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(a) Before opening lines or other equipment the pressure shall be reduced to atmospheric or as near atmospheric as is practical. Employees shall be informed of the hazards due to the contents of lines or equipment and instructed as to the necessary precautions to be taken.
(b) Lines and equipment containing flammable liquids shall be emptied of their contents, washed out, or steamed before being opened, as is practical.
(c) Precautions shall be taken to prevent ignition by eliminating or controlling sources of ignition before opening lines or equipment where flammable liquids or vapors may be present.
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Originally published 7-15-46 (Register 4).
2. Amendment filed 1-20-48 (Register 11, No. 3).
3. Repealer of opening NOTE, amendment of subsections (a)-(b), repealer and new subsection (c), repealer of subsections (d)-(e) and new NOTE filed 9-6-94; operative 10-6-94 (Register 94, No. 36).
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