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Requirements for Hazard Control cont'd - hdbk11392003vol30066
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Chemical Management (Volume 3 of 3) Consolidated Chemical User Safety and Health Requirements - index
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Requirements for Hazard Control cont'd - hdbk11392003vol30068


DOE-HDBK-1139/3-2003
Sources10
Consolidated Requirements
4.3.4 If a laboratory contains explosion hazards, as defined in
NFPA 45, 5.1
sections 2.3.1 and 2.3.2 of NFPA 45, protection shall be
provided by one or more of the following:
limiting the amounts of flammable or reactive chemicals
or chemicals with unknown characteristics used in or
exposed by experiments;
special preventive or protective measures for the
reactions, equipment, or materials themselves (e.g.,
high-speed fire detection with deluge sprinklers,
explosion-resistant equipment or enclosures);
remote control equipment;
sufficient deflagration venting in outside walls; and,
conducting experiments in a detached or isolated
building, or outdoors.
4.3.4.1 Other explosion hazard protection may be
NFPA 45, 5.2 -5.5
considered including:
Explosion-resistant construction;
Explosion venting;
Controlled access to laboratory; and,
Regularly scheduled inspection and maintenance
4.3.5
Handling of laboratory chemicals
NFPA 45, 7.2
4.3.5.1 Chemicals shall not be brought into a laboratory
NFPA 45, 7.2.1.1
work area unless design, construction, and fire
protection of the facilities are commensurate with
the quantities and hazards of the chemicals
involved.
4.3.5.2 Receiving, transporting, unpacking, and dispensing
NFPA 45, 7.2.2.1
of chemicals and other hazardous materials shall be
carried out by trained personnel in such locations
and in such a manner as to minimize hazards from
flammable, reactive, or toxic materials.
4.3.5.3 Class I liquids shall not be stored or transferred
NFPA 45, 7.2.2.5
from one vessel to another in any access corridor,
open plan buildings, or ancillary spaces
unprotected from the exit access corridor.
4.3.5.4 Transfer of Class I liquids to smaller containers
NFPA 45, 7.2.2.6
from bulk stock containers not exceeding 19L (5
gal.) in capacity shall be performed as follows:
In a laboratory hood;
In an area provided with ventilation adequate to
prevent accumulations of flammable vapor/air
mixtures from exceeding 25 percent of the lower
flammable limit;
In a liquid storage area specifically designed and
43


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