A02_HEGAIDIQSOW.pdf

High Efficiency Gas Adsorber (HEGA)

C.1.0 Scope. The objective of this contract is to obtain HEGA (High Efficiency Gas Adsorber) Adsorbers for use in Chemical Agent Adsorber Systems (CAFS). The adsorber systems are considered to be the last line of defense in protecting personnel from potential exposure to chemical agents.

These specifications cover the design and testing of a modular gas-phase adsorber cell for use in once-through air cleaning systems where high efficiency removal of gaseous containments is a requirement. Adsorber cell frames have been listed below as well as a newer cell designed to meet the growing needs of our customers.

C.2.0 Applicable Documents:

C.2.1. IEST –RP-CC008.2, [High-efficiency Gas-phase Adsorber Cells], 1 FEB 2011, https://www.iest.org/Standards-RPs/Recommended-Practices/IEST-RP-CC008

C.2.2. MIL-PRF-32016A(EA), [Performance Specification Cell, Gas Phase, Adsorber], Current version, http://everyspec.com/MIL-PRF/MIL-PRF-030000-79999/MIL-PRF-32016A_10601/

C.2.3. MIL-DTL-32101A, [Carbon, Activated, Impregnated, Copper-Silver-Zinc-Molybdenum-Triethylenediamine (ASZM-TEDA)], Current version, http://everyspec.com/MIL-SPECS/MIL-SPECS-MIL-DTL/MIL-DTL- 32101_43861/

C.3.0. Requirements: The contractor shall follow the Industry Standard (IEST-RP-CC008.2, dated 01 Feb 2011) with the following modifications to that standard brought out in Annex A. The exceptions listed in Annex A are directly related to the numbering scheme from the original document, IEST-RP-CC008.2. Adsorber testing standard (MIL-PRF-32016A(EA)) exceptions are included in Annex B.

C.3.1. The Contractor shall provide timely delivery of Government requested material to the address provided below unless otherwise specified by the Government. The government is procuring HEGA adsorbers, as outlined in the table below:

Part Number Part Description

HEGA-SIC-16 Stainless steel adsorber SIC 24”W x 24”H x 16”D HEGA-SIC-18 Stainless steel adsorber SIC 24”W x 24”H x 18”D HEGA-SIC-24 Stainless steel adsorber SIC 12”W x 24”H x 24”D

HEGA-TEDA-16 Stainless steel adsorber TEDA 24”W x 24”H x 16”D HEGA-TEDA-18 Stainless steel adsorber TEDA 24”W x 24”H x 18”D HEGA-TEDA-24 Stainless steel adsorber TEDA 12”W x 24”H x 24”D

HEGA-AC-16 Stainless steel adsorber AC 24”W x 24”H x 16”D HEGA-AC-18 Stainless steel adsorber AC 24”W x 24”H x 18”D HEGA-AC-24 Stainless steel adsorber AC 12”W x 24”H x 24”D

C.3.2. Carbon Acceptance Testing. All carbon adsorbent used in the production of the TEDA adsorbers must be tested by a certified Government lab to meet the requirements within MIL-DTL-32101A. The total test cost is the responsibility of the contractor. Carbon acceptance test results shall be provided by the carbon manufacturer to the adsorber manufacturer and the Government. Every unique quantity of carbon used in adsorber production must be tested in this manner. All Sulfur Impregnated (SIC) and Activated Carbon (AC) adsorbent will only require manufacture certification.

C.3.3. HEGA Adsorber Lot Acceptance Testing. Production lot acceptance testing will be used to ensure that the produced adsorbers conform to contract specifications. TREB is the only facility authorized to perform the lot acceptance testing. The contractor must have a Technology Support Agreement (TSA) set up with TREB so that testing by the government agency can take place. Ten percent of the production lot shall be delivered to TREB for testing in accordance with dates in the individual delivery order. A production lot may vary from the total number of adsorbers ordered to allow for the use of multiple lots of carbon or to reduce the risk of adsorber failure. For example, if the government orders 100 adsorbers it would be acceptable for the contractor to manufacture lots as small as 10 adsorbers. Once the Contractor has produced the lot of HEGA Adsorber, they shall be certified by the Contractor as having met the Government specifications and be given unique serial numbers. The COR will select serial numbers at random for testing. TREB will conduct the testing in accordance with MIL-PRF-32016A. The tested filters are available for pickup after testing, however, they will be contaminated with DMMP and must be handled properly. If the filter manufacture so wishes, the government will dispose of the tested filters at no expense to the manufacture. If no such guidance is given to the Government for the filters after testing they will be assumed after two weeks from the date of testing the government will automatically destroy the tested filters. The contractor is responsible for the cost of the lot acceptance testing. Once complete, the contractor will provide the COR with the results of the lot acceptance testing. 100% of the acceptance adsorbers must pass the test in order to be determined acceptable.

C.3.4. Adsorber Requirements:

C.3.4.1. Adsorber Selections. The adsorbers shall meet the following standards

Dimensions Flow Rate Resistance Time 24”W x 24”H x 16”D 416 CFM 0.3s 24”W x 24”H x 18”D 520 CFM 0.3s 12”W x 24”H x 24”D 460 CFM 0.25s

C.3.4.2 Carbon Selections: The type of Carbon required will be noted at the time of purchase.

1. The Sulfur Impregnated (SIC) adsorbers shall be activated carbon impregnated with 10% minimum sulfur.

2. The Triethylenediamine (TEDA) adsorbers shall be activated carbon with impregnated Copper-Silver-Zinc- Molybdenum-Triethylenediamine (ASZM-TEDA), as described in MIL-DTL-32101A.

3. The Activated Carbon (AC) the activated carbon shall be coconut shell base, 12 × 30 mesh and shall have a minimum carbon tetrachloride activity of 60% when tested in accordance with ASTM D3467.19 The carbon shall meet the “base” carbon requirements for nuclear grade carbon.

C.3.5. Shipping. The cost of shipping the Adsorber shall be the responsibility of the contractor. The Adsorber will be individually wrapped to protect them from the elements and shall be UV stable so as not to break down under prolonged periods of sun exposure. Each adsorber shall be vacuum sealed, so as to protect the Carbon for storage with a min of 6mil plastic. Each adsorber shall be marked as to what it is and be visible without opening as well as being marked on the adsorber shell on all sides: i.e. Part number, contract number, order number, LOT group number, serial number.

C.3.6 Security Considerations. Contractor and all associated subcontractors employees shall provide all information required for background checks to meet installation access requirements to be accomplished by installation Provost Marshal Office, Director of Emergency Services or Security Office. Contractor workforce must comply with all personal identity verification requirements (FAR clause 52.204-9, Personal Identity Verification of Contractor Personnel) as directed by DoD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in contractor security matters or processes. Contractor and all associated subcontractor employees shall comply with adjudication standards and processes using the National Crime Information Center Interstate Identification Index (NCICIll) and Terrorist Screening Database (TSDB) (Army Directive 2014-05/AR 190-13), applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative), or, at OCONUS locations, in accordance with status of forces agreements and other theater regulations.

C.3.7 Period of Performance. The total contract ordering period is five (5) year from the effective date of award. The total ordering period is broken into five (5) individual 12-month ordering periods.

ANNEX A

EXCEPTIONS to IEST-RP-CC008.2 for High-efficiency Gas Phase Adsorber Cells

1 SCOPE. Make the following changes:

1.2 Adsorbent Specifications. In addition to 1.2 add A1.2.1:

A.1.2.1 Adsorbent Specifications.

The adsorbent material used in these cells shall be in full compliance with purchase description MIL-DTL- 32101A, Carbon, Activated, Impregnated, Copper-Silver-Zinc-Molybdenum-Triethylenediamine (ASZM-

TEDA).

2 REFERENCES AND APPLICABLE DOCUMENTS. Add the following:

A.2.7.1 MIL-DTL-32101A: Carbon, Activated, Impregnated, Copper-Silver-Zinc- Molybdenum-Triethylenediamine (ASZM-TEDA).

A.2.7.2 ASME AG-1-1994: Code on Nuclear and Gas Treatment.

A.2.7.3 MIL-STD-282: Adsorber Units, Protective Clothing, Gas-Mask Components and Related Products: Performance-Test Methods

A.2.7.4 MIL-PRF-32016A(EA): Performance Specification, Cell, Gas Phase, Adsorber

A.2.8 MIL-DTL-32101A & MIL-STD-282:

Technical Director, US Army Edgewood Research, Development and Engineering Center, ATTN: SCBRD-ENE-D, APG MD 21010-5423"

4 Allowable Materials. Make the following changes:

4.1 Adsorbent. In addition to this paragraph add:

-“The adsorbent material shall be in compliance with purchase description MIL-DTL- 32101A. “

4.2.2 Plywood. Delete

4.2.3 Wood particle board: Delete

4.2.4 Standard wood particle board: Delete

4.2.5 Plastic Material: Delete

4.4 Gaskets and Seal Pads. Make the following additions.

4.4.2 a) Gasket Seal: Delete and replace with the following.

A4.4.2 a) Gasket Seal:

Face gasket materials shall be impermeable to conventional blood, blister, choking and nerve agents warfare agents. The gasket material shall be of minimum properties of EPT/Polyethylene/Butyl rubber, per ASTM D1056-00 grade 2C2, 2C3 or 2C4.

Closed cell, oil resistant with medium swell, having compression deflection range of 5 to 9 PSI.

4.4.2 b) Fluid Seal: Delete

5. Design: Make the following changes.

5.2 Adsorber to Frame seal:

5.2.2 Fluid Seals: Delete

6 CONSTRUCTION. Make the changes:

6.1 Type 1 (serpentine-bed) Cell: Delete

6.1.1 General: Delete

6.1.2 Adsorbent bed: Delete

6.1.3 Case: Delete

6.1.4 Typical dimensions and tolerances of assembled and filled cell: Delete

6.1.5 Cell assembly: Delete

6.2 Type II (flat-bed) cell: Delete

6.2.1 General design: Delete

6.2.2 Adsorbent bed: Delete

6.2.3 Case and assembly: Delete

6.3 Type III (not discussed in detail): Delete

6.4.2 Adsorbent beds: Add the following

- The cell shall consist a minimum of 6 separate carbon beds configured as “V”s. The design shall be such that the adsorbent from any of the beds cannot pass (such as from settling) into another of the beds. Screens shall have minimum 3/4 inch wide margins around the perimeter of each bed.

- The High Flow cell shall consist a minimum of 8 separate carbon beds configured as “V”s. The design shall be such that the adsorbent from any of the beds cannot pass (such as from settling) into another of the beds. Screens shall have minimum 3/4 inch wide margins around the perimeter of each bed.

6.4.3 Case and assembly: Add the following

- Panels should have single-turned flanges on both long sides and either single- or double-turned flanges on the short sides. Fasteners should be spaced no more than 2.75

in. (77 mm) apart. Case panels should be assembled so that the tolerances of Paragraph

6.4.4 are maintained on the gasketed face of the cell. Side panels should have heavy stainless steel stiffeners so that, when assembled to the cell, the side panels will be flat within the tolerance specified in Paragraph 6.4.4.

- Adsorber Cases shall be designed to allow ease of installing into the Adsorber housing that the cell shall having lifting points installed of sufficient strength to allow material handling equipment to pick the cell up and load it into a adsorber housing. These lifting points when picked up shall not distort the cell in any shape or form and not inhibit the total air flow through the cell. The lifting point shall not protrude past the final dimension given in section 6.4.4. These lifting points shall be on each side of the cell to allow installation of the cell on either a left hand or right hand orientation.

6.4.4 Typical dimensions and Tolerances of Assembled and Filled Cell.

Make the following changes:

Standard Cell:

- Face dimensions

A=24 in

B=24 in

- Depth (less gasket)

C=16 in or 18 in as needed and specified in the order

- Bed depth

D= 2 in. Minimum

High flow cell:

- Face dimensions

A=24 in

B=12 in

- Depth (less gasket)

C=24

- Bed depth

D= 2 in. Minimum

A.6.6 Filling. Delete this paragraph and replace with the following:

“ 6.6 Filling

Cells shall be filled with adsorbent meeting the requirements of MIL-DTL- 32101A. After filling, adsorbent fines shall be removed from the beds by blowing with clean, dry, oil-free compressed air or by vacuuming.”

A.6.7 Marking. Make the following change:

a. FROM: “ Number of this practice: IEST-RP-CC008.2”

TO: “ Number of this practice: IEST-RP-CC008.2 as modified by the Purchaser.”

7 QUALITY ASSURANCE REQUIREMENTS.

Add the following in addition to the IEST in the specified areas.

7.4 Documentation:

The carbon adsorber cell manufacturer shall provide the purchaser with the following documentation upon shipment:

table and/or schematic identifying outline or significant interface dimensions;

certified list of materials;

adsorbent type and its certified test reports;

welder qualification;

certified test reports for all performance requirements specified in paragraph 4.

certification of compliance with packaging and shipping requirements specified in paragraph 8.

7.5 Additional Quality Assurance See Annex B:

9 NOTES.

Add the following new paragraph:

“ 9. Notes:

9.1 The residence time shall be determined by the procedure in Mandatory Appendix FE-I, ASME AG-1-1994.

9.2 Typically, the manufacturer will nominally rate an equivalent adsorber cell at an airflow of (cell rated) scfm (+/- 5%); a minimum residence time of 0.300 seconds; and a pressure drop of 3.5 iwg (+/-10 %), unless otherwise stated.

9.3 Reference to metric dimensions is for information only.

9.4 Attach the following documentation with the samples to be tested:

Request for moisture content and CK-gas life tests in accordance with this document.

Adsorber serial number sample was taken from.

Manufacturer Name, Address and Point of Contact.

Applicable contract number.”

Annex B

Quality assurance will also include the specification sheet MIL-PRF-32016A(EA). The following are changes to that specification to suit the needs of this specification sheet.

Exceptions to MIL-PRF-32016A(EA)

Performance Specification Cell, Gas, Adsorber

3.3.1 Pressure Drop: Make the following changes

The pressure drop of the adsorber shall be no greater than 3.5 inches of water gage(iwg) with a maximum variance of 10% from the arithmetic mean of the production lot when the airflow rate is at the cell rated Standard cubic feet per minute (SCFM)

3.4.1 Outer Dimensions: Make the following changes.

Standard Cell:

The outer dimensions of the face area (surface area normal to air flow) shall be 24 +0, -1/8 by 24 +0, -1/8 inches. The depth of the adsorber cell shall be (16 or 18) +0,- 1/8 inches. See Figure 1. Dimensions are exclusive of the gasket.

High Flow Cell:

The outer dimensions of the face area (surface area normal to air flow) shall be 24 +0, -1/8 by 12 +0, -1/8 inches. The depth of the adsorber cell shall be 24 +0,-1/8 inches. See Figure 1. Dimensions are exclusive of the gasket.

Figure 1. Gas-phase adsorber cell. Interface-related dimensions: Delete and replace with the following.

4.5.3.3 DMMP gas life capacity: Make the following change

(b) Install cell in test tunnel in its service orientation. Adjust cell to rated scfm +/- 5%. The cell shall be tested using dimethylmethylphosphonate (DMMP) and run to cell life at the following test condition:

Challenge concentration of DMMP: 5,000 +/- 400 mg/m3

Breakthrough concentration of DMMP: 0.04 mg/m3

Relative humidity: less or equal to 40%

Temperature: 45± 5°C

(c) The test tunnel shall be operated at the rated flow. The inlet face of the cell shall be chal-lenged as specified above. The total time from the start of the cell challenge until the breakthrough concentration is reached (i.e., the life of the cell) shall be recorded as the breakthrough time.

(d) The DMMP vapor in air challenge concentration shall be created to ensure uniform mixing of the DMMP vapor with the air once it reaches the test cell. Qualification testing to verify the DMMP vapor concentration is uniform across the cell face shall be on file and available for inspection.

(e) The breakthrough time for the DMMP concentration of the adsorber cell effluent to in-crease to 0.04 mg/m shall be 60 minutes or greater to accept the adsorber cell sample.

While the challenge concentration is permitted to vary within the stated range during the course of the test, the breakthrough time measured must be normalized to the 5,000 mg/m3 concentration by the following calculation:

Corrected breakthrough time = Measured breakthrough time * Average concentration during test * 5,000 mg/m3

4.5.4.1 Moisture content. Replace with this paragraph

The moisture content of each of the 2 carbon samples shall be determined in accordance with ASTM D 2867, except the oven drying temperature shall be103°---107°C.

(a) For any sample failing to meet the requirements of 3.3.4.1:

(1) All cells represented by the failed sample, in turn, fail to meet the requirements of

3.3.4.1. These cells shall be removed from the lot. (See 6.3 (b).)

(b) For any sample successfully meeting the requirements of 3.3.4.1:

(1) For each adsorber cell represented by the sample, calculate and record the adsorber cell dry weight. The cell dry weight is calculated by reducing the cell’s total weight (determined at the time of final assembly which is not necessarily the time of packaging) by the moisture content measured in the quarter lot carbon sample for that cell.

(2) Immediately before packaging (which may not immediately follow when the cell was assembled and weighed), weigh each cell. If this weight is higher than the weight taken at the time of final assembly, the weight increase shall be attributed to an additional moisture gain. In turn, the cell’s moisture content shall be increased by this gain. Any cell failing to meet the requirements of 3.3.4.1 shall be removed from the lot (see 6.3(b).)