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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Cylinder gas service

Detailed requirements

Acetylene

Fuel gas mix

Air - human respiration

Air - industrial

Argon - inert

Butane - propane

Carbon dioxide

Carbon monoxide

Chlorine

Fluorocarbons

Helium - inert

Hydrogen

Inert  nitrogen O.F.

Inert  nitrogen O.T.

Oxygen - ABO

Oxygen - technical

Oxygen - medical

Methyl bromide

Sulfur hexafluoride

Ammonia anhydrous

Detailed requirements

Detailed requirements

5.

5.

Receiving inspection complete except as listed

5.1

5.1.1.5

5.1.1.7

5.1.6

5.1.1.5

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.5

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.5

5.1.1.5

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.6

5.1.1.7

5.1.1.5

5.1.1.7

5.1.1.5

5.1

Serviceability inspection

5.2

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5.2

Residual gas and moisture control

5.2.1

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5.2.1

External inspection

5.2.2

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5.2.2

Paint inspection

5.2.2.1

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5.2.2.1

Valve protection cap inspection

5.2.2.2

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5.2.2.2

Valves and PRDs

5.2.3

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5.2.3

PRDs

5.2.3.1

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5.2.3.1

Inspection of flanges

5.2.4

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5.2.4

Inspection of footrings

5.2.5

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5.2.5

Periodic test date inspection

5.2.6

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5.2.6

Hydrostatic testing

5.2.6.1

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5.2.6.1

Ultrasonic examination1

5.2.6.1

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5.2.6.1

External visual inspection

5.2.6.2

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5.2.6.2

General internal cylinder evaluation

5.2.7

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5.2.7

Hammer test

5.2.7.1

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5.2.7.1

Odor test

5.2.7.2

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5.2.7.2

Sulfur hexafluoride cylinder internal inspection

5.2.8

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5.2.8

Chlorine cylinder internal insp.

5.2.9

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5.2.9

Rejection and condemnation

5.2.10

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5.2.10

Recording required services

5.2.11

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5.2.11