With improper storage and handling of flammable liquids being the leading cause of industrial fires, OSHA is always on the look out for violations. Proper storage of flammable liquids can help eliminate millions of dollars of damage, help save the lives of your employees and prevent OSHA fines.
A summary of applicable regulations and codes are noted below. Always check with local regulators to insure you comply.
OSHA 29 CFR 1910.106 (e)(2)(ii)(b):
Incidental storage or use of flammable and combustible liquids.
(b) The quantity of liquid that may be located outside of an inside storage room or
storage cabinet in a building or in any one fire area of a building shall not exceed:
(1) 25 gallons of Class IA liquids in containers
(2) 120 gallons of Class IB, IC, II, or III liquids in containers
(3) 660 gallons of Class IB, IC, II, or III liquids in a single portable tank.
Uniform Fire Code 79.201:
(g) Storage Cabinets. 1. General. When provisions of this code require that liquid containers be stored in storage cabinets, such cabinets, and storage shall be in accordance with this section. Cabinets shall be conspicuously labeled in red letters on contrasting background FLAMMABLE - KEEP FIRE AWAY.
2. Quantities. The quantity of Class I or Class II liquids shall not exceed 60 gallons and the total quantities of all liquids in a storage cabinet shall not exceed 120 gallons.
3. Construction. Cabinets may be constructed of wood or metal. Cabinets shall be listed or constructed in accordance with the following:
A. Unlisted metal cabinets. Metal cabinets shall be of steel having a thickness of not less than 0.043 inch. The cabinet, including the door, shall be double walled with 1½ inch air space between the walls. Joints shall be riveted or welded and shall be tight fitting. Doors shall be well fitted, self-closing, and equipped with a latching device. The bottom of the cabinet shall be liquid-tight to a height of at least two inches.
Maximum Storage Quantities for Cabinets
|Liquid Class||Maximum Storage Capacity|
|Flammable/Class I||60 gallons|
|Combustible/Class II||60 gallons|
|Combustible/Class III||120 gallons|
|Combination of Classes||120 gallons *|
* Not more than 60 gallons may be Class I and Class II liquids. No more than 120 gallons of Class III liquids may be stored in a storage cabinet, according to OSHA 29 CFR 1910.106(d)(3) and NFPA 30 Section 4-3.1.
Note: Not more than three such cabinets may be located in a single fire area, according to NFPA 30 Section 4-3.1.
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