30 C.F.R. § 57.13021
Current through September 30, 2024
Except where automatic shutoff valves are used, safety chains or other suitable locking devices shall be used at connections to machines of high-pressure hose lines of 3/4 -inch inside diameter or larger, and between high-pressure hose lines of 3/4 -inch inside diameter or larger, where a connection failure would create a hazard.
30 C.F.R. §57.13021