1、Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616, or e-mailed to STDZNMGTdla.mil. Since contact information can change, you may want to verify the currency of this address
2、 information using the ASSIST database at https:/assist.daps.dla.mil/. AMSC N/A FSC 8120 INCH-POUND RR-C-901E 1 July 2010 SUPERSEDING RR-C-901D 21 February 2003 FEDERAL SPECIFICATION CYLINDERS, COMPRESSED GAS: SEAMLESS SHATTERPROOF, HIGH PRESSURE DOT 3AA STEEL, AND 3AL ALUMINUM The General Services
3、Administration has authorized the use or this federal specification by all federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification provides the acquisition requirements for the purchase of empty compressed gas cylinders to be used for storage, transportation, and distribution of
4、high pressure liquefied and gaseous industrial and medical compressed gases including air, argon, carbon dioxide, helium, hydrogen, nitrogen, oxygen, sulfur hexafluoride, and other gases. 1.2 Classification. The cylinders shall be of the following types, intended gas service, sizes, and valve design
5、ations (see 6.2). Type I - DOT 3AA steel II - Non-shatterable steel III - Aluminum Intended gas service - See table I Size - See tables II and III Valve designation - See table IVProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-RR-C-901E 2 1.3 Interna
6、tional standardization agreement code numbers. STANAG 2121 (see 6.8) STANAG 7146 (see 6.8) 2. APPLICABLE DOCUMENTS 2.1 Government publications. The issues of the following documents, in effect on the date of invitation for bids or request for proposal, form a part of this specification to the extent
7、 specified herein. Commercial Item Descriptions A-A-59503 - Nitrogen, Technical A-A-59860 - Valves, Cylinder, Gas (for Compressed or Liquefied Gases) (Activities outside the federal government may obtain copies of federal specifications, standards, and commercial item descriptions as specified in th
8、e General Information section of the Index of Federal Specifications, Standards and Commercial Item Descriptions. The index is for sale on a subscription basis from the General Services Administration, Federal Supply Service, Specification Section, East 470 LEnfant Plaza SW, Suite 8100, Washington,
9、DC 20407.) (Single copies of these specifications, and other federal specifications and commercial item descriptions required by activities outside the federal government for bidding purposes are available without charge from the General Services Administration, Federal Supply Service, Specification
10、 Section, East 470 LEnfant Plaza SW, Suite 8100, Washington, DC 20407.) (Federal government activities may obtain copies of federal standardization documents and the Index of Federal Specifications, Standards and Commercial Item Descriptions from established distribution points in their agencies. El
11、ectronic copies may be obtained from https:/assist.daps.dla.mil/.) Military Specifications MIL-DTL-17376/1 - Caps and Flanges, Compressed-Gas Cylinder: Caps MIL-DTL-17376/3 - Caps and Flanges Compressed-Gas Cylinder: Flanges, High Pressure Military Standard MIL-STD-101 - Color Code for Pipelines and
12、 for Compressed Gas Cylinders Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-RR-C-901E 3 (Copies of military specifications and standards required by contractors in connection with specific procurement functions are obtained from the Standardization
13、 Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. Electronic copies may be obtained from https:/assist.daps.dla.mil/.) Code of Federal Regulations (CFR) 49 CFR 173, subpart G - Gases; Preparation and Packaging 49 CFR 173.34 - Qualification, Maintenance and Use of Cy
14、linders 49 CFR 178 - Specifications for Packagings 49 CFR 178, subpart C - Specifications for Cylinders 49 CFR 178.37 - Specification 3AA and 3AAX Seamless Steel Cylinders 49 CFR 178.46 - Specification 3AL Seamless Aluminum Cylinders (The CFR is for sale on a subscription basis from the Superintende
15、nt of Documents, P.O. Box 371954, Pittsburgh, PA 15250-7954. When indicated, reprints of certain regulations may be obtained from the federal agency responsible for issuing them. Electronic copies may be obtained from http:/www.gpoaccess.gov/cfr/.) National Aeronautics and Space Administration (NASA
16、) NASA-STD-6001 - Flammability, Odor, Offgassing, and Compatibility Requirements and Test Procedures for Materials in Environments that Support Combustion (Application for copies should be addressed to NASA Technical Standards, EL01, MSFC, AL 35801 (Phone: 205-544-2448). Electronic copies may be obt
17、ained from http:/standards.nasa.gov/.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless a specific issue is identified, the issue in effect on the date of invitation for bids or request for proposal shall apply. ASTM Internation
18、al ASTM A370 - Standard Test Methods and Definitions for Mechanical Testing of Steel Products ASTM E23 - Standard Test Methods for Notched Bar Impact Testing of Metallic Materials (Application for copies should be addressed to ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohock
19、en, PA 19428-2959. Electronic copies may be obtained from http:/www.astm.org/.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-RR-C-901E 4 Compressed Gas Association (CGA) CGA G-10.1 - Commodity Specification for Nitrogen CGA S-1.1 - Pressure Relief
20、 Device Standards Part 1 Cylinders for Compressed Gases CGA TB-15 - Requirements for the Post Manufacture Tare Weight Marking of Cylinders CGA TB-17 - Test Methods for Evaluating Paints and Coatings on Refillable Steel Compressed Gas Cylinders (Application for copies should be addressed to the Compr
21、essed Gas Association, 4221 Walney Road, 5th Floor, Chantilly, VA 20151-2923. Electronic copies may be obtained from http:/ 3. REQUIREMENTS 3.1 Material, design, and construction. All cylinders shall conform to the specifications found in 49 CFR 178, subpart C. The seamless steel cylinders shall con
22、form to Department of Transportation (DOT) specification 3AA, type 4130X steel in accordance with 49 CFR 178.37. The aluminum cylinders shall conform to DOT specification 3AL in accordance with 49 CFR 178.46. The physical characteristics, accessories and special requirements shall be as specified he
23、rein and in the acquisition document. The cylinder shall be newly fabricated within one year of the date of the contract or acquisition order. 3.2 Construction. 3.2.1 Stability. Cylinders shall be true to form and shall be stable in the upright position. 3.2.2 Fragmentation resistance (non-shatterab
24、ility). The fragment resistance or non-shatterability (shatterproof) characteristics of the cylinder shall be determined by either the resultant wall stress value of the cylinder at the minimum designated test pressure or by the performance of the specified gunfire test (see 4.3.4). Cylinders manufa
25、ctured to DOT specification 3AA of 4130X steel that are greater than four inches in outside diameter shall have a maximum wall stress of 70,000 psig as stated in 49 CFR 178.37. Cylinders manufactured to DOT specification 3AA of 4130X steel that are less than four inches in diameter shall have a maxi
26、mum wall stress of 60,000 psig. Cylinders meeting these requirements shall be acceptable as non-shatterable cylinders and shall be steel stamped “NONSHAT“. Cylinders manufactured to DOT specification 3AA of 4130X steel that are less than four inches in diameter and have a resultant wall stress value
27、 greater than 60,000 psig must pass the gunfire test to be acceptable as shatterproof cylinders. Steel cylinders manufactured of other than 4130X steel to DOT specification 3AA and all aluminum cylinders must pass the gunfire test to be acceptable as shatterproof cylinders. 3.2.3 Impact resistance.
28、When impact resistance is specified (see 6.2), samples of each heat of steel represented in a lot of cylinders shall have a minimum lateral expansion of 0.015 inches or greater than 50 percent fibrous fracture at a temperature not higher than -58 F (-50 C) in accordance with ASTM E23. Sub-sized samp
29、les from a cylinder wall may be used or a sample Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-RR-C-901E 5 from a cylinder wall of greater thickness may be used if the source, processing, and heat treatment of the steel parallels the source, proces
30、sing, and heat treatment of the cylinders under consideration. 3.3 Cylinder processing. 3.3.1 Preconditioning and internal preservation. After hydrostatic and any other testing, the cylinder internal surface shall be cleaned and dried to be free of moisture, oil, grease, grit, machining products, lo
31、ose scale, slag, or other foreign materials. Rust bloom or particulate matter (approximately 1.0 to 1.5 grams) generated subsequent to inspection as a result of handling and shipping is acceptable. Cleaning agents used shall be compatible with the cylinder materials and the intended gas service. 3.3
32、.2 Oil and hydrocarbon residue. Residual oil and other hydrocarbons resulting from the manufacture of the cylinder shall be removed to a level not greater than 2.5 milligrams (mg) per square foot of internal surface area, but shall not exceed 20 mg per cylinder regardless of the size of the cylinder
33、. Trailer tubes shall not contain more than 40 mg of oil or residual hydrocarbons. Verification of cleanliness shall be measured by gravimetric or infrared analysis or any equivalent chemical analysis method. 3.3.3 Moisture content. Cylinders tested hydrostatically and/or internally flushed for clea
34、ning, 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 has a dew point lower than 30 F (-1 C). Immediately after internal drying, the cylinder shall be closed with the designated valve or
35、plug (see table IV). 3.3.4 Internal cylinder preparation. When specified (see 6.2) or as needed, the internal surface of steel cylinders shall be cleared of all mill scale, rust, and oxidation to the reduced metal level by use of an abrasive process such as shot or bead blasting. Aluminum cylinders
36、shall be cleaned free of residue by vapor degreasing or equivalent process. 3.3.5 Internal cylinder preservation. When specified (see 6.2), cylinders closed with a valve shall be pressurized to approximately 5 psig with dry oil-free nitrogen, type I, grade A or B, class 1, in accordance with A-A-595
37、03, or type I, grade L or better in accordance with CGA G-10.1. The cylinder shall then be tagged at the valve with “PRESERVED WITH NITROGEN GAS“. 3.4 Tare weight. The cylinders maximum tare weight shall be as specified in tables II or III and shall be stamped into the shoulder of the cylinder in a
38、position other than in sequence with another DOT permanent marking (see 3.6.1). The marking shall be displayed as required by CGA TB-15. The marking shall represent the tare weight of the cylinder and valve with an accuracy of 1 percent and shall be displayed in pounds (lb.) and ounces (oz.) unless
39、otherwise specified. 3.5 Delivery date. The cylinders shall be newly fabricated and delivered within one year from the date of manufacture. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-RR-C-901E 6 3.6 Cylinder identification. Unless otherwise spec
40、ified herein, markings shall be in characters not less than 0.25 inch (6.350 millimeters (mm) high. On cylinders 6 inches (152.4 mm) in outside diameter or larger, the markings shall be in characters 0.375 inch (9.525 mm) high. 3.6.1 Standard permanent markings. The standard permanent markings as re
41、quired by the appropriate DOT specification shall be plainly and permanently marked by stamping into the shoulder or the neck of each cylinder. 3.6.2 Additional special permanent markings. The following permanent markings shall be stamped into the shoulder or neck of the cylinder as they are specifi
42、ed or as they apply to the cylinder being manufactured or its dedicated application: 3.6.2.1 Ownership markings. All cylinders being purchased by a U.S. Government agency shall be stamped with “US GOVT“ to indicate government ownership. Cylinders four inches or greater in diameter shall be marked wi
43、th 0.375-inch (9.525 mm) characters. Cylinders less than four inches in diameter shall be stamped with 0.25-inch (6.350 mm) characters. The symbols shall be stamped directly below or offset 90 degrees from the DOT permanent markings. 3.6.2.2 Tare weight. All cylinders being used in liquefied gas app
44、lication shall have the tare weight applied to the cylinder (see 3.4). 3.6.2.3 Impact resistance. All cylinders tested and designated impact resistant shall have the designation of “-50 C“ applied to the cylinder. 3.6.2.4 Shatterproof. All cylinders meeting the shatterproof characteristics of this s
45、pecification shall be stamped “NONSHAT“. 3.6.3 Special markings. The following special markings shall be applied as specified in the acquisition order (see 6.2) when required: 3.6.3.1 Special cylinder applications. When specified, cylinders designated for aviators breathing oxygen (ABO), nitrogen, a
46、nd compressed air used in aircraft servicing shall be stenciled with the equivalent service pressure in kilopascals. 3.6.3.2 Specific gas applications. All cylinders that have been designated for a specific gas application shall be color-coded and stenciled in accordance with MIL-STD-101. 3.6.3.3 Me
47、dical gas cylinders. All government medical cylinders, both government-owned and vender-owned, shall be color-coded and stenciled in accordance with MIL-STD-101. All materials provided in the cylinder package shall pass the applicable tests specified in NASA-STD-6001. 3.6.3.3.1 Medical services tag.
48、 A military medical services tag shall be used on filled medical cylinders when they are purchased as part of a medical gas commodity contract. The tag shall be attached to each cylinder and the markings shall include the national stock number, the name of the specified gas, cylinder size, cylinder
49、capacity in gallons, lot number, contract number, cylinder serial number, contractors name or registered trademark, and necessary precautionary Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-RR-C-901E 7 markings. The statement, “CAUTION: Federal Law Prohibits Dispensing Without Prescription.“ shall appear on the tag, if it does not appe
