1、Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to: STDZNMGTdla.mil or Defense Logistics Agency Aviation VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616. Since contact information can change, you m
2、ay want to verify the currency of this address information using the ASSIST database at https:/assist.daps.dla.mil/. AMSC N/A FSC 6830 METRIC BB-A-106D 27 December 2010 SUPERSEDING BB-A-106C 30 January 2001 FEDERAL SPECIFICATION ACETYLENE, TECHNICAL, DISSOLVED The General Services Administration has
3、 authorized the use of this federal specification by all federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specification covers two technical grades of acetylene dissolved in acetone. 1.2 Classification. The acetylene shall be of the following grades, as specified (see 6.2): Grade A - 99
4、.6 percent acetylene Grade B - 98.0 percent acetylene 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 specified herein. Federal Standard F
5、ED-STD-123 - Marking for Shipment (Civil Agencies) Commercial Item Description A-A-59860 - Valves, Cylinder, Gas (for Compressed or Liquefied Gases) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BB-A-106D 2 (Activities outside the federal governmen
6、t may obtain copies of federal standards and commercial item descriptions as specified in the 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, Federa
7、l Supply Service, Specification Section, East 470 LEnfant Plaza SW, Suite 8100, Washington, DC 20407.) (Single copies of this specification, and other federal specifications, standards, and commercial item descriptions required by activities outside the federal government for bidding purposes are av
8、ailable without charge from the General Services Administration, Federal Supply Service, Specification 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,
9、 Standards and Commercial Item Descriptions from established distribution points in their agencies. Electronic copies may be obtained from https:/assist.daps.dla.mil/.) Military Specification MIL-DTL-3701 - Cylinders, Compressed Gas: DOT-8 and DOT-8AL Acetylene, with Valves Military Standards MIL-ST
10、D-101 - Color Code for Pipelines and for Compressed Gas Cylinders MIL-STD-129 - Military Marking for Shipment and Storage MIL-STD-1411 - Inspection and Maintenance of Compressed Gas Cylinders (Copies of military specifications and standards required by contractors in connection with specific procure
11、ment functions are available from the Standardization Document Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. Electronic copies may be obtained from https:/assist.daps.dla.mil/.) Federal Regulations 49 CFR 171-185 - Hazardous Materials Regulations (The Code of Federal Regu
12、lations (CFR) is for sale on a subscription basis from the Superintendent 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.g
13、poaccess.gov/ecfr/.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BB-A-106D 3 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 eff
14、ect on the date of invitation for bids or request for proposal shall apply. American Society for Quality ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Application for copies should be addressed to the American Society for Quality, 600 North Plankinton Avenue, Milwaukee, WI
15、53023. Electronic copies may be obtained from http:/www.asq.org/.) ASTM International ASTM D329 - Standard Specification for Acetone (Application for copies should be addressed to ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Electronic copies may be obtained from http
16、:/www.astm.org/.) Compressed Gas Association (CGA) CGA C-13 - Guidelines for Periodic Visual Inspection and Requalification of Acetylene Cylinders CGA G-1 - Acetylene CGA G-1.1 - Commodity Specification for Acetylene CGA G-1.9 - Recommended Practices for Maintaining the Proper Solvent Level in Acety
17、lene Cylinders CGA TB-17 - Test Methods for Evaluating Paints and Coatings on Refillable Steel Compressed Gas Cylinders CGA V-9 - Compressed Gas Association Standard for Compressed Gas Cylinder Valves (Application for copies should be addressed to the Compressed Gas Association, 4221 Walney Road, 5t
18、h Floor, Chantilly, VA 20151-2923. Electronic copies may be obtained from http:/ 3. REQUIREMENTS 3.1 Material. The acetylene shall conform to the requirements of gaseous acetylene as specified in CGA G-1.1 and shown in table I. Provided by IHSNot for ResaleNo reproduction or networking permitted wit
19、hout license from IHS-,-,-BB-A-106D 4 TABLE I. Properties of acetylene. Limiting characteristics 1Grade A Grade B (Percent by volume) 2(Percent by volume) 2CGA G-1.1 Quality Verification Level QVL H QVL C Acetylene (C2H2) 99.6 minimum 98.0 minimum Phosphine (PH3) and arsine (AsH3) 30.0025 maximum 0.
20、05 maximum Hydrogen sulfide (H2S) 30.0025 maximum 0.05 maximum 1Additional information on the properties and handling of acetylene may be found in CGA G-1. 2Acetone-free basis. 3Carbide process acetylene only (see 6.3). 3.2 Cylinders and valves. The acetylene shall be contained in government-owned a
21、nd furnished cylinders conforming to MIL-DTL-3701 equipped with valves meeting all requirements of A-A-59860. When specified (see 6.2), new cylinders meeting the same requirements shall be purchased and furnished with the gas product. When specified (see 6.2), the acetylene shall be contained in sup
22、plier-owned DOT-approved cylinders meeting the requirements of 49 CFR 171-185 equipped with valves qualified to either CGA V-9 or A-A-59860. 3.3 Cylinder maintenance. Government-owned and furnished cylinders shall be inspected, maintained, and when necessary, reconditioned in accordance with MIL-STD
23、-1411 to meet all serviceability requirements of 49 CFR 171-185. Supplier-owned cylinders shall be processed using CGA C-13, CGA G-1.9, and the suppliers own approved procedures to meet all serviceability requirements of 49 CFR 171-185. 3.3.1 Painting. Government-owned and furnished cylinders requir
24、ing repainting shall be color-coded and stenciled in accordance with MIL-STD-101. The paint and the painting process shall be by any method or system that will provide a finish that meets the requirements of CGA TB-17. 3.3.2 Valves. Unless otherwise specified (see 6.2), replacement valves for any de
25、fective valves found in the government-owned and furnished cylinders shall be furnished by the supplier and shall be qualified to meet all requirements of A-A-59860. Valves in supplier-owned cylinders shall be qualified to meet all requirements of either A-A-59860 or CGA V-9. 3.3.3 Acetone. Acetone
26、for the replenishment of government-owned and furnished cylinders shall conform to ASTM D329. 3.4 Capacity. Cylinders shall be filled to volume capacity on the basis of weight (see 6.6). Cylinders shall be filled in compliance with 49 CFR 173.303; the pressure in the filled cylinder shall not exceed
27、 1723 kPa (gauge) at 21.1 C (250 pounds per square inch gauge (psig) at 70 F). 3.5 Leakage. Cylinders and valves shall not leak after being filled. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BB-A-106D 5 4. QUALITY ASSURANCE PROVISIONS 4.1 Inspec
28、tion responsibility. The supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own or any other inspection facilities and services acceptable to the government. The government reserves the right to
29、perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.1.1 Component and material inspection. The supplier is responsible for insuring that components and materials used are
30、manufactured, examined, and tested in accordance with referenced specifications and standards. The supplier shall verify that the production facility will produce acetylene that complies with the percent by volume (v/v) acetylene purity requirements of 3.1 for the grade supplied. Current analytical
31、records of acetylene production by the facility may be used to perform the verification. The analytical records shall be considered current if taken within 180 days preceding the date of contract or purchase order. When current analytical records are not available, or in case of process upset or equ
32、ipment malfunction which affects the product purity, not less than one acetylene sample from the production facility shall be tested as specified in 4.4.2.1 prior to starting or continuing production. 4.2 Quality conformance inspection. 4.2.1 Examination. Each filled cylinder shall be examined as sp
33、ecified in 4.3.1. Presence of one or more defects shall be cause for rejection of the cylinder. 4.2.2 Tests. 4.2.2.1 Individual cylinder. Each filled cylinder shall be tested for leakage as specified in 4.3.2.3. Failure of the test shall be cause for rejection of the cylinder. 4.2.2.2 Samples (carbi
34、de process acetylene only). Samples selected from each lot of carbide process acetylene shall be tested for phosphine/arsine and hydrogen sulfide as specified in 4.3.2.2. Sampling shall be from filled cylinders and shall be conducted in accordance with ASQ Z1.4. A lot shall be considered to be all c
35、ylinders filled from the same source during a consecutive 24-hour period. The acceptance quality limit (AQL) shall be as specified in the contract (see 6.2). 4.3 Inspection procedure. 4.3.1 Examination. The filled acetylene cylinders shall be examined for the following defects: a. Cylinder or valve
36、not as specified in 3.2. b. Cylinder maintenance not as specified in 3.3. c. Capacity not as specified in 3.4. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BB-A-106D 6 4.3.2 Tests. 4.3.2.1 Acetylene purity. (This test is required only for verifica
37、tion of the production facility as outlined in 4.1.1.) Compliance with the acetylene purity requirement of 3.1 shall be determined by gas chromatography or other appropriate instrumental method. Prior to the test, a few cubic feet of gas shall be discharged to purge the sampling lines. The minimum a
38、cetylene content shall be 99.6 percent (v/v) for grade A and 98.0 percent (v/v) for grade B. Otherwise, compliance with the minimum requirements has not been met and shall constitute failure of this test. 4.3.2.2 Phosphine/arsine and hydrogen sulfide (carbide process acetylene only). Compliance of c
39、arbide process acetylene with the phosphine/arsine and hydrogen sulfide requirements of 3.1 shall be determined qualitatively as specified in 4.3.2.2.1. In case of dispute, the acetylene shall be quantitatively analyzed as specified in 4.3.2.2.2. Prior to each test, a few cubic feet of gas shall be
40、discharged to purge the sampling lines. 4.3.2.2.1 Qualitative determination. The qualitative determination for both grade A and grade B acetylene may be made with color detector tubes for phosphine/arsine and for hydrogen sulfide (see 6.7). If the indicated percentage of phosphine/arsine or of hydro
41、gen sulfide is greater than that specified in 3.1, the acetylene shall have failed the test. 4.3.2.2.2 Quantitative analysis. The quantitative determination of phosphine/arsine and of hydrogen sulfide shall be by gas chromatography or other appropriate instrumental method. The maximum allowance for
42、phosphine/arsine is 0.0025 percent (v/v) for grade A and 0.05 percent (v/v) for grade B. The maximum allowance for hydrogen sulfide is 0.0025 percent (v/v) for grade A and 0.05 percent (v/v) for grade B. Quantities in excess of these respective amounts shall constitute failure of this test. Analysis
43、 by gas chromatography may be performed in lieu of the method specified in 4.3.2.2.1, if gas chromatography is the suppliers preferred method of testing. 4.3.2.3 Leakage. After filling, each cylinder shall be tested for leakage by applying a soap solution to all portions of the valve, the junction o
44、f the valve and cylinder, and the safety device on the cylinder. Care shall be taken to ensure that the solution does not contaminate the valve outlet. Any evidence of gas leakage as indicated by bubbling of the soap solution shall constitute failure of this test. 4.4 Inspection of preparation for d
45、elivery. All cylinders shall be examined to determine if any markings are missing, illegible, incorrect, or incomplete. Any one defect shall be cause for rejection. 5. PACKAGING 5.1 Packing. Shipment of the cylinders of acetylene shall conform to 49 CFR 171-185. 5.1.1 Palletization. When specified (
46、see 6.2), the cylinders of a single grade of acetylene shall be palletized together in the vertical, valve-up position, on hardwood pallets in accordance with the requirements of the procuring agency or activity. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
47、om IHS-,-,-BB-A-106D 7 5.2 Marking. The cylinders shall be marked in accordance with 49 CFR 171-185. Each cylinder shall be stenciled or tagged grade A or grade B as applicable. 5.2.1 Civil agencies. In addition to the marking specified in 5.2, the cylinders shall be marked in accordance with FED-ST
48、D-123. 5.2.2 Military agencies. In addition to the markings specified in 5.2, the cylinders shall be marked in accordance with MIL-STD-129. 6. NOTES INFORMATION FOR GUIDANCE ONLY. (This section contains information of a general or explanatory nature that is helpful, but is not mandatory.) 6.1 Intend
49、ed use. The grade A acetylene covered by this specification is used as an illumination gas for navigational lights. The grade B acetylene covered by this specification is for use in cutting and welding. 6.2 Acquisition requirements. Acquisition documents should specify the following: a. Title, number, and date of this specification. b. Grade of acetylene required (see 1.2). c. When supplier i
