Compressed Gases cont'd - doe-hdbk-1139-3-20050086

DOE-HDBK-1139/3-2005

Sources11

Consolidated Requirements12

4.5.59 If a leak is found around the valve stem of a fuel gas

ANSI Z49.1, 10.8.5.1;

cylinder, then the packing nuts shall be tightened and

the cylinder valve closed.

CGA G-1, 5.6.2;

29CFR1926.350(d)(5)

4.5.59.1

If these actions do not stop the leak (because

ANSI Z49.1, 10.8.5.2;

the leak is in the valve stem, valve seat,

cylinder fuse plug, etc.) then the cylinder

CGA G-1, 5.6.3;

shall be moved from the work area to a safe

location outdoors and the cylinder shall be

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

properly marked.

29CFR1926.350(d)(5)

4.5.59.2

Precautionary signs warning of a fire hazard

ANSI Z49.1, 10.8.5.2;

shall be posted where leaking fuel cylinders

are located.

CGA G-1, 5.6.3;

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

4.5.59.3

If a leaking fuel cylinder cannot be moved,

ANSI Z49.1, 10.8.5.2

then the area shall be evacuated and the fire

department shall be summoned for

assistance.

4.5.59.4

Small fires at fuel gas cylinders shall be

ANSI Z49.1, 10.8.5.3

extinguished if possible without endangering

personnel by either shutting off the valve or

by the use of water.

4.5.59.4.1 Personnel shall evacuate the area

ANSI Z49.1, 10.8.5.3

and the fire department

summoned for assistance if a

cylinder fire cannot be easily

extinguished.

4.5.60 When compressed gas lines are being purged of air,

NFPA 51, 4-4.2;

oxygen or combustible gas, then sources of ignition

NFPA 51, 4-5.2;

shall not be allowed near uncapped openings.

29CFR1910.253(d)(5)(ii)

4.5.61 The use of liquid acetylene is prohibited.

NFPA 51, 1-3.1

4.5.62 Details for the following compressed gases can be

found in the listed citations:

4.5.62.1 Acetylene

29CFR1910.102

4.5.62.2 Hydrogen

29CFR1910.103

4.5.62.3 Oxygen

29CFR1910.104