Compressed Gases cont'd - doe-hdbk-1139-3-20050052

DOE-HDBK-1139/3-2005

Sources11

Consolidated Requirements12

4.2.1.1 Hazard ratings shall be assigned in accordance with

NFPA 55, 6.1.13(A);

NFPA 704.

NFPA 704

4.2.1.2 Signs shall not be obscured or removed.

NFPA 55, 6.13.2.1

4.2.1.3 Signs shall prohibit smoking or an open flame within 20

CGA G-1, 4.2.9;

ft of where toxic, pyrophoric, oxidizing, or flammable

CGA P-1, 4.2.1.5;

gases are stored.

NFPA 55, 6.13.2.2;

NFPA 55, 7.1.1;

NFPA 55, 7.6.3.2;

29CFR1910.253(b)(3)

(i)

4.2.2 Compressed gas cylinders shall be stored away from stairways,

ANSI Z49.1, 10.8.2.1;

elevators, exit routes, or gangways, in assigned places where

they will not be exposed to physical damage (for example,

CGA G-1, 4.2.4;

damage from vehicles, damage from falling ice, etc.).

CGA P-1, 3.7.2;

CGA P-1, 3.7.3;

NFPA 51, 2.2.1;

NFPA 55, 7.1.5.4;

NFPA 55, 7.1.5.6;

NFPA 55, 7.1.5.9;

29CFR1926.350(a)(11)

4.2.3 Compressed gas cylinders shall be stored in an upright position

ANSI Z49.1, 10.8.2.1;

(see definition) with their valve protection caps in place and

secured to prevent cylinders from falling over or being knocked

CGA G-1, 4.2.8;

over.

CGA P-1, 3.7.4;

[EXCEPTION: All requirements cited here indicate that upright

NFPA 55, 2.2.1.6;

storage is not required for lecture bottles or cylinders used in

NFPA 55, 7.1.3.4;

self-contained breathing apparatus.]

NFPA 55, 7.2.1.2;

29CFR1910.253(b)(2)

(ii)

4.2.4 Overhead cover for outdoor storage areas of compressed gases

NFPA 55, 6.6.2

shall be of non-combustible construction, open on three sides

and shall not be considered indoor storage.

4.2.4.1 Storage areas shall be kept clear of dry vegetation and

NFPA 55, 7.1.5.3

combustible materials for a minimum distance of 15 ft in

all directions.

4.2.4.2 Cylinders stored outdoors shall not be placed in direct

CGA P-1, 3.7.3.1;

contact with the earth or on surfaces where water can

CGA G-1, 4.2.13;

accumulate.

NFPA 55, 2.1.6.1.b