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Subchapter 7. General Industry Safety Orders
Group 20. Flammable Liquids, Gases and Vapors
Article 148. Refineries, Chemical Plants, Wineries and Distilleries

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§5629. Scope.

The requirements contained in this Article shall also apply to petroleum refineries which are in addition covered in the Petroleum Safety Orders Refining, Transportation, Handling.

(a) Flammable and combustible liquids shall be stored in tanks, containers or in portable tanks. Tanks shall be installed in accordance with Article 145 except process units shall be located in accordance with (d) below.

(b) Piping systems shall be in accordance with Article 146. Fired and unfired pressure vessels shall be in accordance with the Boiler and Fired Pressure Vessel Safety Orders and the Unfired Pressure Vessel Safety Orders.

(c) Wharves handling flammable or combustible liquids shall be in accordance with Section 5620.

(d) Process units shall be located so that they are accessible from at least one side for the purpose of fire control.

(e) Portable fire extinguishment and control equipment shall be provided in such quantities and types as are needed for the special hazards of operation and storage. See Article 157.

(f) Water shall be available in volume to supply the largest single fixed installation requirement plus not less than 250 gallons per minute for hose streams.

(g) Special extinguishing equipment such as that utilizing foam, inert gas, or dry chemical shall be provided as the need is indicated by the special hazards of operation and storage.

(h) Smoking shall be permitted only in approved areas. (Title 24, T8-5629)

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


1. Amendment filed 7-16-76; effective thirtieth day thereafter (Register 76, No. 29).

2. Amendment of subsection (d) filed 9-18-80; effective thirtieth day thereafter (Register 80, No. 38).

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