INSULATION SPECIFICATION AND INSTALLATION GUIDE DYPLAST by bzh37299

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									                       DYPLAST PRODUCTS, LLC
                      ®
         ISO-C1 POLYISOCYANURATE RIGID FOAM INSULATION
               SPECIFICATION AND INSTALLATION GUIDE

SCOPE: This Specification and Installation Guide Provides Recommended
Materials and Installation Practices With the Application of ISO-C1 Foam
Insulation Manufactured by Dyplast Products, LLC.

Physical Characteristics of ISO-C1® Foam Insulation:
              ISO-C1® may insulate systems operating from – 297F to + 300F (- 183C to + 149C).
              Free of CFC and HCFC blowing agents.
              Excellent water vapor absorption properties (0.24%).
              >95% closed cell content
              Excellent fire resistance. Meets Class 1 or better flame spread and smoke density rating per ASTM E-
               84 (NFPA 255).
              ISO-C1® can be fabricated to any size and configuration; for sweated, screwed or welded pipe fittings.
              ISO-C1® can be applied with FSK, ASJ and foil facings.
              ISO-C1® meets or exceeds the requirements according to ASTM C591.
              Aged thermal resistance is R=5.6 at 1 inch thick per ASTM C518 (k=0.18) with the product
               conditioned for 6 months at 70-75F and 45-55% RH prior to testing.
              ISO-C1® has high compressive strength, is light weight and easy to install.

Limitations and Disclaimer of Warranties and Liabilities
Important: The statements expressed on these pages are the general recommendations for the application of the
products as outlined, and written for the interpretation and application by an experienced contractor. Any deviation
from these recommended procedures shall be at the sole risk of the installers. Failure to follow these instructions may
result in serious damage to the application and life of this roofing product, resulting in the termination of any warranty,
expressed or implied. Characteristics, properties, performance of materials, and application specifications herein
described are based on data obtained under controlled conditions.

Information is supplied upon the condition that the persons receiving same will make their own determination as to its
suitability for their purposes and the reasonableness of the recommendations under the actual installation
circumstances. Dyplast Products makes no implied warranties of any type, including without limitation, any warrant of
merchantability or fitness of purpose. In no event will Dyplast Products be responsible for damages of any nature
whatsoever resulting from the use of or reliance upon this information or the product to which information refers. No
agent, sales representative, or employee is empowered to change, alter, or amend this provision, unless approved in
writing by a duly authorized officer of Dyplast Products.




Rev 04.01.04                                      Page 1 of 20
                                  Table of Contents
       Section                                                                         Page
1.0 General Requirements ……………………………………………………… …………………..3

2.0 Cold Pipe –100F to + 70F (-73C to + 21C)……………………………………………………….4

3.0 Indoor and Non-Abuse Pipe Insulation System 0F to + 300F (-18C to +149C) …………………5

4.0 Warm and Hot Pipe +70F to 300F (+21C to +149C)……………………………………………..6

5.0 Cold Equipment –100F to +70F (- 73C to +21C)…………………………………..…..................7

6.0 Warm and Hot Equipment +70F to 300F (+21C to +149C)………………………………………9

7.0 HVAC and Process Duct Insulation System 0F to +300F (-18C to +149C)……………………..10

8.0 Expansion and Contraction Joints……………………………………. ………………………….11

9.0 Insulation Weather Barriers………………………………………..……………………………...11

10.0 Coatings to Prevent Corrosion Under Insulation………………………………………………...16

11.0 Insulation Materials and Accessories…………….………………………………..……………..17

12.0 Horizontal Pipe Supported by Hangers…………………………………………………………..19




                                    Page 2of 20                         Rev 04.01.04
1.0 General Requirements

     1.1    All insulation and insulation materials must be stored in a cool, dry location,
            protected from the weather before and during application.
     1.2    Piping, ducts and equipment shall have all welding completed and shall be
            hydrostatic or pneumatic tested prior to application of the insulation.
     1.3    Surfaces to be insulated shall be free of all grease, oil, loose scale and foreign
            matter and shall be dry and free of frost.
     1.4    The Insulation Contractor shall not perform any welding on pipe, ducts and
            equipment unless a responsible person gives specific approval for the task.
     1.5    It is the responsibility of the Insulation Contractor to determine sufficient supports.
     1.6    Should there be a conflict between this Specification Guide and the insulation
            material manufacturer‟s recommendation, follow the manufacturer‟s
            recommendation.
     1.7    Consideration should be given by the responsible Engineer to coat the substrate for
            corrosion protection prior to insulating in areas where the insulation can possibly
            get wet. A general rule would be to coat the critical piping and equipment which
            may effect the operation of a process should the system be required to be shut down
            over an extended period of time. A Shop primer is not a suitable coating for
            corrosion protection. See Section 10 for a recommended coating system.
     1.8    Where a coating system on a surface is to be insulated, dry time shall be allotted per
            the coating manufacturer‟s recommendation prior to applying the insulation.
     1.9    All flanges on pipe, ducts and equipment and all valves to the packing gland shall
            be insulated with the same insulation material and thickness as applied to the pipe
            or equipment unless specifically indicated otherwise.
     1.10   On bolted flanges, the permanent insulation on pipe and equipment shall terminate
            1 inch plus a bolt length from the flange to facilitate bolt removal unless the flange
            location prevents this spacing.
     1.11   Where frequent removal of insulation is required on flanges and valves
            consideration should be given to a removable/reusable cover design.
     1.12   When additional layers of ISO-C1 insulation is required, it shall be applied in the
            same manner as the first layer with circumferential and longitudinal joints staggered
            between joints of the preceding layers, so that no two joints coincide.
     1.13   All joints of ISO-C1 shall be tightly butted. Any damaged insulation that may
            create voids shall be replaced with new insulation. Filler material is not acceptable.
     1.14   Each pipe shall be insulated as a single unit. Adjacent lines shall not be enclosed
            with a common insulation jacket.
     1.15   At the end of each work-day, the Insulation Contractor shall be responsible to
            protect all exposed insulation from the weather. The cover must be vented so as to
            prevent condensation from forming under the cover. Insulation that becomes wet
            from inclement weather shall be replaced by the Insulation Contractor at his cost to
            the Owner.
     1.16   It is the responsibility of the Insulation Contractor to clean up any debris or loose
            insulation materials at the end of each work day.



                                       Page 3of 20                             Rev 04.01.04
      1.17 All dual-temperature systems shall have double layer insulation. A dual-
           temperature system is defined as a system that may operate above and below 70F
           (21C). The cold insulation application shall be followed and the insulation thickness
           shall be determined by the greatest thickness for the hot or cold temperature limit.

2.0 Cold Pipe - 100F to + 70F (- 73C to + 21C)
      2.1  For operating temperatures below – 100F (- 73C) contact Dyplast Products, LLC.
           since special design applications may be required.
      2.2 It is recommended that all piping systems operating at 0F (- 18C) and below
           incorporate a double layer insulation system.
      2.3 Elbow insulation covers shall be routed from ISO-C1 insulation to the same
           thickness as the pipe insulation. Where double layer pipe insulation is specified, the
           fabricator or the insulation Contractor shall cement a minimum 1 inch long
           extended leg at both ends of the ell cover. The extended legs shall fit snugly over
           the inner layer of insulation
      2.4 The insulation thickness is usually determined by control of condensation on the
           surface of the insulation finish. A finish with a high emissivity such as painted
           metal, PVC or ASJ is recommended. This consideration may reduce the required
           insulation thickness.
      2.5 Secure the insulation staggered half sections to the pipe with filament reinforced
           tape on 9 inch centers. Overwrap the tape by 25%. Do not apply any tape to the
           bare pipe. The tape adhesive may contain compounds that could seriously corrode
           the pipe. Where the insulation O.D. is greater than 18 inches use ½ inch stainless
           steel bands and seals on 9 inch centers. Install the bands on the outer layer only on
           multi-layer insulation systems.
      2.6 Where single layer ISO-C1 insulation is applied, seal the butt joints completely with
           a non-setting sealer. Tightly butt the joints together.
      2.7 Where multi layer ISO-C1 insulation is applied, seal the butt joints only on the
           outer layer completely with non-setting sealer. Tightly butt the joints together.
      2.8 Where the pipe insulation terminates, such as, at valves and flanges, seal the
           termination by applying two coats of a vapor retarder mastic, with an open weave
           glass fiber reinforcing cloth between the coats. The total dry film thickness shall be
           per the mastic manufacturer recommendation. The vapor retarder mastic system
           shall cover over the exposed insulation and onto the bare pipe 1 inch min. Continue
           the mastic over the insulation O.D. a 2 inch min. from the edge. Cover the mastic
           on the insulation O.D. with a field applied vapor retarder sheet material.
      2.9 Valves and flanges shall be insulated to the same thickness as the pipe insulation
           using enlarged pipe insulation. The valve and flange covers shall extend over the
           pipe insulation equal to the thickness of the pipe insulation or a minimum 2 inches.
           Fabricate the valve and flange covers using joint adhesive. Pack voids under the
           cover with fiberglass blanket insulation. Coat the insulation with a vapor retarder
           mastic system. (See paragraph 2.8).
      2.10 It is recommended to apply a sheet type vapor retarder over pipe insulation, rather
           than applying a mastic system. The sheet material usually has a better perm rating,
           improves continuity and is easier to apply.


                                      Page 4of 20                             Rev 04.01.04
     2.11 Most vapor retarder sheeting comes in rolls 3 feet wide and can be precut to wrap
          around the pipe insulation. All seams shall overlap a minimum of 2 inches and
          sealed with matching tape or with self-adhesive when the release paper is removed.
     2.12 Elbows and irregular shapes that would be difficult to cover with a sheet material
          shall be coated with vapor retarder mastic as described in paragraph 2.8.
     2.13 On new installations, pipe supports shall be outside the insulation system. The use
          of insulation saddles is required to distribute the load. See the section on insulation
          supports. Install vapor stops using non-setting joint sealer where the support is
          directly attached to the pipe.
     2.14 Insulate all hanger rods and metal protrusions through the insulation system to the
          same thickness as the pipe insulation over a length at least three times this
          thickness.
     2.15 To protect to the vapor retarder, install a jacket for weather and or mechanical abuse
          protection. See the Section on Finishing and Jacketing.

3.0 Indoor and Non-Abuse Insulation System 0F to +300F (- 18C to + 149C)
     3.1   This Specification is for application indoors where there is no mechanical abuse to
           the insulation finish such as supporting the top end of ladders and in dry areas
     3.2   Specify ISO-C1 with factory applied, Self-sealing, ASJ finish. ASJ “All Service
           Jacket,” is basically a foil, scrim, kraft paper lamination. This finish must be
           handled with care. Wrinkling, creasing or cutting must be avoided in order for this
           finish to perform as a vapor retarder.
     3.3   On systems operating below 70F (+21C) butter the circumferential and longitudinal
           joint with a non-setting joint sealer. At pipe insulation terminations, such as at
           flanges and valves, seal exposed insulation with two coats of a vapor retarder
           mastic and open weave glass fiber reinforcing cloth. The total dry thickness of the
           mastic shall be per the mastic manufacturer‟s recommendation. Apply the mastic
           and cloth onto the pipe a 1 inch min. and a min. 2 inches past the edge over the ASJ
           finish. On systems operating below 70(+21C), apply an acrylic breathing type
           mastic in the same manner.
     3.4   The two-piece pipe section of insulation shall be aligned properly on the pipe and
           tightly butted to the adjacent section.
     3.5   The ASJ surface shall be dry, clean and free on dust, grease or oil. The temperature
           should be above 40F (+4C). Remove the release paper from the pressure sensitive
           tape on the longitudinal flap and firmly wipe the surface with a nylon squeegee.
           Center the 3 inch wide matching butt straps over the circumferential seam. Remove
           the release paper, exposing the adhesive and wrap the strap over the seam while
           firmly applying pressure with the squeegee. Any wrinkles or creases in the tape will
           no be acceptable.
     3.6   Elbows shall be insulated with routed ISO-C1 insulation covers to the same
           thickness as the pipe insulation.
     3.7   After the pipe and ell insulation is in place, cover the ell with a one-piece PVC
           fitting cover. The PVC should be minimum 0.020 inch thick. Seal fitting cover
           seam with a continuous bead of solvent adhesive. Where the PVC cover extends



                                      Page 5of 20                            Rev 04.01.04
          over the pipe ASJ finish, wrap the seam with 0.010 inch thick by 2 inches wide
          PVC tape. Do not stretch the tape and apply with 25% overwrap.
     3.8 Valves and flanges shall be insulated to the same thickness as the pipe insulation
          using enlarged pipe insulation with the ASJ finish. The valve and flange covers
          shall extend over the pipe insulation equal to the thickness of the pipe insulation or
          a minimum of 2 inches. Cover the exposed insulation with a mastic system as
          indicated in paragraph 3.3. Where the operating temperature is below 70F (+21C),
          pack the voids under the valve and flange covers with fiberglass blanket insulation.
     3.9 Where the insulation system is operating below 70F (+21C), for new piping and
          where possible, the pipe supports shall be outside the insulation system. Insulation
          saddles are required to distribute the load so as to prevent crushing the insulation.
          See section on Insulation supports.
     3.10 Where the insulation system is operating below 70F (+21C), insulate all metal parts
          such as hanger rods that protrude through the insulation to the same thickness as the
          piping over a length at least three times this thickness.
     3.11 Staples shall NOT be used to secure this finish. For additional securing of the
          insulation system it is recommended to apply butt straps on 9 inch centers over the
          ASJ jacket.
     3.12 Final inspection is required, especially on systems operating below 70F (+21C).
          Any damage to the ASJ jacket such as cuts or wrinkles shall be sealed with
          matching tape applied with a squeegee.

4.0 Warm and Hot Pipe + 70F To 300F (+21C To +149C)
     4.1   ISO-C1 foam insulation may experience a discoloration on the inside surface where
           it is directly exposed to the pipe surface when the operating temperature is
           constantly in the 300F (149C) range. This discoloration does not affect the
           performance of the insulation.
     4.2   ISO-C1 foam insulation shall be applied using two half sections to the largest
           commercially available diameter. For larger sizes use curved segments.
     4.3   Begin installing the insulation sections on the pipe with a full length section and a
           half length section. The longitudinal joints shall be at 9 o‟clock and 3 o‟clock.
     4.4   Secure the insulation sections with filament reinforced pressure sensitive tape on 9
           inch centers. Overwrap the tape by 25%. Do not apply the tape to the bare pipe. The
           tape may contain compounds that could seriously corrode the pipe. Where the
           insulation O.D. is greater than 18 inches use ½ inch wide stainless steel bands and
           seals on 9 inch centers.
     4.5   Elbow insulation covers shall be routed from ISO-C1 insulation to the same
           thickness as the pipe insulation. Where it is not possible to use commercially routed
           insulation covers, fabricate the covers using clean cuts and miter counts in
           accordance with ASTM C450. Secure the half-sectional miters with insulation
           adhesive and rasp the heal of the miters to accommodate installation of the outer
           covers.
     4.6   Where the pipe insulation terminates, such as, at valves and flanges, seal the
           exposed insulation by applying two coats of a acrylic breathing mastic, with open
           weave glass fiber reinforcing cloth between the coats. The total dry film thickness


                                      Page 6of 20                            Rev 04.01.04
           shall be per the mastic manufacturer recommendation. The mastic system shall
           cover onto the bare pipe 1 inch min. and extend over the insulation O.D. a 2 inch
           min. from the edge.
     4.7   Valves and flanges shall be insulated to the same thickness as the pipe insulation
           using enlarged pipe insulation. The valve and flange covers shall extend over the
           pipe insulation equal in thickness to the pipe insulation or a minimum 2 inches.
           Fabricate the covers using a high temperature joint adhesive. When the owner
           request removable/reusable covers, fabricate them in two pieces with longitudinal
           seams.
     4.8   Where the pipe support is directly on the pipe, such as with a clevis type hanger,
           insulate the hanger in the same manner as a flange.
     4.9   On vertical piping, to prevent the insulation from sliding down the pipe, install
           insulation support clamps at the bottom of the vertical run and above flanges with a
           recommended spacing of 1 inch plus a bolt length. The clamps are not necessary
           where the field has provided support tabs welded to the pipe.

5.0 Cold Equipment (Vessels) – 100F To + 70F (-73C To +21C)

     5.1   For operating temperatures below – 100F (-73C) contact Dyplast Products, LLC.
           since special design applications may be required.
     5.2   It is recommended that all equipment and vessels 24 inches in diameter and less,
           operating at 0F (-18C) and below, have a double layer insulation system. For
           equipment and vessels greater than 24 inches in diameter, operating below 30F (-
           2C), should have a double layer insulation system.
     5.3   ISO-C1 foam insulation is available in 4 feet by 8 feet sheets. With insulation
           thickness up to 1 ½ inch thick, the sheet is flexible enough to be wrapped around a
           vessel 12 feet in diameter or greater. This application will reduce the number of
           joints to be sealed and coverage is faster, thus savings in labor.
     5.4   For vessels 24 inches in diameter and less pipe insulation sections should be used.
     5.5   For vessels less than 12 feet in diameter, the longitudinal joints of the ISO-C1
           blocks shall be beveled to the radius of the vessel to ensure tight fitting joints.
     5.6   All insulation joints shall be staggered by starting the first course with alternating
           half and full length lags (blocks). Succeeding courses shall be full length lags. The
           longitudinal joints to be staggered on double layered applications.
     5.7   Completely butter all insulation joints with a non-setting sealer. Where double layer
           insulation is installed, butter the joints on the outer layer only. All joints shall be
           tightly butted.
     5.8   On flat equipment surfaces, secure the insulation with a full coat of insulation
           adhesive to the substrate. The adhesive must be recommended for the equipment
           operating temperature. The insulation must be held in place until the adhesive has
           set. On double layer applications, secure the outer layer to the inner layer with the
           same adhesive. Stagger all joints.
     5.9   Secure the blocks on equipment (vessels) 12 feet in diameter and less with
           minimum ½ inch wide stainless steel bands and seals. For equipment greater than
           12 feet use ¾ inch wide stainless steel bands. Band spacing to be 12 inches O.C.



                                      Page 7of 20                              Rev 04.01.04
       with no less than two bands supporting each block of insulation. Bands shall be
       firmly tensioned and sealed.
5.10   On vertical vessels, the insulation should extend ½ inch beyond the support.
       Intermediate supports are generally not required for vessels up to 50 feet high. Pack
       fiberglass blanket insulation under the support ring to create a contraction joint.
       Also pack the ½ inch space between the support ring and the insulation O.D. with
       fiberglass blanket insulation so that none of the support is exposed.
5.11   Equipment stiffener rings and body flanges with an O.D. within 1 inch of the
       insulation O.D. shall be insulated independently. On stiffener rings and body
       flanges which are not to be unbolted, butt the insulation against the flange. Where
       the flanges are insulated independently, the insulation shall be the same thickness as
       the vessel insulation. The flange insulation shall overlap the shell insulation a
       minimum of 2 inches or the insulation thickness. Secure the flange insulation with
       adhesive and stainless steel bands.
5.12   On vessel heads, it is recommended that engineered insulation segments be installed
       for a proper fit. They are machined to fit the contour of the head and available in
       single and double layer. See Material Section for details. The conventional method
       will require field fabricating the insulation segments by beveling and shaping each
       piece.
5.13   Completely butter the head insulation joints per paragraph 5.7.
5.14   Secure the vessel head insulation with a full coat of adhesive when the vessel is less
       than 6 feet in diameter. For vessels 6 feet or greater in diameter secure the
       insulation with minimum ½ inch wide stainless steel bands. Tie the bands to a 3/8
       inch diameter stainless steel ring in the center of the head and the other end to two
       ¾ inch wide body bands located 6 inches and 12 inches respectively down from the
       head knuckle radius, over the vessel wall insulation. Alternate each head band with
       each side wall band. Each insulation segment shall be secured in at least two places.
5.15   Apply a reinforced vapor retarder mastic system to vessel heads and irregular
       shapes. First apply a tack coat of mastic evenly to the insulation surface. Before the
       tack coat is dry embed a reinforcing open weave scrim cloth in the tack coat. The
       cloth shall be wrinkle free and overlap adjoining pieces by 2 inches. Apply a second
       coat of mastic. The total dry film thickness (DFT) of the mastic shall be per
       manufacturer‟s recommendation. Indoors and where there is no mechanical abuse, a
       protective jacket over the mastic system may not be required.
5.16   On flat and cylindrical surfaces, ISO-C1 is available with a factory applied 1-mil
       foil or ASJ finish vapor retarder, which is an acceptable vapor retarder for
       equipment operating at 0F and above. Seal all seams with a matching tape, using a
       squeegee with firm pressure. A protective finish is recommended. See Section 9.0.
5.17   On flat or cylindrical surfaces on equipment located outdoors and/or in a high
       mechanical abuse area, or operating below 0F, apply a vapor retarder laminate
       membrane type sheeting system. Tightly wrap the sheeting and seal all seams with
       matching tape or overlap per manufacturer‟s recommendation. A protective finish is
       recommended. See Section 9.0.
5.18   All vessel nozzles and manways shall be insulated with ISO-C1 insulation to the
       same thickness as applied to the vessel unless indicated otherwise.



                                  Page 8of 20                             Rev 04.01.04
6.0 Warm and Hot Equipment +70F To 300F (+21C To +149C)
     6.1  ISO-C1 foam insulation is available in 4 feet by 8 feet sheets. With insulation
          thickness up to 1 ½ inch thick, the sheet is flexible enough to be wrapped around a
          vessel 12 feet in diameter or greater. This application will reduce the number of
          joints and coverage is faster, thus savings in labor.
     6.2 For tanks greater than 50 feet in diameter and operating above 100F (38C) and
          where 4 feet by 8 feet ISO-C1 sheets are installed, provide a 1/16 inch space
          (thickness of a tongue depressor) at all longitudinal insulation joints for expansion.
          Where ISO-C1 blocks are installed, provide a 1/16 inch space at every fourth
          longitudinal joint.
     6.3 For vessels 24 inches in diameter and less pipe insulation sections should be used.
     6.4 For vessels less than 12 feet in diameter, the longitudinal joints of the ISO-C1
          blocks shall be beveled to the radius of the vessel to ensure full fitting joints.
     6.5 All insulation joints shall be staggered by starting the first course with alternating
          half and full length lags (blocks). Succeeding courses shall be full length lags.
     6.6 Generally, double layered insulation is not required for operating temperatures at
          300F and below, however, if special conditions warrant it, than the second layer
          insulation joints shall be offset from the first layer insulation joints.
     6.7 On flat equipment surfaces, secure the insulation with a full coat of insulation
          adhesive to the substrate. The adhesive must be suitable for the equipment operating
          temperature, otherwise weld pins with compression washers are required. The
          insulation must be held in place until the adhesive has set. On double layer
          applications, secure the outer layer to the inner layer with the same adhesive.
          Stagger all joints.
     6.8 Secure the blocks on equipment (vessels) 12 feet in diameter and less with
          minimum ½ inch wide stainless steel bands and seals. For equipment greater than
          12 feet use ¾ inch wide stainless steel bands. Band spacing to be 12 inches O.C.
          with no less than two bands supporting each block of insulation. Bands shall be
          firmly tensioned and sealed.
     6.9 On vertical vessels, the insulation should extend ½ inch beyond the support.
          Intermediate supports are generally not required for vessels up to 50 feet high. Pack
          fiberglass blanket insulation under the support ring to create a contraction joint.
          Also pack the ½ inch space between the support ring and the insulation O.D. with
          fiberglass blanket insulation so that none of the support is exposed.
     6.10 Equipment stiffener rings and body flanges with an O.D. within 1 inch of the
          insulation O.D. shall be insulated independently. On stiffener rings and body
          flanges which are not to be unbolted, butt the insulation against the flange. Where
          the flanges are insulated independently, the insulation shall be the same thickness as
          the vessel insulation. The flange insulation shall overlap the shell insulation a
          minimum of 2 inches or the insulation thickness. Secure the flange insulation with
          adhesive and stainless steel bands.
     6.11 On vessel heads, it is recommended that engineered insulation segments be installed
          for a proper fit. They are machined to fit the contour of the head and available in
          single and double layer. See Material Section for details. The conventional method



                                     Page 9of 20                             Rev 04.01.04
          will require field fabricating the insulation segments by beveling and shaping each
          piece.
     6.12 Equipment stiffener rings and body flanges with an O.D. within 1 inch of the
          insulation O.D. shall be insulated independently. On stiffener rings and body
          flanges which are not to be unbolted, butt the insulation against the flange. Where
          the flanges are insulated independently, the insulation shall be the same thickness as
          the vessel insulation. The flange insulation shall overlap the shell insulation a
          minimum of 2 inches or the insulation thickness. Secure the flange insulation with
          adhesive and stainless steel bands.
     6.13 For vessel heads, it is recommended that engineered insulation segments be
          installed for a proper fit. They are machined to fit the contour of the head and
          available in single and double layer. See Material Section for details. The
          conventional method will require field fabricating the insulation segments by
          beveling and shaping each piece.
     6.14 Secure the vessel head insulation with a full coat of adhesive when the vessel is less
          than 6 feet in diameter. For vessels 6 feet or greater in diameter secure the
          insulation with minimum ½ inch wide stainless steel bands. The bands shall be
          radially 12 inches apart at the vessel O.D. Tie the bands to a 3/8 inch diameter
          stainless steel ring in the center of the head and the other end to two ¾ inch wide
          body bands located 6 inches and 12 inches respectively down from the head
          knuckle radius, over the vessel wall insulation. Alternate each head band with the
          side wall bands. Each insulation segment shall be secured in at least two places.

7.0 HVAC and Process Duct Insulation Systems 0F To 300F (- 18C To +
   149C)

     7.1   For square and rectangular ducts, the insulation shall be ISO-C1 boards with a
           factory applied 1-mil foil or ASJ finish.
     7.2   On ducts operating below 70F, the insulation thickness should be determined by
           condensation control (anti-sweating). However, square and rectangular ducts
           frequently have many stiffener flanges. On ducts where the stiffeners extend from
           the duct surface 1 ½ inches or less it is generally more economical to apply 2 inch
           thick insulation. Trim the insulation to fit the stiffener and provide a closed butted
           joint.
     7.3   Where the stiffener flange is high, the stiffener shall be insulated separately with the
           same insulation and thickness on the duct. The insulation shall have the same finish.
           The insulation covering the stiffener shall extend over the duct insulation a
           minimum of 2 inches.
     7.4   Where there is a bolted flange that may require dismantling, insulate separately as
           indicated in paragraph 7.2. Terminate the insulation from the flange with a space for
           bolt removal. Seal the exposed insulation butt with a vapor retarder mastic,
     7.5   Secure the board insulation to the duct surface with a full coating of insulation
           adhesive. For ducts operating below 70F, butter the insulation joints with a non-
           setting sealer.




                                      Page 10of 20                             Rev 04.01.04
      7.6  Seal the finish joints with matching tape, using firm pressure with a nylon squeegee.
           The tape shall be applied on a clean, dry surface, at an ambient temperature above
           40F (+4C). Tape wrinkles is not acceptable.
      7.7 For cylindrical ducts up to 24 inches in diameter, use 2-piece pipe sectional
           insulation with the factory applied ASJ finish. For ducts larger than 24 inches in
           diameter, curved sections are available with the same finish.
      7.8 Install the ISO-C1 sectional insulation to cylindrical ducts in the same manner as
           with pipe. For ducts operating below 70F, butter the insulation joints with a non-
           setting sealer. Secure the insulation sections with the ASJ tape, using firm pressure
           with a squeegee. Apply the tape on a clean, dry surface, at an ambient temperature
           above 40F (+4C). Overwrap the tape by 25 %. Where there is no self-sealing
           longitudinal lap, apply the tape. For additional strength, install the tape on 12-inch
           centers and over the butt joint.
      7.9 Where duct supports and other protrusions have contact with the duct surface, cover
           them with the same insulation, thickness and finish.
      7.10 For indoors, in a dry environment, with no mechanical abuse, the above insulation
           system should not require a protective jacketing.

8.0 Expansion and Contraction Joints

      8.1   For cold piping and vessels, contraction joints are not normally required with ISO-
            C1 for operating temperatures above –50F (-45C). For operating temperatures at –
            50F (-45C) and below and over 48 lineal feet of pipe or vessels over 48 feet long, a
            contraction joint is recommended every 12 feet.
      8.2   The contraction joints shall be in the inner layer of insulation only. The contraction
            joint space shall be 1 inch wide and packed with glass fiber insulation. The glass
            fibers shall be oriented perpendicular to the pipe or vessel length. Cover the
            contraction joint with a vapor retarder membrane sheet, overlapping the joint by 2
            inches on both sides. Secure the membrane with reinforced tape on the pipe an
            stainless steel bands.
      8.3   For hot piping and vessels, expansion joints are not normally required with ISO-C1.
            For the exception see paragraph 6.2.

9.0 Insulation Weather Barriers
      9.1  The following table indicates some cost effective finishes to protect insulation from
           the weather, a corrosive environment and/or mechanical abuse.
 Application Finish                                   Remarks
 Pipe         0.016 inch thick plain, smooth, rolled Indoor/Outdoor, non-corrosive;
              Aluminum jacket                         Moderate mechanical abuse
 Pipe         0.016 inch thick white acrylic coated, Indoor/Outdoor, mild corrosion;
              smooth, rolled aluminum jacket          Moderate mechanical abuse
 Pipe         0.020 inch thick white, smooth, rolled Indoor, mild corrosion; Low
              PVC Jacket                              mechanical abuse
 Pipe         0.030 inch thick white, smooth, rolled Indoor/Outdoor, mild corrosion;
              PVC Jacket                              Moderate mechanical abuse



                                       Page 11of 20                            Rev 04.01.04
Pipe           0.010 inch thick smooth, rolled        Indoor/Outdoor, severe corrosion;
               stainless steel Jacket                 High mechanical abuse
Pipe           0.010 inch thick tedlar, glass, hypalonIndoor/Outdoor, severe corrosion;
               rolled Laminate jacketing              High mechanical abuse
Pipe           0.016 inch thick white tedlar coated,  Indoor/Outdoor, severe corrosion;
               smooth, Rolled aluminum jacket         Moderate mechanical abuse
Equipment      0.016 inch thick plain, smooth, rolled Indoor, non-corrosive; Moderate
               Aluminum jacket                        mechanical abuse
Equipment      0.016 inch thick white acrylic coated, Indoor, mild corrosion; Moderate
               smooth, Rolled aluminum jacket         mechanical abuse
Equipment      0.030 inch thick white, smooth, rolled Indoor, mild corrosion; Moderate
               PVC Jacket                             mechanical abuse
Equipment      0.024 inch thick deep corrugated,      Outdoor, non-corrosive; Moderate
               plain Aluminum sheets                  mechanical abuse
Equipment      0.024 inch thick white acrylic coated, Outdoor, mild corrosion; Moderate
               deep Corrugated aluminum sheets        mechanical abuse
Equipment      0.060 inch thick ribbed PVC panels     Outdoor, severe corrosion; High
                                                      mechanical abuse
Equipment      0.016 inch thick smooth, rolled        Indoor/Outdoor, severe corrosion;
               stainless steel Jacket                 High mechanical abuse
Equipment      0.010 inch thick deep corrugated,      Outdoor, severe corrosion; High
               stainless Steel jacket                 mechanical abuse
Ducts          Scrim reinforced, acrylic mastic       Indoor, non-corrosive; Low
               system                                 mechanical abuse
Ducts          0.016 inch thick plain, smooth, rolled Indoor/Outdoor, non-corrosive;
               Aluminum jacket                        Moderate mechanical abuse
Ducts          0.016 inch thick white acrylic coated, Indoor/Outdoor, mild corrosion;
               smooth, Rolled aluminum jacket         Moderate mechanical abuse
Ducts          0.020 inch thick white, smooth, rolled Indoor, mild corrosion; Low
               PVC Jacket                             mechanical abuse
Ducts          0.030 inch thick white, smooth, rolled Indoor/Outdoor, mild corrosion;
               PVC Jacket                             Moderate mechanical abuse
Irregular      Scrim reinforced, acrylic mastic       Indoor, non-corrosive; Low
shapes         system                                 mechanical abuse
Irregular      Scrim reinforced, hypalon mastic       Indoor/Outdoor, mild corrosion; Low
shapes         vapor Retarder system                  mechanical abuse

       9.2 General notes on jacketing selection.
          9.2.1 For cold operating systems where condensate control (anti-sweat) determines the
                insulation thickness, it is more economical to use a coated metal or PVC jacket
                with a high emissivity.
          9.2.2 For application of insulation for personnel protection, use coated metal or PVC
                jacket since it will reduce the surface temperature and may require less
                insulation.
          9.2.3 Generally it is more economical to use corrugated sheeting on equipment and


                                      Page 12of 20                           Rev 04.01.04
          vessels greater than 10 feet in diameter.
   9.2.4 For flat surfaces, such as on ducts, a stucco embossed metal finish will reduce the
          appearance of wrinkles.
   9.2.5 Corrugated jacketing shall not be used on horizontal vessels since the
          corrugations on the top will have a trough effect with moisture.
9.3 Application of metal jacketing on pipe.
  9.3.1 Metal jacketing shall be machine cut and rolled.
  9.3.2 All metal jacketing shall be installed in a watershed fashion on vertical and
         horizontal piping. The seams shall overlap a minimum on 2 inches with the
         longitudinal seam at the 3 o‟clock or 9 o‟clock position on horizontal lines.
 9.3.3 Seal the circumferential lap on horizontal pipe and the longitudinal lap on vertical
        pipe with a continuous bead of caulking sealant.
 9.3.4 Secure the jacketing with minimum 3/8 inch wide stainless steel bands and seals
        on 12 inch centers and at the circumferential overlaps.
 9.3.5 DO NOT use screws to secure jacketing on cold operating piping or on
        electrically traced systems.
 9.3.6 Use two-piece metal fitting covers to the largest commercially available size. For
         larger sizes, install a metal gore system. Seal all seams with a bead of caulking
         sealant.
 9.3.7 Flange and valve insulation shall be covered with the same finish as the pipe
         insulation. It is recommended that the construction of the covers be fabricated
         with “pittsburgh” type joints.
 9.3.8 Seal all pipe insulation terminations such as at valves and flanges with metal end
        caps or collars.
9.4 Application of PVC jacketing on pipe.
 9.4.1 PVC jacketing shall be pre-curled and machine cut.
 9.4.2 All PVC jacketing shall be installed in a watershed fashion on vertical and
         horizontal piping. The seams shall overlap 2 to 4 inches with the longitudinal
         seam at the 3 o‟clock or 9 o‟clock position on horizontal lines.
 9.4.3 Seal all longitudinal joints by solvent welding a continuous bead on a clean dry
         surface. Do not solvent weld the circumferential joints on a hot surface Where the
         Insulation O.D. is greater than 18 inches, install polypropylene bands 9 inches on
         center and at the circumferential overlaps.
 9.4.4 For hot service, provide expansion joints on the jacket every 25 lineal feet of pipe
         and within 10 lineal feet of fittings and supports. Overlap the circumferential joint
         a minimum of 8 inches. Do not secure this joint with bands or wire.
 9.4.5 Seal all insulation terminations, such as at flanges and valves with PVC end caps.
         Use high temperature PVC end caps for operating temperatures to 225F (107C).
         Above this temperature, seal the exposed insulation terminations with a high
         temperature mastic or silicone caulking sealant.
 9.4.6 Use vendor prefabricated PVC flange, valve, tees and strainer covers to the same
         thickness as the jacketing wherever possible.
 9.4.7 For fittings use one piece PVC covers with a nominal 0.035 inch thickness. For
         hot service seal the longitudinal joint by solvent welding. For cold service, solvent
         weld all joints.
9.5 Application of Metal Jacketing on Equipment.


                                 Page 13of 20                             Rev 04.01.04
9.5.1    Smooth, rolled metal jacketing is applied to vertical vessels beginning at the
         base. Each additional course shall be supported to the previous course by
         installing „S‟ clips, spaced 36 inches on center. Fabricate the „S‟ clips from ¾
         inch stainless steel banding. The legs on the „S‟ clips shall be a minimum of 3
         inches. The „S‟ clips will prevent the jacket from telescoping.
9.5.2    All seams shall overlap a minimum of 3 inches in a watershed fashion.
9.5.3    Secure the rolled jacketing with ¾ inch stainless steel bands and seals on 12 inch
         centers and at the circumferential overlaps.
9.5.4    For equipment operating above 150F (66C) and greater than 6 feet in diameter
         install at least one expansion spring. Install an additional spring for every 25
         lineal feet of banding. Space the springs equally around the equipment.
9.5.5    All flashing shall be the same material and thickness as the jacketing.
9.5.6    Install deep corrugated metal sheeting with all seams in a watershed fashion. Lap
         the longitudinal seams a minimum of 2 ½ corrugations and circumferential seams
         by a minimum of 3 inches.
9.5.7    Secure the longitudinal seams with #8 stainless steel screws on 6 inch centers.
9.5.8    Install the screws on the crown of the corrugation with a screw length that will
         not penetrate the insulation or a vapor retarder on cold equipment.
9.5.9    Support succeeding courses of sheeting with a minimum of 2 „S‟ clips per sheet.
         Install ¾ inch wide stainless steel bands on 36 inch centers and at the
         circumferential seam. For equipment greater than 10 feet in diameter use 1 ¼
         inch wide with heavy duty breather springs.
9.5.10   Cut all metal jacketing so that the vertical seams overlap at the center of the
         nozzles and protrusions.
9.5.11   Where screws must be used to secure jacketing on cold equipment that may
         penetrate the vapor retarder, embed the screws with a caulking sealant.
9.5.12   Seal around nozzles and other sources of water entry with a continuous bead of
         caulking sealant. Do not feather edge the bead of sealant.
9.5.13   Install smooth metal jacketing on the heads of horizontal and vertical vessels.
         The finish of the metal should be the same as that on the side wall jacketing.
9.5.14   Cut the metal in gore segments. The width of the segments will be determined by
         the size of the vessel head and the type of head. The segments should lay flat and
         extend over the head and side wall by 6 inches. The segments should extend
         within 24 inches of the head center and overlap the adjacent segment by 2 inches.
         The overlapping edge shall have a constructed bead.
9.5.15   For vessels greater than 6 feet in diameter, install 9 inch sheets of aluminum
         under the insulation banding. Locate the sheets around the vessel head 24 inches
         from the center of the vessel and at the vessel head O.D.
9.5.16   Secure the metal segments to each other and to the underlying sheeting with #8
         stainless steel screws. Apply a continuous bead of caulking sealant along the
         metal bead and install the screws on 6 inch centers, ½ inch from the bead.
9.5.17   Cover the center of the vessel head with a matching metal round cover. Cut an
         opening for the center nozzle if applicable and overlap the gore segments by 2
         inches. The round cover (crown) should have beaded edge.




                                Page 14of 20                            Rev 04.01.04
 9.5.18 Seal the crown edge with a continuous bead of caulking sealant and install screws
        on 6 inch centers and ½ inch from the edge. Penetrate the segments with the
        screws.
 9.5.19 Secure the gore segments at the head O.D. to the side wall jacketing with 2
        screws per segment.
 9.5.20 Install a beauty band around the O.D. of the vessel to cover where the gore
        segments overlap the side wall finish. Fabricate the beauty band from the same
        metal finish applied on the head. The band should be 9 inches wide and beaded
        on both edges. Secure the beauty band with two stainless steel bands.
9.6 Application of PVC on Outdoor Equipment.
 9.6.1 For horizontal and vertical vessels use white PVC, 0.060 inch thick, rib panels.
 9.6.2 All joints shall lap a minimum 6 inches in a watershed fashion. Where required,
        cut the panels so that the un-ribbed section is located at the heads.
 9.6.3 On vertical vessels, where additional panel courses are required, support the
        preceding courses with „S‟ clips, fabricated from 1 ¼ inch wide stainless steel
        banding. The legs of the „S‟ clip shall be 3 inches long, with 4 clips per panel.
 9.6.4 Do not secure the circumferential overlap with screws or adhesives. Secure the
        vertical joints with stainless steel screws on the crown of the panel rib. On
        horizontal vessels, seal the circumferential joints with caulk adhesive or equal.
 9.6.5 Secure the panels with 1 ¼ wide stainless steel bands and seals. Each band shall
        have a minimum of one Super-Mity Spring Assembly. Install an additional spring
        assembly for every 20 lineal feet of banding. Pre-tension the bands by tightening
        each spring by ¼ inch. Locate the bands at the panel overlaps and at the non-
        ribbed locations.
 9.6.6 For heads of horizontal and vertical vessels use white PVC, 0.060 inch thick,
        factory engineered vessel head segments. All necessary materials for installing
        this system are provided by the PVC Vendor. The PVC Vendor must be provided
        the exact dimensions of the vessel shell insulation O.D. and the type head.
        Follow the installation instructions by the PVC Vendor.
9.7 Application of PVC on Indoor Equipment.
 9.7.1 For the vessel shell apply white, 0.039 inch thick PVC roll jacketing.
 9.7.2 All jacketing joints shall overlap a minimum 3 inches. On vertical vessels support
        the preceding courses of the roll jacketing with „S‟ clips, fabricated from ¾ inch
        stainless steel banding. The legs of the „S‟ clip shall be 3 inches long with clips
        located 18 inches on center.
 9.7.3 Secure the jacketing with ¾ inch bands on 12 inch centers and at the overlaps.
        Each band shall have a minimum of one expansion spring. Install an additional
        spring for every 20 lineal feet of banding. Pre-tension the springs by ¼ inch.
 9.7.4 For heads of horizontal and vertical vessels use white PVC, 0.060 inch thick,
        factory engineered vessel head segments. All necessary materials for installing
        this system are provided by the PVC Vendor. The PVC Vendor must be provided
        the exact dimensions of the vessel shell O.D. and the type head. Follow the
        installation instructions by the PVC Vendor. Note: The PVC thickness should not
        exceed 0.035 inches thick in order to meet the flame spread and smoke density
        rating of 25-50 per ASTM E94 on indoor applications.
9.8 Application of Metal Jacketing on Ducts.


                                Page 15of 20                            Rev 04.01.04
      9.8.1 For round ducts apply the metal jacketing in the manner as indicated in the pipe
            section.
      9.8.2 For square and rectangular ducts apply rolled metal jacketing with all seams
            overlapping 2 inches in a watershed fashion.
      9.8.3 Where the duct including the insulation thickness is 44 inches or less and the
            insulation is thick enough to eliminate protruding stiffener flanges, run the roll
            metal jacketing (48 inch wide rolls) lengthwise with the duct. This application
            will reduce the number of required seams.
      9.8.4 Machine brake the metal jacketing for sharp corners. On large ducts, cross break
            the jacket to eliminate wrinkles.
      9.8.5 Secure the seams with stainless steel sheet metal screws 4 inches on center. On
            horizontal ducts, seal the seams on the duct horizontal surfaces with a continuous
            bead of caulking sealant.
      9.8.6 Flash with the same metal applied to the duct, where insulation terminates at
            bolted flanges.
     9.9 Application of Reinforced Mastic Systems On Irregular Shapes.
      9.9.1 The use of reinforced mastic systems may be applied to vessel heads and
            insulated fittings since they are considered irregular shapes. It should be noted
            that these finishes do not resist the weather or mechanical abuse well.
      9.9.2 For a vapor retarder finish for cold systems or a breathing mastic for hot systems,
            apply a tack coat of mastic and embed a open weave scrim cloth. Lap the
            adjacent pieces of scrim cloth a minimum of 2 inches and eliminate wrinkles.
            Apply a second coat as soon as the first coat is tack free. Both coats must be
            applied on the same day. The total dry film thickness (DFT) shall comply with
            the manufacturer‟s recommendations.

10.0 Coating To Prevent Corrosion Under Insulation

    10.1     Coating to protect austenitic stainless steel under insulation.
      10.1.1 Operating temperature of –50F to +300F (-45C to +150C). Substrate surface
             preparation per SSPC-SP6, commercial blast cleaning per SSPC Pittsburgh PA,
             with a surface profile of 1 to 2 mils. Apply 2 coats of 6 mils dry film thickness
             (DFT) each coat of epoxy/phenolic or high-temperature rated amine-cured coal
             tar epoxy.
    10.2     Coating to protect carbon steel under insulation.
      10.2.1 Operating temperature of –50F to +300F (-45C to +150C). Substrate surface
             preparation per SSPC-SP5, white metal blast cleaning per SSPC Pittsburgh, PA,
             with a surface profile of 2 to 3 mils. Apply 2 coats of 6 mils (DFT) each coat of
             epoxy/phenolic or high-temperature rated amine-cured coal tar epoxy.
      10.2.2 Operating temperature of 50F to 140F (-45C to +60C). Substrate surface
             preparation per SSPC-10, near-white metal blast cleaning per SSPC Pittsburgh,
             PA, with a surface profile of 2 to 3 mils. Apply 2 coats of 5 mils (DMT) each
             coat of high build epoxy.




                                     Page 16of 20                           Rev 04.01.04
11.0 Insulation Materials and Accessories
      11.1 The list of acceptable insulation materials and accessories is to serve as a guide
           only. It is not the intent to exclude any manufacturer‟s product which may be equal
           to or better than the insulation materials and accessories listed below.
      11.2 Smooth aluminum rolled jacketing, To ASTM B2089, 0.016 inch thick. Specify
           2.5- mil poly/surlyn backing with plain, white acrylic or tedlar coated. Order 36
           inch or 48 inch rolls.
       Childers 16-mil aluminum roll jacketing
       RPR 16-mil aluminum roll jacketing
       Pabco 16-mil aluminum roll jacketing
      11.3 Deep Corrugated (1 ¼ inch) Aluminum Sheeting, To ASTM B209, 0.024 inch
           thick. Specify 2.5-mil poly/surlyn with plain or white acrylic coated.
       Childers, 24-mil Deep Corrugated Aluminum Sheets
       RPR, 24-mil Deep Corrugated Aluminum Sheets
       Pabco, 24-mil Deep Corrugated Aluminum Sheets
      11.4 Smooth stainless steel rolled jacketing, To ASTM A-240, 0.010 inch thick with
           standard moisture barrier backing.
       Childers, 10-mil stainless steel rolled jacketing
       RPR, 10-mil stainless steel rolled jacketing
       Pabco, 10-mil stainless steel rolled jacketing
      11.5 Smooth Stainless Steel Rolled Jacketing, To ASTM A-240, 0.016 inch thick with
           standard moisture barrier.
       Childers, 16-mil stainless steel rolled jacketing
       RPR, 16-mil stainless steel rolled jacketing
       Pabco, 16-mil stainless steel rolled jacketing
      11.6 Deep Corrugated (1 ¼ inch) Stainless Steel Sheeting, To ASTM A-240, 0.010 inch
           thick with standard moisture barrier.
       Childers, 10-mil Corrugated Stainless Steel Sheeting
       RPR, 10-mil Deep Corrugated Stainless Steel Sheeting
       Pabco, 10-mil Deep Corrugated Stainless Steel Sheeting
      11.7 PVC (polyvinylchloride) rolled jacketing, 0.020 inch thick. Order pre-curled.
           Specify color. The following PVC meets 25/50 rating to ASTM E-84
       Proto, LoSmoke 20-mil Proto-Jac
       Manville, Zeston 2000 20-mil
       CEEL-Co, CEEL-Tite 320
      11.8 PVC (polyvinylchloride) rolled jacketing, 0.030 inch thick. Order pre-curled.
          Specify color.
       Proto, LoSmoke 30-mil Proto-Jac (Meets 25/50 rating)
       Manville, Zeston 2000 30-mil
       CEEL-Co, CEEL-Tite330
      11.9 Heavy Gage PVC (polyvinylchloride) Ribbed Panels, 0.060 inch thick. Specify
           color.
       Proto, Proto Corrugated Panels-60mil
      11.10 Heavy Gage PVC (polyvinylchloride) Gore Vessel Heads, 0.060 inch thick.
           Specify color


                                     Page 17of 20                           Rev 04.01.04
 Proto, LoSmoke PVC Protop Tank Tops
11.11 Aluminum Covers For Vessel Heads, Fabricated Gores, 0.020 inch thick, Specify
     Plain or Acrylic Coated. Order 2.5-mil Poly/Surlyn Backing.
 Childers, Aluminum Gore Head-Jacs
 RPR, Aluminum Gore Head Jacket
11.12 Aluminum Two-piece Die-Formed 45 and 90 Ell Covers. Specify plain, acrylic or
     tedlar coated.
 Childers, Ell-Jac
 RPR, 2-Piece Aluminum Elbow Covers
 Pabco, Sure-Fit Elbow Covers
11.13 Stainless Steel Two-Piece Die-Formed 45 and 90 Ell Covers.
 Childers, Stainless Steel Univers Ell-Jacs
 RPR,2-Piece Stainless Steel Elbow Covers
11.14 Light Gage PVC One-Piece Ell Covers. 0.020 inch nom. thickness. Specify color
 Proto, LoSmoke Light Gage
 Manville, Zeston 2000
 CEEL-Co, 300 Series, Light-Gage
11.15 Heavy Gage PVC One-Piece Ell Covers. 0.030 inch nom. thickness. Specify
     color.
 Proto, Industrial Weight PVC (Meets 25/50 per ASTM E84)
 Manville, Zeston 2000 Heavy Gage
 CEEL-Co, Ceel-Tite 300 Series Heavy Duty
11.16 Vapor Retarder Mastics and Coatings - Indoor
 Childers Chil-Perm CP-30, CP-32 (non-flammable)
 Marathon Lo Perm 590, 591
 Fosters Vapor-Fas 30-15
11.17 Vapor Retarder Mastics and Coatings – Indoor/Outdoor
 Childers Encacel V, X, Chil-Perm WB CP-35
 Fosters Monolar 60-39, 60-59
 Fosters Vapor-Safe Mastic 30-90
11.18 Vapor Retarder Membrane
 Polyguard Products, inc. Insulrap 30, Insulrap 50
 Alpha Associates Inc. Alpha-Alaflex Style 13 MAM
 TGH-1000 VB
11.19 Insulation Joint Non-Setting Sealer
 Fosters Foamseal 30-45
 Childers CP-70
 Epolux Cadaseal 745
11.20 Insulation Adhesive For Adhesion To Itself and To The Substrate.
 Fosters Fire Resistant Adhesive 81-33 or Kold-Fas 82-08
 Childers Chil-Rene CP-96
11.21 Open-Weave Glass Cloth, 10x10/in.sq. min.
 J.P. Stevens, Glass Cloth, Style 1659/Geon
 Burlington, Resin Treated Style 1659
 Childers, No. 10 Chil-Glas
11.22 ASJ Kraft Aluminum Laminate-White


                             Page 18of 20                         Rev 04.01.04
      Alpha, Alpha-Temp 10651 ASJ
      Compac, FB200 ASJ
     11.23 Breather Acrylic Type Mastic
      L&L Coatings, L&L 300 Mastic-White
      Childers, Vi-Cryl CP-11
      Fosters, Weatherite Mastic 36-10, 46-10
     11.24 Caulking Sealant, Silicone Rubber Compound
      Dow Corning, Silastic 732 RTV, 999 RTV
      Rhone-Poulene, Rhodorsil 3B-2542 (Aluminum)
      Pecora, 863 Silicone Sealant 345 (White)
     11.25 Stainless Steel Bands and Seals. Type 430, 304 acceptable. ½ or ¾ inch widths x
          0.020 inch thickness. Available from insulation distributors
     11.26 Stainless Steel Bands and Seals, 1 ¼ inch wide
      Childers, 1 ¼ inch Stainless Steel Bands and seals
      A.J.Gerrard, 1 ¼ inch Stainless Steel Bands and Seals
     11.27 Stainless Steel 4 inch Expansion Springs
      A.J. Gerrard, 4 in. Breather Spring
      Childers, Chil-Spring 4 in.
     11.28 Heavy Duty Stainless Steel Compression Springs
      Childers, Super-Mity-Springs
     11.29 Polyester Film Tape, Pressure-Sensitive Glass Reinforced, ½ inch wide
      3M Co., Scotchbrand No.898 Polyester Tape
     11.30 ASJ Pressure Sensitive Tape, 3 inches wide
      Compac, Perm Tape ASJ Std 105-7
      Venture, 1540 CW ASJ
     11.31 Foil (2-mil) Pressure Sensitive Tape, 3 inches wide
      Compac, Perm Tape Foil Std 120-6
      Venture, 1520 CW Foil
     11.32 PVC Cement. Specify clear or white
      Available from the PVC Distributors
     11.33 Tedlar Pressure Sensitive Tape, 2 inch wide
      Alpha, Avalock Style 209TG (Gray), Style 209 TW (White)

12.0 Horizontal Pipe Supported by Hangers
     12.1 Supporting pipe outside the insulation eliminates the following:
      12.1.1 Need to know the precise location of the hanger.
      12.1.2 Insulation maintenance on cold piping to prevent ice or condensate accumulation
              at the protruding hanger rod.
      12.1.3 Cold spots at hangers on traced piping.
      12.1.4 Maintenance of flashing at hanger rods.
      12.1.5 Water entry at hanger rods.
     12.2 Supporting pipe outside the insulation is restricted to horizontal piping which slops
           less than 1 in/ft and is not subject to severe vibration.
     12.3 On traced systems it is recommended to locate the tracers on top of the pipe.



                                     Page 19of 20                           Rev 04.01.04
12.4 It is recommended to weld the saddle to the clevis hanger to prevent the saddle from
     slipping.
12.5 Dimensions of standard clevis hangers are sized for bare pipe and are not standard
     between manufacturers. Some sizes of clevis hangers have no clearance between
     the through and OD of the pipe. For such sizes, use the next larger hanger size with
     120 deg. Saddles. For 180 deg. Saddles, use a clevis hanger one size larger than the
     insulation OD. Clevis-type hangers are preferred over the two-bolt pipe clamps
     since they are more elastic with sudden loads and adapt themselves better to the
     saddle configuration.
12.6 Load-bearing segments shall cover the lower 180 deg. Of pipe circumference. The
     length of the segment must project at least 1 inch beyond each end of the saddle.
     The load bearing insulation segments shall be minimum compression of 94 psi.
12.7 Saddles are required between the insulation jacket and pipe hanger to prevent
     cutting into the insulation. The saddle shall be constructed of minimum 10-gage
     (.1345 inch) carbon steel to provide support indicated in the following table. The
     saddles shall be hot dipped galvanized or coated to prevent corrosion of the metal.
     The 180 deg. Saddles are required on large piping to provide improved stability and
     load distribution.
12.8 Where plain aluminum is used as the insulation weather retarder, outdoors or in wet
     areas, isolate the steel saddle from the aluminum with a sheet of 6-mil polyethylene
     film. This will prevent corrosion caused by contact of dissimilar metals.
12.9 The following criteria was used to determine the saddle size in the table: ½”
     through 1” with C. Stl. Sch. 160 pipe, 1 ½” through 24” with C. Stl. Sch. 80 pipe,
     filled with water. The pipe is insulated with Dyplast Products ISO-C1
     polyisocyanurate foam and covered with a vapor retarder and aluminum jacketing.
     The saddle design limits the compression at the clevis clamp to 1/16 inch.




                               Page 20of 20                           Rev 04.01.04

								
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