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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
56


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