Compressed Gases cont'd - doe-hdbk-1139-3-20050077

DOE-HDBK-1139/3-2005

Sources11

Consolidated Requirements12

4.5.6.2 Complete removal of the stem from a

29CFR1910.253(b)(5)(ii)(R)

diaphragm-type cylinder valve shall be

(3)

avoided.

[NOTE: Stems may be removed before

cylinder disposal.]

4.5.7

When compressed gas cylinders are not in use or are

ANSI Z-49.1, 10.8.4.10;

empty, their valves shall be closed.

CGA G-1, 5.3.3.11;

CGA G-1, 4.2.11;

29CFR1910.253(b)(2)(ii);

29CFR1910.253(b)(2)(iii);

29CFR1910.253(b)(5)(ii)(G);

29CFR1910.253(b)(5)(ii)(H);

29CFR1926.350(a)(8)

4.5.8

Where cylinders are designed to accept valve

ANSI Z-49.1, 10.8.3.6;

protection caps, caps shall be in place and hand tight at

all times except when connected for use.

CGA G-1, 5.1.9;

CGA G-1, 5.5.1;

CGA P-1, 3.4.1;

NFPA 55, 7.1.4.2;

29CFR1910.253(b)(2)(iv);

29CFR1910.253(b)(5)(ii)(A);

29CFR1926.350(a)(1)

4.5.9

Where valve outlet caps and/or plugs are provided by

CGA P-1, 3.4.2;

the manufacturer, the user shall keep the device on the

valve outlet at all times except when secured and

NFPA 55, 7.1.4.3.1

connected for use.

4.5.9.2 Valve outlet caps and/or plugs shall be in place

CGA G-1, 5.5.1;

and tightened before shipment of the cylinder

CGA P-1, 3.4.3

back to the supplier.

4.5.10 Pry bars shall not be used under valves or valve

ANSI Z-49.1, 10.8.3.2;

protection caps to pry cylinders loose when frozen or

otherwise affixed to the ground.

29CFR1910.253(b)(5)(ii)(C);

29CFR1926.350(a)(5)

4.5.10.1 Warm, not boiling water shall be used to

29CFR1926.350(a)(5)

thaw cylinders loose.