Necessary repairs in an explosives building shall be attended to by a repairs engineer or other authorized person. The foreman or person in charge of the building shall be responsible for seeing that only authorized persons perform such repairs, and that in the case of major repairs all explosive material is removed before repairs are undertaken. After repairs are made, all articles, other than those allowed, shall be removed from the building, and the workroom placed in its original working condition, before work may be resumed.
34 Pa. Code § 5.115