MIL-STD-1411 Inspection And Maintenance Of Compressed Gas CylindersThis 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 serviced 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 industry 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.

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MIL-STD-1411B

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 examination (UE) ........................................................................11

3.32                 Water capacity ..............................................................................................11

3.33                 Welded and brazed cylinders........................................................................11

3.34                 Wire wrapped cylinders ................................................................................11

4.               GENERAL REQUIREMENTS ..........................................................................12

4.1                   Standard procedures......................................................................................12

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                Maintenance..................................................................................................16

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 number................................................................................................17

5.1.1.2             DOT specification 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 protection cap.......................................................................19

5.1.5                Cylinder valves .............................................................................................19

5.1.6                Change in service..........................................................................................19

5.1.7                Damaged cylinders........................................................................................19

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

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