OSHA CFR 29 - Flammable Liquid Storage

1910.106(a)(13)

Flammable aerosol shall mean a flammable aerosol as defined by Appendix B to § 1910.1200—Physical Hazard Criteria. For the purposes of paragraph (d) of this section, such aerosols are considered Category 1 flammable liquids

Note: Under 1910.1200 Aerosols are re-guarded as explosive flammable under OSHA 1910.1200—Physical Hazard Criteria.

OSHA 1910.106(d)(3): Design, construction, and capacity of storage cabinets

i) Maximum capacity. Not more than 60 gallons of Category 1, 2, or 3 flammable liquids, nor more than 120 gallons of Category 4 flammable liquids may be stored in a storage cabinet.

(ii)(a) Fire resistance. Storage cabinets shall be designed and constructed to limit the internal temperature to not more than 325 deg. F. when subjected to a 10-minute fire test using the standard time-temperature curve as set forth in Standard Methods of Fire Tests of Building Construction and Materials, NFPA 251-1969, which is incorporated by reference as specified in Sec. 1910.6. All joints and seams shall remain tight and the door shall remain securely closed during the fire test. Cabinets shall be labeled in conspicuous lettering, "Flammable - Keep Fire Away."

(a) Metal cabinets constructed in the following manner shall be deemed to be in compliance. The bottom, top, door, and sides of cabinet shall be at least No. 18 gage sheet iron and double walled with 1 1/2 - inch air space. Joints shall be riveted, welded or made tight by some equally effective means. The door shall be provided with a three-point lock, and the door sill shall be raised at least 2 inches above the bottom of the cabinet.
(b) Wooden cabinets ....

OSHA CFR 1910.106(e)(2)

(i)"Application." This subparagraph shall be applicable to those portions of an industrial plant where the use and handling of flammable liquids is only incidental to the principal business, such as automobile assembly, construction of electronic equipment, furniture manufac¬turing, or other similar activities.

(ii)"Containers." flammable liquids shall be stored in tanks or closed containers.

(a)Except as provided in subdivisions (b) and (c) of this subdivision, all storage shall comply with paragraph (d) (3) or (4) of this section.
(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 Category 1 flammable liquids in containers
(2) 120 gallons of Category 2, 3, or 4 flammable liquids in containers
(3) 660 gallons of Category 2, 3, or 4 flammable liquids in a single portable tank.

Please consult your local authority having jurisdiction with your questions and for guidance in conforming to laws as they apply to your application. This is only meant for a reference and does not imply a warranty.