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§ 1915.54 Welding, cutting and heating of hollow metal containers and structures not covered by § 1915.12.
The provisions of this section shall apply to ship repairing, shipbuilding and shipbreaking.
(a) Drums, containers, or hollow structures which have contained flammable substances shall, before welding, cutting, or heating is undertaken on them, either be filled with water or thoroughly cleaned of such substances and ventilated and tested.