1、Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: STDZNMGTdla.mil or Defense Supply Center Richmond (DSCR), ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616. Since contact information c
2、an change, you may want to verify the currency of this address information using the ASSIST database at https:/assist.daps.dla.mil/. FSC 8120 INCH-POUND A-A-59666B 7 June 2010 SUPERSEDING A-A-59666A 24 February 2005 COMMERCIAL ITEM DESCRIPTION CYLINDER, COMPRESSED GAS: DOT SPECIFICATIONS 4B, 4BA, 4B
3、W, AND 4E The General Services Administration has authorized the use of this commercial item description for all federal agencies. 1. SCOPE. This commercial item description (CID) provides the acquisition requirements for the purchase of empty compressed gas cylinders to be used for storage, transpo
4、rtation, and distribution of low pressure liquefied compressed gases including refrigerants, liquefied petroleum gases, and fire extinguishing agents. 2. CLASSIFICATION. The cylinders shall be classified by the types, classes, sizes, service pressures, and valve specifications listed below: Type I -
5、 steel cylinder II - aluminum cylinder Class - intended gas service (see table I) Size - for refrigerant and fire fighting agent cylinders (see table II) - for liquefied petroleum gas cylinders (see table III) Service pressure (see table IV) Valve specification (see table V) Provided by IHSNot for R
6、esaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59666B 2 3. SALIENT CHARACTERISTICS 3.1 Material, design, and construction. The cylinders shall be manufactured, inspected, and tested in accordance with Department of Transportation (DOT) specifications 4B, 4BA, 4BW for t
7、ype I (steel) cylinders or 4E for type II (aluminum) cylinders as specified in the acquisition order (see 7.3(b) in accordance with 49 CFR 178, Subpart C, “Specifications for Cylinders“. The applicable DOT specification shall be specified in the acquisition order (see 7.3(c). The cylinders supplied
8、shall be newly fabricated within one year of the manufacture date, completely clean, dry, and empty. 3.2 Intended gas service. The intended gas service shall be designated by the class codes found in table I (see 7.3(d). Cylinder and valve compatibility with the intended gas product shall comply wit
9、h the requirements of this document and 49 CFR 173.304, “Filling of Cylinders with Liquefied Compressed Gases“. TABLE I. Intended gas service. Class code Item name code1Gas product A1 03396 Generic applications B1 49455 Bromochlorodifluoromethane, Technical C1 49456 Butane D1 49457 Butane-Propane Mi
10、xtures E1 49467 Dibromodifluoromethane, Technical F1 49468 Dichlorodifluoromethane, Technical G1 49469 Dichlorodifluoromethane and Difluoroethane, Azeotropic Mixture H1 49470 Dichlorotetrafluoroethane, Technical J1 49472 Ethyl Chloride, Technical K1 49474 Ethylene Oxide, Technical L1 49475 Ethylene,
11、 Technical M1 49488 Hydrogen Chloride, Anhydrous N1 49489 Hydrogen Sulfide, Technical P1 49507 Propane R1 49508 Sulfur Dioxide, Technical S1 49510 Trichloromonofluoromethane, Technical T1 49511 Trichlorotrifluoroethane, Technical U1 49513 Monochlorotrifluoromethane, Technical V1 49514 Monochlorodifl
12、uoromethane W1 49515 Monobromotrifluoromethane X1 49518 Monochlorodifluoromethane and Monochloropentafluoroethane, Azeotropic Mixture A2 N/A Difluoromethane B2 N/A Dichlorotrifluoroethane Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59666B 3 T
13、ABLE I. Intended gas service - Continued. Class code Item name code1Gas product C2 51167 Dichlorotrifluoromethane (74%); Difluoroethane (26%) D2 51167 Difluoromethane (50%); Pentafluoroethane (50%) E2 51167 Difluoromethane (45%); Pentafluoroethane (55%) F2 51167 Difluoromethane (20%); Pentafluoroeth
14、ane (40%); Tetrafluoroethane (40%) G2 51167 Difluoromethane (10%); Pentafluoroethane (70%); Tetrafluoroethane (20%) H2 51167 Difluoromethane (23%); Pentafluoroethane (25%); Tetrafluoroethane (52%) J2 51167 Monochlorodifluoromethane (49%); Monochloropentafluoroethane (51%) K2 51167 Monochlorodifluoro
15、methane (53%); Difluoroethane (13%); Monochlorotetrafluoroethane (34%) L2 51167 Monochlorodifluoromethane (61%); Difluoroethane (11%); Monochlorotetrafluoroethane (28%) M2 51167 Monochlorodifluoromethane (45%); Difluoroethane (7%); Monochlorodifluoroethane (5.5%); Octafluorocyclobutane (42.5%)N2 511
16、67 Monochlorodifluoromethane (60%); Monochlorotetrafluoroethane (25%); Monochlorodifluoroethane (15%) P2 51167 Monochlorodifluoromethane (55%); Isobutane (4%); Monochlorodifluoroethane (41%) R2 51167 Monochlorodifluoromethane (44%); Octafluoropropane (56%) S2 51167 Monochlorodifluoromethane (70%); O
17、ctafluoropropane (5%); Monochlorotetrafluoroethane (25%) T2 53035 Monochlorotetrafluoroethane U2 N/A Pentafluoroethane V2 51167 Pentafluoroethane (60%); Propane (2%); Monochlorodifluoromethane (38%) W2 51167 Pentafluoroethane (38%); Propane (2%); Monochlorodifluoromethane (60%) X2 51167 Pentafluoroe
18、thane (50%); Trifluoroethane (50%) Y2 51167 Pentafluoroethane (44%); Trifluoroethane (52%); Tetrafluoroethane (4%) Z2 51167 Pentafluoroethane (7%); Trifluoroethane (46%); Monochlorodifluoromethane (47%) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
19、-A-A-59666B 4 TABLE I. Intended gas service - Continued. Class code Item name code1Gas product A3 51167 Propylene (1.5%); Monochlorodifluoromethane (87.5%); Difuoroethane (11%) B3 51167 Propylene (3%); Monochlorodifluoromethane (94%); Difuoroethane (3%) C3 50311 Tetrafluoroethane D3 N/A Trifluoroeth
20、ane E3 N/A Trifluoromethane F3 51167 Trifluoromethane (39%); Hexafluoroethane (61%) G3 51167 Trifluoromethane (40%); Monochlorotrifluoromethane (60%) H3 N/A Heptafluoropropane 1The item name codes are listed in the Federal Item Identification Guide (FIIG) T162. 3.3 Preconditioning and internal prese
21、rvation. After hydrostatic and any other testing, cylinder internal surfaces shall be cleaned and dried to be free of moisture, oil, grease, grit, machining products, loose scale, slag, or other foreign materials. Rust bloom or particulate matter (approximately 1.0 to 1.5 grams) generated subsequent
22、 to inspection as a result of handling and shipping is acceptable. Cylinders tested hydrostatically and/or internally flushed for cleaning or cylinders that were tested or flushed with moisture laden air shall be immediately dried with hot filtered air or nitrogen to insure the effluent air or gas h
23、as a dew point of less than 30 F (-1.1 C). Immediately after internal drying, the cylinder shall be closed with the designated valve or plug. If the cylinder is closed with a valve, it shall be pressurized to approximately 5 pounds per square inch gage (psig) with dry oil-free nitrogen type I, grade
24、 A or B, class I, in accordance with A-A-59503, “Nitrogen, Technical“, or type I, grade L or better, in accordance with Compressed Gas Association (CGA) G-10.1, “Commodity Specification for Nitrogen“. The cylinder shall then be tagged at the valve “PRESERVED WITH NITROGEN GAS“. 3.4 Water capacity. T
25、he cylinder water capacity shall comply with the applicable DOT 4B, 4BA, 4BW, or 4E requirements for the intended gas service and with any additional requirements specified in the acquisition order (see 7.3(e). 3.5 Size. The cylinder size shall be one of the coded options listed in tables II and III
26、 (see 7.3(f). The outside diameter and the height to the base of the valve shall be as specified in tables II and III for the size cylinder selected. The dimensional tolerances shall be 0.25 inch in diameter and 1.00 inch in height. Where tighter tolerances are required, they shall be cited in the p
27、rocurement document and shall take precedence over the tolerances cited here. 3.6 Tare weight. The cylinders maximum tare weight shall be as specified in tables II and III (see 7.3(g), and shall be inclusive of the valve and cylinder but without the valve protection cap. The tare weight shall be sta
28、mped into the head of the cylinder in a position other than in sequence with another DOT permanent marking. The marking shall be displayed as required by CGA TB-15, “Requirements for the Post Manufacture Tare Weight Marking of Cylinders “. The marking shall Provided by IHSNot for ResaleNo reproducti
29、on or networking permitted without license from IHS-,-,-A-A-59666B 5 represent the tare weight of the cylinder and valve with an accuracy of one percent and shall be displayed in pounds (LB) and ounces (OZ) unless otherwise specified. TABLE II. Cylinder sizes: refrigerants and fire fighting agents.
30、Size code Diameter (inches) Height1(inches) Tare weight (lbs.) Water capacity (lbs.) Volume (cubic inches) A 6.75 11.016 8.5 236 B 6.75 21.020 21.5 596 C 8.18 27.030 42.0 1,165 D 12.18 36.060 122.0 3,384 E 10.18 49.060 122.0 3,384 F 30.0 50.0575 1,000.0 27,737 1 Height to base of valve. 2 Unless oth
31、erwise specified, the cylinder inlet threads shall be 3/4 - 14 NGT. TABLE III. Cylinder sizes: liquefied petroleum gas. Size code Capacity (lbs.) Diameter (inches) Height1(inches) Tare weight (lbs.) Water capacity (lbs.) Volume (cubic inches) Steel G 20.0 12.25 13.7518.5 47.6 1,320 H 30.0 12.25 20.0
32、025.5 71.4 1,980 I 40.0 12.25 25.1230.0 95.2 2,640 J 60.0 12.16 37.3745.0 143.0 3,966 K 100.0 14.75 42.5077.0 240.0 6,657 L 200.0 24.00 34.06142.0 476.0 13,203 M 300.0 30.00 34.00216.0 714.0 19,804 N 420.0 30.00 45.62270.0 1,000.0 27,737 O 25.5 9.00 29.0027.0 60.7 1,684 Aluminum P 60.0 12.19 37.3858
33、.0 143.0 3,966 Q 100.0 14.50 43.6972.0 238.0 6,601 R 20.0 12.25 14.7513.0 47.6 1,320 S 30.0 12.50 21.0016.5 71.5 1,983 T 33.0 12.25 22.3716.0 80.0 2,219 U 40.0 12.50 26.5319.5 95.3 2,644 1 Height to base of valve. 2 Unless otherwise specified, the cylinder inlet threads shall be 3/4 - 14 NGT. Provid
34、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59666B 6 3.7 Service pressure. The cylinder service (operating) pressure shall be one of the coded options listed in table IV (see 7.3(h). The rated service pressure for cylinders in liquefied compressed
35、gas applications shall not be less than the pressures cited in 49 CFR 173.301, “General Requirements for Shipment of Compressed Gases and other Hazardous Materials in Cylinders, UN Pressure Receptacles and Spherical Pressure Vessels“, and 49 CFR 173.304. TABLE IV. Service pressure. Code Service pres
36、sure (psig) A 240 B 260 C 3001D 40011 Refrigerants and fire fighting agents only. 3.8 Cylinder ownership markings. The U.S. Government ownership symbol, “US GOVT“, as originally registered with the Bureau of Explosives and now the DOT, shall be stamped into the shoulder of the cylinder in letters 3/
37、8 inch high. Cylinders less than 4 inches in diameter shall be stamped in 1/4-inch letters. The symbol shall be stamped directly below or offset 90 degrees from the DOT permanent markings. 3.9 Treatment and painting. The treatment and painting of cylinders shall be by any method or system that will
38、provide a finish that meets the requirements of CGA TB-17, “Test Methods for Evaluating Paints and Coatings on Refillable Steel Compressed Gas Cylinders“. The cylinders shall be color coded and stenciled in accordance with the requirements of MIL-STD-101, “Color Code for Pipelines and for Compressed
39、 Gas Cylinders“, for the designated gas for which the cylinder is designed. 3.9.1 Bottom coating. Calcium sulfonate coating, such as Watson Armor Shield or an equivalent, shall be applied to each dry, clean steel cylinder bottom and footring, when applicable, as soon as practicable after cleaning pr
40、ocesses are completed. Dry film thickness of the bottom coating shall be 3.0 to 7.0 one-thousandth of an inch (mil). 3.10 Components. The cylinder shall be fitted with a neck flange with a mated valve protection cap. The cylinder shall also be supplied with the designated valve or plug as specified.
41、 3.10.1 Neck flange. Each cylinder neck flange shall be a welded part of the cylinder head and shall be free of visible defects (cracks, pits, scales, etc.) or foreign materials (sand, flux, etc.). The flange threads shall be free of any damage. 3.10.2 Valve protection cap. The cylinder neck flange
42、shall mate with a valve protection cap of the size and thread as designated for the neck flange. The cap shall turn smoothly and freely on its threads to full thread engagement. The cap shall be free of any cracks or dents and shall be painted the same color and with the same quality as the shoulder
43、 of the cylinder. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59666B 7 3.10.3 Closure. If required, the cylinder shall be furnished with a designated valve according to A-A-59860, “Valves, Cylinder, Gas (for Compressed or Liquefied Gases)“. T
44、he valve shall be one of the coded options listed in table V (see 7.3(i). The valve shall meet all of the requirements of A-A-59860 as referenced by the valve part or identification number (PIN). When a valve is not designated, the cylinder shall be closed with a brass plug (hex wrenching flats) and
45、 Teflonor equivalent polytetraflouroethylene (PTFE) tape to afford proper sealing and easy removal. TABLE V. Valve specification. Valve code Former detail specification number1A-A-59860 valve PIN Valve code Former detail specification number1A-A-59860 valve PIN 094 MIL-DTL-2/47 AA59860-094 001 002 M
46、IL-DTL-2/1 AA59860-001 AA59860-002 095 096 MIL-DTL-2/48 AA59860-095 AA59860-096 003 004 MIL-DTL-2/2 AA59860-003 AA59860-004 097 MIL-DTL-2/50 AA59860-097 098 MIL-DTL-2/51 AA59860-098 005 006 MIL-DTL-2/3 AA59860-005 AA59860-006 007 008 009 010 011 MIL-DTL-2/5 AA59860-007 AA59860-008 AA59860-009 AA5986
47、0-010 AA59860-011 099 100 101 102 103 104 105 106 107 108 MIL-DTL-2/52 AA59860-099 AA59860-100 AA59860-101 AA59860-102 AA59860-103 AA59860-104 AA59860-105 AA59860-106 AA59860-107 AA59860-108 012 013 014 015 016 MIL-DTL-2/6 AA59860-012 AA59860-013 AA59860-014 AA59860-015 AA59860-016 017 MIL-DTL-2/7 A
48、A59860-017 018 MIL-DTL-2/8 AA59860-018 109 110 111 112 MIL-DTL-2/53 AA59860-109 AA59860-110 AA59860-111 AA59860-112 019 MIL-DTL-2/9 AA59860-019 020 MIL-DTL-2/10 AA59860-020 113 114 MIL-DTL-2/54 AA59860-113 AA59860-114 021 022 023 024 025 MIL-DTL-2/11 AA59860-021 AA59860-022 AA59860-023 AA59860-024 A
49、A59860-025 115 116 117 118 119 MIL-DTL-2/55 AA59860-115 AA59860-116 AA59860-117 AA59860-118 AA59860-119 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59666B 8 TABLE V. Valve specification - Continued. Valve code Former detail specification number1A-A-59860 valve PIN Valve code Former detail specification number1A-A-59860
