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Subchapter 4. Construction Safety Orders
Article 36. Fire Protection and Prevention

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§1932. Outside Storage.

(a) Storage outside buildings shall be in accordance with Table B.

Table B. Outdoor Liquid Storage in Containers and Portable Tanks
1 2 3 4 5
Class Container Storage Max. per Pile Portable Tank Storage Max. per Pile Gallons (1) Distance Between Piles or Racks(ft) Distance to Property Line That Can Be Built Upon (ft) (2)(3) Distance to Street, Alley, or a Public Way (ft) (3)
Gallons
(1)(4)
Height
(ft)
Gallons
(1)(4)
Height
(ft)
IA 1,100 10 2,200 7 5 50 10
IB 2,200 12 4,400 14 5 50 10
IC 4,400 12 8,800 14 5 50 10
II 8,800 12 17,600 14 5 25 5
III 22,000 18 44,000 14 5 10 5

NOTE 1: When two or more classes of materials are stored in a single pile, the maximum gallonage in that pile shall be the smallest of the two or more separate gallonages.

NOTE 2: Within 200 feet of each container, there shall be a 12-foot wide access way to permit approach of fire control apparatus.

NOTE 3: The distances listed apply to properties that have protection for exposures as defined. If there are exposures, and such protection for exposures does not exist, the distances in column four shall be doubled.

NOTE 4: When total quantity stored does not exceed 50% of maximum per pile, the distances in columns four and five may be reduced 50%, but not less than three feet.

(b) The storage area shall be graded in a manner to divert possible spills away from buildings or other exposures or shall be surrounded by a curb at least 12 inches high. When curbs are used, provisions shall be made for draining of accumulations of ground or rain water or spills of flammable or combustible liquids. Drains shall terminate at a safe location and shall be accessible to operation under fire conditions.

(c) All available precautions shall be taken to protect the storage area against tampering or trespassers where necessary. The area shall be kept free of vegetation and combustible material.

(d) Each portable tank shall be provided with one or more devices installed in the top with sufficient emergency venting capacity to limit internal pressure under fire exposure conditions to 10 psig, or 30 percent of the bursting pressure of the tank, whichever is greater. The total venting capacity shall be not less than that specified in Section 1932(e) below. At least one pressure-actuated vent having a minimum capacity of 6,000 cubic feet of free air per hour (14.7 psig and 60°F.) shall be used. It shall be set to open at not less than 5 psig. If fusible vents are used, they shall be actuated by elements that operate at a temperature not exceeding 300° F.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.

HISTORY

1. Amendment filed 10-9-86; effective thirtieth day thereafter (Register 86, No. 43).

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