Defective hose or hose in doubtful condition shall not be used.(e) Hose couplings shall be of the type that cannot be unlocked or disconnected by means of a straight pull without rotary motion.(f) Boxes used for the stowage of gas hose shall be ventilated.(7) Torches.(a) Clogged torch tip openings shall be cleaned with suitable cleaning wires, drills or other devices designed for such purpose.(b)