manual fire fighting operations, building egress, and
evacuation of adjacent facilities.
188.8.131.52 Cutting and welding operations in areas where organic
NFPA 432, 4.7.2
peroxides are stored shall not be performed until all
organic peroxide formulations have been removed.
4.1.3 Chemical storage areas shall be secured using physical or
ANSI Z 49.1, 10.8.2.1;
CGA G-1, 4.2.14;
CGA P-1, 184.108.40.206;
NFPA 30, 4.7.4;
NFPA 51, 2.2.1;
NFPA 55, 220.127.116.11;
4.1.4 "No smoking" signs shall be posted at all entrances to areas
CGA P-1, 18.104.22.168;
where oxidizers, organic peroxides, or flammable gases are
NFPA 55, 22.214.171.124:
NFPA 430, 2.9.2;
NFPA 432, 4.6
4.1.5 Ignition sources such as open flames, smoking, spark producing
NFPA 30, 4.10;
equipment, static electricity, and other hot sources shall not be
NFPA 430, 2.9.1
permitted in areas where chemicals are stored unless reviewed
4.1.6 All chemicals shall be properly labeled.
NFPA 430, 2.2.3;
4.1.7 Chemicals shall be stored compatibly and in a way to prevent
CGA P-1, 3.7.2;
contact with incompatible materials. This includes preventing
liquids from flowing out of a chemical storage area into another
NFPA 45, 126.96.36.199;
area where they may be exposed to incompatible materials.
NFPA 55, 188.8.131.52.1;
It is recommended that a graded approach be used in meeting this requirement.
Restrictions and requirements for welding and cutting activities at locations where chemicals are used and stored
are based on specific conditions. Consult your local facility welding and cutting program to determine what
requirements are applicable to specific activities and conditions at your site.
This requirement is intended to keep chemicals safe during routine storage and during an upset condition such as a
fire. Therefore, chemicals that are only incompatible at elevated temperatures are still considered incompatible
during routine storage conditions due to the possibility of fire or other upset condition. This document does not