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(a) Iron sulfide, during and after removal from the inside of tanks and equipment, shall be kept wet or otherwise protected against ignition until removed to a safe place.
(b) Where lime is used inside a vessel to dehydrate the oil or gas, steel wool shall not be used as a porous medium to hold the lime in place.
NOTE: When a dehydrator is opened for cleaning, the lime and iron sulfide, which is formed in the steel wool, may react with atmospheric air and ignite vapors that may be present. Mineral wool may be used in place of steel wool.
NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
1. Amendment of subsection (a) and NOTE and new Authority and Reference filed 9-6-94; operative 10-6-94 (Register 94, No. 36).