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(a) Before a source of ignition may be used in an area where flammable gases or vapors are likely to occur, a qualified person shall make a test by chemical analysis or with an approved device to determine if a flammable atmosphere exists.
(b) No source of ignition shall be permitted in an area where the content of flammable vapors or gases is greater than twenty percent (20%) of the lower explosive limit.
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Amendment of subsection (a) and new Note filed 5-8-95; operative 6-7-95 (Register 95, No. 19).
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