Compressed Gases cont'd - doe-hdbk-1139-3-20050081

DOE-HDBK-1139/3-2005

Sources11

Consolidated Requirements12

4.5.24 When a high pressure gas (non-liquefied) cylinder is in

ANSI Z49.1, 10.8.4.7

use, the valve shall be fully opened to prevent leakage

around the valve stem.

4.5.25 Cylinders not having a fixed hand wheel shall have

ANSI Z49.1, 10.8.4.6;

keys, handles or non-adjustable wrenches on valve

stems while cylinders are in service.

CGA G-1, 5.3.3.10;

CGA P-1, 3.8.1.1;

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

29CFR1910.253(b)(5)(iii)(L);

29CFR1926.350(d)(5)

4.5.25.1 Manifolded or coupled cylinders shall have at

29CFR1926.350(d)(2)

least one such wrench always available.

4.5.26 Cylinders having hand wheels shall not be opened

ANSI Z49.1, 10.8.4.5;

using wrenches, hammers or other tools. If the valve

cannot be opened by hand, then the manufacturer shall

CGA P-1, 3.8.1.1 ;

be notified and their directions followed.

CGA G-1, 5.3.3.2;

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

(1)

4.5.27 When cylinders are secured in a suitable hand truck,

ANSI Z-49.1, 10.8.3.10;

regulators do not have to be removed and valve

protection caps need not be in place before cylinders

CGA G-1, 5.2.5;

are moved. When cylinders are to be moved with

regulators attached, the cylinder valve must be closed.

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

29CFR1926.350(a)(6)

4.5.28 Cylinder valves shall be closed before moving

ANSI Z-49.1, 10.8.3.5;

cylinders.

CGA P-1, 3.8.1;

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

29CFR1926.350(a)(8)

4.5.29 Valve protection caps shall not be used for lifting

ANSI Z-49.1, 10.8.3.7;

cylinders.

CGA P-1, 3.5.1;

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

29CFR1926.350(a)(5)

4.5.30 When using a crane, derrick, etc. to transport cylinders,

ANSI Z-49.1, 10.8.3.8;

a cradle, boat, pallet, slingboard or other suitable

platform shall be used. Compressed gas cylinders shall

CGA G-1, 5.2.3;

be secured to the lifting device before they are hoisted.

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

29CFR1926.350(a)(2)