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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March 2009


SECTION 23 4145 – ROOMSIDE HEPA FILTER CONTAINMENT ASSEMBLIES

PART 1 - GENERAL

    1. RELATED DOCUMENTS

      1. Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I Specification Sections, apply to this Section.

    2. WORK INCLUDED

      1. Containment filter housings

      2. Prefilters (as scheduled)

      3. High Efficiency Particulate Air (HEPA) filters

      4. Isolation dampers

      5. Differential pressure filter gages

      6. Test Shroud

      7. Test Equipment

    3. RELATED SECTIONS

      1. Examine all drawings and criteria sheets and all other Sections of the Specifications for requirements, which affect work under this Section whether or not such work is specifically mentioned in this Section.

    4. REFERENCES

      1. Applicable provisions of the following Codes and Trade Standard Publications shall apply to the work under this Section whether or not such work is specifically mentioned in this section.

        1. ASHRAE – American Society of Heating, Refrigeration and Air-Conditioning Engineers

          1. ASHRAE 52.2: Method of Testing Air-Cleaning Devices in General Ventilation for Removal Efficiency by Particulate Size (Minimum Efficiency Reporting Value)

        2. ASME – American Society of Mechanical Engineers

          1. AG-1-2003: Code on Nuclear Air and Gas Treatment

          2. NQA-1-2008: Quality Assurance Requirements for Nuclear Facility Applications (QA)

          3. N509-2002: Nuclear Power Plant Air Cleaning Units and Components

          4. N510-2007: Testing of Nuclear Air Cleaning Systems

          5. N511-2007: In-Service Testing of Nuclear Air Treatment, Heating, Ventilating, and Air-Conditioning Systems

          6. BPVC-IX-2007: Welding and Brazing Qualifications

        3. ASNT – American Society of Nondestructive Testing

          1. SNT-TC-1A (2006): Recommended Practice No. SNT-TC-1A: Personnel Qualification and Certification in Nondestructive Testing

        4. AWS – American Welding Society

          1. D9.1M/D9.1:2006: Sheet Metal Welding Code

        5. DOE – US Department of Energy

          1. HDBK-1169-2003: Nuclear Air Cleaning Handbook

        6. IEST – Institute of Environmental Sciences and Technologies

          1. IEST-RP-CC001.4: HEPA and ULPA Filters

          2. IEST-RP-CC002.2: Unidirectional Flow Clean-Air Devices

          3. IEST-RP-CC034.2: HEPA And ULPA Filter Leak Tests

        7. UL – Underwriter’s Laboratory

          1. UL 900: Air Filter Units

    5. QUALITY ASSURANCE

      1. Filter media shall be UL 900 listed, Class 2.

      2. A written quality assurance program must be established for all components of the containment filtration system and the manufacture shall meet and conform to all of the sections of the ASME NQA-1 quality assurance program.

      3. Assemble filters and housing components to form a containment filtration system from a single manufacture (excepting vended components such as differential pressure gages and valves).

    6. SUBMITTALS

      1. See Section 23 0500 and General Conditions for additional requirements.

      2. Submit product data:

        1. Bid Documents: In order to validate the filter housing offer fully meets the drawings and specification, the housing manufacturer shall furnish the following qualifying documentation with their Bid.

          1. Statement of complete scope of supply.

          2. Statement that clearly states how the scope of supply meets the specification and a listing of all non-compliant features.

          3. Supporting documentation to demonstrate specification compliance.

          4. Submit appropriate catalog cut sheets related to the bid offer.

          5. Submit validation reports for the following:

            1. R&D report validating the offered upstream test challenge injection section operates within the specified parameters

            2. Validating the automated function of the scan section.

            3. Validating the automated function of the scan section.

        2. Engineering Submittal Documents: The selected Offeror shall furnish the following documentation for Engineer Approval and Fabrication Release.

          1. Submit a copy of the project specification stating line by line compliance.

          2. Submit General Arrangement drawings for each Filter Housing size and configuration. As a minimum, the following shall be included.

          3. Overall dimensions

          4. Interface locations and sizes

          5. Housing support layout

          6. Service clearance dimensions

          7. Filter and differential pressure gage requirements for each housing tag number

          8. Submit an uncontrolled copy of the manufacturer’s Quality Assurance manual

        3. Delivery Documentation: The manufacturer shall furnish the following documentation in conjunction with their equipment delivery.

          1. Submit Housing Leak test reports

          2. Submit Seal Surface Leak test reports

          3. Submit Filter fit report

          4. Submit final as-built drawings

          5. Submit three (3) copies of Operations and Maintenance manuals

    7. EXTRA STOCK

      1. Provide one extra set of all required prefilters and HEPA filters.

    8. DELIVERY, STORAGE, and HANDLING

      1. Housings shall be shipped to the jobsite on factory fabricated protective skids or containers (if size allows). Items shall be blocked, anchored, braced and/or cushioned as deemed necessary to prevent physical damage. All openings shall be covered. The housings and filters shall be stored in a clean dry place and protected from weather and construction traffic. Housings shall be handled carefully to avoid contact with carbon steel and damage to accessory components, enclosures and finish.

PART 2 - PRODUCTS

    1. ACCEPTABLE MANUFACTURERS CONTINGENT OF COMPLIANCE WITH SPECIFICATONS

      1. Camfil Farr (Basis of Design)

      2. Substitutions

        1. Due to life safety concerns, this specification section describes highly specialized equipment and components that are known to be included in the basis of design. Equipment and component substitutions may be made at the time of bid. However, a full evaluation package shall be included with the alternate manufacture’s proposal. The offeror shall clearly state the proposed manufacturer’s offers of all equipment and components specified under this section. The offeror shall provide a complete and detailed response to each paragraph of the contract specification. The offeror shall clearly note after each specification paragraph one of the following responses: 1. comply, 2. deviate, or 3. exception. For deviation or exception responses, the offeror shall fully explain the deviation or exception. Detailed equipment drawings shall be furnished to demonstrate full compliance with the dimensional requirements shown on the contract drawings. Any deviation shall be clearly shown on the drawings of the proposed equipment. Any alternative bids not including the above required information will be rejected. The Contractor shall bear to the responsibility to furnish equipment in complete compliance with this specification. The owner or its representative reserves the right to reject any deviation or exception if it does not meet the intent or the requirements of this project.

        2. All acceptable manufacturers shall be the producer of all of the products specified in this Section. Vended products shall be limited to raw materials, fasteners, gages, damper operators and valves. The specified filters shall be produced by the same company that produces the filter housings. The offeror shall clearly identify all purchased components, weldments and assemblies from outside sources. Failure to comply shall result in the rejection of the offered product.

    2. ROOMSIDE HEPA FILTER CONTAINMENT ASSEMBLIES

      1. General

        1. Pick one of the following two options:

Option 1 (Overall Efficiency Testable): The ceiling-mounted Roomside Containment Filter Housing shall be a Camfil Farr CamContain CeilXO fully integrated packaged unit that have been fabricated, assembled and pressure decay tested in the same factory. Each system shall consist of the following housing sections and components assembled into an integrated containment system:

          1. HEPA filter section

          2. HEPA filter overall efficiency test section

          3. Outlet isolation damper

          4. Loose test shroud

Option 2 (Automated HEPA Filter Scanning): The ceiling-mounted Roomside Containment Filter Housing shall be a Camfil Farr CamCeilXS fully integrated packaged unit that have been fabricated, assembled and pressure decay tested in the same factory. Each system shall consist of the following housing sections and components assembled into an integrated containment system:

          1. HEPA filter section

          2. HEPA filter automated in-place scanning section

          3. Outlet isolation damper

          4. Loose test shroud

        1. The system shall be designed for the scheduled CFM as indicated on the contract documents at 10 inches water gage and the maximum design temperature shall be 130°F. The furnished system shall be sized not to exceed the scheduled “clean” pressure drop across the containment system from inlet opening to outlet flange, including the outlet bubble-tight dampers. The scheduled “dirty” pressure drop assumes the “clean” HEPA filter initial pressure drop times two.

        2. All pressure retaining weld joints and seams shall be continuously welded with no pores allowed. Joints and seams requiring only intermittent welds, such as reinforcement members, shall not be continuously welded. As a minimum, joints and seams shall be wire brushed and/or buffed to remove heat discoloration, burrs and sharp edges. All weld joints and seams that are a portion of any gasket-sealing surface (e.g., duct connecting flanges) shall be ground smooth and flush with the adjacent base metal.

        3. Duct Connection (Select one of the following two options)

Option 1 (Duct Connection): The hood shall have an integral duct connection collar for slip joint connection that extends a minimum of 3" [76.2mm] above the top surface. The collar shall have a raised rib to prevent flexible duct blow-off. The collar shall be continuously welded to the top of the hood.

Option 2 (Flange Connection): The downstream flange shall have a 1 ½ inch minimum flange width. Flanges shall be turned to the outside of the airstream to prevent contamination build-up and allow the customer to connect mating ductwork from outside the housing.

        1. All hardware on the HEPA filter housing and all mechanical components shall be 300 series stainless steel, except for the nylon washers, tubing, and the cast aluminum doorknobs. The scan probe assembly (if selected) shall be manufactured from chemical resistant, static dissipative polycarbonate and the flexible tubing shall be manufactured from static dissipative polyurethane. Both shall be chemically compatible with vaporous hydrogen peroxide and paraformaldehyde decontamination agents.

        2. All welding procedures, welders and welder operators shall be qualified in accordance with ASME BPVC-IX-2007: Welding and Brazing Qualifications. All production welds shall be visually inspected per AWS D9.1M/D9.1:2006: Sheet Metal Welding Code and incorporates the workmanship acceptance criteria described in sections 5 and 6.

        3. The filter housing shall be manufactured under a quality assurance program that meets all the basic requirements of ASME NQA-1, “Quality Assurance Program Requirements for Nuclear Facilities”. The manufacture shall submit documented evidence they have been independently audited by customers at least three (3) times within the last three (3) years to ASME NQA-1 requirements, and successfully passed all three (3) audits. The final containment filtration system shall be completely fabricated, assembled, tested and cleaned at the manufacturer’s facility. Sub-assemblies from outside sources will not be acceptable. The Offeror shall certify their compliance with this paragraph.

        4. The filter housing shall be tested for filter fit, operation of the filter clamping mechanism, and knife edge alignment and leak tightness before leaving the factory. Both the filter sealing surface and the complete assembly pressure boundary shall be leak tested by the “Pressure Decay Method”, in accordance with N510-2007 - Testing of Nuclear Air Cleaning Systems, paragraphs 6 and 7. Pressure readings are recorded once a minute until pressure decays to 75% of the test pressure or for 5 minutes, which ever comes first. There shall be a maximum leak rate of 0.0005 CFM per cubic foot of housing volume at 10 inches water gage.

      1. Linear Isolation Damper

        1. The housing shall incorporate a factory installed isolation damper, consisting of a "knife-edge" permanently attached to the interior of the hood body and an adjustable, inverted dish-shaped damper with an integral gel track. The knife edge shall be continuously welded to the hood body to eliminate the potential for bypass leakage around the knife edge. The use of RTV or other sealants to seal the knife to the hood body is prohibited.

        2. The adjustable dish and mechanisms shall be fabricated from stainless steel.

        3. The damper control rod shall be operated by using a 7/16" nut driver and shall be accessible from the room side of the hood when the filter is installed.

        4. A damper position indicator shall be visible from the room side while the filter is installed.

        5. The linear damper design shall be manufactured in accordance with ASME NQA-1 and ISO9001:2000. A qualified design shall pass the above specified leak test requirements without any adjustments to the assembly (including the gasket). Evidence of a successfully qualified design shall be furnished prior to bidding.

        6. The damper blade shall be tested in the closed position at 10” water gage and shall be bubble tight when tested in accordance with ASME N509-2002, paragraph 5.9.7.3. The complete pressure boundary (damper housing) shall be leak tested by the “Pressure Decay Method” in accordance with ASME N510-2007, “Testing of Nuclear Air Treatment Systems”, paragraphs 6 and 7. Pressure readings are recorded once a minute until pressure decays to 75% of the test pressure or for 5 minutes. There shall be a maximum leak rate of 0.0005 CFM per cubic foot of housing volume at 10 inches water gage.

        7. All bubble tight isolation dampers shall be designed and fabricated by the HEPA containment filter assembly manufacture.

      2. HEPA Filter Section

        1. The HEPA filter section shall be a fluid seal design, which incorporates a knife-edge that mates into the fluid filled perimeter channel on the face of the filter. Access to the filters shall be from the roomside of the housing. Prior to leaving the factory, each knife-edge shall be checked with an alignment gage to insure proper alignment with the filter. The mechanism shall exert equal force around the perimeter edge of the filter when engaging or disengaging the filter at the knife-edge.

        2. A minimum of four (4) feet clearance below the face of HEPA filter containment assembly shall be reserved for filter replacement and in-place testing.

      3. Grille

        1. Flush Hinge with 1/4 Turn Fastener Grille

        2. The grille shall be the flush-mounted type, manufactured from 20-gauge, perforated 304 stainless steel, 2B finish, with a minimum of 40% open area. The perimeter flange of the grille shall be solid, unperforated and shall not be hemmed. One side of the grille shall be hinged using stainless steel hinges which allow for grille removal in the field. The opposite side of the grille shall utilize stainless steel 1/4-turn fasteners to secure the grille.

      4. Decon Port Assemblies

        1. These ports shall be installed on each filter train as shown on the drawings and shall be compatible with the User’s decontamination equipment. Unless otherwise specified, each port shall consist of a reinforcement plate welded to the housing side wall, 1 inch IPS Schedule 40, stainless steel pipe nipple, 1” stainless steel ball valve and 1 inch female IPS aluminum hose connection with dust plug.

      5. Differential Pressure Gages

        1. Differential pressure gages shall be Dwyer Series 2000 Magnehelic pressure gage or equal. Unless otherwise indicated select gage scale ranges to read at 75 percent full range (rounded up) at the expected dirty filter pressure drop.

        2. The gage range shall be 0-1” w.g.

        3. Gages shall be furnished for each filter bank, including gauges across each individual filter bank in built-up rack assemblies, suitable for flush mounting in a panel. All sensing tubing shall be 1/4 inch I.D polyurethane tubing.

        4. Differential Pressure Gage Ports

          1. Static pressure ports shall be located on the filtration unit upstream and downstream of the HEPA filter. The port connections shall be ¼ inch 300 series stainless steel pipe half-couplings.

      1. Hanging Tabs

        1. Hanging tabs shall be fabricated from 304L stainless and permanently welded to the housing.

        2. All portions shall be free of sharp edges and burrs. Four (4) tabs are required for each housing.

      2. Trim (Pick one of the following three options)

Option 1:

        1. Removable Ceiling Adapter Perimeter Trim Assembly

          1. Removable perimeter trim shall be fabricated from 16-gauge, 304L stainless steel. Interfaces between adjacent side and end pieces shall be continuously welded to created a single assembly. The perimeter trim shall be 2 1/2" [63.5mm] wide and the corners shall be radiused in order to eliminate sharp edges. Finish shall be #3.

          2. Perimeter trim shall be suitable for hard surface ceiling system. The flatness of the horizontal perimeter flange of the removable stainless steel trim must be within 1/16" (0.062").

Option 2:

        1. SRT Removable Perimeter Trim Assembly

          1. Removable perimeter trim shall be fabricated from 14-gauge, 304L stainless steel. Interfaces between adjacent side and end pieces shall be continuously welded to created a single assembly. The perimeter trim shall be 1 1/2" [38.1mm] wide and the corners shall be radiused in order to eliminate sharp edges. Finish shall be #4.

          2. Perimeter trim shall be suitable for hard surface ceiling system. The flatness of the horizontal perimeter flange of the removable stainless steel trim must be within 1/16" (0.062") [1.6mm].

Option 3:

        1. PT-Type Perimeter Trim

          1. Permanent perimeter trim shall be skip welded to the CamConceil hood body. The perimeter trim shall be 5/8" [15.9mm] wide and sharp edges shall be removed from the corners.

          2. Perimeter trim shall be suitable for T-Bar ceiling system. The trim can provide a sealing surface to the T-Bar with gasket (provided by the T-Bar manufacturer) or with Dow Corning 732 provided by the installer.

      1. Banding Kit

        1. One complete banding kit shall be provided with the filtration unit(s) equipped with a bag-in/bag-out assembly. The banding kit shall provide a secure clamping of the bag between the housing and the spent filtration element. Each kit shall contain a heavy duty tie-banding tool, a bag cutting tool, 1/4 inch socket wrench w/ 3 inch long extension, 1-5/16 inch hex socket, a 13 inch cinching strap with buckle fastener, a set of ten (10) 100 pound tensile strength 14 inch long plastic ties, a set of twenty (20) stainless steel bands, and a plastic case/apron. The banding kit and change-out bags shall be manufactured by the same manufacturer as the housing. Additional tools required to complete the bag-in/bag-out procedure shall also be provided.

Automated Scan Test Equipment (Select one of the following three options)

Option 1:

    1. Modular Fully Automated Scanning Control System

          1. The control system shall perform three main functions:

            1. Perform data acquisition while operating an internal scanning device and display real time data through various embedded calculations and print test reports.

            2. Perform data acquisition during a pressure decay test on the containment housing using the control system and print test reports with the pass/fail results.

            3. Perform a valve cycle in which a decontamination agent will be circulated through the sampling system.

          2. The control system must be 21CFR11 compliant and UL/CE certified.

          3. The modules the Control System include:

            1. Motion Control with a Servo Drive, Servo Controller, Operation Panel and the necessary ancillary equipment

            1. Valve Control with the Particle Counter, Dilutor & Operation Panel.

            2. IPC Control Unit with touch screen interface and secure database.

          1. The individual modules shall be installed in stackable enclosures.

          2. The modular design shall permit upgrades to the Control System at any time.

          3. The Visual Interface for all modules shall be facilitated by an Industrial PC with Touch-Screen and/or Operation Panels on individual modules.

          4. Data communication between modules shall be accomplished via ETHERNET.

          5. Enclosure System

            1. The Enclosure for each module shall be a Rack System including an additional aluminum box for ancillary equipment.

          1. Common

            1. Electrical components

              1. All electrical components used shall conform to UL 508.

              2. All installation and documentation shall conform to NFPA 79.

              3. The equipment shall be certified to CE-Standards

              4. All wires and components shall be labeled.

            1. Documentation

              1. All documentation shall be written and delivered in English:

              2. Specifications in compliances to 21 CFR, Part 11

              3. Circuit diagrams as CAD files and PDF

              4. User Manual – in compliance with 21 CFR, Part 11

              5. All documentation regarding used components

              6. Software and documents hardcopy and CD-ROM.

Option 2:

    1. Fully Upgradeable Motion Control Box

          1. Unit shall be a portable electronic control device of rugged construction which operates the scanning mechanism within a CamContain, CamContain Ceil-XS, and CamVent containment housings.

          2. Unit shall operate on 120VAC-60Hz and utilize a servo motor with an integrated coupling adaptor for interface with the internal scanning mechanism in the containment housings.

          3. Unit shall incorporate a touch-screen Human/Machine Interface (HMI) panel for display and entering of configuration data such as scan speed, step distance, maximum travel and torque limit. Unit shall communicate with limit switches via a communication cable between the control unit and the containment housing.

          4. The HMI shall display at all times the current position of the scan probe and the current status of the containment housing internal limit switches, if applicable. The unit shall incorporate at least 3 safety features to protect the scanning mechanism inside the containment housings.  The HMI shall have latching and momentary control buttons for the control of the scanning mechanism.  Unit shall be fully upgradeable to the complete CamControl System via LAN and ComLink cables with the addition of the CamControl Industrial PC Control Module and the CamControl Valve Module. 

          5. Unit shall not require any additional programming or configuration data to operate as a plug and play device when integrated with the complete CamControl System.

Option 3:

    1. Motion Control Lite

      1. Unit shall be a portable electronic control device of rugged construction which operates the scanning mechanism within a CamContain, CamContain Ceil-XS, and CamVent containment housings.

      2. Unit shall operate on 120VAC-60Hz and utilize a servo motor with an integrated coupling adaptor for interface with the internal scanning mechanism in the containment housings. 

      3. Unit shall incorporate an Human/Machine Interface (HMI) panel for display and entering of scan configuration data such as scan speed, step distance, maximum travel, and torque limit.

      4. Unit shall communicate with limit switches via a communication cable between the control unit and the containment housing.

      5. The HMI shall display at all times the current position of the scan probe and the current status of the containment housing internal limit switches, if applicable.  The unit shall incorporate at least 3 safety features to protect the scanning mechanism inside the containment housings.  The HMI shall have latching and momentary control buttons for the control of the scanning mechanism. 

      6. Fittings shall be provided to attach sampling hose to the quick disconnect hose couplings on the containment housings to the particle measuring device (by others) used during the scan test.



    1. TEST SHROUD

      1. Camfil Farr Universal Test Shroud required. Shroud body/plenum and dispersion plate shall be fabricated of 16 ga STAINLESS STEEL. Shroud shall be equipped with ports/tubing enabling personnel to inject, mix, and obtain upstream/downstream samples of challenge agent from the room side. Shroud to be validated and proven capable of testing for efficiency in accordance with IEST-RP-CC-007, ensuring filter meet IEST-RP-CC-001 Type A performance level. Shroud shall incorporate decon port for closed loop decontamination.

    1. FILTERS

      1. Prefilters

        1. General

          1. Material: Hi-loft nonwoven, polyester

          2. Base Weight: 6.80 oz/yd² ( 231 g/m² ) ±10% per ASTM D 3776

          3. Thickness: 0.960 in ( 24.4 mm ) ±10% per ASTM D 5729

      2. HEPA Filter

        1. General

          1. Air filters shall be high-efficiency, individually tested and certified panel filters consisting of aluminum enclosing frame, low-outgassing sealant, continuous filament pleat separators and micro glass media filter pack.

          2. Sizes shall be as noted on drawings or other supporting materials.

        2. Construction

          1. Filter shall be manufactured in a Class 10,000 (M5.5, ISO Class 7) cleanroom and tested in a Class 100 (M3.5, ISO Class 5) clean space.

          2. Filter media shall be one continuous pleating of micro glass fiber media formed into a uniform pack depth of 100 MM.

          3. Pleat spacing shall be by continuous glass filament separators to prevent media-to-media contact and promote uniform airflow through the media pack.

          4. The media pack shall be completely encapsulated in a polyurethane sealant creating a rigid self supporting pack. The sealant shall be low out gassing, fire-retardant and self-extinguishing.

          5. The enclosing frame, of anodized aluminum profiles, shall be joined together with secure internal corner clips to form a rugged and durable enclosure.

          6. Overall dimensional tolerance shall be correct within +0, -1/8”, and square within 1/4”.

          7. Gaskets, unless otherwise noted, shall be low outgassing cleanroom grade cellular urethane foam.

          8. Corners shall be dovetailed to form an interlocking joint and positive seal.

        3. Performance

          1. The filter shall be identified on a label indicating minimum efficiency, tested airflow and pressure drop. The unit shall be bar code serialized for individual unit identification.

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 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 isolation dampers, transitions and/or plenums, housings, test sections and mounting stands 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.

      2. 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.

      3. System Integrity Tests

        1. 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 10 inches water gauge and have a maximum leak rate of 0.0005 cfm per cubic foot of housing volume.

        2. 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.

      2. HEPA filter shall be tested for overall efficiency in accordance with IEST-RP-CC034.2 and must not be less than 99.99% at 0.3 µm.

    7. FIELD TRAINING

      1. The Contractor shall conduct a training course for operating and maintenance personnel as designated by the Contracting Officer. Training shall be provided for a period of four (4) hours of normal working time and shall start after the system is functionally complete but prior to the performance tests. The field instruction shall cover all of the items contained in the approved Operating and Maintenance Instructions.

END OF SECTION 23 XXXX


ROOMSIDE HEPA FILTER CONTAINMENT ASSEMBLIES

23 4145 -

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