According to NFPA 400, Table 5.2.1.1.3, the maximum allowable quantity (MAQ) of a nonliquified oxidizing gas per control area in an unsprinklered area is 2000 ft3 (56 m3) when stored in a gas cabinet. This quantity can be increased by 100% if the area is sprinklered or by 300% if the area is also provided with a gas detection system. A gas cabinet is a ventilated enclosure for the storage of one or more compressed gas containers that provides a method of control for potential leakage or fire exposure hazards [NFPA 400,3.3.32].References:NFPA 400, Table 5.2.1.1.3;NFPA 400, 3.3.32;NFPA 400, 5.2.1.1.3.1;NFPA 400, 5.2.1.1.3.2.
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