Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections




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НазваниеDrawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections
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PART 3 - EXECUTION

    1. INSTALLATION

      1. Install containment air filtration system in accordance with manufacture's instructions and applicable sections of ASME N-509, and in accordance with the manufacturer's diagrams and recommendations.

      2. Clean all dirt, dust and debris that may be in the containment system or attached ductwork during construction and installation.

      3. Store all filters and adsorbers in a secure and dry storage area.

      4. The HEPA filters shall be shipped separately and must be handled very carefully and stored in a safe, dry space until ready for installation. The filter trains should be totally installed, cleaned and operated for a minimum of one hour before any HEPA filters are installed. The HEPA filters must be handled carefully during storage and installation.

      5. Refer to details on the drawings for different configuration requirements including which assemblies are to contain prefilters.

      6. Co-ordinate location of mounting stand legs to ensure they do not conflict with light fixtures, access covers and pipe/conduit penetration plates located in the floor.

    2. WELDING

      1. Welding procedures, welders, and welding operators shall be qualified in accordance with ASME BPVC SEC IX. All welding performed shall meet the requirements specified in ASME BPVC SEC IX and as required by ASME N509. Pressure retaining weld joints shall comply with the requirements of ASME BPVC SEC IX.

    3. FACTORY QUALITY ASSURANCE PROGRAM

      1. The filter housing shall be manufactured under a quality assurance program has been assessed and independently certified to meet the requirements of ISO 9001:2000 for design, manufacture and distribution of containment and HVAC air filtration products.

      2. Additionally, the transitions and/or plenums, housings, test sections and mounting components shall be manufactured and inspected under a Quality Assurance Program that meets all of the basic requirements of ASME NQA-1, "Quality Assurance Program Requirements for Nuclear Facilities". The manufacturer shall submit documented evidence they have been audited by customers at least three (3) times to these requirements and successfully passed all three (3) audits.

      3. All production welds shall be visually inspected to assure that they meet the workmanship acceptance criteria described in Sections 5 and 6 of AWS D9.1M/D9.1:2006, Specification for Welding of Sheet Metal or ASME Boiler and Pressure Vessel Code Section IX

    4. FACTORY ACCEPTANCE TESTS

      1. All acceptance tests shall be in accordance with the procedures in ASME N510 Proposed test schedules for adjusting and balancing, housing leak and pressure, air-aerosol mixing uniformity, damper operation and leakage, system bypass, and performance tests of systems, shall be provided at least 2 weeks prior to the start of related testing.

      2. Visual Inspection

        1. Visual inspection shall be performed in accordance with ASME N510.

        2. Housing Leak and Pressure Test

          1. The filtration system housing shall be factory leak tested in accordance with ASME N510, Section 6, using the pressure decay method. The housing shall be tested positively to the design pressure of 15 inches water gauge and have a maximum leak rate of 0.0005 cfm per cubic foot of housing volume.

        3. Damper Operation and Leakage Test

          1. The damper shall be tested to verify that it operates as specified. The air leakage rate through loose isolation dampers shall be measured and recorded. The damper shall be functionally tested as required in ASME N510.

        4. System Bypass Test

          1. The filtration element housing and housing seal shall be tested in accordance with ASME N510 with test blanks. The maximum housing leakage rate acceptance criteria shall be 0.0005 cfm per cubic foot of housing volume at 10 inches water gauge pressure differential. The air that bypasses the test blank(s) shall be measured and recorded as an air leakage rate.

    5. PREPARATION FOR SHIPPING

      1. The filtration system shall be mounted with protective shipping skids, crated or covered, blocked, braced, and cushioned as necessary to prevent physical damage during shipping.

    6. FIELD ACCEPTANCE TEST

      1. After installation, the filtration system shall be field tested for leaks using a mechanical test method. The system shall also be tested for leaks between the filter element and its housing. Testing shall occur after installation and shall be performed by an independent testing agency in accordance with ASME N510. The test agency shall be certified in accordance with ASME NQA-1 or have demonstrated previous experience with similar systems as approved by the Contracting Officer.

    7. FIELD TRAINING

      1. The Contractor shall conduct a training course for operating and maintenance personnel as designated by the Contracting Officer. The manufacturer shall determine the appropriate length of the training course. The field instruction shall cover all of the items contained in the approved Operating and Maintenance Instructions.

END OF SECTION 23 4145


CONTAINMENT FILTER HOUSING ASSEMBLIES

23 4145 -
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