Compressed Gases cont'd - doe-hdbk-1139-3-20050079

DOE-HDBK-1139/3-2005

Sources11

Consolidated Requirements12

4.5.15 Oxygen and fuel and other compressed gas cylinders,

ANSI Z49.1, 10.3.3;

equipment, pipelines or apparatus shall not be used

ANSI Z49.1, 10.6.5;

interchangeably with any other gas and each shall be

used only for the service for which it was approved.

CGA G-1, 5.3.3.4;

CGA P-1, 3.8.7;

29CFR1910.253(3)(1);

29CFR1926.350(f)(1)

4.5.16 All connections shall be gas tight and no leaks shall be

ANSI Z49.1, 10.5.2.1;

present in the system.

CGA G-1, 5.3.3.6;

CGA P-1, 3.8.4;

NFPA 55, 7.3.1.4.1

4.5.16.1 A flame shall not be used for the detection of

ANSI Z49.1, 10.5.2.1;

leaks in compressed gas systems. Soapy

water is one acceptable method.

CGA P-1, 4.2.1.5

4.5.17 Backflow protection shall be used when the backflow

CGA P-1, 3.7.5;

of gas can result in a hazardous condition.

CGA P-1, 3.8.2;

NFPA 55, 7.3.1.4.2

4.5.18 Compressed gas systems shall be designed for their

NFPA 55, 7.3.1.2;

intended use and shall be designed by persons

NPFA 55, 7.5-7.10

competent in such design. .

[NOTE: Additional requirements for corrosive,

flammable, oxidizing, pyrophoric, toxic/highly toxic,

and unstable reactive gases can be found in NFPA 55,

7.5-7.10.]

4.5.19 Compressed gases shall never be used from cylinders or

ANSI Z49.1, 10.8.4.1;

high pressure manifolds without reducing the pressure

through a suitable regulator unless the equipment used

CGA G-1, 5.3.1;

is designed to withstand full cylinder pressure.

CGA P-1, 3.8.8;

NFPA 45, 8.1.5.2;

NFPA 51, 3-1.4;

NFPA 51, 3-2.5;

NFPA 51, 3-4.5;

29CFR1926.350(d)(3);

29CFR1910.253(b)(5)(iii)(I)