                                                 another line of sight, the accuracy
                                                 will be 0.005” at best.

                                                The spherical seats each have a
                                                tolerance and they have slop in their
                                                fastening … this will limit the
                                                positional accuracy of the units which
  Field Period Assembly Peer      ######        will be significant tolerances are
                                             27 We consider thesecompared to the         Concur                   See response to Chit 6.                                        Closed. Resolution of this chit
Review              Cole-Viola-                 quite tight; a lot of time and effort is                                                                                         will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      needed to achieve these tolerances;                                                                                              6.
                                                this should be considered by
                                                sufficient contingency in the planning;

                                                 -     practical accuracy limit of Leica
                                                 ~ 4/1000 in (experience in W7-X)

                                                 -     more than one Lieca standpoint
                                                 ~ 6/1000 in

                                                -      precision of the male/female
                                                spherical alignment system must not
                                                exceed 5/1000 in for A-B-C; hence
                                                the precision of a single male/female
                                                spherical alignment system must be
                                                much better - to be proven.
  Field Period Assembly Peer      ######     28 The possibility to remove the              Concur                 See response to Chit 15.                                       Closed. Resolution will be
Review              Cole-Viola-                 male/female spherical alignment                                                                                                  tracked as part of Chit 15.
  Brown/Dudek-Nelson/Perry                      systems appears to be questionable
                                                since these systems only generate
                                                the accuracy when putting two coils
                                                together. - L. Wegener




      Status Date: 12/23/2004                                                                                53
                                                                                     NCSX Engineering CHIT Tracking Log


         Design Review                                                                         Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]              Recommendation                     Project Disposition              Responsibility              Status                 Due Date
  Field Period Assembly Peer      ######     29 The influence of the electrical            Concur                    The impact of the electrical insulation   Cole               WIP                               15-Dec-06
Review              Cole-Viola-                 insulation onto the geometrical                                      regarding compresion under load is a
  Brown/Dudek-Nelson/Perry                      measurements should be considered.                                   factor. The plan is to account for the
                                                - L. Wegener                                                         deflection and perform testing to verify
                                                                                                                     the amount of deflection. This is one
                                                                                                                     of the reasons for keeping the electrical
                                                                                                                     insulation in the shims a uniform
                                                                                                                     thickness and varying the steel portion
                                                                                                                     of shims to meet geometric
                                                                                                                     requirements.
  Field Period Assembly Peer      ######     30 Practical accuracy limit of our            Project should note this. See response to Chit 6.                                      Closed. Resolution of this chit
Review              Cole-Viola-                 Faroarm ~ 6/1000 in (experience in                                                                                                will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      W7-X) - L. Wegener                                                                                                                6.

  Field Period Assembly Peer      ######     31 Tolerance build-up of Faroarm +            Project should note this. See response to Chit 6.                                      Closed. Resolution of this chit
Review              Cole-Viola-                 Leica not better than 10/1000. - L.                                                                                               will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      Wegener                                                                                                                           6.

  Field Period Assembly Peer      ######     32 Realignment of as-built coils requires     Project should note this. No, we recognize that we cannot wait      Brooks             Closed. No further action
Review              Cole-Viola-                 that the geometry of all coils must be                               for all coils to be wound before doing                       required.
  Brown/Dudek-Nelson/Perry                      known. Is that compatible with the                                   realignment calculations. We will
                                                present schedule?                                                    investigate alternative approaches that
                                                                                                                     allow realignment based on a reduced
                                                 (At W7-X we plan to wait with the                                   set of coils consistant with the
                                                 realignment of single periods until all                             schedule. In principle as shown we can
                                                 5 periods have been pre-assembled)                                  realign each coil separately based on
                                                  - L. Wegener                                                       it's own current center but it is
                                                                                                                     desireable to include as many coils as
                                                                                                                     possible to minimize required motion
                                                                                                                     and maximize the number of modes
                                                                                                                     targeted.
  Field Period Assembly Peer      ######     33 MC HP Assembly – R&D Activity:             Concur                    See response to Chit 6.                                      Closed. Resolution of this chit
Review              Cole-Viola-                 Distances between location points                                                                                                 will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      should be the same as the real coil. -                                                                                            6.
                                                 L. Wegener
  Field Period Assembly Peer      ######     34 Is the VV stiffness compatible with    Concur                           See response to Chit 6.                                   Closed. Resolution of this chit
Review              Cole-Viola-                 the assembly of 70 magnetic loops?                                                                                                will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                                                                                                                                                        6.
                                                 Are 10 accurate fiducial datum points
                                                 sufficient? We recommend to
                                                 implement additional inner fiducial
                                                 datum points for later in-vessel
                                                 installations.
                                                   - L. Wegener




      Status Date: 12/23/2004                                                                                      54
                                                                                      NCSX Engineering CHIT Tracking Log


         Design Review                                                                        Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]             Recommendation                   Project Disposition               Responsibility              Status             Due Date
  Field Period Assembly Peer      ######     35 Port installation:                        Concur                  Major Tool did not experience shell       Viola
Review              Cole-Viola-                                                                                   distortion while welding the ports on
  Brown/Dudek-Nelson/Perry                              -       Are you sure that small                           and our collar design will further lessen
                                                 ports will not cause distortion during                           the risk. Backing gas will be
                                                 welding?                                                         considered Mockups of welding
                                                                                                                  restrictions will be considered.
                                                 -     We recommend to use backing                                Threading of the VV supports is a
                                                 gas to shield at least the root.                                 recognized concern (ref. Chits 24 and
                                                                                                                  46). Ports will be aligned using a laser
                                                 -     We support the proposal to do                              and will be supported during the
                                                 mock-ups of port welds with the                                  installation off the penetration in the
                                                 correct orientation, i.e. overhead,                              modular coil shell.
                                                 and the space constraints.

                                                 -     Care during the installation of
                                                 upper and lower vertical supports to
                                                 avoid damage the threads.

  Field Period Assembly Peer      ######     36 Bladders                                  Concur                  See response to Chit 20.                                      Closed. Resolution will be
Review              Cole-Viola-                                                                                                                                                 tracked as part of Chit 20.
  Brown/Dudek-Nelson/Perry                       IPP will send their procedure for the
                                                 silicon casting procedure and pictures
                                                 showing concerns regarding the
                                                 proper filling.

                                                 -      Possible shear loads during
                                                 operation (rotation, tilting) in
                                                 addition to compression should be
                                                 investigated.

                                                -     Proper filling material should
                                                be qualified.
  Field Period Assembly Peer      ######     37 Shims between coils                       Concur                  Measurement data from inspection will Cole
Review              Cole-Viola-                                                                                   be used to size the shims. Data will be
  Brown/Dudek-Nelson/Perry                       -      What is the expected accuracy                             checked at assy to verify size.
                                                 of the machined shims (Measurement                               Machining/grinding may be done at the
                                                 of gap – 3D-machining –                                          assy location to speed turnaround if
                                                 measurement of shims).                                           modifications are required. Alternative
                                                                                                                  designs are being considered and will
                                                -      Shear keys on the inside coil                              be reviewed as mentioned below.
                                                flange: The procedure and the
                                                materials need to be qualified in
                                                detail (mock-up).
  Field Period Assembly Peer      ######     38 Loose fill of nanogel                     Concur                  Methods and appropriate inspection will Goranson              WIP                           30-Sep-06
Review              Cole-Viola-                                                                                   be incorporated into assembly
  Brown/Dudek-Nelson/Perry                       -     Care should be taken to ensure                             procedure. Hands on experimenting
                                                 no voids                                                         with production assemblies will be
                                                                                                                  needed to qualify the procedures.
                                                 -     Inspection measures

                                                 -      Appropriate filling methods
                                                 (compressed air method to be
                                                 qualified)
                                                    - L. Wegener




      Status Date: 12/23/2004                                                                                55
                                                                                    NCSX Engineering CHIT Tracking Log


         Design Review                                                                       Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #      Chit Finding [Originator]             Recommendation                   Project Disposition            Responsibility              Status                 Due Date
  Field Period Assembly Peer      ######     39 Stage 2                                  Concur                  Stability requirements derived from     Brown              WIP                               15-Dec-06
Review              Cole-Viola-                                                                                  measurement accuracy requirements       Brooks
  Brown/Dudek-Nelson/Perry                       -     The stability of the adjustable                           are recognized and will be addressed in
                                                 support stand must be compatible to                             tooling design. Temperature control
                                                 the accuracy requirements                                       requirements for the NCSX Mfg Faciltiy
                                                 (few/1000; see above).                                          and the NCSX Test Cell need to be
                                                                                                                 developed and implemented. The
                                                 -     Temperature controlled                                    present plan is to fit the bladders in
                                                 environment                                                     pockets machined into the winding
                                                                                                                 form (ref. response to Chit 63).
                                                 -       Wing/pocket area: remaining
                                                 clearance after realignment (and
                                                 manufacturing tolerances) should be
                                                 monitored to be compatible with the
                                                 fitting of bladders.
                                                      - L. Wegener


  Field Period Assembly Peer      ######     40 Assure that the type and number of    Concur                     Accuracy assessments (ref. response to Viola               WIP                               15-Dec-06
Review              Cole-Viola-                 metrology rigs and qualified staffing                            Chit 6) and metrology utilization studies Raftopoulos
  Brown/Dudek-Nelson/Perry                      are understood well in advance. - G.                             (geared to determine the type and         Brooks
                                                Gettelfinger                                                     number of units required for NCSX
                                                                                                                 FPA) will be performed. Usability of
                                                                                                                 other types of metrology equipment,
                                                                                                                 e.g. theodolites, will be assessed. The
                                                                                                                 number of units and timing will
                                                                                                                 determine the number of qualified
                                                                                                                 operators needed. The ETC will be
                                                                                                                 updated to reflect any increase in the
                                                                                                                 number and type of units required and
                                                                                                                 in the number of qualified operators.

                                                                                                                 See also Chit 59.

  Field Period Assembly Peer      ######     41 Need to establish revised envelopes      Concur                  Analysis of minimum clearances will be   Brown             WIP                               15-Dec-06
Review              Cole-Viola-                 for the coil clamps, thermal                                     re-checked and documented.
  Brown/Dudek-Nelson/Perry                      insulation, and as-built (out-of-
                                                tolerance) VV including appropriate                              See also Chit 51.
                                                envelope for VV clamps. Need to
                                                reassess minimum clearances.
                                                Document results with assumptions
  Field Period Assembly Peer      ######        Consider coil-to-coil W. Reiersen
                                             42 clearly identified. - interferences      Concur                  Coolant tubes are recognized as        Brown               Closed. These actions are
Review              Cole-Viola-                 that might result from the coolant                               potential interferences. Coolant tubes                     already captured in project
  Brown/Dudek-Nelson/Perry                      tubes on the modular coils - W.                                  are now being routed along the surface                     plans. No further action
                                                Reiersen                                                         of the winding form. All coils will be                     required.
  Field Period Assembly Peer      ######     43 Consider leak checking the ports         Concur                  See response to Chit 58.                                   Closed. Resolution of this chit
Review              Cole-Viola-                 individually as they are attached. -                                                                                        will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      W. Reiersen                                                                                                                 58.

  Field Period Assembly Peer      ######     44 Consider providing a fixed location for Concur                   A fixed location is desirable providing a Brooks           WIP                               15-Dec-06
Review              Cole-Viola-                 the laser tracker at Station 3 and                               sufficient set of monuments can be
  Brown/Dudek-Nelson/Perry                      beyond.                                                          viewed to maintain accuracy. Additional
                                                 - W. Reiersen                                                   Leica's) may better facilitate this.




      Status Date: 12/23/2004                                                                               56
                                                                                   NCSX Engineering CHIT Tracking Log


         Design Review                                                                       Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #        Chit Finding [Originator]           Recommendation                     Project Disposition                   Responsibility              Status             Due Date
  Field Period Assembly Peer      ######     45 For stage 5 consider lifting the coil-   Concur                     We will consider this assembly                Brown
Review              Cole-Viola-                 VVSA through the TF coils. It would                                 approach.
  Brown/Dudek-Nelson/Perry                      likely be easier to use multiple
                                                chainfalls to trapeze the assembly
                                                into the TF coils. - M. Viola
  Field Period Assembly Peer      ######     46 The problem of the attaching the         Project should consider    The parts are complete and there is no                           Closed. No further action
Review              Cole-Viola-                 support rods to the threaded bosses                                 provision for incorporate any device.                            required.
  Brown/Dudek-Nelson/Perry                      on the vacuum vessel is similar to                                  This is a non problem since practice
                                                several situations at SNS. We found                                 fitting a 3/4 coarse thread indicates it is
                                                a commercial company Fastorq                                        a very smooth operation. The end has
                                                (http://www.fastorq.com/zipnut.htm)                                 a starting chamfer for easing in the
                                                that sells a unique product that                                    thread.
                                                overcomes the dreaded first thread
                                                engagement problem. We have
                                                incorporated their technology into
                                                some special spherical inserts and
                                                into some grapple lifting fixtures.
                                                This may not be applicable to the
                                                NCSX situation since the vessel parts
  Field Period Assembly Peer      ######     47 The tight tolerance on magnetic field    Project should consider    The project will consider how the             Brooks             WIP                           15-Dec-06
Review              Cole-Viola-                 errors obviously requires a tight                                   metrology expertise at SNS could best
  Brown/Dudek-Nelson/Perry                      integration between fabrication,                                    be applied to NCSX.
                                                assembly, and final installation using
                                                sophisticated metrology at all phases.
                                                 The approach presented seems
                                                reasonable. There is a survey and
                                                alignment group at ORNL/SNS that
                                                has been very successful at
                                                alignment of several hundred
                                                magnets (much simpler shapes). Joe
                                                Error (that really is his name) is the
                                                group leader. This expertise may be
                                                available at other national labs as
                                                well. NCSX might consider having
                                                such a person visit PPPL as a
                                                consultant for a few days to review
  Field Period Assembly Peer      ######        The possibility measurement plans
                                             48 the immediate of using three point       Project should consider    See response to Chit 15.                                         Closed. Resolution will be
Review              Cole-Viola-                 kinematic mounts (sphere, V, flat) to                                                                                                tracked as part of Chit 15.
  Brown/Dudek-Nelson/Perry                      align the MCHP assemblies was
                                                discussed. SNS uses this mounting
                                                arrangement to align parts that need
                                                to be replaced periodically (choppers)
                                                and to make certain that assemblies
                                                that are moved frequently always
                                                return to the same position (shutter
                                                inserts). Using this type mounting on
                                                the MCHP assemblies that are only
                                                assembled one time may be overkill.
  Field Period Assembly Peer      ######     49 The field reaming (similar to match      Concur                     Yes, this process will be prototyped to       Viola
Review              Cole-Viola-                 drilling) operation seems to be well                                determine improvements, training, and
  Brown/Dudek-Nelson/Perry                      designed. NSCX should consider                                      time required. These activities
                                                procuring several reaming jigs and                                  (including procurements) will be
                                                training several people to make this                                included in the revised ETC.
                                                operation proceed quickly after the
                                                two MC pieces are mated correctly. -
                                                  K. Chipley




      Status Date: 12/23/2004                                                                                  57
                                                                                     NCSX Engineering CHIT Tracking Log


         Design Review                                                                   Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]        Recommendation                           Project Disposition                Responsibility              Status                 Due Date
  Field Period Assembly Peer      ######     50 The stage 3 assembly will be tedious Concur                           We will dry run the MCHP installation     Brown
Review              Cole-Viola-                 but doing this with crane and rigging                                 without the VV in place.                  Viola
  Brown/Dudek-Nelson/Perry                      hardware is probably the correct                                                                                Strykowsky
                                                approach. I would encourage the
                                                team to continue to prototype this
                                                approach with the “mechanized screw
                                                with inline encoders” as soon as
                                                practical. - K. Chipley

  Field Period Assembly Peer      ######     51 Has the reduction in clearance        Project should evaluate         See response to Chit 41                                       Closed. Resolution of this chit
Review              Cole-Viola-                 between VV and MC during assembly                                                                                                   will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      due to as-built dimensions of VV and                                                                                                41.
                                                MC been evaluated? Does this
                                                include the new clamps? What is the
                                                minimum clearance when all of this is
                                                taken into account? 0.4”? - E. Perry

  Field Period Assembly Peer      ######     52 Who is designing and fabricating the       Project should evaluate    The details of the VV/MC standoffs will   Brown
Review              Cole-Viola-                 VV/MC standoffs for use during the                                    be designed as part of the tooling
  Brown/Dudek-Nelson/Perry                      assembly? How are they attached to                                    activity with review and implantation
                                                the vacuum vessel? - E. Perry                                         by the FPA group.

  Field Period Assembly Peer      ######     53 What precision handling equipment          Project should evaluate    The project currently has two hydrosets   Viola
Review              Cole-Viola-                 (hydroset, chain falls with                                           which need calibration but are not
  Brown/Dudek-Nelson/Perry                      mechanized screws, alignment lasers,                                  capable of the load required. Any
                                                etc) is required, does PPPL have                                      precision handling equipment will have
                                                these items and what is the current                                   to be specified and rented or
                                                status of this equipment? - E. Perry                                  purchased. A list of such equipment
  Field Period Assembly Peer      ######     54 Prototyping of Stage 4 alignment           Concur                     The schedule allows ample time to         Brown
Review              Cole-Viola-                 fixtures is critical, but make sure that                              assemble the first TF 3-pack as a         Viola
  Brown/Dudek-Nelson/Perry                      temporary items (shims, alignment                                     production prototype, making sure that    Strykowsky
                                                tooling, etc) can be removed and are                                  temporary items can be removed and
                                                not trapped. - E. Perry                                               making changes in te tooling and
  Field Period Assembly Peer      ######     55 Is there sufficient schedule for the       Project should evaluate    The project will review the schedule      Brown               WIP                               15-Dec-06
Review              Cole-Viola-                 prototyping and fabrication of the                                    and resources for the prototyping and     Viola
  Brown/Dudek-Nelson/Perry                      assembly tooling?                                                     fabrication of the assembly tooling and
                                                Stage 4 and 5 design has not yet                                      developing assembly procedures for
                                                gone through review and may be an                                     Stations 2-5.
                                                issue.
  Field Period Assembly Peer      ######          - we sure
                                             56 Are E. Perry that the practical        Project should evaluate        See response 80 and 83.
                                                                                                                      See also Chits to Chit 6.                                     Closed. Resolution of this chit
Review              Cole-Viola-                 accuracy of the Leica laser is 0.0005”                                                                                              will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      in the field? How do we prove this is                                                                                               6.
                                                true? - E. Perry
  Field Period Assembly Peer      ######     57 Trials need to be completed promptly Concur                           Ample time will be provided for trials so Brown
Review              Cole-Viola-                 so adjustments can be made without                                    changes can be implemented without        Viola
  Brown/Dudek-Nelson/Perry                      affecting overall schedule. - E. Perry                                affecting the overall schedule.           Strykowsky




      Status Date: 12/23/2004                                                                                    58
                                                                                    NCSX Engineering CHIT Tracking Log


         Design Review                                                                       Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]            Recommendation                        Project Disposition            Responsibility              Status                 Due Date
  Field Period Assembly Peer      ######     58 Leak-checking individual welds as        Concur                        Provisions have been made on the port Viola
Review              Cole-Viola-                 they are performed (especially when                                    covers to leak check. A temporary
  Brown/Dudek-Nelson/Perry                      the welds are difficult to access later)                               cover can installed to leak check each
                                                should be done to avoid significant                                    port. Individual welds should be
                                                schedule impacts at final assembly. -                                  performed in a sequence that provides
                                                 E. Perry                                                              the maximum amount of distance from
                                                                                                                       each weld so that a localized leak check
                                                                                                                       can be performed. All weld repair must
                                                                                                                       be performed from the inside of the
                                                                                                                       vessel.

                                                                                                                       See also Chit 43.

  Field Period Assembly Peer      ######     59 The Leica seems to be on the critical     Concur                       See response to Chit 40.                                  Closed. Resolution of this chit
Review              Cole-Viola-                 path for many tasks. Is there a                                                                                                  will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      schedule for the use of the Leica?                                                                                               40.
                                                Shouldn’t a second Leica be obtained
                                                (rented)? - E. Perry
  Field Period Assembly Peer      ######     60 The roll-up schedule for the FPA          Concur - Project must        The project will review staffing         Strykowsky       WIP                               15-Dec-06
Review              Cole-Viola-                 shows the need for 3 welders on           adjust schedules to          requirements for welders and reconcile
  Brown/Dudek-Nelson/Perry                      FP#1, 4 for #2, and 4 for #3, with        match available              the schedule with welder availability.
                                                overlaps of work on each field period     resources.
                                                resulting in a need for up to 8
                                                welders at a time. Who will provide
                                                these qualified/experienced welders?
                                                The Technical Shops can’t provide
                                                even half this number. - E. Perry
  Field Period Assembly Peer      ######     61 Marks or detents should be put in the     Concur                       Agreed, however this will NOT            Brooks           Closed. Resolution of this chit
Review              Cole-Viola-                 floor wherever the Leica Laser                                         guaranty the accuracy of the alignment                    will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      Tracker should be set up (especially                                   to the same position with the precision                   44.
                                                stations 2 through 5) so it can quickly                                required. This will only facilitate
                                                be set-up in the same position it was                                  moving the equipment to the same
                                                in before. - E. Perry                                                  "approximate position".
  Field Period Assembly Peer      ######     62 Understudies for the critical             Concur                       The project will consider whether        Dudek            WIP                               15-Dec-06
Review              Cole-Viola-                 technicians should be trained now. -                                   understudies for critical technicians
  Brown/Dudek-Nelson/Perry                      E. Perry                                                               should be trained now. While it is clear
                                                                                                                       that this would reduce risk, it is less
                                                                                                                       clear that this is the best use of our
                                                                                                                       limited resources for reducing risk.

  Field Period Assembly Peer      ######     63 FPA clearance between as-built            Concur                       The modular coil wings have a            Brown            Closed. No further action
Review              Cole-Viola-                 wing/pocket - does it fit to bladders                                  machined undercut region to install an                    required.
  Brown/Dudek-Nelson/Perry                      dimension? - L. Wegener                                                un-inflated bladder.

  Field Period Assembly Peer      ######     64 Minimum drive speed of crane and          Concur                       This guidance is useful. Our crane has                    Closed. No further action
Review              Cole-Viola-                 mechanized screw systems should ~                                      a micro speed adjustment which may                        required.
  Brown/Dudek-Nelson/Perry                      3cm/min (0.5°/min) according to our                                    be reduced as needed.
                                                experiences, soft ramp up or ramp
                                                down is also desirable - L. Wegener

  Field Period Assembly Peer      ######     65 Only one person manages the               Concur                       Agreed. The lead technician or Lift      Viola            Closed. No further action
Review              Cole-Viola-                 alignment team to avoid                                                manager will direct these activities.                     required.
  Brown/Dudek-Nelson/Perry                      misunderstandings - L. Wegener




      Status Date: 12/23/2004                                                                                     59
                                                                                  NCSX Engineering CHIT Tracking Log


         Design Review                                                                     Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #       Chit Finding [Originator]          Recommendation                   Project Disposition              Responsibility              Status           Due Date
  Field Period Assembly Peer      ######     66   We are not sure whether the          Concur                  In Stage 3 the final fit-up is between A- Brown              WIP                         15-Jan-07
Review              Cole-Viola-                 mushrooms operate as a location                                A flanges. The details have not been
  Brown/Dudek-Nelson/Perry                      system in vertical plane in station 3                          developed but we are considering pre-
                                                (C-C flange, page 44). The rail should                         aligning adjoining Type-A MC's and
                                                form the datum system. The final                               attaching an external locating tool to
                                                alignment (last few 1/1000 inch)                               bring them back into alignment after
                                                should be made by a mechanical                                 installed over the VV.
                                                system at the location of AirLoc
                                                Wedgemount - not by the crane. -                               The project will define the mechanism
  Field Period Assembly Peer      ######     67 All stages should be mocked up. - L. Concur                    The importance of prototyping critical     Viola             WIP                         15-Dec-06
Review              Cole-Viola-                 Wegener                                                        operations is recognized. Plans for
  Brown/Dudek-Nelson/Perry                                                                                     field period assembly will be reviewed
  Field Period Assembly Peer      ######     68 The assembly tooling for station 5      Concur                 and updated. Prototyping and mockup
                                                                                                               Approriate resources will be provided.     Brown
Review              Cole-Viola-                 requires a lot of resources for the                            The need for stiffness in the assembly
  Brown/Dudek-Nelson/Perry                      detailed design, manufacturing                                 tooling is recognized.
                                                drawing, tests, commissioning. It has
                                                to be a stiff construction. - L.
                                                Wegener
  Field Period Assembly Peer      ######     69 The core team (3 technicians) need      Concur                 our plan is to augment the FPA teams       Viola
Review              Cole-Viola-                 to be capacity increased in time - L.                          with coil winding personnel as nneded.
  Brown/Dudek-Nelson/Perry                      Wegener                                                        The estimation to complete is being
                                                                                                               updated to include evolving concepts
                                                                                                               and schedule estimates.
  Field Period Assembly Peer      ######     70 Learning curve appears to be very   Concur                     The first article is really a production   Viola             Closed. No further action
Review              Cole-Viola-                 optimistic; too less repetitions to                            prototype. Assembly problems will be                         required.
  Brown/Dudek-Nelson/Perry                      maximize time saving; - L. Wegener                             encountered and resolved on the first
                                                                                                               article. Assembly procedures will have
                                                                                                               their first trial on the first article and
                                                                                                               are expected to be significantly revised
                                                                                                               in process. The first article will be
                                                                                                               done with a small crew with excellent
                                                                                                               problem solving skills in order to
                                                                                                               resolve the problems and optimize the
                                                                                                               assembly procedure while minimizing
                                                                                                               the resources used. Work on the first
                                                                                                               articles will be started ASAP in order to
                                                                                                               minimize the potential for impacting
                                                                                                               the critical path. Subsequent articles
                                                                                                               will be assembled by production
                                                                                                               oriented crews using these optimized
                                                                                                               procedures. The time for the first
                                                                                                               articles was set much higher to allow
                                                                                                               time for these one-time activities. The
                                                                                                               times for subsequent articles are more
                                                                                                               in line with our expectations for what is
                                                                                                               achievable once a proven assembly
                                                                                                               procedure is available and are not
                                                                                                               based on aggressive learning curve
                                                                                                               assumptions. Nevertheless, it is
                                                                                                               recognized that substantial schedule
                                                                                                               uncertainties (and risks) exist. See also
                                                                                                               Chits 72 and 82.




      Status Date: 12/23/2004                                                                             60
                                                                                    NCSX Engineering CHIT Tracking Log


         Design Review                                                                        Review Board
      [Cog Engr/RLM/Chair]        Rvw Date    #      Chit Finding [Originator]              Recommendation                    Project Disposition                Responsibility               Status                Due Date
  Field Period Assembly Peer      ######     71 Dry runs should be performed even if      Concur                     See response to Chit 67.                                     Closed. Resolution of this chit
Review              Cole-Viola-                 there is a time pressure - L.                                                                                                     will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      Wegener                                                                                                                           67.

  Field Period Assembly Peer      ######     72 A lot of detailed technologies are not Concur                        See response to Chit 70.                                     Closed. Resolution of this chit
Review              Cole-Viola-                 yet qualified; hence a large                                                                                                      will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      uncertainty in the overall schedule -                                                                                             70.
                                                L. Wegener
  Field Period Assembly Peer      ######     73 Leica Laser: 0.0005” appears to be     Concur                        See response to Chit 6.                                      Closed. Resolution of this chit
Review              Cole-Viola-                 too optimistic, needs to be proven;                                                                                               will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      practical experience of W7-X: ~0.2                                                                                                6.
                                                mm - L. Wegener
  Field Period Assembly Peer      ######     74 Software: at W7-X software used is:    Concur                        This information is acknowledged.         Raftopoulos        Closed. No further action
Review              Cole-Viola-                 Leica Axyz; Metrolog (Metrologic                                                                                                  required.
  Brown/Dudek-Nelson/Perry                      Incorp.); Polyworks (our metrology
                                                software has to be compatible to the
                                                CADDS5 CAD system) - L. Wegener

  Field Period Assembly Peer      ######     75 Proper preparation of measuring           Concur                     Planning of measurement campaigns         Brooks             WIP                               15-Apr-07
Review              Cole-Viola-                 campaigns i.e. positions of tracker,                                 will be included in the dimensional
  Brown/Dudek-Nelson/Perry                      lines of sight, net-installation etc. can                            control plans being prepared for each
                                                save a lot of time. - L. Wegener                                     station.
  Field Period Assembly Peer      ######     76 Assess usability in NSCX assembly of      Concur                                                                                  Closed. Resolution of this chit
Review              Cole-Viola-                 other metrology systems e.g.                                                                                                      will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      theodolites, photogrammetry - L.                                                                                                  40.
                                                Wegener
  Field Period Assembly Peer      ######     77 Our experiences: non-conformities at      Concur                     Agreed. This is our experience as well.                      Closed. No further action
Review              Cole-Viola-                 components and assemblies extend                                                                                                  required.
  Brown/Dudek-Nelson/Perry                      the required metrology service. - L.
                                                Wegener
  Field Period Assembly Peer      ######     78 Station 2, 3: a large development         Concur                     The shims and reaming designs are        Cole                WIP                               15-Dec-07
Review              Cole-Viola-                 program is still outstanding;                                        being reviewed. Alternate concepts are
  Brown/Dudek-Nelson/Perry                      particularly reaming and the shim                                    being looked at and will be evaluated
                                                production - L. Wegener                                              on the basis of cost, requirements,
  Field Period Assembly Peer      ######     79 Only one station at stage 2 appears       Project should evaluate    The design of the modular coil interface Strykowsky          WIP                               15-Dec-06
Review              Cole-Viola-                 not to be sufficient for the planned      this.                      hardware is being finalized. When the Viola
  Brown/Dudek-Nelson/Perry                      assembly program.         - L. Wegener                               design concept is sufficiently mature,
                                                                                                                     the assembly time and resource
  Field Period Assembly Peer      ######     80 Station 4, 5: The design, qualification   Project should evaluate    See response to Chit 55.                                     Closed. Resolution of this chit
Review              Cole-Viola-                 and procurement of the assembly           this.                                                                                   will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      tooling and the associated procedures                                                                                             55.
                                                in the shown schedule appear to be
                                                very optimistic (only 10 months).
                                                Sufficient resources should be
                                                allocated to these tasks. - L.
  Field Period Assembly Peer      ######     81 Second metrology team requires            Project should evaluate    Training will be factored into our    Viola
Review              Cole-Viola-                 sufficient training time. - L. Wegener    this.                      revised schedule based on the outcome
  Brown/Dudek-Nelson/Perry                                                                                           of our utilization studies.
  Field Period Assembly Peer      ######     82 Learning curves in station 2 appear to Project should evaluate       See response to Chit 70.                                     Closed. Resolution of this chit
Review              Cole-Viola-                 be too optimistic. - L. Wegener        this.                                                                                      will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                                                                                                                                                        70.
  Field Period Assembly Peer      ######     83 There are only 5 to 10 months time        Project should evaluate    See response to Chit 55.                                     Closed. Resolution of this chit
Review              Cole-Viola-                 for all the open development issues       this.                                                                                   will be tracked as part of Chit
  Brown/Dudek-Nelson/Perry                      (station 2 thru 5). - L. Wegener                                                                                                  55.




      Status Date: 12/23/2004                                                                                   61
                                                                                      NCSX Engineering CHIT Tracking Log


         Design Review                                                                         Review Board
      [Cog Engr/RLM/Chair]        Rvw Date     #       Chit Finding [Originator]             Recommendation                   Project Disposition               Responsibility              Status           Due Date
  Field Period Assembly Peer      ######      84 From mid of 07 4 to 6 work packages       Concur                  Schedule and resource requirements        Strykowsky          WIP                         15-Dec-06
Review              Cole-Viola-                  in parallel - requires the ramp up of                             for training; space requirements for      Viola
  Brown/Dudek-Nelson/Perry                       trained and experienced staff;                                    storage of equipment; and support
                                                 sufficient logistic and space;                                    services (aka back office support) will
                                                 accessibility etc. Experience W7-X:                               be revisited as part of our ETC update
                                                 we always have a lack of space for                                for FPA.
                                                 storage of components and
                                                 equipment; a lot of services in the
                                                 background are needed to organise
                                                 the daily work, material flow,
  Field Period Assembly Peer      ######         A detailed WBS should be etc. - L.
                                              85 preparation of documents available        Concur                  A high level description of the work     Viola                Closed. No further action
Review              Cole-Viola-                  for each work station - L. Wegener                                requirements for each station is defined                      required.
  Brown/Dudek-Nelson/Perry                                                                                         in the MIT/QA Plan. Detailed work
Station 3 Tooling PDR             ######      1   Strongly consider quantifying lateral    Concur                  requirements for each station are
     Brown/Dudek/Reiersen                         upset forces that the vessel and 3-
                                                  packs must withstand, it seems this
                                                  has not been done. [Gettelfinger]


Station 3 Tooling PDR             ######      2   Define criteria for +/- 0.020" [Cole]    Concur
     Brown/Dudek/Reiersen

Station 3 Tooling PDR             ######      3   Ste external references to check         Concur
     Brown/Dudek/Reiersen                         whether parts have moved. [Cole]

Station 3 Tooling PDR             ######      4   The assembly sequence places             Concur
     Brown/Dudek/Reiersen                         constraints on the coil-to-coil
                                                  interface hardware design and vice-
                                                  versa. Need to develop the tooling
                                                  and hardware design concurrently.
                                                  [Reiersen]

Station 3 Tooling PDR             ######      5   Consider using more or larger bolts to Concur
     Brown/Dudek/Reiersen                         connect fixture to ports 12. [Dudek]

Station 3 Tooling PDR             ######      6   Unless stress analysis dictates that     Concur
     Brown/Dudek/Reiersen                         full welds are required change the
                                                  weld detail to a stitch weld (e. g. ~)
                                                  1 inch weld every 2 inches. The
                                                  additional weld is labor ($).
                                                  [Raftopoulos]


Station 3 Tooling PDR             ######      7   Consider whether relative position of    Concur
     Brown/Dudek/Reiersen                         rails and VV needs to be done. [Cole]

Coil Structure Peer Review        1/17/2007   1   Coil structure rests on cover plate for Concur
                                                  an existing building penetration. A
   Dahlgren/Reiersen/Dudek                        structure will be needed to carry
Coil Structure Peer Review        1/17/2007   2   loads to the building structure [Perry] Concur
                                                  New design of coil structures will
                                                  increase cost and schedule required
   Dahlgren/Reiersen/Dudek                        for final assembly due to the extra
Coil Structure Peer Review        1/17/2007   3   steps required. These increases
                                                  Interface with base support structure Concur
                                                  (p13) should have sliding joints at
   Dahlgren/Reiersen/Dudek                        tops of columns. Columns pinned top
                                                  and bottom will change elevation




      Status Date: 12/23/2004                                                                                 62
                                                                                        NCSX Engineering CHIT Tracking Log


          Design Review                                                                       Review Board
      [Cog Engr/RLM/Chair]       Rvw Date   #          Chit Finding [Originator]            Recommendation        Project Disposition   Responsibility   Status   Due Date
Coil Structure Peer Review      1/17/2007   4   For tension ring allow access to TF       Concur
                                                coil radial pre-load nuts after
   Dahlgren/Reiersen/Dudek                      assembly. [Kalish]
Coil Structure Peer Review      1/17/2007   5   TF coil analysis had different            Concur
                                                restraints revisit analysis stress,
   Dahlgren/Reiersen/Dudek                      deflection, error field, and fatigue.
Coil Structure Peer Review      1/17/2007   6   [Kalish]
                                                This design seems to provide less         Concur [Need to
                                                toroidal stiffness than the original      consider]
   Dahlgren/Reiersen/Dudek                      design. It may increase the shear
Coil Structure Peer Review      1/17/2007   7   loadings whether it is advantageous
                                                Consider at the modular coil bolted       Concur
                                                to incorporate the new PF ring
   Dahlgren/Reiersen/Dudek                      support as part of the PF coil case.
Coil Structure Peer Review      1/17/2007   8   [Kalish]
                                                Vertical restraint of the TF coils is     Concur
                                                important to reduce coil stress with
   Dahlgren/Reiersen/Dudek                      combined field, My memory of the
Coil Structure Peer Review      1/17/2007   9   earlier analysis is that this is more
                                                Consider supporting PFS CFF required      Concur
                                                than C-Feet only, to reduce ˜ 80º
   Dahlgren/Reiersen/Dudek                      separation between supports.
Coil Structure Peer Review      1/17/2007 10    [Zarnstorff]
                                                Examine earlier analysis of field         Concur
                                                errors. Due to vertical asymmetric
   Dahlgren/Reiersen/Dudek                      TF mounting. [Zarnstorff]
Coil Structure Peer Review      1/17/2007 11 Vertical alignment of the CS to the          Concur
                                             MC's must be controlled, suggest
   Dahlgren/Reiersen/Dudek                   aligning it after cooldown using
Coil Structure Peer Review                   magnetic measurements and
                                1/17/2007 12 What aligns CS and structure to MC      Concur
                                             and TF's in radial direction? Possible
   Dahlgren/Reiersen/Dudek                   solution align CS and PF's to TF
Coil Structure Peer Review                   How will the TF array stay to the
                                1/17/2007 13 structure, and the TF Arrayaligned      Concur
                                             with the MC array? By sticking of the
   Dahlgren/Reiersen/Dudek                   sliding joints during pulses, the coils
Coil Structure Peer Review                   could wedge in the "key-ways"
                                1/17/2007 14 New TF reaction ring short the full OH Concur
                                             flux swing. How much current flows
   Dahlgren/Reiersen/Dudek                   due to the Loop Voltage ˜ 1V? How
Coil Structure Peer Review                   Stresses and of the ring? the TF coil Concur
                                1/17/2007 15 much heatingdeflections of Make of
                                             shall be checked again because the
   Dahlgren/Reiersen/Dudek                   support conditions are slightly
Coil Structure Peer Review                   different and the PF's and
                                1/17/2007 16 1) Control coils need to bePF-6 loads        Concur
                                             considered. 2) Utility headers need to
   Dahlgren/Reiersen/Dudek                   be mounted somewhere else now
Coil Structure Peer Review                   that structure is eliminated. in the
                                1/17/2007 17 Consider coil fault conditions[Brown]        Concur
                                             design of the structure. [Dudek]
   Dahlgren/Reiersen/Dudek
Modular Coil Strain Gage FDR    1/24/2007   1   Strain gages on steel will be fairly      Concur
    Willamson/Nelson/Reiersen                   each to interpret but gages on the
                                                composite conductor and chill plates
                                                may yield readings that are not so
                                                easy to interpret due to the
                                                uncertainty of the material. [Brooks]
Modular Coil Strain Gage FDR    1/24/2007   2   Perform accuracy measurement on           Concur
    Willamson/Nelson/Reiersen                   FBG sensors. [Dong]




      Status Date: 12/23/2004                                                                                63
                                                                                          NCSX Engineering CHIT Tracking Log


         Design Review                                                                          Review Board
     [Cog Engr/RLM/Chair]          Rvw Date   #         Chit Finding [Originator]             Recommendation                Project Disposition           Responsibility   Status   Due Date
Modular Coil Strain Gage FDR      1/24/2007   3   Assume that installation and              Concur
    Willamson/Nelson/Reiersen                     electronics costs are in WBS1 as they
                                                  are not in WBS 5. [Gettelfinger]


Modular Coil Strain Gage FDR      1/24/2007   4   Consider monitoring the coolant tube      Concur
    Willamson/Nelson/Reiersen                     inlet and outlet temperatures. Useful
                                                  diagnostic for monitoring will
                                                  cooldown. [Reiersen]
Modular Coil Strain Gage FDR      1/24/2007   5   Monitor coil resistance to infer coil     Concur
    Willamson/Nelson/Reiersen                     temperature. Reduce number of
                                                  TC's. 600 looks to be an excessive
                                                  number fold into coil protection.
Modular Coil Strain Gage FDR      1/24/2007   6   [Reiersen] problems with
                                                  Verify that                            Concur
    Willamson/Nelson/Reiersen                     displacement gage were due to
                                                  condensation could be done at PPPL.
                                                  Also consider installing on machine.
Modular Coil Strain Gage FDR      1/24/2007   7   [Reiersen] the calibration of FBG's so Concur
                                                  Investigate
    Willamson/Nelson/Reiersen                     they have the same issues as Fabry
                                                  Perot gages. [Reiersen]

Modular Coil Strain Gage FDR      1/24/2007   8   We need to use calibrated gages if        Concur
    Willamson/Nelson/Reiersen                     they are used to validate the
                                                  structures models. Require the use
                                                  of weldable gages. [Reiersen]
Modular Coil Interface Hardware   2/22/2007   1   Consider a "Plan B" for the possible      Concur                  1. Worst case fitups are being
           PDR                                    condition of inadequate fit-up which                              analyzed. May preclude using
  Williamson/Nelson/Reiersen                      might require additional machining of                             constant thickness shims
                                                  the shims. [Reiersen]                                             everywhere. (Brooks)
                                                                                                                    2. Production prototype (A1:A2)
                                                                                                                    will determine whether contoured
                                                                                                                    shims are required. If so, use of a
                                                                                                                    high friction foil or a spray
                                                                                                                    application of alumina can be
                                                                                                                    done post-machining.
Modular Coil Interface Hardware   2/22/2007   2   Identify if any of the existing holes     Concur                  Holes should be examined and
           PDR                                    need to be worked on. [Cole]                                      cataloged as to whether any re-
  Williamson/Nelson/Reiersen                                                                                        work is required. Bushing OD
                                                                                                                    could be determined at the same
                                                                                                                    time.
Modular Coil Interface Hardware   2/22/2007   3   What are tolerance requirement for        Concur                  Requirements for positioning the
           PDR                                    the half-period assembly? Need to                                 coil current centers will be
  Williamson/Nelson/Reiersen                      consciously define. Needs more                                    provided in the Station 2
                                                  attention. [Cole]                                                 assembly specification. (Cole)
                                                                                                                    Input to be provided by Brooks.
Modular Coil Interface Hardware   2/22/2007   4   Establish criteria for adequate fit-up    Concur                  1. FEA analysis indicates that
           PDR                                    of the shims [Cole]                                               maximum deflections will be on
  Williamson/Nelson/Reiersen                                                                                        the order of 1 mil (Fan)
                                                                                                                    2. Joint tension tests will measure
                                                                                                                    deflections upon tensioning the
                                                                                                                    bolts (Gettelfinger)
                                                                                                                    3. Approach to finalize fit-up
                                                                                                                    criteria is TBD




      Status Date: 12/23/2004                                                                                  64
                                                                                      NCSX Engineering CHIT Tracking Log


         Design Review                                                                           Review Board
      [Cog Engr/RLM/Chair]         Rvw Date   #         Chit Finding [Originator]              Recommendation                     Project Disposition            Responsibility   Status   Due Date
Modular Coil Interface Hardware   2/22/2007   5   Do ultrasonic testing during tension       Concur                      UT will be performed during
            PDR                                   test. [Cole]                                                           tension test
  Williamson/Nelson/Reiersen
Modular Coil Interface Hardware   2/22/2007   6   Measure µ at LN temperature with           Concur                      Stellalloy and SS316LN have very
            PDR                                   Stellalloy. Since Stellalloy seems                                     comparable strength properties.
  Williamson/Nelson/Reiersen                      stronger at LN temperature than                                        There are no plans to machine
                                                  standard stainless and since the                                       Stellalloy test pieces out of the
                                                  failure seems to be destruction of the                                 prototype casting for friction tests.
                                                  SS surface the maximum µ may be
                                                  higher with Stellalloy. [Zarnstorff]

Modular Coil Interface Hardware   2/22/2007   7   I recall Gettelfinger getting µ ˜ 0.7 in   Concur - Friction testing   Friction testing will be performed
           PDR                                    one of his tests at very high clamping     should be performed         over a representative range of
  Williamson/Nelson/Reiersen                      shims to increase pressure (˜ 7000         over an appropriate         pressures.
                                                  PSI?). Consider understanding shims        range of pressures.
                                                  to increase pressure to obtain this
                                                  high µ. [Zarnstorff]

Modular Coil Interface Hardware   2/22/2007   8Tabulate deflection and bolt shear            Concur - Need to resolve The overloading of the bushings
           PDR                                 loads in case without additional inner                                 on the A-A flange will be resolved
  Williamson/Nelson/Reiersen                   leg bolts with ˜ no friction on inner                                  by adding additional bolts.
                                               leg region. Consider if this is a more
                                               attractive solution than added bolt
                                               design. [Zarnstorff]
Modular Coil Interface Hardware   2/22/2007 9 Shims must protrude beyond flange              Concur - Also beneficial    A handling feature for the shims
           PDR                                 or have a handle for insertion and            for reducing peak           will be added.
  Williamson/Nelson/Reiersen                   positioning. [Viola]                          stresses in shims.
Modular Coil Interface Hardware   2/22/2007 10 Eliminate spherical washers!                  Concur -Consider            1. Loss of preload will be tested
           PDR                                 Unnecessarily costly and potential                                        in bolt tension tests with spherical
  Williamson/Nelson/Reiersen                   loss of preload. [Viola]                                                  washers and flat washers. Test
                                                                                                                         will also provide cost data.
                                                                                                                         2. Design solution may be to use
                                                                                                                         only where necessary to save
                                                                                                                         cost. Spherical washers are
                                                                                                                         needed where stud is not normal
                                                                                                                         to spotface.

Modular Coil Interface Hardware   2/22/2007 11 The concern is do we have a pre fit-          Concur - If needed to be The assembly sequence will be
           PDR                                 up of the MC before the diamond               determined by            worked out on the production
  Williamson/Nelson/Reiersen                   coated shims are installed? [Brown]           prototyping.             protoype (A1:A2)

Modular Coil Interface Hardware   2/22/2007 12 Make as many similar parts as          Concur                             Plan is to minimize the number of
           PDR                                 possible i.e. all shims have same                                         different parts
  Williamson/Nelson/Reiersen                   shape. [Viola]
Modular Coil Interface Hardware   2/22/2007 13 In place of planned " welded threaded Concur                              A1 adapters to replace through
           PDR                                 hole adapters" use A286 nuts and                                          holes with tapped holes will be
  Williamson/Nelson/Reiersen                   washers. Use box wrench to resist                                         replaced with standard nuts
                                               rotation during tightening operations.
                                               [Heitzenroeder]
Modular Coil Interface Hardware   2/22/2007 14 Expedite completion of coil-to-coil    Concur                             Daily meetings are being held at
           PDR                                 assembly prototyping to resolve                                           3:45 to review daily progress and
  Williamson/Nelson/Reiersen                   issues that cannot be otherwise                                           make plans for the following day.
                                               addressed. [Reiersen]




      Status Date: 12/23/2004                                                                                       65
                                                                                       NCSX Engineering CHIT Tracking Log


         Design Review                                                                          Review Board
      [Cog Engr/RLM/Chair]         Rvw Date   #        Chit Finding [Originator]              Recommendation                      Project Disposition           Responsibility   Status   Due Date
Modular Coil Interface Hardware   2/22/2007   15 Need to establish acceptable fit up        Concur                       1. See Chit 4 re fit-up criteria.
            PDR                                  requirements for the shim. Also,                                        2. Good fit-up around the stud is
  Williamson/Nelson/Reiersen                     determine where the preferred                                           seen as important to provide a
                                                 contact area is [Reiersen]                                              good load path for the bolt
                                                                                                                         preload. The impact of not having
                                                                                                                         good fit-up in the shell region will
                                                                                                                         be investigated.
Modular Coil Interface Hardware   2/22/2007   16 Need to finalize shim area. Fit up         Concur                       See chits 12 and 15.
           PDR                                   favors a smaller area. Shear is the
  Williamson/Nelson/Reiersen                     glass epoxy favors a larger area.
                                                 [Reiersen]
Modular Coil Interface Hardware   2/22/2007   17 Load washer may have to be                 Concur                       Interface with hydraulic
           PDR                                   modified to accommodate hydraulic                                       tensioners will be investigated.
  Williamson/Nelson/Reiersen                     tensioners. [Reiersen]
Modular Coil Interface Hardware   2/22/2007   18 Resolve issue of what the stress           Concur                       Stress allowaqbles will be
           PDR                                   allowables should be in the G-11                                        reviewed and set per the NCSX
  Williamson/Nelson/Reiersen                     bushing. [Reiersen]                                                     Structural and Cryogenic Design
                                                                                                                         Criteria.
Modular Coil Interface Hardware   2/22/2007   19 Send analysis results to Fan for           Concur                       Analyses will be documented and
           PDR                                   checking. [Reiersen]                                                    provided for proejct review.
  Williamson/Nelson/Reiersen
Modular Coil Interface Hardware   2/22/2007   20 Finalize location of bolts to resolve      Concur                       Adding more bolts on A-A will be
           PDR                                   peak bushing stress concerns                                            investigated for reducing peak
  Williamson/Nelson/Reiersen                     especially on A- A [Reiersen]                                           bushing stresses.
Modular Coil Interface Hardware   2/22/2007   21 Confirm that single shear test setup       Concur                       Double shear setup is being
           PDR                                   is OK. If not, consider setting it up a                                 considered.
  Williamson/Nelson/Reiersen                     a double shear test. [Reiersen]

     Rogowski Coil CDR            4/18/2007   1   Consider making additional coils for      Concur
     Labik/Stratton/Zarnstorff                    redundancy at each location if
                                                  incremental cost is reasonable.
                                                  [Chrzanowski & Kaita]
     Rogowski Coil CDR            4/18/2007   2   Add RTV or epoxy (CTC540) over            Concur
     Labik/Stratton/Zarnstorff                    leads in groove to hold leads in place
                                                  and to provide additional electrical
                                                  insulation . [Chrzanowski]
     Rogowski Coil CDR            4/18/2007   3   Consider holding the coiling the          Concur
     Labik/Stratton/Zarnstorff                    groove rising shim stock welded to
                                                  the coil forms on both side, fewer,
                                                  simpler pieces. [Zarnstorff]
     Rogowski Coil CDR            4/18/2007   4   Silver solder the transition from small   Concur
     Labik/Stratton/Zarnstorff                    to large wire. Easier than welding
                                                  already raised in protect and
                                                  characterized. [Zarnstorff]
     Rogowski Coil CDR            4/18/2007   5   Consider putting kapton on the back       Concur
     Labik/Stratton/Zarnstorff                    of the copper electrostatic shield (6)
                                                  To reduce number of stops &
                                                  separate layers. Could you eliminate
                                                  layer (5)? [Zarnstorff]
     Rogowski Coil CDR            4/18/2007   6   A cost estimate is needed It looks        Other [out of scope. Is
     Labik/Stratton/Zarnstorff                    very expensive. Are the cost included     in the rebase lined costs]
                                                  in the WBS 3 etc.? [Neilson]




      Status Date: 12/23/2004                                                                                      66
                                                                                    NCSX Engineering CHIT Tracking Log


       Design Review                                                                          Review Board
   [Cog Engr/RLM/Chair]         Rvw Date    #          Chit Finding [Originator]            Recommendation             Project Disposition   Responsibility   Status   Due Date
   Rogowski Coil CDR            4/18/2007   7    A backup plan is needed to keep it off   Concur
   Labik/Stratton/Zarnstorff                     the critical path, e.g., part both in
                                                 the 3rd FP, or only installation.
                                                 [Neilson]
   Rogowski Coil CDR            4/18/2007   8    Installation should (probably) be        Other [no action
   Labik/Stratton/Zarnstorff                     done as part of MC bake                  required, answers are
                                                 (Chrzanowski/Langish) not FPA            yes.
                                                 (Viola). Are the installation costs
                                                 budgeted? [Neilson]
   Rogowski Coil CDR            4/18/2007   9    Show how robust wire is                  Concur
   Labik/Stratton/Zarnstorff                     attached/protected until it gets to a
                                                 secure junction box. [Paul Fogarty]

   Rogowski Coil CDR            4/18/2007   10 The electrostatic shield should be         Concur
   Labik/Stratton/Zarnstorff                   shielded so as not to short out the
                                               poloidal gap (i.e. can only touch the
                                               steel of the coil winding format one
                                               location sounds like 100v, but talk to
                                               Chrzanowski.
   Rogowski Coil CDR            4/18/2007   11 Consider routing leads out of              Concur
   Labik/Stratton/Zarnstorff                   cryostat via the port 12 flanges. This
                                               allows the earliest routing of the
                                               leads. [Zarnstorff]
   Rogowski Coil CDR            4/18/2007   12 Step 5 of the design: 1/2 lap wrap         Concur
   Labik/Stratton/Zarnstorff                   gives twice the thickness of the tape
                                               0.023" insulation stack up. Leave
                                               sufficient gaps to get only twice the
                                               thickness. [Zarnstorff]
   Rogowski Coil CDR            4/18/2007   13 The electrostatic shield needs to be       Concur
   Labik/Stratton/Zarnstorff                   gournded, somehow and somewhere
                                               consider making the cover of the SS
                                               hold down structures be the
                                               elctrostatic shield and elminate the
                                               copper shield. [Zarnstorff]

Rogowski Coil (High Temp) PDR   6/12/2007   1    Consider MG0 coax with larger OD to      Concur
                                                 increase insulation thickness to
                                                 reduce risk of shorting inner
                                                 conductor to ground. [Menards]
Rogowski Coil (High Temp) PDR   6/12/2007   2    Fix gap so it is immobile allow it to    Concur
                                                 "bulge" at other locations. [Gerhardt]

Rogowski Coil (High Temp) PDR   6/12/2007   3    Route leads out through port 12 and      Concur
                                                 install leads at the same time
                                                 Rogowski is installed or, install
                                                 Rogowski on spool piece and route
                                                 out on spool piece port. [Zarnstorff]

Rogowski Coil (High Temp) PDR   6/12/2007   4    Define the max/min space of the VV       Concur
                                                 and that is available for the Rogowski
                                                 coil giver machine assembly
                                                 requirements. [Brown]




    Status Date: 12/23/2004                                                                                       67
                                                                                           NCSX Engineering CHIT Tracking Log


        Design Review                                                                               Review Board
     [Cog Engr/RLM/Chair]             Rvw Date    #          Chit Finding [Originator]            Recommendation            Project Disposition   Responsibility   Status   Due Date
  Rogowski Coil (High Temp) PDR       6/12/2007   5    NCSX to make Rogowski's longer the       Concur
                                                       than exact fit up…… maybe make a
                                                       "custom" measurement and then add
                                                       1" -2" to length for fabrication.
                                                       [Gerhardt]
  Rogowski Coil (High Temp) PDR       6/12/2007   6    Consider taking leads out Port 12 (or    Concur
                                                       one of the other ports that will be in
                                                       place and penetrate the cryostat on
                                                       day one) [Reiersen]
  Rogowski Coil (High Temp) PDR       6/12/2007   7    If possible, nice to have thicker        Concur
                                                       insulation in general, can the winding
                                                       manual or co-axle cable be larger
                                                       [Gerhardt]
  Rogowski Coil (High Temp) PDR       6/12/2007   8    Do thermal cycling testing of the        Concur
                                                       prototype Rogowski coil in an over (
                                                       a few cycles up to 400 C) to verify
                                                       that the center conductor does not
                                                       short to the sheath. [Stratton]

Outboard Bolted Joints Shims FDR      6/29/2007   1    Verify that the loads carry through   Concur-Include in
                Williamson, Nelson,                    the washers without significant       documentation of
              Reiersen                                 deformation and yield which would     analyses
                                                       compromise tension over time. [Viola]

Outboard Bolted Joints Shims FDR      6/29/2007   2    Are the variations in shim thicknesses   Concur- Cole to review
                Williamson, Nelson,                    accommodated by the threaded             with Viola. May be an
              Reiersen                                 length of studs? Especially where        issue on A1 requiring a
                                                       studs threads impede screwing into       special length stud.
                                                       flange. [Viola]
Outboard Bolted Joints Shims FDR      6/29/2007   3    What is the minimum wall thickness       Concur - O.1 per
                Williamson, Nelson,                    allowed on bushings? [Viola]             drawings
              Reiersen
Outboard Bolted Joints Shims FDR      6/29/2007   4    Solution anneal shims after all          Concur
                Williamson, Nelson,                    grinding and maching is finished if
              Reiersen                                 required to meets mu X 1.02
                                                       requirements. [Heitzenroeder]
Outboard Bolted Joints Shims FDR      6/29/2007   5    Add a flatness callout of 1 mil on the   Concur
                Williamson, Nelson,                    shim. [Reiersen]
              Reiersen
Outboard Bolted Joints Shims FDR      6/29/2007   6    Load washer material needs to be         Other- Needs to be
                Williamson, Nelson,                    changed from T1 to Inconel (to match     addressed. This is one
              Reiersen                                 what was delivered) [Dudek]              option.
Outboard Bolted Joints Shims FDR      6/29/2007   7    Aluminia coating should be specified     Concur- Modify SS shim
                Williamson, Nelson,                    as 0.025" + 0.003"/-0.002" with a        thickness appropriately.
              Reiersen                                 surface roughness [Gettelfinger]

Outboard Bolted Joints Shims FDR      6/29/2007   8    Complete confirmatory tests (shear,      Concur
                Williamson, Nelson,                    tension, cycle, edge loading) prior to
              Reiersen                                 installation. [Reiersen]

Outboard Bolted Joints Shims FDR      6/29/2007   9    Determine max depth of spot face         Concur
                Williamson, Nelson,                    before setting height of insulation
              Reiersen                                 rings. [Reiersen]
Outboard Bolted Joints Shims FDR      6/29/2007   10   Address issue of Inconel v titanium      Concur
                Williamson, Nelson,                    load washer. Titanium is specified,
              Reiersen                                 Inconel was purchased. [Reiersen]




       Status Date: 12/23/2004                                                                                         68
                                                                                          NCSX Engineering CHIT Tracking Log


          Design Review                                                                            Review Board
      [Cog Engr/RLM/Chair]            Rvw Date     #          Chit Finding [Originator]          Recommendation            Project Disposition   Responsibility   Status   Due Date
Outboard Bolted Joints Shims FDR      6/29/2007    11   Re-evaluate installation cost of       Concur
                Williamson, Nelson,                     bushings based on Edwards/Fogarty
              Reiersen                                  timeline and re-visited fit
                                                        requirements use opportunity
                                                        presents by upcoming weld test in
                                                        using winding joints. [Reiersen]

Outboard Bolted Joints Shims FDR      6/29/2007    12   Define where instrumented studs        Concur
                Williamson, Nelson,                     should be used. [Reiersen]
              Reiersen
Outboard Bolted Joints Shims FDR      6/29/2007    13 Higher the 1.02 magnetic                 Concur
                Williamson, Nelson,                   permeability needs Brooks
              Reiersen                                concurrence that it is ok. [Reiersen]
Outboard Bolted Joints Shims FDR      6/29/2007   14  Determine whether edge loading           Concur
                Williamson, Nelson,                   (time contact) of the alumina shims
              Reiersen                                is a problem or not. If so, it may be
                                                      necessary to undercut the edge or
                                                      radius it. [Reiersen]
Outboard Bolted Joints Shims FDR      6/29/2007   15  For the thru-hole configuration with a   Concur- Requirement to
                Williamson, Nelson,                   hex-hut, there should be a               positively lock fasteners
              Reiersen                                mechanism to secure the hex-nut          per bolt design
                                                      from turning under cyclic load.          handbook.
                                                      [Zarnstorff]
Outboard Bolted Joints Shims FDR      6/29/2007   16  Need to review effect of material        Concur
                Williamson, Nelson,                   choice for washers (T2 or Inconel) on
              Reiersen                                bolt pre-load at LN temperature and
                                                      effect on shear load capability before
                                                      changing spec. [Zarnstorff]
Outboard Bolted Joints Shims FDR      6/29/2007   17  Please place not on drawing              Concur
                Williamson, Nelson,                   specifying minimum clearance
              Reiersen                                between spot fact IN and load and
                                                      spherical washer OD. Also, allow
                                                      grinding at washer OD. [Viola]
Outboard Bolted Joints Shims FDR      6/29/2007   18  Please change the ID of the shim hole    Concur
                Williamson, Nelson,                   to provide 1/16" diametral gap
              Reiersen                                between stud and alumina coated ID.
                                                      [Viola]
Outboard Bolted Joints Shims FDR      6/29/2007   19  For shims secure with 1/16" thick        Disagree - Securing
                Williamson, Nelson,                   minimum securing to adjacent shims       unbolted shims needs to
              Reiersen                                on both sides. [Viola]                   be resolved. Consider
                                                                                               welding shim to flange

   TF-2 Coil Wedge Repair Peer        7/10/2007    1    Review quality and schedule concerns Concur- TFI jailing cold
 Review    Kalish/Reiersen/Neilson                      w/Everson management. Solicit         testing.
                                                        commitment to a : get well" plan.
                                                        Quality issues include O-ing
                                                        problems, torn glass straps when
                                                        inserting in mold. [Reiersen]
   TF-2 Coil Wedge Repair Peer        7/10/2007    2    Fill gap with 0.005" glass cloth
 Review    Kalish/Reiersen/Neilson                      soaked with CTD.540 (air cleaned
                                                        cryogenic epoxy. [Chrzanowski]
   TF-2 Coil Wedge Repair Peer        7/10/2007    3    Request that Everson develop and      Concur
 Review    Kalish/Reiersen/Neilson                      submit a journal repair procedure for
                                                        TF 2 for NCSX approval. [Reiersen]




       Status Date: 12/23/2004                                                                                        69
                                                                                       NCSX Engineering CHIT Tracking Log


         Design Review                                                                           Review Board
     [Cog Engr/RLM/Chair]           Rvw Date    #         Chit Finding [Originator]            Recommendation            Project Disposition   Responsibility   Status   Due Date
  TF-2 Coil Wedge Repair Peer       7/10/2007   4   Analyze the TF with interface loads      Concur
Review    Kalish/Reiersen/Neilson                   from the CS assembly. [Reiersen]
   Station 3 FDR                    7/17/2007   1   Verify test/development items for coil   Concur
     Brown/Dudek/Reiersen                           assembly are included in schedule.
                                                    [Parsells]
   Station 3 FDR                    7/17/2007   2   Confirm that the final mate-up of the    Concur
     Brown/Dudek/Reiersen                           two half periods does not necessitate
                                                    major changes to the design of
                                                    Station 3. [Ellis]
   Station 3 FDR                    7/17/2007   3   Investigate if it's possible to move     Concur
     Brown/Dudek/Reiersen                           both MCHP's away from VV to create
                                                    more clearance (as contingency plan)
                                                    perhaps by altering the path. [Dudek]

   Station 3 FDR                    7/17/2007   4   Perform a FMEA and look at               Concur
     Brown/Dudek/Reiersen                           failure/accident scenarios for the
                                                    structure. [Raftopoulos]
   Station 3 FDR                    7/17/2007   5   What are the lateral/moment loads        Concur
     Brown/Dudek/Reiersen                           that the vacuum vessel support to
                                                    legate. Can it survive a "bump" fro
                                                    the crane? [Raftopoulos]
   Station 3 FDR                    7/17/2007   6   Examine the stiffness of the VV          Concur
     Brown/Dudek/Reiersen                           lateral support in response to lateral
                                                    leads. (inadvertent loads due to
                                                    bumping) [Ellis]
   Station 3 FDR                    7/17/2007   7   Determine minimum clearance based        Concur
     Brown/Dudek/Reiersen                           on as-built measurements in regions
                                                    of tight tolerances. [Reiersen]

   Station 3 FDR                    7/17/2007   8   Resolve issue of where welding           Other- Out of scope but
     Brown/Dudek/Reiersen                           between coils within a half-period are needs to be addressed.
                                                    performed. We do have a baseline
                                                    (per the assembly sequences plan)
                                                    but it is not clear this was a conscious
                                                    choice. [Reiersen]

   Station 3 FDR                    7/17/2007   9  Consider moving the vessel outboard       Concur
     Brown/Dudek/Reiersen                          from nominal to increase the
                                                   minimum clearance between the
                                                   wand modular coils. [Reiersen]
   Station 3 FDR                    7/17/2007   10 Provide a list of tooling required for    Concur
     Brown/Dudek/Reiersen                          Station 3 that is outside the scope of
                                                   this review. This needs usability for
                                                   design review and procurement.
                                                   [Reiersen]
   Station 3 FDR                    7/17/2007   11 Chits from previous design reviews        Concur
     Brown/Dudek/Reiersen                          e.g. 10/11/06 Peer Review for FPA
                                                   and 10/30/06 PDR for Station 3
                                                   needs to be closed before proceeding
                                                   with procurement. Get concurrence
                                                   from RLM before proceeding.
                                                   [Reiersen]
   Station 3 FDR                    7/17/2007   12 Stiffness of floor might need to be       Concur - Should show
     Brown/Dudek/Reiersen                          considered                                up in development trials.




      Status Date: 12/23/2004                                                                                       70
                                                                                        NCSX Engineering CHIT Tracking Log


         Design Review                                                                           Review Board
     [Cog Engr/RLM/Chair]           Rvw Date    #        Chit Finding [Originator]             Recommendation                      Project Disposition              Responsibility            Status     Due Date
   Station 3 FDR                    7/17/2007   13 Stability of screens need to be           Concur
      Brown/Dudek/Reiersen                         considered. [Cole]
MC Interface AA/AB/BC PDR           8/2/2007    1 Need to add to drawing a provision         Concur
Williamson/Nelson/Heitzenroeder                    for optional 1/4" (with
                                                   COUNTERBORE) holes for tolling to
                                                   hold during final machining. [Dudek]
MC Interface AA/AB/BC PDR           8/2/2007    2 Analysis documentation should              Concur
Williamson/Nelson/Heitzenroeder                    clearly define stress allowables an
                                                   compare calculated stresses to
                                                   allowables to assess whether
                                                   adequate structural margin exists.
                                                   Address uncertainties in analyses.
                                                   [Reiersen]
MC Interface AA/AB/BC PDR           8/2/2007    3 All shim must contain points at the        Concur
Williamson/Nelson/Heitzenroeder                    corner on the side facing the MC
                                                   flange surface. The points should be
                                                   stored in a separate layer. This info
                                                   will be used for point cloud data
                                                   reduction. [Brown]
MC Interface AA/AB/BC PDR           8/2/2007    4 Perform the additional analysis that       Concur
Williamson/Nelson/Heitzenroeder                    you think necessary will 5/8" weld
                                                   suffice? 3/4" may result in excessive
                                                   distortion. [Ellis]
MC Interface AA/AB/BC PDR           8/2/2007    5 Accept 31.5 ksi peak stress from           Concur
Williamson/Nelson/Heitzenroeder                    static since re-allow is 1.5 5 m point
                                                   of view on this stress to verify
                                                   acceptability. [Heitzenroeder]
Modular Coil Inboard Interface CC   8/7/2007    1 Include tooling design and                 Concur - Action P.J          Tooling design has been completed and Action: E. Perry     Closed            Closed 2/15/08
             PRD                                   fabrication/procurement in this scope     Fogarty                      demonstrated with prototypes. The final
Williamson/Nelson/Heitzenroeder                    of work. [Reiersen]                                                    tooling procured and fabrication has
                                                                                                                          been referred to Eric Perry as part of
                                                                                                                          station 6 scope. .
Modular Coil Inboard Interface CC   8/7/2007    2   Need to reconcile proposed design        Concur - Need to             The assembly of the C to C shim         Action: T. Brown   closed            Closed 2/15/08
             PRD                                    with project baseline (cost schedule     complete prior to OECM       configuration has been incorporated
Williamson/Nelson/Heitzenroeder                     and in sources) as well as the           review. Action; Mike         into the Assy sequence plan and was
                                                    assembly sequence plan. Cost and         Cole                         used to generate the current baseline
                                                    schedule impacts possible in WBS 75                                   schedule. The preparations for the
                                                    as well as WBS 14. [Reiersen]                                         OECM review are underway now and
                                                                                                                          these updates are based on the
                                                                                                                          proposed design.
Modular Coil Inboard Interface CC   8/7/2007    3   Consider adding pins as a capture        Concur - Action; Mike        The design changed by the FDR; this     M. Cole            Closed            Closed 2/15/08
             PRD                                    gesture to guard against the risk of a   Cole and Dave                chit no longer applies.
Williamson/Nelson/Heitzenroeder                     "midplane" shim walking or falling       Williamson
                                                    out. [Reiersen]
Modular Coil Inboard Interface CC   8/7/2007    4   Ensure that you consider any issues      Concur - Action; P.J         A Pro E model/sterolithography of the   PJ Fogarty         In Progress.
             PRD                                    associated with bringing all 3 120       Fogarty                      three period assemblies and
Williamson/Nelson/Heitzenroeder                     degree field periods together. All                                    mechanisum for positioning the FPA will
                                                    mockups only use 1. [Viola]                                           be fabricated to evaluate the assembly
                                                                                                                          of the coils.
  Rogowski Coil FDR                 8/9/2007    1   Update VVSA assembly drawing to          Concur
      Labik/Dudek/Dudek                             include Rogowski coil. [Reiersen]
  Rogowski Coil FDR                 8/9/2007    2   Update procedure to include              Concur
      Labik/Dudek/Dudek                             installation of Rogowski on VVSA.
                                                    [Viola]




      Status Date: 12/23/2004                                                                                        71
                                                                                      NCSX Engineering CHIT Tracking Log


     Design Review                                                                           Review Board
  [Cog Engr/RLM/Chair]        Rvw Date         #          Chit Finding [Originator]        Recommendation            Project Disposition   Responsibility   Status   Due Date
Rogowski Coil FDR              8/9/2007        3   Concern about the voltage standoff of Concur
    Labik/Dudek/Dudek                              all loops. At what voltage does it
                                                   begine to leak? At what voltage will
                                                   it arc through? This test should be
                                                   done for both the Rogowski
                                                   conductors and the flux loops.
                                                   [Brunner]
Rogowski Coil FDR              8/9/2007        4   Need to be able to hi-pot the VV to   Concur
    Labik/Dudek/Dudek                              500 V. May add special requirements
                                                   to instrumentation rack. [Reiersen]

Rogowski Coil FDR              8/9/2007    5       Need to develop a plan that permits    Concur
    Labik/Dudek/Dudek                              hi-potting of the VV without
                                                   damaging magnetic diagnostic.
                                                   [Dudek]
Welded Inner Leg Interfaces   10/18/2007       1   Perform mock-up test on MIG welding Concur
     Cole/Dudek/Perry                              head accessibility (all positions)
                                                   [Strykowsky]
Welded Inner Leg Interfaces   10/18/2007       2   Develop procedure for welding*         Concur
     Cole/Dudek/Perry                              obtain proper welding equipment
                                                   (include out of position welds) train
                                                   and qualify several welds. * Including
                                                   start/stop and inclusion from grinding
                                                   and Peening and cooling. [Perry]

Welded Inner Leg Interfaces   10/18/2007       3   A plan for inspecting MIG welds          Concur
     Cole/Dudek/Perry                              needs to be developed and qualified
                                                   [Perry]
Welded Inner Leg Interfaces   10/18/2007       4   NDT (ultrasonic testing) was used to     Concur
     Cole/Dudek/Perry                              evaluate a test weld to assess likely
                                                   flaws. This was done for the TIG weld
                                                   is there value in similarly evaluating
                                                   MIG welding also check permeability.
                                                   [Malinowski]
Welded Inner Leg Interfaces   10/18/2007       5   Make provision for in-service            Concur
     Cole/Dudek/Perry                              inspection and investigate using
                                                   ASME X1 guidance for inspection
                                                   period this may allow higher stress or
                                                   less required mark in on fracture
                                                   mechanics calculations [Titus MIT]
Welded Inner Leg Interfaces   10/18/2007       6   Starts and stops of intermittent welds   Concur
     Cole/Dudek/Perry                              should be ground to a more fatigue
                                                   friendly geometry at starts and stops.

Welded Inner Leg Interfaces   10/18/2007       7   If allowable stresses fro shim welds     Concur
     Cole/Dudek/Perry                              are being de-rated due to visual
                                                   inspections of welds, should we
                                                   inspect welds another way? [Perry]
Welded Inner Leg Interfaces   10/18/2007       8   What is the impact to the project if     Concur (should be
     Cole/Dudek/Perry                              welding solution is found not to be      considered
                                                   fully satisfactory? Risk? Is there a
                                                   reasonable backup concepts? [Labik]




    Status Date: 12/23/2004                                                                                     72
                                                                                  NCSX Engineering CHIT Tracking Log


      Design Review                                                                      Review Board
   [Cog Engr/RLM/Chair]       Rvw Date     #        Chit Finding [Originator]          Recommendation                 Project Disposition   Responsibility   Status   Due Date
Welded Inner Leg Interfaces   10/18/2007   9  The FEA model which models the         Concur (consider)
     Cole/Dudek/Perry                         outer bolt array as bonded flange to
                                              flange is now conservative with
                                              respect to inner flange shear -maybe
                                              bond thru shim & change shim shear
                                              modulus. [Titus-MIT]
Welded Inner Leg Interfaces   10/18/2007   10 The FEA model which models the         Concur (consider)
     Cole/Dudek/Perry                         outer bolt array as bonded eliminates
                                              the ability to asses the bolt loads at
                                              the ends of the flex shim section.
                                              These bolts loads were a problem for
                                              low friction and may be a problem for
                                              the flex shims which may be too
                                              compliant. [Titus-MIT]

Welded Inner Leg Interfaces   10/18/2007   11 Fatigue calculations must be             Concur
     Cole/Dudek/Perry                         completed for the shim welds [Perry]

Welded Inner Leg Interfaces   10/18/2007   12 The "Peaky weld stresses are             Concur
     Cole/Dudek/Perry                         indications of higher stresses at the
                                              weld ends that need fatigue
                                              qualification. [Titus-MIT]
Welded Inner Leg Interfaces   10/18/2007   13 If weld stress/fatigue is a problem      Concur (consider)
     Cole/Dudek/Perry                         consider putting alumina on both
                                              sides of the pucks to improve their
                                              frictional shear capacity. [Titus-MIT]

Welded Inner Leg Interfaces   10/18/2007   14 Need to release pucks that are in        Concur (FEA model
     Cole/Dudek/Perry                         tension to insure that load              should be looked at for
                                              redistribution doesn’t overstress MIG    these issues.
                                              plane pucks. Tresca stress intensity
                                              OK. In weld <31 tsi but need to
                                              check that shims are always in
                                              tension or that buckling not an issue
                                              if compression stable?
Welded Inner Leg Interfaces   10/18/2007   15 Complete the various mockups for         Concur
     Cole/Dudek/Perry                         the FDR (positions of welding, access
                                              to tighten bolts, etc). [Labik]

Welded Inner Leg Interfaces   10/18/2007   16 Wing "Chairs" should be bolted           Concur
     Cole/Dudek/Perry                         against spacer to take the bolt
                                              threads out of the cyclic load path.
                                              [Perry]
Welded Inner Leg Interfaces   10/18/2007   17 With the partial electrical break on     Concur ( should be
     Cole/Dudek/Perry                         the inboard how do you test the          considered add to
                                              outboard fasteners to ensure there       assembly plan (eddy
                                              are open? Should be processed in         current type test?
                                              sequence plan & procedure. [Dudek]

Welded Inner Leg Interfaces   10/18/2007   18 How will performance be decreased in Concur (consider)
     Cole/Dudek/Perry                         we can't be 316 LN for inboard
                                              shims? If strength is so critical any
                                              material must be tested before we
                                              use a particular piece. [Perry]




    Status Date: 12/23/2004                                                                                      73
                                                                                     NCSX Engineering CHIT Tracking Log


      Design Review                                                                            Review Board
   [Cog Engr/RLM/Chair]          Rvw Date     #        Chit Finding [Originator]             Recommendation            Project Disposition   Responsibility   Status   Due Date
Welded Inner Leg Interfaces      10/18/2007   19 Apply a substantial side load to the     Concur (consider adding
     Cole/Dudek/Perry                            segmented shims to qualify the load      to wiggle test: wiggle
                                                 transfer path more than a few            test should involved
                                                 hundred pounds. [Labik]                  loads of several
                                                                                          hundred pounds for
                                                                                          outboard shims after
                                                                                          the flanges have been
                                                                                          bolted and torqued.)

Welded Inner Leg Interfaces      10/18/2007   20 Complete detailed cost and schedule      Concur (must be done
     Cole/Dudek/Perry                            estimates and incorporate into           for this review to be
                                                 baseline plan. 1). Develop procedure     complete)
                                                 2). Buy proper welding inspection
                                                 equipment. 3). Train and qualify
                                                 several welders. 4). Execute field
                                                 work. [Perry]
Welded Inner Leg Interfaces      10/18/2007   21 PDR on 8/7 had chits related to          Concur
     Cole/Dudek/Perry                            welding (per Dudek). Have these
                                                 chits been resolved? [Perry]
Trim Coil Peer Review            11/6/2007    1 Generate a spec for the Trim Coils.       Concur
 Kalish/Heitzenroeder/Neumeyer                   Clearly stipulate the trim A.}
                                                 response, required. B}. harmonics
                                                 that can be acceptable. C.} tolerance
                                                 acceptable for performance. D.}
                                                 possible induced voltages. E.}
                                                 nominal inductances.[Ramakrishnan]

Trim Coil Peer Review            11/6/2007    2   Determine effect of mutual coupling     Concur
 Kalish/Heitzenroeder/Neumeyer                    between modular and PF coils in
                                                  terms of induced voltage which must
                                                  be bucked by trim coil powers
                                                  supplies, and which will cause ripple
                                                  in trim coil current. [Neumeyer]

Trim Coil Peer Review            11/6/2007    3   Try to find TF-the-shelf power supply   Concur
 Kalish/Heitzenroeder/Neumeyer                    solution then design coil voltage and
                                                  # turns around same. [Neumeyer]

Trim Coil Peer Review            11/6/2007    4   Design coils for 3 kV if not cut        Concur
 Kalish/Heitzenroeder/Neumeyer                    prohibitive for faster potential
                                                  response time. [Heitzenroeder]
Trim Coil Peer Review            11/6/2007    5   Making coils faster up to a point       Concur
 Kalish/Heitzenroeder/Neumeyer                    comparable to wall time would be
                                                  useful even if power supplies cannot.
                                                  [Boozer]
Trim Coil Peer Review            11/6/2007    6   Tom should look at putting a decent     Concur
 Kalish/Heitzenroeder/Neumeyer                    size coil in the midplane at the CC
                                                  interfaces for additional physics
                                                  flexibility. [Neilson]
Trim Coil Peer Review            11/6/2007    7   Set tolerance requirements              Concur
 Kalish/Heitzenroeder/Neumeyer                    economically physics probably
                                                  doesn’t require better than + 0.5 in
                                                  placement. But must be measure
                                                  with accurate metrology. [Neilson]




     Status Date: 12/23/2004                                                                                      74
                                                                                         NCSX Engineering CHIT Tracking Log


           Design Review                                                                         Review Board
       [Cog Engr/RLM/Chair]        Rvw Date     #         Chit Finding [Originator]            Recommendation                       Project Disposition              Responsibility   Status   Due Date
  Trim Coil Peer Review            11/6/2007    8   With regard to trim coils design         Concur
   Kalish/Heitzenroeder/Neumeyer                    objective (Art's slide 21) needs to
                                                    verify with self-consistent pies
                                                    calculation. Art's predicative
                                                    calculations at island size % total flux
                                                    is not self-consistent! [Pomphrey]

  Trim Coil Peer Review            11/6/2007    9  Trim coils on the midplane at the           See Chit 6
   Kalish/Heitzenroeder/Neumeyer                   bullet section may be especially
                                                   important for error field correction in
                                                   high-beta equilbrium. Find area such
                                                   a coil that could be built ?. This gives
                                                   field on plasma to a given ampere-
                                                   turns. [Boozer]
  Trim Coil Peer Review            11/6/2007    10 If the cost isn't prohibitive, it would     Concur
   Kalish/Heitzenroeder/Neumeyer                   be better in the physics to split coils
                                                   until they are roughly square.
                                                   [Boozer]
  Trim Coil Peer Review            11/6/2007    11 Compare cost of present design with         Concur
   Kalish/Heitzenroeder/Neumeyer                   two types (30% and 60º) of coil
                                                   extents to a design with 11 coils
                                                   having 30 º, extents. If cost
                                                   difference is small, extra flexibility
                                                   may be valuable. Also, multiple coils
                                                   compliant power supply matching
                                                   problem. [Neumeyer]
  Trim Coil Peer Review            11/6/2007    12 For the "split" coils it might be nice to   Concur
   Kalish/Heitzenroeder/Neumeyer                   bring out 4 instead of 2 leads, since
                                                   the coils is already split. [Gerhardt]

Kalsih/Neumeyer/ Heitzenroeder     12/14/2007   1   Verify configuration preserves         Concur                         Coils are identical. Positioning of the
                   PF Coil PDR                      stellarator symmetry i.e. bottom coils                                coils in proper configuration for
                                                    are installed rotated about machine                                   stellarator symmetry will have to be
                                                    "X" exit 180º [Brooks]                                                identified on final assembly drawings.
Kalsih/Neumeyer/ Heitzenroeder     12/14/2007   2   Calculations establishing the voltage  Concur                         All voltage and coil turns, current are
                   PF Coil PDR                      and number of turns and current                                       based on the GRD.
                                                    requirements have to be referenced
                                                    [Ramakrishnan]
Kalsih/Neumeyer/ Heitzenroeder     12/14/2007   3   Consider using a ground plane          Concur                         Ground planes are usually used for
                   PF Coil PDR                      [Neumeyer]                                                            systems >5 Kv. Availability of cryogenic
                                                                                                                          compatible ground plane is not know

Kalsih/Neumeyer/ Heitzenroeder     12/14/2007   4   Sensor loop may have noise problem                                    Similar arrangement was used for both
                   PF Coil PDR                      unless there is a shield via ground                                   modular and TF Coils diagnostic group
                                                    plane in coil or around sensor loops.                                 should determine whether this will be a
                                                    Proper designer would place sensor                                    problem in any of the coil systems.
                                                    outside of ground plane [Neumeyer]

Kalsih/Neumeyer/ Heitzenroeder     12/14/2007   5   Check calculations of turn-to-turn         Concur                     Turn to turn voltages were re-examined
                   PF Coil PDR                      voltage. [Neumeyer]                                                   by J. Chrzanowski and presented in this
                                                                                                                          FDR.
Kalsih/Neumeyer/ Heitzenroeder     12/14/2007   6   Max turn to turn voltage to the            Concur [See chit 5]        See chit #5.
                   PF Coil PDR                      specifies. [Ramakrishnan]




       Status Date: 12/23/2004                                                                                       75
                                                                                         NCSX Engineering CHIT Tracking Log


          Design Review                                                                          Review Board
       [Cog Engr/RLM/Chair]           Rvw Date     #         Chit Finding [Originator]         Recommendation                        Project Disposition                    Responsibility             Status       Due Date
Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   7   Need to establish minimum lead to     Concur                          Concur-Presented in FDR
                   PF Coil PDR                         lead and lead to ground creeping
                                                       distances for lead's to ensure safety
                                                       margin on leads. [Neumeyer]
Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   8   Need to plan to measure coil copper   Concur                          Concur-Presented in FDR
                   PF Coil PDR                         temperature to prevent flow of LN2
                                                       into warm coil. T/C's in copper not
                                                       recommended. Consider fiber optic
                                                       probe or resistance measured scheme
                                                       [Neumeyer]

Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   9  Who is responsible for coil protection   Other [See Chit 8]            See chit #8
                   PF Coil PDR                        due to thermal shock? Will this be
                                                      covered as part of WBS 5 (I&L) with
                                                      interlocks to the cryogenic system?
                                                      [Strykowsky]
Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   10 The number of thermal cycles             Concur [If not already        Number of thermal cycles does not
                   PF Coil PDR                        consideration for the design to be       given in GRD]                 effect design of PF coils. No stress
                                                      documented [Ramakrishnan]                                              issues.
Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   11 The time at test voltage should be 1     Concur                        This will be specified in coil
                   PF Coil PDR                        min to allow for charging current to                                   specifications.
                                                      the level off and not influence the
                                                      true leakage current. [Meighan]
Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   12 Coil shape should be maintained with     Concur                        SOW will include requirements for
                   PF Coil PDR                        bracing from time of VPI completed                                     shipping structure to maintain coil shape.
                                                      until coils are installed in machine
                                                      this will minimize reshaping (PF-5
                                                      and PF-6 only) [Chrzanowski]

Kalsih/Neumeyer/ Heitzenroeder        12/14/2007   13 Special stripping instructions are       Other [See Chit 12]           See chit #12.
                    PF Coil PDR                       required. [Ramakrishnan]
 Modular Coil Inboard Interface C-C    2/4/2008    1 Should consider more than on load         Concur                        Engineering will refer this question to      P.Heitzenroeder    Active
      FDR Cole/Nelson/Dudek                           case in the structural analysis.                                       Physics (Mike Z.) for consideration.
                                                      [Dudek]
 Modular Coil Inboard Interface C-C    2/4/2008    2 Does design meet GRD requirements         Concur                        The primary issue is if the bushings can     PJ Fogarty         Active as if 2.15.08
    FDR Cole/Nelson/Dudek                             for failure recover? (i.e. easy                                        be removed - prototyping efforts are
                                                      disassembly) [Dudek]                                                   underway to demonstrate feasibilty of
                                                                                                                             busihing removal.
 Modular Coil Inboard Interface C-C    2/4/2008    3   Add some filler to fill first gap     Concur                          Nomex fillers will be added to the           M. Cole            Active as if 2.15.08
    FDR Cole/Nelson/Dudek                              between carrier plate and first shim,                                 drawings to fill gaps.
                                                       it will be hard to reach after
                                                       assembly. [Viola]
 Modular Coil Inboard Interface C-C    2/4/2008    4   Need to have safety professional      Concur                          Will discuss with J. Levine                  P. Heitzenroeder   Active as if 2.15.08
    FDR Cole/Nelson/Dudek                              review access to core and what
                                                       implications are. Most likely would
                                                       be considered a confined space.
                                                       What are emergency response needs?
                                                       [Dudek]
 Modular Coil Inboard Interface C-C    2/4/2008    5   How are all shims inboard & outboard Concur                           Pucks will be held in place by Nomex    P.J. Fogarty            Active as if 2.15.08
    FDR Cole/Nelson/Dudek                              held in place? While 3 FPA's brought                                  felt and is being demonstrated to show
                                                       together? Can all outboard studs be                                   feasiblity. Stud assembly sequence will
                                                       installed before assembly or after?                                   be developed in model studies - see
                                                       [Viola]                                                               Chit 696.




        Status Date: 12/23/2004                                                                                         76
                                                                                            NCSX Engineering CHIT Tracking Log


          Design Review                                                                             Review Board
     [Cog Engr/RLM/Chair]             Rvw Date    #        Chit Finding [Originator]              Recommendation                  Project Disposition                Responsibility              Status             Due Date
 Modular Coil Inboard Interface C-C    2/4/2008   6   Show the remote operation of              Concur                  Plan to minimize no. of loose              PJ Fogarty          Active as if 2.15.08
    FDR Cole/Nelson/Dudek                             handling the remaining components -                               components; demonstrations of RH of
                                                      shims, studs, cups. [Viola]                                       remaining components are being
                                                                                                                        fabricated.
 Modular Coil Inboard Interface C-C   2/4/2008    7  Need to have a recover plan in the         Concur                  Plans for bushing removal are being        P.J. Fogarty        Active as if 2.15.08
    FDR Cole/Nelson/Dudek                            event some of the Bushnell's don't fit                             developed and will be demonstrated
                                                     or bind half way in. [Dudek]                                       via mock-ups.
 Modular Coil Inboard Interface C-C   2/4/2008    8 Relax fit-up tolerances on the upper        Concur                  Demonstration of feasibility using         PJ Fogarty          Active as if 2.15.08
    FDR Cole/Nelson/Dudek                            and lower remotely handled bushings                                current design is underway.
                                                     to make an easy remote.
                                                     [Heitzenroeder]
 Modular Coil Inboard Interface C-C   2/4/2008    9 Are assembly cost and parts                 Concur                  This is being addressed as part of the                           Active as of 2/15/08
                                                                                                                                                                   R. Strykowski / E. Perry
    FDR Cole/Nelson/Dudek                            procurement captured in latest WBS                                 OECM preparations.
                                                     7 estimate? [Neilson]
 Modular Coil Inboard Interface C-C   2/4/2008    10 The puck carrier must resist loads         Concur                  Low friction on one side of shim is being K. Freudenberg       Active as of 2/15/08
    FDR Cole/Nelson/Dudek                            that develop from different friction                               considered and additioanl analyses will
                                                     coefficients on either side of the                                 be performed to verify final
                                                     pucks. Hopefully this is small but                                 configuration.
                                                     should be quantifiable from range or
                                                     scatter in measured data. These
                                                     loads should be used to check
                                                     stresses in the carrier. [Titus]

PF Coil Final Design Review           2/22/2008   1   Field errors from non-stellarator         Concur                  A report documenting results of field      Brooks              In process
    Chrzanowski/Heitzenroeder/von                     symmetric locations of upper/lower                                error analysis is being generated by Art
                Halle                                 coil leads should be documented                                   Brooks

PF Coil Final Design Review           2/22/2008   2   Metrology should be presribed for the     Concur                  The present plan is to locate the current Chrzanowski          Upon deliverey of coils
    Chrzanowski/Heitzenroeder/von                     placement of fiducials to mark                                    centers of each PF coil using eddy
                Halle                                 current sensors                                                   current equipment. The the coil copper
                                                                                                                        surface will be located on 4 sides then
                                                                                                                        monuments placed on the outer
                                                                                                                        groundwall. These monuments will
                                                                                                                        used during installation.
PF Coil Final Design Review           2/22/2008   3   Lifting features need to be defined       Concur                  This will be provided in a PF coil critical Chrzanowski        Will be generated if coils
    Chrzanowski/Heitzenroeder/von                                                                                       lift procedure that will be generated with                     are fabricated
                Halle                                                                                                   assistance from PPPL's Lift Engineer
                                                                                                                        for handling the coils upon delivery.

PF Coil Final Design Review           2/22/2008   4   Analyze and document PF/Trim coil         Concur                  Global analysis will performed by HM       Kalish              In process
    Chrzanowski/Heitzenroeder/von                     electromagnetic loads                                             Fan of interaction of Trim coil loads on
                Halle                                                                                                   other systems.

PF Coil Final Design Review           2/22/2008   5   PF Coil interfaces need to be defined     Concur                  Most PF coil interfacing system designs Chrzanowski            On going as designs
    Chrzanowski/Heitzenroeder/von                     and documented for the following                                  have not been completed. PF Coil                               progress
                Halle                                 design details: Electrical Grounding                              inferfaces will be on going until the final
                                                      (WBS4), LN2 pressure drops and flow                               design of the interface systems is
                                                      requirements (WBS62), Coil                                        complete.
                                                      Protection requirements (WBS163),
                                                      Electrical Leads (WBS15), Warm-up
                                                      and Cool-down requirements
                                                      (WBS623)
PF Coil Final Design Review           2/22/2008   6   Document the continuous                   Concur                  Coil protection limits will be worked      Kalish              In process
    Chrzanowski/Heitzenroeder/von                     current/I^2T capability, as well as                               through Jeff Harris [ORNL] while
                Halle                                 the safety factors for I & I^T for each                           completing WBS163
                                                      PF coil




       Status Date: 12/23/2004                                                                                     77
                                                                                          NCSX Engineering CHIT Tracking Log


           Design Review                                                                            Review Board
      [Cog Engr/RLM/Chair]            Rvw Date    #        Chit Finding [Originator]              Recommendation                  Project Disposition             Responsibility              Status        Due Date
PF Coil Final Design Review           2/22/2008   7   The turn-to-turn insulation table         Concur                  This table has be updated and placed    Chrzanowski        Complete
    Chrzanowski/Heitzenroeder/von                     presented at the review should be                                 on NCSX Web site with Design Review
                Halle                                 corrected                                                         Slides

PF Coil Final Design Review           3/4/2008    8   The PF coil specification should define Concur                    Turn to turn tests shall be prescribed by Chrzanowski      Complete
    Chrzanowski/Heitzenroeder/von                     how turn-to-turn testing will be                                  coil vendor and approved by PPPL prior
                Halle                                 performed                                                         to testing.

PF Coil Final Design Review           2/22/2008   9   Allocate time to profile coil             Concur                  Upon delivery to PPPL, the PF coils will Chrzanowski       Upon delivery of coils
    Chrzanowski/Heitzenroeder/von                     dimensions upon receipt of the                                    be measured using available metrology
                Halle                                 fabricated PF coils                                               equipment to verify the coil dimensions.

PF Coil Final Design Review           2/22/2008   10 A system-wide Failure Modes and            Concur                  A global FMECA will be performed for    Heitzenroeder      TBD
    Chrzanowski/Heitzenroeder/von                    Effects Analysis (FMEA) should be                                  the entire machine including the PF
                Halle                                developed for the entire system                                    coils and structure.

Coil Protection Peer Review           2/22/2008   1   It is not clear that both                 Concur
     Rakakrishan/von Halle/Neumeyer                   machine/power systems/protection
                                                      engineers both understand and agree
                                                      to that this and should be
                                                      documented in writing before a
                                                      proper design is approved. [Hatcher]

Coil Protection Peer Review           2/22/2008   2   Current measurements using shunts         Concur
     Rakakrishan/von Halle/Neumeyer                   and control via Robicons PS may not
                                                      provide adequate precision required
                                                      precision should be specified.
                                                      [Neumeyer]
Coil Protection Peer Review           2/22/2008   3   Requirements for e-beam mapping           Concur
     Rakakrishan/von Halle/Neumeyer                   include good accuracy at reduced
                                                      current, but no feedback. The E-STAT
                                                      Robicons exhibit significant ripple at
                                                      low current, and may not be
                                                      accurately pre-programmed with the
                                                      internal shunts. [Majeski]
Coil Protection Peer Review           2/22/2008   4   Recommend redundant current               Concur
     Rakakrishan/von Halle/Neumeyer                   measurement and current related
                                                      protection in each coil circuit.
                                                      [Neumeyer]
Coil Protection Peer Review           2/22/2008   5   Need to confirm that levels if currents   Concur
     Rakakrishan/von Halle/Neumeyer                   permitted in coils by Overcurrent
                                                      protection will not violate structural
                                                      limits. Otherwise need smarter
                                                      protection [Neumeyer]

Coil Protection Peer Review           2/22/2008   6   Recommend use of combination of         Concur
     Rakakrishan/von Halle/Neumeyer                   outlet coolant measurement plus
                                                      pulse period and duration timer for
                                                      1st plasma protection against coil
                                                      overheating for PF/TF coil for modular
                                                      coils, due to indirect cooling, another
                                                      method is needed. [Neumeyer]




       Status Date: 12/23/2004                                                                                     78
                                                                                            NCSX Engineering CHIT Tracking Log


           Design Review                                                                              Review Board
       [Cog Engr/RLM/Chair]           Rvw Date    #        Chit Finding [Originator]                Recommendation        Project Disposition   Responsibility   Status   Due Date
Coil Protection Peer Review           2/22/2008   7  Rather than depend on time-based             Concur
     Rakakrishan/von Halle/Neumeyer                  protection why not do either real
                                                     measurements or situations via
                                                     hardware for some of these
                                                     protection features. [Hatcher]
Coil Protection Peer Review           2/22/2008   8 Design so coil resistance                     Concur
     Rakakrishan/von Halle/Neumeyer                  measurement system need to be
                                                     developed so that the need for
                                                     voltage, sense leads directly on the
                                                     modular coil terminals can be
                                                     accessed. [Neumeyer]
Coil Protection Peer Review           2/22/2008   9 Rating of Robicons rectifiers need to         Concur
     Rakakrishan/von Halle/Neumeyer                  be documented. Capacity of
                                                     Robicons rectifiers to supply 1st
                                                     plasma and e-beam wave forms
                                                     (voltage current, rectifier of rectifiers,
                                                     etc.) needs to be confirmed.
                                                     [Neumeyer]
Coil Protection Peer Review           2/22/2008   10 Is the resent power supply cooling           Concur
     Rakakrishan/von Halle/Neumeyer                  system for the Robicons adequate?
                                                     Are repairs needed? [Majeski]
Coil Protection Peer Review           2/22/2008   11 Need to confirm that L/R coil current        Concur
     Rakakrishan/von Halle/Neumeyer                  decay is within Robicons PS capacity
                                                     in case of fault (e.g. breaker trip)
                                                     since there is no bypass. [Neumeyer]

Coil Protection Peer Review           2/22/2008 12    Consider developing an emergency            Concur
     Rakakrishan/von Halle/Neumeyer                   ramp-down capability for the PLC
                                                      control system for use during e-beam
                                                      ramping. For example, a 10 millisec
                                                      ramp-down for 1900A will produce
                                                      Ldi/dt of 5kV on M2+143. [Majeski]

Coil Protection Peer Review           2/22/2008 13   A failure mode analysis is required to Concur
     Rakakrishan/von Halle/Neumeyer                  insure protection meets this
                                                     requirements. [Ramakrishnan]
Coil Protection Peer Review           2/22/2008   14 Please ensure that a comprehensive        Concur
     Rakakrishan/von Halle/Neumeyer                  failure mode effects analysis is
                                                     presented during the FDR. FMCA
                                                     should identify all single point failures
                                                     and mitiazation systems. Also please
                                                     send me these FMEA's so that I can
                                                     include these in the NCSX Safety
                                                     Assessment document. [Gentile]

Coil Protection Peer Review           2/22/2008   15 Consider using/installing several fiber- Concur
     Rakakrishan/von Halle/Neumeyer                  optic configured thermal-couples to
                                                     provide ability to collect real time AT
                                                     measurements for the TF and
                                                     Modular field coils. [Gentile]
Coil Protection Peer Review           2/22/2008   16 Any PLC's used should consider the       Concur
     Rakakrishan/von Halle/Neumeyer                  criticality of their application (PPE
                                                     safety equipment) and the use of
                                                     private or NCSX-public networks, and
                                                     integration with central controls.
                                                     [Sichta]




       Status Date: 12/23/2004                                                                                       79
                                                                                         NCSX Engineering CHIT Tracking Log


           Design Review                                                                           Review Board
       [Cog Engr/RLM/Chair]           Rvw Date    #        Chit Finding [Originator]             Recommendation             Project Disposition   Responsibility   Status   Due Date
Coil Protection Peer Review           2/22/2008   17 The interfaces with the NCSX Access       Concur
     Rakakrishan/von Halle/Neumeyer                  Control System and hardwired
                                                     interlock system (WBS5) should be
                                                     shown. [Sichta]
Coil Protection Peer Review           2/22/2008   18 On digital (analog signals) fiber optic   Concur
     Rakakrishan/von Halle/Neumeyer                  links, since used for protection, these
                                                     should be real-time data validity and
                                                     perhaps a fail-safe voltage to
                                                     generate a fault. [Sichta]

Coil Protection Peer Review           2/22/2008   19 Require to provide check and              Concur
     Rakakrishan/von Halle/Neumeyer                  maintain the CS pumps that one of
                                                     them is required for proper CW Flow
                                                     to the power supply. [Awad]
Coil Protection Peer Review           2/22/2008   20 Required for repair expansion joint in    Concur
     Rakakrishan/von Halle/Neumeyer                  the tower cooling heater to provide
                                                     adequate cooling through the heat
                                                     exchanger. Cost about $6000. 00
                                                     [Awad]
 Base Support Structure PDR           3/6/2008    1 Project has to define fault conditions.    Concur (RLM should
  Dahlgren/Heitzenroeder/Perry                       [Neilson]                                 define all loads that this
                                                                                               structure must support.)

 Base Support Structure PDR           3/6/2008    2   Must include loads from all possible     Concur (RLM should
  Dahlgren/Heitzenroeder/Perry                        coil faults. [Perry]                     define all loads that this
                                                                                               structure must support.)

 Base Support Structure PDR           3/6/2008    3   Base should document the interface     Concur (RLM should
  Dahlgren/Heitzenroeder/Perry                        requirements for the interface with    document the interface
                                                      the cryostat. [Perry]                  requirements for the
                                                                                             interface with the
                                                                                             cryostat)
 Base Support Structure PDR           3/6/2008    4   The support column heights may         Concur (RLM should
  Dahlgren/Heitzenroeder/Perry                        (will) need to be adjusted to meet the document the interface
                                                      cryostat thickness and cold to warm    requirements for the
                                                      transition requirements. [Brown]       interface with the
                                                                                             cryostat)
 Base Support Structure PDR           3/6/2008    5   Address thermal isolation in the       Concur (RLM should
  Dahlgren/Heitzenroeder/Perry                        requirements (SRD) and the design.     document the interface
                                                      Also load measurements. [Neilson]      requirements)
 Base Support Structure PDR           3/6/2008    6   Consider the next larger size beam to Concur
  Dahlgren/Heitzenroeder/Perry                        provide margin for future weight
                                                      increases of cryostat, diagnostics,
                                                      etc. [Heitzenroeder]
 Base Support Structure PDR           3/6/2008    7   Load requirements need to be defined Concur (RLM should
  Dahlgren/Heitzenroeder/Perry                        (including PF coils, cryostat, LN2,    define all loads that this
                                                      diagnostics, plasma facing             structure must support,
                                                      components) and then controlled (by and then establish a
                                                      a systems engineers?) [Perry]          way to control this
                                                                                             aspect of the NCSX
                                                                                             configuration.




       Status Date: 12/23/2004                                                                                         80
                                                                                      NCSX Engineering CHIT Tracking Log


       Design Review                                                                             Review Board
    [Cog Engr/RLM/Chair]          Rvw Date    #        Chit Finding [Originator]               Recommendation                         Project Disposition              Responsibility              Status   Due Date
Base Support Structure PDR         3/6/2008   8   Review the final machine weight as it     Concur (RLM should
 Dahlgren/Heitzenroeder/Perry                     may be higher than the values             define all loads that this
                                                  assumed. [Brown]                          structure must support,
                                                                                            and then establish a
                                                                                            way to control this
                                                                                            aspect of the NCSX
                                                                                            configuration.

Base Support Structure PDR        3/6/2008    9  Evaluate use of pipe instead of I-         Concur
 Dahlgren/Heitzenroeder/Perry                    beam for columns. [Perry]
Base Support Structure PDR        3/6/2008    10 Cost estimates are for 35#, but 50#        Concur
 Dahlgren/Heitzenroeder/Perry                    beams will be used to improve
                                                 margins….. Need to update cost
                                                 estimates. [Perry]
Station 5 PDR                     3/11/2008   1 Review loads while outboard support         Concur (Action: Tom
Brown/HeitzenroederChrzanowski                   is removed and two TF Coils are            Brown)
                                                 added to the assemble weight CG will
                                                 shift. [Viola]
Station 5 PDR                     3/11/2008   2 Provide a design factor of five for the     Concur (Action: Tom
Brown/HeitzenroederChrzanowski                   support system including lateral           Brown)
                                                 supports since this will be occupied
                                                 by people. [Viola]
Station 5 PDR                     3/11/2008   3 Consider using threaded rod instead         Concur (Action: Tom
Brown/HeitzenroederChrzanowski                   of jack stands under modular coils.        Brown to investigate
                                                 Are there any parts from the modular       possibility of recycling
                                                 coils (Station 1) that can be recycled?    of components)
                                                 [Dudek]
Station 5 PDR                     3/11/2008   4 Increase underneath clearance height        Concur (Action: Tom
Brown/HeitzenroederChrzanowski                   to 6' 4" [Viola]                           Brown)
Station 5 PDR                     3/11/2008   5 Use cylinder arrangement to move            Concur (Action: Tom
Brown/HeitzenroederChrzanowski                   jacks to bottom see back. Jack's           Brown)
                                                 should have locking mech on some
                                                 way to lock in position (see chit 2 for
                                                 sketch) [Connolly ]
  TrimCoils FDR                   5/6/2008    1 Before the FDR can be determined            Concur                          All complete for Coil                    Kalish             Complete
 Kalish/Heitzenroeder/von Halle                  successful the follow-up should be
                                                 reviewed, comments resolved and
                                                 incorporated, and be ready to be
                                                 signed including: Dwg's, CSpec,
                                                 SOW. [Simmons]
  TrimCoils FDR                   5/6/2008    2 What is the convective cool-down            Concur                          Calculated cool down time of 5hrs to     Kalish             Complete
 Kalish/Heitzenroeder/von Halle                  time and warm-up time? Will it be                                          88K or 6 hrs to 83K through convection
                                                 adequate to meet the GRD                                                   with LN2 atmosphere
                                                 requirements of 6 hour cool-
                                                 down/up? [Zarnstorff]
  TrimCoils FDR                   5/6/2008    3 Need to analyze the effect if trim coil     Concur                          Analysis by H Fan is ongoing             H Fan              Ongoing
 Kalish/Heitzenroeder/von Halle                  loads in the other systems. [Reiersen]

  TrimCoils FDR                   5/6/2008    4   Your welding temperature of 90º is        Concur                          Proceeding with weld testing. Further    Kalish             Ongoing
 Kalish/Heitzenroeder/von Halle                   close to the cure temperature of 125º                                     testing will be used to develop final
                                                  C. Consider MIG process to reduce                                         assemlbly procedure
                                                  heat input further (factor of 3) re-run
                                                  trial. [Viola]




     Status Date: 12/23/2004                                                                                           81
                                                                                             NCSX Engineering CHIT Tracking Log


          Design Review                                                                            Review Board
       [Cog Engr/RLM/Chair]            Rvw Date    #          Chit Finding [Originator]          Recommendation                        Project Disposition                 Responsibility              Status   Due Date
    TrimCoils FDR                       5/6/2008   5   Is there a FMEA needed for the trim     Concur                      FMEA was not required by the RLM for          Kalish, Raki       Ongoing
   Kalish/Heitzenroeder/von Halle                      coils? If not a formal ? Shouldn't we                               the coil itself. FMEA for the coil system
                                                       at least consider what fault modes                                  will be required in the future to drive the
                                                       there might be? If trim coils don't                                 coil protection system design
                                                       work, can NCSX achieve?
                                                       Performances? [Simmons]
    TrimCoils FDR                      5/6/2008    6   The area shown in the typical trim      Concur                      Transition geometry has been                 Kalish              Complete
   Kalish/Heitzenroeder/von Halle                      coil cross-section doesn't include the                              examined. Transitions are now shown
                                                       required extra space at the end of a                                on the coil drawings. The coil
                                                       row of turns; i.e. ten turns                                        crossection need not be changed.
                                                       require>eleven conductor spaces.                                    About 1.5 inches of copper are lost per
                                                       Nor were details shown concerning                                   layer to layer and turn to turn transition x
                                                       cross-over’s between layers. The coil                               20 transitions + the final turn minus
                                                       cross-section will need to increase or                              about 10 inches is lost to get the end
                                                                                                                           points back to where they need to be.
                                                       the turn count be reduced (more than
                                                                                                                           Resistance updated in specification a
                                                       one turn will be lost) to correct these
                                                                                                                           decrease of 9/10ths of a percent
                                                       deficiencies. There appears to be
                                                       sufficient margin in the system amp-
                                                       turn rating to allow the elimination of
                                                       some turns. It may also be possible
                                                       to reduce the thickness of the support
                                                       channel closure bar to make more
                                                       room for winding turns. If a stock
                                                       plate thickness is used to produce the
                                                       closure bars (via water jet cutting)
                                                       perhaps the plate can be
                                                       economically reduced in thickness by
                                                       .091" (the unit cell size of the
                                                       insulated conductor) by Blanchard
                                                       grinding prior to the water jet cutting
                                                       operation.[Sims]


    TrimCoils FDR                      5/6/2008    7   For the mounting bracket bolts I        Concur                      Consistent with the method used for           Kalish             Design Complete
   Kalish/Heitzenroeder/von Halle                      recommend using a nut with a                                        Modular Coil hardware a piece of
                                                       prevailing topque non-metallis                                      stainless .005" shim material will be
                                                       locking feature to preclude loosening                               spot welded between the nut and the
                                                       during thermal and mechanical load                                  end of the bolt
                                                       cycling. The below link is to one
                                                       sourse that makes silver plated (to
                                                       reduce thread galling) A286 nuts of
                                                       this construction suitable for
                                                       cryogenic service. [Sims]

Trim Coil Preliminary design Review    3/24/2008   8   (1) Simulate Induced Voltages. (2)      Concur. Furnish this                                                      Kalish
            Kalish/Heitzenroeder/von                   Provide Inductance Matrix. (3)          information to WBS4
                 Halle                                 Calculate resistances of coils.
                                                       Ramakrishanan
Trim Coil Preliminary design Review    3/24/2008   9   Establish by calculations that the      Concur. See Chit #8                                                       Kalish
            Kalish/Heitzenroeder/von                   stipulated time response is
                 Halle                                 achievable with the calculated coil
                                                       parameters. Ramakrishnan




       Status Date: 12/23/2004                                                                                        82
                                                                                           NCSX Engineering CHIT Tracking Log


           Design Review                                                                             Review Board
      [Cog Engr/RLM/Chair]             Rvw Date    #        Chit Finding [Originator]               Recommendation                       Project Disposition              Responsibility              Status   Due Date
Trim Coil Preliminary design Review    3/24/2008   10 Some level of simulation of proposed       Concur. Simulations                                                    Kalish
            Kalish/Heitzenroeder/von                  scenarios that include the trim coils      need to be repeated
                 Halle                                needs to be executed. This is needed       once final configurations
                                                      to ensure that power supply specs          and parameters are
                                                      are realistic and/or sufficient. Hatcher   established.


Trim Coil Preliminary design Review    3/24/2008   11 Don't put thermocouples on every           Concur. These details                                                  Kalish
            Kalish/Heitzenroeder/von                  trim coil. It does not seem necessary      need to be included in
                 Halle                                given your thermal margin. Consider        the Trim Coil SRD and
                                                      putting thermocouples on 1 or 2            drawings.
                                                      coils/ half-period to sense overall
                                                      cryostat temperature distribution.
                                                      Zarnstorff
Trim Coil Preliminary design Review    3/24/2008   12 Add G-10 or stainless steel strips         Concur. Coil corner                                                    Kalish
            Kalish/Heitzenroeder/von                  strips between support angle and coil      details will be addressed
                 Halle                                to avoid corner raduis interference.       in final design drawings
                                                      Heitzenroeder
Trim Coil Preliminary design Review    3/24/2008   13 Consider solid (thicker) solid bar         Concur. Will consider                                                  Kalish
            Kalish/Heitzenroeder/von                  stock as Stiffening Plate. Consider
                 Halle                                Inconel 601 Bar Stock. Dahlgren
Trim Coil Preliminary design Review    3/24/2008   14 Consider aluminum as material for          Concur. Will consider                                                  Kalish
            Kalish/Heitzenroeder/von                  structure. Insulate the one cover
                 Halle                                structure that bridges the gap in the
                                                      base structure to prevent an eddy
                                                      current loop. Use a single Kapton
                                                      layer for insulation. Zarstorff

Trim Coil Preliminary design Review    3/24/2008   15 Cutting the support bases from plate   Concur. Will consider                                                      Kalish
            Kalish/Heitzenroeder/von                  will generate lots of waste. Consider
                 Halle                                casting the bases, or fabricating them
                                                      some other way. Zarstorff

Trim Coil Preliminary design Review    3/24/2008   16 Consider a 10 X 12 turn coil               Concur. Will consider                                                  Kalish
            Kalish/Heitzenroeder/von                  configuration to bring both leads out
                 Halle                                at the top (or bottom). Dahlgren

Trim Coil Preliminary design Review    3/24/2008   17 Consider 120 turns so that the leads       Concur. Will consider                                                  Kalish
            Kalish/Heitzenroeder/von                  are on one side. Ramakrishnan
                 Halle
Trim Coil Preliminary design Review    3/24/2008   18 Can the casings of multiple coils be  Concur. See Chit #3                                                         Kalish
            Kalish/Heitzenroeder/von                  made continuous such that external
                 Halle                                ground wires be brought (out) only at
                                                      controlled places for the whole
                                                      system? Ramakrishnan
    TrimCoils FDR                      5/6/2008    1 Before the FDR can be determined       Concur                             All complete for Coil                    Kalish             Complete
   Kalish/Heitzenroeder/von Halle                     successful the follow-up should be
                                                      reviewed, comments resolved and
                                                      incorporated, and be ready to be
                                                      signed including: Dwg's, CSpec,
                                                      SOW. [Simmons]
    TrimCoils FDR                      5/6/2008    2 What is the convective cool-down       Concur                             Calculated cool down time of 5hrs to     Kalish             Complete
   Kalish/Heitzenroeder/von Halle                     time and warm-up time? Will it be                                        88K or 6 hrs to 83K through convection
                                                      adequate to meet the GRD                                                 with LN2 atmosphere
                                                      requirements of 6 hour cool-
                                                      down/up? [Zarnstorff]




       Status Date: 12/23/2004                                                                                            83
                                                                                         NCSX Engineering CHIT Tracking Log


          Design Review                                                                          Review Board
       [Cog Engr/RLM/Chair]          Rvw Date    #        Chit Finding [Originator]            Recommendation                     Project Disposition                   Responsibility              Status   Due Date
    TrimCoils FDR                     5/6/2008   3   Need to analyze the effect if trim coil Concur                     Analysis by H Fan is ongoing                  H Fan              Ongoing
   Kalish/Heitzenroeder/von Halle                    loads in the other systems. [Reiersen]

    TrimCoils FDR                    5/6/2008    4   Your welding temperature of 90º is        Concur                   Proceeding with weld testing. Further         Kalish             Ongoing
   Kalish/Heitzenroeder/von Halle                    close to the cure temperature of 125º                              testing will be used to develop final
                                                     C. Consider MIG process to reduce                                  assemlbly procedure
                                                     heat input further (factor of 3) re-run
                                                     trial. [Viola]
    TrimCoils FDR                    5/6/2008    5   Is there a FMEA needed for the trim       Concur                   FMEA was not required by the RLM for          Kalish, Raki       Ongoing
   Kalish/Heitzenroeder/von Halle                    coils? If not a formal ? Shouldn't we                              the coil itself. FMEA for the coil system
                                                     at least consider what fault modes                                 will be required in the future to drive the
                                                     there might be? If trim coils don't                                coil protection system design
                                                     work, can NCSX achieve?
                                                     Performances? [Simmons]
    TrimCoils FDR                    5/6/2008    6   The area shown in the typical trim        Concur                   Transition geometry has been                 Kalish              Complete
   Kalish/Heitzenroeder/von Halle                    coil cross-section doesn't include the                             examined. Transitions are now shown
                                                     required extra space at the end of a                               on the coil drawings. The coil
                                                     row of turns; i.e. ten turns                                       crossection need not be changed.
                                                     require>eleven conductor spaces.                                   About 1.5 inches of copper are lost per
                                                     Nor were details shown concerning                                  layer to layer and turn to turn transition x
                                                     cross-over’s between layers. The coil                              20 transitions + the final turn minus
                                                     cross-section will need to increase or                             about 10 inches is lost to get the end
                                                                                                                        points back to where they need to be.
                                                     the turn count be reduced (more than
                                                                                                                        Resistance updated in specification a
                                                     one turn will be lost) to correct these
                                                                                                                        decrease of 9/10ths of a percent
                                                     deficiencies. There appears to be
                                                     sufficient margin in the system amp-
                                                     turn rating to allow the elimination of
                                                     some turns. It may also be possible
                                                     to reduce the thickness of the support
                                                     channel closure bar to make more
                                                     room for winding turns. If a stock
                                                     plate thickness is used to produce the
                                                     closure bars (via water jet cutting)
                                                     perhaps the plate can be
                                                     economically reduced in thickness by
    TrimCoils FDR                    5/6/2008    7   .091" (the unit cell size of bolts I
                                                     For the mounting bracket the              Concur                   Consistent with the method used for           Kalish             Design Complete
   Kalish/Heitzenroeder/von Halle                    recommend using a nut with a                                       Modular Coil hardware a piece of
                                                     prevailing topque non-metallis                                     stainless .005" shim material will be
                                                     locking feature to preclude loosening                              spot welded between the nut and the
                                                     during thermal and mechanical load                                 end of the bolt
                                                     cycling. The below link is to one
                                                     sourse that makes silver plated (to
                                                     reduce thread galling) A286 nuts of
                                                     this construction suitable for
                                                     cryogenic service. [Sims]

Base Support Structure FDR           5/27/2008   1   Taylor your anchor sized to               Concur {Fred Dahlgren                                                  Fred Dahlgren
                                                     accommodate real needs/loads              to verify where small
Dahlgren/Heitzenroeder/Chrzanowski                   maximize use of 1/2" HDI size holes       anchors can be
                                                     in to steel to drill through. [Viola]     initialized.
Base Support Structure FDR           5/27/2008   2   Have all fault conditions been            Concur                                                                 NCSX Project &
                                                     reviewed for the support base                                                                                    Fred Dahlgren
Dahlgren/Heitzenroeder/Chrzanowski                   structure. [McManamy]




       Status Date: 12/23/2004                                                                                     84
                                                                                           NCSX Engineering CHIT Tracking Log


         Design Review                                                                              Review Board
      [Cog Engr/RLM/Chair]           Rvw Date    #        Chit Finding [Originator]               Recommendation              Project Disposition     Responsibility   Status   Due Date
Base Support Structure FDR           5/27/2008   3   Check if any interferences with            Concur                                              Tom Brown & Fred
                                                     diagnostics for inboard bracing.                                                               Dahlgren
Dahlgren/Heitzenroeder/Chrzanowski                   [Brown]

Base Support Structure FDR           5/27/2008   4   All bolts and welding shall be             Concur                                              Fred Dahlgren
                                                     checked. Bolts should also be locked
Dahlgren/Heitzenroeder/Chrzanowski                   in position. [Fan]

 Goranson/Heitzenroeder/Blanchard    6/5/2008    1   What is the material of the                Concur [out of scope
                                                     thermocouple mounts? If it is              but should be referred
                                                     thermally conductive, it may be            to WBS 14.]
                                                     difficult to tell if flow in one tube is
                                                     obstructed due to the entire bracket
                                                     being at LN2 temp. [Raftopoulos]

 Goranson/Heitzenroeder/Blanchard    6/5/2008    2   Verify that the I" long G10 insulators     Concur [D. Gwinn notes
                                                     for the hose connections provide a         at MIT. That the
                                                     great enough distance for the 1" long      standoff should be
                                                     column of LN2 to standoff the              adquate. Filtering
                                                     required voltage. Does experience          important to eliminate
                                                     with LN2 indicate impurities cause         inpurities. ]
                                                     problems? [Kalish]
 Goranson/Heitzenroeder/Blanchard    6/5/2008    3   Consider different type for control        Concur
                                                     valve. Ball valves generally do not
                                                     provide fine control. [ Kalish]
 Goranson/Heitzenroeder/Blanchard    6/5/2008    4   Check the interface with WBS 5. Do         Concur
                                                     they include the patch panel, signal
                                                     conditioning electronics and controls
                                                     as assumed. [Nelison]
 Goranson/Heitzenroeder/Blanchard    6/5/2008    5   The requirements to handle chilled         Concur [This will be part
                                                     gas during new cooldown/warm-up            of the cryo sytem
                                                     will have to be addressed. What is         design activity.]
                                                     the impact on the design cost and
                                                     schedule. [Neilson]




       Status Date: 12/23/2004                                                                                           85
                                                                                          NCSX Engineering CHIT Tracking Log


        Design Review                                                                            Review Board
     [Cog Engr/RLM/Chair]          Rvw Date    #          Chit Finding [Originator]            Recommendation        Project Disposition   Responsibility   Status   Due Date
Goranson/Heitzenroeder/Blanchard    6/5/2008   6   There is a resistive connection to        Concur
                                                   ground on the LN2 hoses. We have
                                                   used similar systems in the past to
                                                   provide a reference potential to
                                                   components or systems which might
                                                   accidentally short to coil windings or
                                                   to structure and thus cause either
                                                   large fault current or significan
                                                   ground loop currents to flow through
                                                   a hard ground. This was done when
                                                   there was either significant
                                                   probability of such short circuit or
                                                   likely signficant damage as a
                                                   consequence. The status of the
                                                   ground path was then monitored to
                                                   allow us to detect a fualt, while the
                                                   resistor prevented excessive currents
                                                   in the event of a fault. I recommend
                                                   that you consider monitoring the
                                                   status of the resistance to ground.
                                                   During the review, I suggested that
                                                   you might want to have separate
                                                   grounding resistor paths for each
                                                   hose; however, I feel that this is less
                                                   important than the recommendation
                                                   of monitoring. While int would help
                                                   in diagnosing a ground fault, you
                                                   would have acccess to the ground
                                                   connections when you went into the
                                                   cryostat to effect a repair, so
                                                   diagnosis wouldn't be too difficult
                                                   anyway. [Gwinn]
Goranson/Heitzenroeder/Blanchard   6/5/2008    7   You should analyze the pressure           Concur
                                                   surge and consequent flow surge
                                                   which might occur if a coil is
                                                   energized to it's hardware limit by
                                                   accident while the cooling passage is
                                                   filled with LN2. Adequate pressure
                                                   relief capacity should be installed to
                                                   prevent damage to the coil or to the
                                                   cooling passage. It may be
                                                   appropriate to purge the coil cooling
                                                   passage with GN2 prior to enabling
                                                   the power systems for a power pulse
                                                   if the analysis indicated that you
                                                   cannot prevent damage using a
                                                   reliable pressure relief system. We
                                                   do the latter on CMOD because the
                                                   cooling passages are not designed to
                                                   take much pressure. [Gwinn]

Goranson/Heitzenroeder/Blanchard   6/5/2008    8   Determine whether B31.3 applies           Concur
                                                   [Raftopoulos]
Goranson/Heitzenroeder/Blanchard   6/5/2008    9   More work is needed to determine          Concur
                                                   strain relief spacing, details, etc.
                                                   [Rempetz]




      Status Date: 12/23/2004                                                                                   86
                                                                                   NCSX Engineering CHIT Tracking Log


        Design Review                                                                        Review Board
     [Cog Engr/RLM/Chair]          Rvw Date    #        Chit Finding [Originator]          Recommendation           Project Disposition   Responsibility   Status   Due Date
Goranson/Heitzenroeder/Blanchard    6/5/2008   10 Consider reducing (or eliminating)     Concur
                                                  the input side thermocouples. Output
                                                  TC may provide enough information.
                                                  [Raftopoulos]
Goranson/Heitzenroeder/Blanchard   6/5/2008    11 Care must be taken to assure brazes    Concur [ it is
                                                  are clean. Minimize number of braze    recommended that
                                                  joints. [Klebaner]                     braze joints be
                                                                                         minimized where
                                                                                         possible and that a
                                                                                         thorough brazing
                                                                                         procedure be written to
                                                                                         avoid contamination.]




      Status Date: 12/23/2004                                                                                  87

				
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