3903.5 Use of Flammable and Combustible Liquids.

Extraction and post oil processing operations using flammable liquids or combustible liquids heated above

their flashpoint, including dispensing of flammable liquids between containers, shall be performed in one of the following locations:

An exhausted chemical fume hood installed in accordance with the California Building Code and California Mechanical Code.

A room or approved exhausted enclosure with an approved exhaust system installed in accordance with the California Mechanical Code.

Electrical equipment used within the chemical fume hood shall be rated for use in flammable atmospheres. Heating of flammable or combustible liquids over an open flame is prohibited.

Exceptions:

The use of a heating element not rated for flammable atmospheres, where documentation from the manufacture, or approved testing laboratory indicates the element is rated for heating of flammable liquids.

Unheated processes at atmospheric pressure using less than 16 oz. (473 ml) of flammable liquids shall not be required to comply with 3903.5(1) or 3903.5(2).

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California Fire Code, Section 3903.5.1 and 3903.5.2 are added to read:

3903.5.1 Electrical Components. All electrical components within the chemical fume hood, room, or exhausted enclosure shall be approved permanent wiring, interlocked such that the exhaust system shall be in operation for lighting and components to be used.

3903.5.2 Refrigerators, Freezers, and Cooling Equipment. Refrigerators, freezers, and other cooling equipment used to store of cool flammable liquids shall be listed for the storage of flammable/combustible liquids or shall be listed for Class I, Division 1 locations, as described in the California Electrical Code.

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California Fire Code, Section 3903.6 is amended to read: