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Requirements for Chemical Storage cont'd - hdbk11392003vol30052
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Chemical Management (Volume 3 of 3) Consolidated Chemical User Safety and Health Requirements - index
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Requirements for Chemical Storage cont'd - hdbk11392003vol30054


DOE-HDBK-1139/3-2003
Sources10
Consolidated Requirements
4.2.5 Compressed gas cylinders in storage shall not be heated above
ANSI Z49.1, 10.8.1.8;
125F 22.
CGA G-1, 4.2.3;
CGA P-1, 3.7.2;
NFPA 51, 2.2.1;
NFPA 55, 6.6.1;
NFPA 55, 7.1.5.7
4.2.6 Compressed gases in storage shall be segregated from
ANSI Z49.1, 10.8.2.2;
incompatible materials or combustibles in storage by either a
ANSI Z49.1, 10.8.2.3;
distance of 20 ft. or by a noncombustible partition with a fire
resistance rating of hour and extending not less than 18 inches
CGA G-1, 4.2.5;
above and to the sides of the stored material. The
CGA P-1, 4.2.4;
noncombustible barrier shall be five feet high for those cylinders
CGA P-1, 4.4.4;
that are less than three and a half feet tall.
NFPA 51, 2.2.1;
[EXCEPTION: Under ANSI Z49.1 and NFPA 55 welding gases
NFPA 51, 2.4.3;
located on a weld cart are considered to be "in use" and not in
NFPA 55, 7.1.5.2;
storage. This is also consistent with the NFPA 45 definition of
"in use". Under these cited standards, then, this requirement
29CFR1926.350(a)(11;
does not apply to oxygen and fuel gases on a weld cart.
Similarly, since oxygen and fuel gases on a weld cart are
(ii);
considered to be "in use" under these standards, they also are
29CFR1910.253(b)(4)
not required to be segregated from each other.]
(iii)
[NOTE: The intent of these requirements is to discourage the
manufacture of unsafe weld carts and to prevent the practice of
removing welding gases from carts at the end of every work shift
or day, since this additional handling of the gases is considered
to be inherently more hazardous than is their temporary storage
on weld carts. It should be noted , however, that keeping oxygen
and fuel gases on a weld cart for excessively long periods
without any actual use would counter the intent of these
requirements.]
4.2.6.1 Flammable gas cylinders shall be stored a minimum
NFPA 55, 2.2.1.5
distance of 20 ft. from storage of flammable and
combustible liquids and solids.
4.2.7 The inside storage of more than 2,000 standard cubic ft. (scf) of
flammable gas, or more than 300 pounds of liquefied petroleum
(i)
gas requires a separate room, compartment, or special storage
building.
22
This requirement includes the storage of compressed gas cylinders in direct sunlight where the sunlight may cause
the cylinder to overheat.
29


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