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Flammable Liquid Storage (OSHA & NFPA 30)

Primary Authority: OSHA 29 CFR 1910.106 / Engineering Standard: NFPA 30

Technical Specifications

  • Cabinet Construction (§1910.106(d)(3)): Must be double-walled 18-gauge sheet steel with a 1.5-inch insulating air space. Joints must be riveted, welded, or made tight by some equally effective means.

  • Sump Integrity: The door sill must be raised at least 2 inches above the cabinet bottom to retain spilled liquids within the cabinet.

  • Quantity Limits: No more than 60 gallons of Category 1, 2, or 3 flammable liquids, or 120 gallons of Category 4 flammable liquids, may be stored in a single cabinet.

FAQs

  • How much flammable liquid can be stored in a safety cabinet?

    • Per OSHA 1910.106, a single cabinet is limited to 60 gallons of Category 1-3 liquids or 120 gallons of Category 4 liquids.

  • Are flammable storage cabinets required to be vented?

    • No. OSHA does not require venting. If a cabinet is vented for odor control, it must be vented directly to the outdoors in a manner that does not compromise the fire-resistance of the cabinet.

  • How many flammable cabinets can I have in one room?

    • OSHA allows a maximum of three storage cabinets in a single fire area.

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