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Subchapter 7. General Industry Safety Orders
Group 16. Control of Hazardous Substances
Article 109. Hazardous Substances and Processes
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§5177. Spontaneously Combustible Material.

NOTE: Provisions of this order do not apply to operations in the manufacture of spontaneously combustible material.

(a) Waste materials prone to spontaneous combustion shall be disposed of as frequently as necessary to prevent their becoming a hazard. Rags soaked with vegetable or fish oil should be disposed of daily and kept in covered containers or water-filled containers until disposed of.

(b) Accumulations of seed, fish meal, etc. from which oil has been extracted shall be stored in a location where fire originating from spontaneous combustion will not endanger employees; and shall be disposed of in a safe manner as often as may be necessary to preclude likelihood of spontaneous combustion.

NOTE: Unless a solvent is used in the extraction process, such materials frequently contain enough residual oil to be prone to spontaneous combustion.

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


1. Amendment of subsection (a) filed 9-14-78; effective thirtieth day thereafter (Register 78, No. 37).

2. Amendment filed 12-10-87; operative 1-9-88 (Register 87, No. 51).

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