Specification by xuyuzhu

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									                                                   SECTION 13442

                             COMPUTER AND NETWORK SUBSYSTEM (CNS)


PART 1 GENERAL

1.1    REFERENCES

       A. The following is a list of standards which may be referenced in this section:
          1. American National Standards Institute (ANSI):
              a. X3.5, Flow Chart Symbols and Their Usage in Information Processing.
          2. Institute of Electrical and Electronics Engineers (IEEE): 802.3, Local Area Networks:
              Carrier Sense Multiple Access with Collision Detection

1.2    SUMMARY

       A. This section covers requirements for Computer Subsystem (CNS) and is in addition to
          requirements in Section 1-13400, Process Instrumentation and Control Systems (PICS). Key
          technical definitions and requirements for CNS are given in Section 1-13400, Process
          Instrumentation and Control Systems (PICS) and Section 1-13401, Programmable Logic
          Controller Subsystem (PLCS).

       B.    Contractor shall provide all hardware features required to make the system totally operational.

       C.    The CNS hardware and software have components provided by the OWNER. Verify
             Contractor and OWNER responsibilities as identified in the contract documents.

       D. Configuring of HMI and PLC applications software will be by Owner.

       E.    Packaged equipment that utilized PLC control shall be provided and configured by the
             Contractor.

       F.    Related work shall be performed at the Site by others as noted in Section 01015 – Contract
             Coordination (Work by Others). However, the contract drawings and specifications provide
             the complete contract boundaries.

       G. DEFINITIONS
          1. Abbreviations:
             a. CPU: Central Processing Unit.
             b. CNS: Computer and Network Subsystem.
             c. OIU: Operator Interface Unit.
             d. PLC: Programmable Logic Controller.
             e. PMCS: Process Monitoring and Control Software.
          2. Terms:
             a. Circular Files: Files that are updated such that each record written to file replaces
                 oldest record in file.
             b. Log a Message: Print a message on an alarm/status printer.




WESTERN WAKE PARTNERS, NORTH CAROLINA                               COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                 1-13442-1
ARCADIS G&M of North Carolina, Inc.                                                       REVISED 5-6-2011
Project No. NC705009.0000
             3.    Types of Variables:
                   a. PLC Variables: Analog inputs, discrete inputs, analog outputs, discrete outputs,
                       pulse inputs, calculated variables, and internal register values.
                   b. Calculated Analog Points (CA): Analog variables computed from inputs from PLCs,
                       manual inputs, calculated discrete points, and other calculated analog points.
                   c. Calculated Discrete Points (CD): Discrete variables computed from inputs from
                       PLCs, manual inputs, calculates analog points, and other calculated discrete points.
                   d. Manual Inputs (MI): Variables whose values are manually entered, e.g. laboratory
                       data.
                   e. Process Variables (PV): Analog variables from PLCs and calculated analog points.

1.3    SUBMITTALS

       A. Shop Drawings, Hardware Submittals:
          1. CNS block diagram and overview description.
          2. Bill of Materials for CNS Components: Component number, manufacturer, model
              number, component description, and quantity.
          3. Room Layout Drawings: For control room show to scale enclosures, furniture, CNS
              equipment, and service area requirements.
          4. Power Connection Diagram: For CNS equipment in show interconnection from power
              sources through uninterruptible power supplies and power distribution panels, to
              computer and peripherals.
          5. Grounding Diagram: For CNS equipment show grounding philosophy and
              implementation.
          6. Interconnecting Wiring and Cabling Diagrams: For CNS equipment, identify terminal
              receptacles, cable ID tags, actual cable lengths, and maximum distance limitations
              between cabinets or components.
          7. Component Submittal: For each CNS component:
              a. General data and description.
              b. Engineering Specifications and data sheets.
              c. Scaled drawings and mounting arrangements.
              d. Equipment weights.
              e. Power and grounding requirements.
              f. External electrical interconnection and interface definitions.
          8. Shop Drawings for Specifically Manufactured CNS Equipment:
              a. A complete connection diagram.
              b. Data sheets on each major item, annotated as necessary to describe specific items
                   furnished.
              c. Scaled layout and fabrication drawings.
                   1) Cable access areas and cable routing.
                   2) Power termination and ground lug location.
                   3) Data cable termination points.
                   4) Anchor bolt size and location.
              d. Installation and mounting detail drawings.
              e. Equipment weights.
          9. Power Consumption and Heat Dissipation Summary for CNS Equipment: Voltages,
              current, phase(s), and maximum heat dissipations in Btu/hr.




WESTERN WAKE PARTNERS, NORTH CAROLINA                              COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                1-13442-2
ARCADIS G&M of North Carolina, Inc.                                                      REVISED 5-6-2011
Project No. NC705009.0000
       B.    Shop Drawings, Network:
             1. Routing path assignments for all network nodes.
             2. IP address for all network nodes.

       C.    NOT USED

       D. Samples: Color and material Samples of hardware enclosures and furniture.

       E.    Informational Submittals:
             1. Testing related Submittals.
             2. O&M Manuals-Hardware:
                  a. Updated version of Hardware Shop Drawings Submittals.
                  b. Component Manufacturers’ O&M Manuals: Instructions for installation, operation,
                      maintenance, troubleshooting, and calibration.
                  c. List of spare parts and expendables provided.
                  d. List of recommended additional spare parts.
             3. O&M Manuals-Software Documentation: By Owner

1.4    ENVIRONMENTAL REQUIREMENTS

       A. Central Control Room: Computer room, air conditioned.

       B.    Other Locations:
             1. Electrical Rooms: Inside, air conditioned.

1.5    NOT USED

1.6    EXTRA MATERIALS

       A. Spare Parts:
          1. Two pointing devices of each type supplied.
          2. One complete OIU unit.
          3. One keyboard of each type used for OIU units.

       B.    Expendables:
             1. Two boxes (2,500 sheets per box) of single-part, 20-pound, unlined, white, tractor feed,
                 edge perf, full width, fanfold paper for each impact printer, except for alarm/status
                 printers.
             2. Two boxes (1,500 sheets per box) of two-part, carbonless, 15-pound, green bar, tractor
                 feed, edge perf, full width, fanfold paper for each alarm/status printer.
             3. Two boxes (10 reams, 5,000 sheets per box), 20-pound, white paper for each laser
                 printer.
             4. Six ink cartridges for each non-color inkjet printer.
             5. Four sets of color ink cartridges for each color printer.
             6. One toner cartridge kit and one user maintenance kit for laser printer.
             7. Fifty CDs/DVDs for each computer using CDs/DVDs, including personal computers.
             8. 20 percent, but no less than 10 of each type and current rating of fuse used.




WESTERN WAKE PARTNERS, NORTH CAROLINA                             COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                               1-13442-3
ARCADIS G&M of North Carolina, Inc.                                                     REVISED 5-6-2011
Project No. NC705009.0000
PART 2 PRODUCTS

2.1    SYSTEM PERFORMANCE

       A. Capacity:
          1. Furnish CNS with sufficient capacity to handle equipment required by Contract
              Documents and equipment listed under paragraph Future Components, and still have
              specified spare capacity. Except for software configuring, implementing listed future
              components, shall not require addition of other CNS hardware or software.
          2. Spare capacities are based on size of CNS as required to implement equipment required
              by Contract Documents plus equipment listed under paragraph Future Components. For
              example, total storage capacity furnished for given functions:

                          (CURRENT + FUTURE)*(100 + SPARE)/100
                          Where:
                          CURRENT Equals: Storage capacity required to implement that function for
                          hardware and software furnished under Contract Documents.
                          FUTURE Equals: Storage capacity required to implement that function for
                          equipment listed under paragraph Future Components.
                          SPARE Equals: Percentage spare specified for that function.
             3.    Capacity refers to required physical size, storage capacity, and processing throughput of
                   CNS hardware and software. CNS changes required to implement listed future
                   components shall be limited to “configuring” database tables and system parameters to
                   allow system to recognize the additional equipment.
             4.    In order to verify that system has required capacity, accelerate PLC polling rate and
                   exception reporting rates during all tests to simulate inputs from additional devices listed
                   under paragraph Future Components. For example, if number of future RTUs listed
                   equals the number of RTUs required by contract document, conduct tests using a polling
                   rate that is twice that specified.

       B.    Future Components: Furnish sufficient CNS capacity to implement the following future
             components. Assume that each future PLC has a number of I/O points equal to average
             number of I/O point provided for similar units required by Contract Documents.
             1. PLCs: 2.
             2. CNS Operator Interface Units: 2.




WESTERN WAKE PARTNERS, NORTH CAROLINA                                 COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                   1-13442-4
ARCADIS G&M of North Carolina, Inc.                                                         REVISED 5-6-2011
Project No. NC705009.0000
       C.    OIU Response Time:
             1. Under moderately busy conditions, displays on OIUs are brought up and updated with
                 real-time data within number of seconds shown.



                                                                              Bring Up
                                                   Display Type                            Update
                            Main Menu                                             4           --
                            Help & Legend                                         5           --
                            Process Graphic                                       7           10
                            Alarm Summary                                         6           --
                            Trend, Real-Time, 4 Points                            5            5
                            Trend, 6-Hour, 5-Minute Samples, 4 Points            10           --
                            Trend, 5-Day, 1-Hour Samples, 4 Points               12           --
                            Tabular                                                           10

             2.    Moderately busy conditions are defined as follows:
                   a. Half the OIUs are each alternately requesting process graphic displays and historical
                      trend displays.
                   b. One OIU configuring process database.
                   c. Daily report running.
                   d. Data being transferred from process computer to personal computer.
                   e. PLCs are in operation.
                   f. Analog and discrete input points requiring processing due to exception reports from
                      PLCs occur at average rate of 10 per second.
                   g. Polling rates have been adjusted to simulate devices listed under paragraph Future
                      Components.

       D. End-to-End Response Time: Under moderately busy conditions, maximum time from
          beginning to end of following sequence shall be 10 seconds:
          1. An operator initiates a request from a process graphic display to move a valve, start a
              drive, or stop a drive.
          2. Command is sent to PLC.
          3. Command is executed by PLC.
          4. CNS interrogates status of PLC.
          5. CNS updates process graphic display to show response to the command.

       E.    Dual Computer-Automatic Failover:
             1. Response to Single Failure: No loss of required functions due to single failure of centrally
                 located CNS equipment or software.
             2. CNS Hardware Configuration: Refer to Control System Block Diagram on Drawings.



WESTERN WAKE PARTNERS, NORTH CAROLINA                                COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                  1-13442-5
ARCADIS G&M of North Carolina, Inc.                                                        REVISED 5-6-2011
Project No. NC705009.0000
             3.    Modes of Operation:
                   a. Operator selection of either CPU as online CPU and other as hot-standby CPU.
                        Provide for changing the status of the hot-standby computer to stand alone to operate
                        independent of online computer.
                   b. Hot-standby CPU request online CPU to report its status at least every 5 seconds. If
                        online CPU does not respond properly for 10 seconds, hot-standby CPU takes
                        control of online peripherals and PLCs and logs a failover message. Failed CPU then
                        operate independent of online CPU until an operator requests failed system to return
                        to hot-standby mode.
             4.    Online CPU periodically check status of hot-standby CPU and log alarm message if hot-
                   standby CPU fails.
             5.    Maintain all data structures on the hot-standby CPU such that:
                   a. For Process Database, related configuration tables and other data structures needed
                        to fully define all real-time functions: Within 1 minute of time that changes to these
                        data structures occur in online CPU, update hot-standby CPU with these changes.
                   b. For historical disk files and all data structures and disk files not covered in above
                        subparagraph: Within 15 minutes of time that changes to these data structures occur
                        in online CPU, update hot-standby CPU with these changes.

2.2    HARDWARE

       A. CNS Block Diagram: Refer to figure CNS Block Diagram on Drawings. Interconnecting lines
          shown on block diagram imply information flow and not necessarily wiring.

       B.    Control Room Layout: Obtain information from Engineer.

       C.    Equipment Mounting: Unless otherwise noted, mount all CNS components in freestanding
             metal cabinets or provide with suitable metal stands to bring them to normal operating levels.

       D. Color: Color-coordinate CNS components to produce an attractive installation.

       E.    Cables Required:
             1. For interconnection between all CNS components, except where leased telephone lines
                 are shown.
             2. Cables Under 50 Feet Long: Prefabricated with connectors and factory tested with CNS.
             3. Special signal conditioning/repeating equipment as required for proper operation of CNS.
             4. Surge Arrestors: For Connections to CNS from equipment outside Central Control Room.
                 To protect CNS from damage by electrical transients induced in cables by lighting
                 discharges or electrical equipment.
             5. Refer to Fiber Optic Section13431, and the SCADA BLOCK DIAGRAM Drawing for
                 site network overview.

       F.    Power to CNS Equipment:
             1. Central Control Room: Uninterruptible power supply system.
             2. Other Locations: 120-volt ac, single-phase, three-wire, 60-Hz.

       G. Power Failure Detection and AUTO Restart:




WESTERN WAKE PARTNERS, NORTH CAROLINA                                COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                  1-13442-6
ARCADIS G&M of North Carolina, Inc.                                                        REVISED 5-6-2011
Project No. NC705009.0000
             1.    Prevents errors due to power failure or short-term power fluctuations that occur when
                   UPS is not operating.
             2.    Power Failure: Voltage variations in excess of plus or minus 10 percent of normal for a
                   duration of 0.5 second or longer. Causes CNS equipment to automatically shut down as
                   required to prevent introducing errors on disk.
             3.    Short-term Power Fluctuations: Voltage variations in excess of plus or minus 10 percent
                   of normal for durations of 0.5 second to 1 millisecond). CNS shuts down as above or is
                   buffered to prevent fluctuations from causing errors.
             4.    CNS executes Restart program and return to normal operation when power is restored.
                   Battery backed-up real-time clock used by CNS during automatic restart to set time and
                   date.

2.3    EQUIPMENT

       A. CNS Component List Format:
          1. Quantity: Capacities and quantities shown are minimum. Provide additional capacity or
             units as necessary to meet the functional requirements. Refer to Drawings where no
             quantity is listed here.
          2. Component Identification Code: Refer to Article Supplements, Component
             Specifications.

       B.    CNS Component List: Refer to Article Supplements, Component List.

       C.    Communications Control and Switching: Dual redundant communications control equipment
             for connection to peripheral devices, and PLCs.
             1. Application Servers will be configured in a redundant “mirror image” arrangement
                  connected directly to each other via secondary network interface cards (NICs) such that
                  the direct connect cable supports communications without putting overhead traffic
                  directly on the network backbone.


PART 3 EXECUTION

3.1    FIELD QUALITY CONTROL

       A. Operational Readiness Test.

       B.    Performance Acceptance Test: Include the same types of testing that are specified for Factory
             Demonstration Test.

       C.    Reliability Acceptance Test.

3.2    TRAINING

       A. Operations:
          1. Training Session Duration: 5 instructor days.
          2. Number of Training Sessions: Two.
          3. Location: Project Site.




WESTERN WAKE PARTNERS, NORTH CAROLINA                               COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                 1-13442-7
ARCADIS G&M of North Carolina, Inc.                                                       REVISED 5-6-2011
Project No. NC705009.0000
             4.    Content: Using man-machine interface functions from process operator’s standpoint.
             5.    Operations training shall be provided by Owner.

       B.    Hardware Maintenance Factory Training:
             1. Training Session Duration: 5 instructor days.
             2. Number of Training Sessions: One.
             3. Location: Factory or training center.
             4. When: Before Factory Demonstration Test.
             5. Number of Students: Three persons.
             6. Content:
                 a. Standard hardware maintenance for CNS equipment.
                 b. How equipment and components are connected and set up for Project.
                 c. Test, adjustment, and calibration procedures.
                 d. Troubleshooting and diagnosis.
                 e. Component removal and replacement.
                 f. Periodic maintenance.

       C.    Hardware Maintenance Onsite Training:
             1. Training Session Duration: 5 instructor days.
             2. Number of Training Sessions: One.
             3. Location: Project Site.
             4. Content: Similar to factory training but uses installed hardware.

       D. Software Maintenance Factory and Onsite training shall be provided by Owner.


                                                   END OF SECTION




WESTERN WAKE PARTNERS, NORTH CAROLINA                               COMPUTER AND NETWORK SUBSYSTEM (CNS)
Western Wake Regional Water Reclamation Facility                                                 1-13442-8
ARCADIS G&M of North Carolina, Inc.                                                       REVISED 5-6-2011
Project No. NC705009.0000

								
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