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




Скачать 81.87 Kb.
НазваниеDrawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections
страница1/2
Дата09.10.2012
Размер81.87 Kb.
ТипДокументы
  1   2
SECTION 23 4145 - CONTAINMENT FILTER HOUSING 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

      3. High Efficiency Particulate Air (HEPA) filters

      4. High Efficiency Gas Adsorbers (HEGA)

      5. Differential pressure filter gages

    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.

      2. Refer to Section 23 4100 for HEPA filters to be furnished by the containment manufacturer.

    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.

      2. 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




        1. DOE – US Department of Energy

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

        2. 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-CC008.2: Gas-Phase Adsorber Cells

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

        3. UL – Underwriter’s Laboratory

          1. UL 900: Air Filter Units

    1. QUALITY ASSURANCE

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

      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 Basic 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).

    2. 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.

          3. A listing of all non-compliant features.

          4. Supporting documentation to demonstrate specification compliance.

          5. Submit appropriate catalog cutsheets related to the bid offer.

          6. 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.

        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.

            1. Overall dimensions

            2. Interface locations and sizes

            3. Mounting base anchor bolt plan

            4. Service clearance dimensions

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

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

        3. Delivery Documentation: The Filter Box 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

    3. EXTRA STOCK

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

      2. Provide two extra sets of all required PVC change-out bags and straps.

    4. 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 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 sheet metal materials, fasteners, gages, damper operators and valves. The specified filters shall be considered a vended product and 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. BAG-IN/BAG-OUT CONTAINMENT FILTER HOUSINGS

      1. General

        1. The Containment Filter Housing Assemblies shall be Camfil Farr series GB gasket seal Bag-in / Bag-out housing units, 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 a complete containment system:

          1. flanged inlet transition

          2. Prefilter section

          3. in-place test injection section

          4. HEPA filter section

          5. HEPA filter section

          6. in-place test sampling section

          7. outlet transition

          8. assembly welded on to a mounting structure

        2. The system shall be designed for the scheduled CFM as indicated on the contract documents at 15 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 flange to outlet flange, including the inlet and outlet bubble-tight dampers. The scheduled “dirty” pressure drop assumes the “clean” HEPA filter initial pressure drop times two.

        3. Sealing Mechanism

          1. All high efficiency filters and adorbers shall be mechanically sealed by means of a compressible gasket fixed to the filtering device.

          2. The filter sealing mechanism shall be replaceable.

          3. The filter clamping mechanism shall be operated from outside of the housing by means of a standard wrench.

          4. The filter clamping mechanism shall be designed with mechanical stops. When the mechanism has reached the mechanical stop, it shall be fully engaged and the clamping shall be exerted solely by means of its pressure compensating springs. The clamping mechanism shall include two pressure channel assemblies with eight (8) springs per filter for full-width filters (nominal 24” wide and shall exert a minimum filter sealing force of 1,400 pounds for full high, full wide filters. The force shall be applied as an even, uniform load along at least 80 percent of the top and bottom of each filter outer frame. The clamping assembly shall penetrate through the housing wall and shall be sealed airtight.

        4. Bagging Ring

Each filter housing section shall have a bagging ring around each access port. The bagging rings shall have two (2) continuous ribs to secure the PVC filter change-out and scan bags. The outer edge of the ring shall be hemmed to prevent the PVC bag from tearing.

        1. Access Doors

          1. The filter access port shall be covered with an access door. Each access port and bagging ring shall be covered by an access door having an extruded silicone gasket that is replaceable (if damaged) after the door has been removed. When closed, the door shall not press against the bag-out port and PVC bag, thus eliminating the possibility of the bag being cut by pressure from the door to the bag and bag-out port.

          2. There shall be four (4) tie down latches per access door. Each latch assembly shall comprise of a 300-series threaded stud and an aluminum star knob. The access door shall be provided a means to fit over the threaded stud array and shall be sealed against the filter housing front by tightening the star knobs.

        2. Orientation and Handedness

The contract drawings shall determine the filter access side of each housing. The handedness of a housing shall be designated as right hand or left hand. When looking in the direct of airflow (i.e. as if standing inside of the housing with the air flow hitting the person’s back) of the HEPA filter, if access is required on the right side, then the housing shall be determined to be right hand access. If access is required on the left side from the above stated vantage, then the housing shall be determined to be left hand access.

        1. Filter Removal Rods

Multi-wide filter housing sections shall be equipped with a filter removal rod to draw the filters to the change-out position. The removal rod shall be operated from inside the change-out bag and shall remove the filter by pulling against the bottom of the filter frame. There shall not be any penetrations through the housing for operation of the removal rod. All change- out operations shall be within the bag so there is a barrier between the worker and filter at all times.

        1. Hardware

All hardware on the filter housing such as the filter clamping mechanism components, door handles, door studs, and labels, shall be 300 series stainless steel. The threaded pivot blocks in the filter clamping mechanisms shall be brass. The filter access door knobs are cast aluminum (to prevent galling of threads).

        1. Flanges

The upstream and downstream flanges 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 of the housing.

        1. Welding

          1. 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.

          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.

        1. Quality Assurance

          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. Additionally, filter housing shall be manufactured under a quality assurance program that meets all of 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 six (6) 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.

          2. The filter housing shall be factory tested for filter fit, operation of filter clamping mechanism, and seal surface tested for flatness. 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. The filter sealing surface shall be tested at +10" water gage and have a maximum leak rate of 0.0005 cfm per cubic foot of housing volume. The overall system pressure boundary shall be leak tested at +15" water gage and have a maximum leak rate of 0.0005 cfm per cubic foot of housing volume.

        1. Service Clearance

A minimum of four (4) feet clearance in front of each access door on the HEPA containment filter assembly shall be reserved for filter replacement and in-place testing.

      1. Upstream Aerosol Mixing Section

        1. The upstream test section shall be designed to perform aerosol test on HEPA filters, and vapor test on carbon adsorbers. Test section shall have injection pipes for injection of aerosol or vapor, and sample pipes to obtain representative sample concentrations upstream, when testing filters/adsorbers. The test section shall be able to perform the applicable acceptance or surveillance test as required per the intent of ASME N510-2007. Maximum pressure drop through the test section shall be 0.25" water gage at 1,000 cfm.

        2. Rotating or swing-away baffle plates and diffusers do not adequately represent actual operating conditions. As such, these devices are not acceptable and shall not be offered. The manufacturer shall provide detailed validation reports demonstrating compliance with IEST-RP-CC034.2 for aerosol uniformity for both conventional HEPA filters and carbon adsorbers when operated at rated their flow rates and 20% of their rated flow rates.

      1. Downstream Aerosol Mixing Section

        1. The downstream test section shall be designed to perform aerosol test on HEPA filters, and vapor test on carbon adsorbers. Test section shall have injection pipes for injection of aerosol or vapor, and sample pipes to obtain representative sample concentrations downstream, when testing filters/adsorbers. The test section shall be able to perform the applicable acceptance or surveillance test as required per the intent of ASME N510-2007. Maximum pressure drop through the test section shall be 0.25" water gage at 1,000 cfm.

        2. Rotating or swing-away baffle plates and diffusers do not adequately represent actual operating conditions. As such, these devices are not acceptable and shall not be offered. The manufacturer shall provide detailed validation reports demonstrating compliance with IEST-RP-CC034.2 for aerosol uniformity for both conventional HEPA filters and carbon adsorbers when operated at rated their flow rates and 20% of their rated flow rates.

      1. Prefilter Section

The prefilter housing shall be Camfil Farr PB-series bag-in/bag-out housing. The housing shall be adequately reinforced to withstand a negative or positive pressure of 15" water gage. The housing shall be side-servicing for filter installation and change-out. Housing design and filter arrangement shall allow air to enter and exit housings without changing direction. The housing shall accommodate standard size filters that do not require any special attachments or devices to function properly in the housing.

      1. HEPA Filter Section

The HEPA filter section shall be Camfil Farr GB-series bag-in/bag-out housing. The housing shall have a gasket seal design, which incorporates a flat sealing surface that mates into the gasketed perimeter channel on the face of the filter. Access to the filters shall be from the side of the housing.

      1. HEGA Adsorber Section

The HEGA section shall be Camfil Farr GB-series bag-in/bag-out housing. The housing shall have a gasket seal design, which incorporates a flat sealing surface that mates into the gasketed perimeter channel on the face of the adsorber. Access to the filters shall be from the side of the housing.

    1. COMMON HOUSING ACCESSORIES

      1. Transitions

        1. Each containment system shall be fitted with reducing transitions.

        2. Transitions shall be constructed of unpainted 304L stainless steel and designed with reinforcement to withstand a negative or positive working pressure of 10” water gauge. The minimum acceptable sheet metal thickness shall be 16-gauge. They shall be attached to the filter system by continuous seal welding. The adjoining connection to the transition shall be a 1 ½” inch wide 7-gauge plate flange.

      2. Decontamination Port Assembly

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, 3 inch IPS Schedule 40, stainless steel pipe nipple, 3 inch IPS stainless steel pipe flange, 3 inch IPS butterfly valve and 3 inch female IPS aluminum hose connection with dust plug. The butterfly valve shall be wafer style, lever operated, and shall be bubble-tight at 150 psi. It shall have a cast iron body, aluminum bronze disc, stainless steel stem and EPDM seat.

      1. Weather Cover

        1. Filtration systems located in unsheltered areas shall be protected by use of an integral weather cover. The weather cover shall be constructed of the same material as the filter housing and intermittently welded to the filter housing.

        2. If differential pressure gages are included on the filter housing assembly, they shall be covered with the same material as the filter housing. A means to access the gages shall be provided.

      2. Change-out Bags

        1. One (1) PVC change-out bag shall be furnished for each access port. Each bag shall have its stock number rolled in the hem. The PVC bag material shall be 8 mil thick, yellow in color, with a translucent, taffeta textured finish and shall not stick together.

        2. For visibility during filter change-out, this bag shall include approximately 16 inches of clear PVC at the mouth. Three (3) glove sleeves shall be built into the bag to facilitate handling the filter during change-out.

        3. All PVC bags of this design shall be produced by filter housing manufacturer and shall have been tested by an independent laboratory to prove the bag's operability at extreme temperature ranges of 0°F - 130°F (a test report verifying this test shall be furnished upon request). A 3/16-inch diameter elastic shock cord shall be hemmed into the mouth of the bag so that it fits securely when stretched around the bagging ring. To prevent the bag from sliding off the bagging ring during the change-out operation, one (1) nylon security strap shall be provided with each filter access port. Additionally, one (1) nylon cinching strap shall be provided with each access port to tie off the slack in the PVC bag while the ventilation system is operating.

      3. 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 the following items:

          1. heavy duty tie-banding tool

          2. bag cutting tool

          3. ¼ inch socket wrench w/ 3 inch long extension

          4. 1-5/16 inch hex socket

          5. 13 inch cinching strap with buckle fastener

          6. set of ten (10) 100 pound tensile strength 14 inch long plastic ties

          7. set of twenty (20) stainless steel bands

          8. plastic case/apron

        2. The banding kit and the 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.

      4. 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. Typical ranges follow:

          1. Filters with 25 to 30% efficiency 0 - 1.0 inches water column
            based on atmospheric dust spot
            test

          2. Filters with 31 to 99% efficiency 0 - 3.0 inches water column
            based on atmospheric dust spot

          3. HEPA filters 0 - 3.0 inches water column

          4. HEGAs 0 - 3.0 inches water column

        2. Gages shall be furnished for each filter bank, including gages across each individual filter bank in built-up rack assemblies, suitable for flush mounting in a panel. All sensing tubing shall be ¼ inch O.D. 300-series stainless steel tubing.

        3. Differential Pressure Gages Ports

Static pressure ports shall be located on the filtration unit upstream and downstream of each prefilter, HEPA filter, HEGA and Overall System banks. The port connections shall be 1/4 inch 300 series stainless steel pipe half-couplings.

        1. In-Line Gage HEPA Filters

          1. In-line gage HEPA filter shall be Camfil Farr Gage Guardian air filter, designed to protect diaphragm pressure indicating instrumentation (i.e. Magnehelic Gages, Photohelic Gages, etc.) from particulate contaminants.

          2. Due to life safety concerns, and considering that the integrity of the pressure boundary of these filters is as critical as that of the containment housing, each filter shall be factory tested to assure it is leak free and bubble-tight at a pressure of +20” w.g. by submerging the entire filter assembly in water, pressurizing the assembly to +20” w.g. and visually inspecting for leaks. The presence of a single bubble generated by this method constitutes a leak. Each filter shall have a label indicating that it was leak tested. The filter media shall be hydrophobic with a minimum efficiency of 99.9995%. The filter body shall be manufactured from T-304 stainless steel with silicone gaskets or O-rings to ensure long service life. All wetted surfaces of the filter shall be chemically compatible with vaporous hydrogen peroxide and paraformaldehyde decontamination agents.

        2. Gage Decontamination Ports

These ports shall be installed in the gage lines between the containment housing and gage(s) as shown on the drawings and shall be compatible with commercially available vaporous hydrogen peroxide and paraformaldehyde decontamination systems. Each port shall consist of a stainless steel ball valve with a 3/8” female NPT connection allowing for connection to commercially available paraformaldehyde or vaporous hydrogen peroxide decontamination system to enable decontamination of the gage lines and in-line HEPA filter.

        1. Gage Calibration Line

As shown on the drawings, stainless steel shutoff valves shall be provided to isolate each gage from the process stream. A stainless steel equalization valve shall be installed between the high and low pressure sides of each gage in such a manner that when the shutoff valves are closed, and the equalization valve is open, the pressure across the gage equalizes for calibration purposes without the possibility of venting to the ambient space. Shutoff and equalization valves shall be 300 series stainless steel.

      1. Lifting Lugs

        1. Lifting lugs shall be provided on the housing as required. Lifting lugs shall be fabricated from ¼ inch plate of the same material as the housing. Lifting lugs shall have a minimum of 1 ½ inch diameter eyeholes and be located on the top and side of the housing. Lifting lugs shall be capable of supporting the housing (less adsorbers and filters) without causing housing deflection during transport and installation.

        2. All portions shall be free of sharp edges and burrs. Six (6) lifting lugs are required on each double HEPA assembly, and four (4) on each single HEPA assembly.

      2. Filter Change-out Tray

Camfil Farr shall provide a filter change-out tray to aide in filter installation and removal or in the Bag-in/Bag-out procedure. All of the components of the change-out tray shall be type 304L stainless steel. The tray assembly shall be securely fastened to the housing. The tray shall be designed to withstand the load of (1) filter and shall be installed over the top two door studs and use the existing hardware. One (1) tray per filter size shall be furnished.

    1. FILTERS

      1. Prefilters

        1. General

          1. Filter shall be Camfil Farr 30/30 or equal.

          2. Air filters shall be medium efficiency ASHRAE pleated panels consisting of cotton and synthetic media, welded wire media support grid, and beverage board enclosing frame.

          3. Sizes shall be noted on drawings or other supporting materials.




        1. Construction

          1. Filter media shall be a cotton and synthetic blend, lofted to a uniform depth of 0.15”, and formed into a uniform radial pleat.

          2. A welded wire grid, spot-welded on one-inch centers and treated for corrosion resistance shall be bonded to the downstream side of the media to maintain radial pleats and prevent media oscillation.

          3. An enclosing frame of no less than 28-point high wet-strength beverage board shall provide a rigid and durable enclosure. The frame shall be bonded to the media on all sides to prevent air bypass. Integral diagonal support members on the air entering and air exiting side shall be bonded to the apex of each pleat to maintain uniform pleat spacing in varying airflows.

        2. Performance

          1. The filter shall have a Minimum Efficiency Reporting Value of MERV 8 when evaluated under the guidelines of ASHRAE Standard 52.2-2007. It shall also have a MERV-A of 8 when tested per Appendix J of the same standard. The media shall maintain or increase in efficiency over the life of the filter.

          2. Initial resistance to airflow shall not exceed 0.31” w.g. at an airflow of 500 fpm on 2” deep models respectively.

          3. The filter shall be classified by Underwriters Laboratories as UL Class 2.

          4. Manufacturer shall provide evidence of facility certification to ISO 9001:2000.

          5. Manufacturer shall guarantee the integrity of the filter pack to 2.0” w.g.

        3. Supporting Data

          1. Provide product test report including all details as prescribed in ASHRAE Standards 52.2, including Appendix J.

      1. HEPA Filter (Very High Capacity)

        1. General

          1. Air filters shall be Camfil Farr model Filtra 2000 or engineer-approved equal. Air filters shall be absolute grade HEPA filters consisting of pleated media packs assembled in a V-bank configuration, polyurethane sealant, anodized aluminum enclosure and seamless sealing gasket.

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

        2. Construction

          1. Filter media shall be micro fiber glass formed into minipleat pleat-in-pleat V-bank design.

          2. The media packs shall be potted into the enclosing frame with fire retardant polyurethane sealant.

          3. An enclosing frame of anodized extruded aluminum shall form a rugged and durable enclosure.

          4. The filter shall be a gasket seal type with a poured-in-place seamless sealing gasket included on the downstream side of the enclosing frame to form a positive seal between the filter and the filter housing.

        3. Performance

          1. Filter efficiency shall be 99.99% when evaluated according to the IEST Recommended Practice. Each filter shall be labeled as to tested performance.

          2. Initial resistance shall be 1.0” w.g. target at rated airflow.

          3. Filter shall be qualified as UL 586 and UL 900 Class 2 per Underwriters Laboratories.

          4. Manufacturer shall provide evidence of facility certification to ISO 9001:2000.

        4. Supporting Documentation

          1. The filter shall be labeled as to tested efficiency, rated/tested cfm, pressure drop and shall be serialized for identification.

      2. High Capacity Gas Adsorber (HEGA)

        1. General

          1. Carbon adsorber shall be Camfil Farr model number CF-G-242416-121-TP High Efficiency Gas Adsorber (HEGA). Size shall be 24" x 24" x 16" (actual) and shall contain twelve (12) 1" deep beds, arranged in a V-bank configuration.

          2. Adsorber shall be constructed of combustible high impact polystyrene for disposal by incineration. The adsorber screens shall be perforated and supported by external spacers to prevent distortion during filling with carbon.

        2. Construction

          1. Adsorber shall be constructed of combustible high impact polystyrene for disposal by incineration. The adsorber screens shall be perforated and supported by external spacers to prevent distortion during filling with carbon.

          2. Adsorbent bed depth shall be 1”.

          3. Each adsorber shall be filled with 12x30 mesh ASZM-TEDA carbon.

          4. Adsorber shall have a 1/4" thick neoprene gasket on the sealing side.

        3. Performance

          1. The adsorber shall have a residence time of 0.115 seconds at 1250 cfm, with an approximate pressure drop of 1.25" water gage (±20%), with a maximum operating temperature of 120°F.

          2. The filled weight of adsorber is approximately 148 Ibs. each. Each adsorber is tested and packaged in accordance with IEST-RP-CC-008.2, to assure a minimum mechanical efficiency of 99.9%.

          3. Toxic gas life testing is not required for this media.

          4. Manufacturer shall provide evidence of facility certification to ISO 9001:2000.

  1   2

Похожие:

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

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

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

Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections iconNote to Specifier: Revise this specification section to suit project requirements. This specification section includes the use of mechanical deck fasteners and

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

Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections iconSection I general Pathology 2 3

Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections iconChapter 1, "General Provisions"
Статья Article Таможенное регулирование в таможенном союзе Customs regulation in the Customs Union
Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections iconNew York State, in preparing its Consolidated Plan for 2011-2015, has addressed the following general requirements specified in 24 cfr sections 91. 10, 91. 110

Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections iconAD104 Introduction to Design Practice Section 1: General Information

Drawings and general provisions of the contract, including General and Supplementary Conditions, Section 23 0500 and other Division I specification Sections iconAD102 Ideas Generation in Visual Communication Section 1: General Information

Разместите кнопку на своём сайте:
Библиотека


База данных защищена авторским правом ©lib.znate.ru 2014
обратиться к администрации
Библиотека
Главная страница