Items_Specifications_Adsorbers_W911SR-19-Q-CARB.pdf

CELL, GAS PHASE, PLEATED CARBON ADSORBERS

1. SCOPE

This specification covers the requirements for procurement of pleated carbon style gas phase adsorber cells used to remove toxic chemical vapors. The pleated carbon adsorber shall use high activity carbon that meets the testing requirements of this specification.

1.1 For the number of ready-to-use adsorbers delivered to the U.S. Army Edgewood Chemical

Biological Center (USA ECBC) refer to solicitation W911SR-19-Q-CARB.

1.2 Adsorber cells shall be 100% factory Freon (R134a) tested as required by the manufacturer.

The airflow resistance shall have been tested at the rated airflow. Alternate parameters for subject test may be submitted by the manufacturer to the Government for approval. The designated adsorber cells for destructive testing will have been challenged with DMMP at 250 mg/m3 (at rated flow rate) to a breakthrough concentration of 0.1 mg/m3.

2. INSPECTION/ACCEPTANCE OF ADSORBERS

Product data/specification sheet shall be submitted to adequately demonstrate compliance with contract requirements for the following:

Pleated Carbon Adsorber design drawings and significant interface dimensions

Media Material Safety Data Sheet (MSDS)

3. REQUIREMENTS

3.1 Adsorber Cell Construction. All filter case materials shall meet the minimum strength and corrosion properties of 20 GA galvanized steel, of box style or header style, with dimensions indicated. Dovetail gaskets shall be applied to the upstream side of each adsorber (for the header style also apply a gasket to the downstream side of the header flange) with neoprene based adhesive that is self-extinguishing per ANSI B132.1. Minimum operating temperature will be –20 °F and the maximum operating temperature will be 120 °F. The approximate final weight of the adsorber cell will not weigh more than:

60 pounds for the 23 3/8 inches W x 23 3/8 inches H x 11.5 inches D box style adsorber 55 pounds for the 23 3/8 inches W x 23 3/8 inches H x 11.5 inches D header style adsorber 55 pounds for the 19 3/8 inches W x 23 3/8 inches H x 11.5 inches D box style adsorber 45 pounds for the 11 3/8 inches W x 23 3/8 inches H x 11.5 inches D box style adsorber

3.2 Materials. If another material is used other than those materials specified herein, that material shall meet equivalent development performance requirements as the material it replaces, and it shall be approved by the Government prior to use by the contractor. At the time of disposal, materials shall not be a Resource Conservation Recovery Act hazardous waste as defined in 40 CFR 261.21-

261.24 or 40 CFR 261.33.

3.2.1 Gasket. Dovetail Gasket Seal (mounted on upstream side) The gasket shall be capable of meeting the minimum physical property requirements of ASTM D1056-91, Type 2 - closed cell rubber, Class C - oil resistant with medium swell, Grade 3- having compression-deflection range of 9 to 13 pounds per square inch (psi), or an approved, alternate Grade. Alternative gasket material(s) may be approved, such as materials consisting of Neoprene, ethylene propylene diene monomer (EPDM), ethylene propylene termonomer (EPT), Polyethylene, Butyl rubber, or silicone meeting the requirements of ASTM D6576. Gasket thickness shall be ¼ inch. Impermeable to conventional blood, blister, choking, and nerve warfare agents.

3.3 Performance.

3.3.1 Pressure Drop. The pressure drop of the box style adsorber cells shall be a maximum of 1.0 inches water gage (IWG) at standard conditions.

1,800 ACFM for the 23 3/8 inches W x 23 3/8 inches H x 11.5 inches D box style adsorber 1,550 ACFM for the 23 3/8 inches W x 23 3/8 inches H x 11.5 inches D header style adsorber 1,500 ACFM for the 19 3/8 inches W x 23 3/8 inches H x 11.5 inches D box style adsorber 850 ACFM for the 11 3/8 inches W x 23 3/8 inches H x 11.5 inches D box style adsorber

3.3.2 Adsorber Cell Freon Leakage Test (R-134a). The downstream concentration of the leak tracer vapor shall not exceed 0.1 percent of the upstream concentration.

3.3.3 DMMP Gas Life Capacity. Each selected adsorber cell per Paragraphs 1.2 and 1.3 shall be destructively tested at 250 mg/m3 for 65 minutes average and 55 minutes minimum when tested.

3.4 Identification and Marking. Each adsorber cell shall be permanently and legibly marked with the below information. The outer fiberboard container shall be permanently and legibly marked with the information as identified below. The outer fiberboard container shall include (UP) directional markings, 1 per each side of container, 4 total. Markings to be located on center (vertical and horizontal).

(a) Manufacturer’s name

(b) Serial number

(c) Date of manufacture

(d) Weight (pounds, to the tenths of a pound)

(e) Contract number

(f) Carbon type and grade designation, carbon media lot, and carbon media batch

(g) Rated airflow rate in ACFM, Freon leakage test (% penetration), and measured airflow resistance (IWG) with associated temperature at specified airflow rating

3.5 Workmanship. Each adsorber cell shall be free from foreign matter, such as dirt, grease, oil, and from minor damage that is non-mission essential, such as chipped, burred or bent sections, or loose, frayed, or torn gasket material.

Potting shall appear evident and applied correctly to eliminate immediate mechanical leakage paths as a result of incorrect adsorber assembly (validated in acceptance testing). Filter media per Paragraph 3.2.2 shall be free of punctures, tears, voids, abrasions, (both major/minor damage) as associated with the adsorber assembly process (including pleating process, assembly, and manual handling at the factory level).

Pleat spacing and separator/finger spacing/alignment, for applicable adsorber configurations produced, shall be IAW the Pleated Carbon Adsorber Design Drawing(s), as approved by the Government.

3.6 Adsorber Dimensions, Exterior. All exterior dimensions (L, W, and H) referenced in Paragraphs 3.1, and approved design drawings to the Government for each configuration of pleated carbon adsorber cells, shall meet a tolerance of ± 1/8 inch. Exterior dimensions are exclusive of any specified upstream or downstream gasket.

02. PACKAGING.

For acquisition purposes, the packaging requirements shall be as specified herein. The following packaging instructions shall be implemented for production quantities of Cell, Gas Phase, Pleated Carbon Adsorbers, for all cited configurations above. All deliverables shall be packaged IAW the approved packaging instructions until revised packaging instructions have been submitted by the contractor and approved by the Government. Incorporation of the revised packaging instructions shall be determined by the proper authority of the contracting activity at a predetermined point in the contract schedule.

4.1 Adsorber Cell Identification and Markings. Referencing Paragraph 3.4, confirm each pleated carbon adsorber cell has the required permanent and legible identification and markings.

4.2 Upstream Fiberboard. Place cut sheet of engineered fiberboard over upstream (U/S) adsorber cell face with fiberboard strands oriented in the vertical orientation (adsorber pleats vertical) and secure to pleated carbon adsorber cell with tape fasteners, spaced equidistant, (2) places top and (2) places bottom ((4) places total). Fiberboard sheet to run full width and full height of pleated carbon adsorber cell face. Entire surface area of U/S adsorber gasket, if applicable, shall be covered and protected by the engineered fiberboard sheet. Do not secure fiberboard to adsorber gasket such that gasket is under compression.

Engineered Fiberboard Dimensions (configuration dependent):

• 23 3/8 inch W x 23 3/8 inch H (Box and Header Style)

• 19 3/8 inch W x 23 3/8 inch H (Box Style)

• 11 3/8 inch W x 23 3/8 inch H (Box Style)

4.3 Downstream Fiberboard. Repeat procedure for downstream (D/S) adsorber cell face; same as above. Fiberboard sheet to run full width and full height of pleated carbon adsorber cell face.

Entire surface area of D/S adsorber gasket, if applicable, shall be covered and protected by the engineered fiberboard sheet. Do not secure fiberboard to adsorber gasket such that gasket is under compression.

Engineered Fiberboard Dimensions (configuration dependent):

• 23 3/8 inch W x 23 3/8 inch H (box style and header style)

• 19 3/8 inch W x 23 3/8 inch H (box style)

• 11 3/8 inch W x 23 3/8 inch H (box style)

4.4 Barrier Bag. Place pleated carbon adsorber cell, with secured fiberboard sheets over U/S and D/S adsorber cell faces into the barrier bag. Barrier bag shall be fabricated of a suitable material to protect the deliverable from moisture NTE 1-year. Barrier bag dimensions shall be of sufficient width, height, and depth to allow sealing the bag around the pleated carbon adsorber cell in its service orientation. Prior to sealing, excess air shall be removed from the barrier bag. Sealed package shall not cause deformation to the pleated carbon adsorber cell assembly (packaging, frame, media/pleats, and gasket).

4.5 Side End Caps. Place (2) side caps onto pleated carbon adsorber cell (sealed inside barrier bag), with adsorber pleats in vertical orientation. Side end caps shall be constructed from engineered fiberboard. Fiberboard to form around perimeter of adsorber cell such that U/S or D/S gasket (as applicable) is not compressed. Secure side end caps to barrier bag with (2) tape fasteners front and (2) tape fasteners back; spaced equidistant. Flanges of side fiberboard end caps to be 2 inches H, minimum. Note: Side end caps for header style pleated carbon adsorber cell shall require full fiberboard blocking to allow adsorber cell to seat plumb prior to fastening side end caps to the barrier bag. Fiberboard blocking negates damage.

4.6 Fiberboard Container. Place pleated carbon adsorber cell assembly (in barrier bag with side end caps attached – Paragraph 5.5) into outer engineered fiberboard container. Pleated carbon adsorber cell assembly shall not move freely in any direction within outer container. Container to be secured, top and bottom, with tape closures, 1 each, such that bottom and top tape closures extend to each respective side of the outer fiberboard container.

4.7 Fiberboard Container Identification and Markings. Referencing Paragraph 3.4, confirm each outer fiberboard container has the required permanent and legible identification and markings.

Outer fiberboard container shall have markings, 1 per side ((4) total), indicating (UP) direction.

Markings to be located on center (vertical and horizontal). For box style adsorbers, mark the side of the container that has the gasket attached with “Gasketed Side”. For header style adsorbers, mark the side of the container that has the header with “Header Side”

4.8. Palletizing. Final assembled packaging containers can be stacked on standard pallet, 12 containers per pallet (2 layers, 6 containers per layer). Apply shrink-wrap and banding as required to secure palletized containers.

5. NOTES.

5.1 Intended Use. The gas phase adsorber cell is used to remove low-volatile toxic chemical vapors that enter the air filtration systems used for collective protection applications.

5.2 Moisture and Contaminant Control.

The manufacturer may implement various process controls to minimize the damaging impact of moisture to the carbon media. Ensuring any air streams entering the adsorber cell, especially during refrigerant leakage testing, is not laden with excessive moisture or contaminant is strongly recommended.

5.3 Delivery Address:

US Army ECBC Bldg E4301 Bay 76 8500 Otto Rd Aberdeen Proving Ground, MD 21010-5424

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