1、AMSC N/A FSC 8120 INCH-POUND MIL-STD-1411B 8 June 2010 SUPERSEDING MIL-STD-1411A 22 July 2002 DEPARTMENT OF DEFENSE STANDARD PRACTICE INSPECTION AND MAINTENANCE OF COMPRESSED GAS CYLINDERS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1411B
2、 ii FOREWORD 1. This standard practice is approved for use by all departments and agencies of the Department of Defense (DoD). 2. MIL-STD-1411B, “Inspection and Maintenance of Compressed Gas Cylinders“, presents definitions, general requirements, and detailed procedures for the inspection, maintenan
3、ce, and recharging of government-owned cylinders for the procurement of compressed gases. The standard presents guidelines that recognize and define precise variations from plant to plant. It is a standard practice for the inspection and maintenance of compressed gas cylinders, which are defined in
4、procurement specifications that may present confusing or unclear inspection and maintenance methods. It is intended to resolve problems encountered by compressed gas suppliers and government procurement and inspection activities in agreeing on acceptable procedures for servicing compressed gas conta
5、iners. 3. MIL-STD-1411B addresses receiving and serviceability inspection and sets standards for acceptance and rejection of gas cylinders. It establishes procedures for internal and external maintenance. It classifies and details the recharging of cylinders and the purging and evacuating of air and
6、 residual gas from previous charging. Details are presented as guidelines for cylinder handling. 4. Instructions are given for condemnation and disposal of cylinders declared to be unfit for further use as pressure vessels. 5. The intent of this document is to provide government agencies and the com
7、pressed gas industry supporting the government with a standard practice for cylinder inspection and maintenance that is compatible with government requirements as well as industry practice. 6. This revision has resulted in many changes but the most significant are: a. Revised sections of this docume
8、nt, where applicable, to include the use of ultrasonic examination (UE) for compressed gas cylinder inspection and maintenance. The primary focus of this revision was to prescribe which instances UE may or may not be used in lieu of the currently required hydrostatic testing, as well as any addition
9、al inspection or preparatory requirements necessary to insure continued safe use, reliability and cylinder longevity. b. Added paragraph 5.3.2.1, requiring cylinder neck threads to be cleaned upon the removal of a valve and prior to any subsequent process. c. Revised paragraph 5.3.2.6.3 to limit the
10、 use of anti-seize thread compound for valve installation and require valve inlet threads to be cleaned prior to applying tape or thread compound. d. Revised paragraph 5.4.1 to increase the required number of pre-charging evacuations for cylinders in aviator breathing oxygen (ABO) service to three.
11、Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1411B iii 7. Comments, suggestions, or questions on this document should be addressed to the Defense Supply Center Richmond, ATTN: DSCR-VEB, 8000 Jefferson Davis Highway, Richmond, VA 23297-5616
12、 or emailed to STDZNMGTdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST database at https:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-14
13、11B iv CONTENTS PARAGRAPH PAGE FOREWORD . ii 1. SCOPE 1 1.1 Scope.1 1.1.1 Procedures.1 2. APPLICABLE DOCUMENTS 1 2.1 General1 2.2 Government documents 1 2.2.1 Specifications and standards.1 2.2.2 Other government publications.2 2.3 Non-government publications.3 2.4 Order of precedence4 3. DEFINITION
14、S4 3.1 Acetylene cylinders.4 3.2 Authorized repair and rebuild facilities 4 3.3 Borescope4 3.4 Calibrated cylinder4 3.4.1 Calibrated cylinder for hydrostatic testing .4 3.4.2 Calibrated cylinder for ultrasonic examination (UE) .5 3.5 Color code.5 3.6 Composite and fiberglass containers 5 3.7 Compres
15、sed Gas Association (CGA)5 3.8 Compressed gas cylinders.5 3.9 Compressed gases .5 3.10 Condemned cylinders6 3.11 Cryogenic fluids6 3.12 Cylinder service pressure and proof pressure.6 3.13 Cylinders subjected to fire 6 3.14 Department of Transportation (DOT).6 3.15 Disposable cylinders .7 3.16 Dissol
16、ved gas 7 3.17 Drawn seamless cylinders.7 3.18 Filling density .7 3.19 Hydrostatic testing 7 3.20 Liquefied petroleum gas (LPG) 8 3.21 Medical gases8 3.22 Nonshatterability.8 3.23 Office of Hazardous Materials Safety 8 3.24 Periodic test status 9 3.25 Permanent and liquefied gases9 3.26 Pressure rel
17、ief device (PRD).9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1411B v CONTENTS PARAGRAPH PAGE 3.27 Product item description (PID) .10 3.28 Registered facility.10 3.29 Spun cylinders.10 3.30 Tare weight (TW) .10 3.31 Ultrasonic examinatio
18、n (UE) 11 3.32 Water capacity 11 3.33 Welded and brazed cylinders11 3.34 Wire wrapped cylinders 11 4. GENERAL REQUIREMENTS 12 4.1 Standard procedures12 4.1.1 Receiving inspection.12 4.1.1.1 Rejection and condemnation.12 4.1.2 Serviceability inspection.16 4.1.2.1 Rejection and condemnation.16 4.1.3 M
19、aintenance16 4.1.3.1 Rejected and condemned cylinders.16 4.1.4 Cylinder charging .16 4.1.4.1 Rejection and condemnation.16 4.2 Special procedures 17 5. DETAIL REQUIREMENTS 17 5.1 Receiving inspection.17 5.1.1 Cylinder identification permanent markings 17 5.1.1.1 Serial number17 5.1.1.2 DOT specifica
20、tion and service pressure .17 5.1.1.3 Identification symbol 17 5.1.1.4 Government ownership.18 5.1.1.5 Nonshatterability (NONSHAT)18 5.1.1.6 Tare weight .18 5.1.1.7 Water capacity 18 5.1.1.8 Periodic test status 18 5.1.2 Dimensions .18 5.1.3 Color code, paint, and stenciling 19 5.1.4 Cylinder valve
21、protection cap.19 5.1.5 Cylinder valves .19 5.1.6 Change in service19 5.1.7 Damaged cylinders19 5.1.8 Foreign cylinders 19 5.1.9 Substandard cylinders .19 5.1.10 Recording of services at receiving inspection 19 5.2 Serviceability inspection.20 5.2.1 Residual gas and moisture control 20 Provided by I
22、HSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1411B vi CONTENTS PARAGRAPH PAGE 5.2.2 External inspection .20 5.2.2.1 Paint inspection.20 5.2.2.2 Valve protection cap inspection21 5.2.3 Valves and PRDs 21 5.2.3.1 PRDs .21 5.2.3.1.1 PRD CG-1 (rupture disk
23、)21 5.2.3.1.2 PRD CG-2 and CG-3 (fusible plug)21 5.2.3.1.3 PRD CG-4 and CG-5 (combination rupture disk-fusible plug)21 5.2.3.1.4 PRD CG-7 (spring loaded, reseating PRD) 22 5.2.4 Inspection of flanges.22 5.2.5 Inspection of footrings 22 5.2.6 Periodic test date inspection .22 5.2.6.1 Hydrostatic test
24、ing or UE .23 5.2.6.2 External visual inspection.24 5.2.7 General internal cylinder evaluation.24 5.2.7.1 Hammer test24 5.2.7.2 Odor test24 5.2.7.2.1 Odor test procedure.25 5.2.7.2.2 Classification of odor25 5.2.7.2.3 Odor detection personnel 25 5.2.8 Sulfur hexafluoride cylinder internal inspection
25、 25 5.2.9 Chlorine cylinder internal inspection26 5.2.10 Rejection and condemnation.26 5.2.11 Recording of required services at serviceability inspection .26 5.3 Cylinder maintenance .26 5.3.1 Periodic testing .27 5.3.1.1 Hydrostatic test and UE 27 5.3.1.1.1 Special filling limit test.27 5.3.1.1.2 T
26、en-year periodic test 28 5.3.1.2 External visual inspection.28 5.3.2 General cylinder maintenance 29 5.3.2.1 Neck threads cleaning.29 5.3.2.2 Droplight testing .29 5.3.2.2.1 Light source 29 5.3.2.2.2 Test procedure.29 5.3.2.2.3 Inspection of blind area.29 5.3.2.2.4 Interpretation of visual inspectio
27、n 30 5.3.2.3 Cylinder structural maintenance .30 5.3.2.3.1 Government cylinders DOT 3A and DOT 3AA.30 5.3.2.3.2 Government cylinders DOT 4 and DOT 830 5.3.2.3.3 Heat treatment of cylinders.30 5.3.2.4 Internal cylinder surface cleaning.31 5.3.2.4.1 Aqueous solution detergent washing 31 Provided by IH
28、SNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1411B vii CONTENTS PARAGRAPH PAGE 5.3.2.4.1.1 Procedure 31 5.3.2.4.1.2 Alternate procedure.32 5.3.2.4.2 Organic solvent washing.32 5.3.2.4.3 Vapor degreasing of cylinders 33 5.3.2.4.3.1 Procedure for vapor de
29、greasing 33 5.3.2.4.4 Mechanical cylinder cleaning .33 5.3.2.4.4.1 Shot blast.33 5.3.2.4.4.2 Rolling iron abrasives .34 5.3.2.4.4.3 Mandrel and chain 34 5.3.2.4.5 Heat treatment cleaning 34 5.3.2.4.5.1 Procedure 34 5.3.2.5 Internal cylinder drying 35 5.3.2.5.1 Ambient air drying35 5.3.2.5.2 Hot nitr
30、ogen gas drying 35 5.3.2.5.3 Vacuum and heat drying .35 5.3.2.6 Valves and PRDs 35 5.3.2.6.1 Valve maintenance35 5.3.2.6.1.1 Handwheels, packing glands, bonnet nuts, and valve seats35 5.3.2.6.1.2 Valve inlet and outlet connections36 5.3.2.6.1.3 Valve outlet caps and plugs 36 5.3.2.6.2 PRDs .36 5.3.2
31、.6.3 Valve installation 36 5.3.2.6.4 Valve replacement and disposal .37 5.3.2.6.5 Cylinder plugs in lieu of valve37 5.3.3 General maintenance of acetylene cylinders 37 5.3.3.1 Acetone adjustment.37 5.3.4 Chlorine cylinder maintenance .38 5.3.5 Special handling38 5.3.6 External cylinder surface maint
32、enance .39 5.3.6.1 Cylinder valve protection caps .39 5.3.6.2 Paint, decal, and rust removal.39 5.3.6.2.1 Release of compressed gas in 150 F stripping solution 39 5.3.6.2.2 Caustic stripping .40 5.3.6.2.3 Water rinsing of caustic solutions.40 5.3.6.3 Metal surface pretreatment .40 5.3.6.4 Prime coat
33、ing 40 5.3.6.5 Finish coating41 5.3.6.6 Touch-up painting.41 5.4 Cylinder charging .41 5.4.1 Charging cylinders with permanent gas (oxygen, nitrogen, hydrogen, argon, helium, air, and carbon monoxide) 41 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
34、,-MIL-STD-1411B viii CONTENTS PARAGRAPH PAGE 5.4.2 Charging cylinders with liquefied gases.41 5.4.2.1 Charging ammonia cylinders 42 5.4.2.2 Charging chlorine cylinders42 5.4.2.3 Charging fluorocarbon refrigerant cylinders 42 5.4.2.4 Charging cylinders with LPG .42 5.4.2.5 Charging cylinders with fue
35、l gas mixtures .43 5.4.2.6 Charging carbon dioxide cylinders.43 5.4.2.7 Charging sulfur hexafluoride cylinders 43 5.4.3 Charging cylinders with acetylene43 5.4.4 Leakage test 44 5.4.4.1 Leak testing for aviators breathing oxygen (ABO) cylinders 44 5.4.5 Special tag for filled cylinders procured by t
36、he military medical services.44 6. NOTES45 6.1 Intended use 45 6.2 Subject term (key word) listing 45 6.3 Changes from previous issue 45 TABLES I PRD designations9 II Inspection and maintenance procedure.13 III K factor and maximum elastic expansion (EE) 28 Provided by IHSNot for ResaleNo reproducti
37、on or networking permitted without license from IHS-,-,-MIL-STD-1411B 1 l. SCOPE 1.1 Scope. This standard defines the requirements and procedures for the inspection, maintenance, and charging of government-owned cylinders by gas suppliers. This standard is intended to assure that the cylinders are s
38、erviced to meet safety standards and to assure that the quality of the gas supplied is not degraded by a government container. This standard is also applicable to cylinders that require reconditioning, repair, and rebuilding to assure a level of renewal that meets the needs of the government and ind
39、ustry in gas handling. This standard is also to be a guide when cylinders are sorted, graded, and classified for storage, salvage, or disposal in depot facilities. 1.1.1 Procedures. Procedures should be as follows: a. Receiving inspection. b. Serviceability inspection. c. Cylinder and valve maintena
40、nce and repair. d. Cylinder purging and recharging. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this standard. This section does not include documents cited in other sections of this standard or recommended for additional informat
41、ion or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this standard, whether or not they are listed. 2.2 Government documents. 2.2.1 Specif
42、ications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATION TT-C-490 - Chemical Conversion Coatings and
43、 Pretreatments for Ferrous Surfaces (Base for Organic Coatings) FEDERAL STANDARD FED-STD-595 - Colors Used in Government Procurement Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-1411B 2 COMMERICAL ITEM DESCRIPTIONS A-A-3165 - Lacquer, Glos
44、s, for Aircraft Use A-A-58092 - Tape, Antiseize, Polytetrafluorethylene A-A-59860 - Valves, Cylinder, Gas (for Compressed or Liquefied Gases) DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-C-8514 - Coating Compound, Metal Pretreatment, Resin-Acid DOD-P-15328 - Primer (Wash), Pretreatment (Formula No. 117
45、for Metals) (Metric) MIL-DTL-17376/1 - Caps and Flanges, Compressed-Gas Cylinder: Caps MIL-DTL-17376/3 - Caps and Flanges, Compressed-Gas Cylinder: Flanges, High Pressure MIL-PRF-25567 - Leak Detection Compound, Oxygen Systems MS26545 - Cylinders; Steel; Compressed Gas; Non-Shatterable; Seamless; 18
46、00 PSI, and 2100 PSI DEPARTMENT OF DEFENSE STANDARD MIL-STD-101 - Color Code for Pipelines and for Compressed Gas Cylinders (Copies of these documents are available online at https:/assist.daps.dla.mil/ or from the Standardization Documents Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia,
47、PA 19111-5094.) 2.2.2 Other government publications. The following other government publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF TRANSPORTATION (DOT)
48、DOT-SP 14313 (Copies of this document are available online at http:/hazmat.dot.gov/sp_app/special_permits/spec_perm_index.htm or from the Associate Administrator for Hazardous Materials Safety, Pipeline and Hazardous Material Safety Administration, Department of Transportation, Attention: PHH-31, Wa
49、shington, D.C. 20590.) NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (NASA) NASA-STD-6001 - Flammability, Odor, Offgassing, and Compatibility Requirements and Test Procedures for Materials in Environments that Support Combustion (Copies of this document are available online at http:/standards.nasa.gov/ or from NASA Technical Stand
