§56.4604. Preparation of pipelines or containers.
30 C.F.R. § 56.4604
Before welding, cutting, or applying heat with an open flame to pipelines or containers that have contained flammable or combustible liquids, flammable gases, or explosive solids, the pipelines or containers shall be—
Drained, ventilated, and thoroughly cleaned of any residue;
Vented to prevent pressure build-up during the application of heat; and
Filled with an inert gas or water, where compatible; or
Determined to be free of flammable gases by a flammable gas detection device prior to and at frequent intervals during the application of heat.
Notes, amendments, and revision history
Authority
Authority: Sec. 101, Federal Mine Safety and Health Act of 1977, Pub. L. 91-173, as amended by Pub. L. 95-164, 91 Stat. 1291 (30 U.S.C. 811).
Authority
Authority: 30 U.S.C. 811.
Source
Source: 50 FR 4054, Jan. 29, 1985, unless otherwise noted.