30 CFR 57.6802 - Bulk delivery vehicles.
No welding or cutting shall be performed on a bulk delivery vehicle until the vehicle has been washed down and all explosive material has been removed. Before welding or cutting on a hollow shaft, the shaft shall be thoroughly cleaned inside and out and vented with a minimum 1/2-inch diameter opening to allow for sufficient ventilation.
Title 30 published on 2014-07-01
no entries appear in the Federal Register after this date.