Compressed Gases cont'd - doe-hdbk-1139-3-20050080

DOE-HDBK-1139/3-2005

Sources11

Consolidated Requirements12

4.5.19.1 Unless connected to a manifold, oxygen from

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

a cylinder shall not be used without a

regulator.

4.5.20 Approved gas regulators and pressure reducing valves

ANSI Z49.1, 10.7.1;

shall be used only for the gas and pressures for which

ANSI Z49.1, 10.7.2;

they are labeled.

CGA G-1, 5.3.3.4;

NFPA 51, 5-6;

NFPA 45, 8.1.5.2;

29CFR1910.253(a)(3);

29CFR1910.253(e)(6)(i)

4.5.21 Regulators, including their related gauges, shall be in

29CFR1926.350(h);

proper working order while in use.

4.5.21.1 Union nuts and connections shall be

ANSI Z49.1, 10.7.3;

inspected before cylinder use to detect faulty

seals, which could cause leakage. Faulty

29CFR1910.253(e)(6)(iv)

nuts and connectors shall be replaced.

4.5.21.2 A qualified mechanic shall perform repair of

ANSI Z49.1 10.7.6;

regulators or their parts.

CGA G-1, 5.1.5;

29CFR1910.253(e)(6)(ii)

4.5.22 Before a regulator is removed from a cylinder, the

ANSI Z49.1, 10.7.5;

cylinder valve shall be closed and the pressure released

ANSI Z49.1, 10.8.4.11;

from the regulator.

CGA G-1, 5.3.3.11;

CGA P-1, 3.8.6;

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

29CFR1926.350(d)(4)

4.5.23 Cylinder valves shall always be opened slowly to

ANSI Z49.1, 10.7.5;

prevent damage to the regulator.

ANSI Z49.1, 10.8.4.4;

CGA G-1, 5.3.3.7;

CGA P-1, 3.8.1.1;

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

29CFR1926.350(d)(2)

4.5.23.1 Personnel shall stand to the side and not in

ANSI Z49.1 10.8.4.4;

front of the regulator orifice when the cylinder

valve is opened.

CGA P-1, 3.8.1