---
kind: "section"
citation: "30 C.F.R. § 57.13021"
title: "30"
number: "57.13021"
heading: "High-pressure hose connections."
url: "https://uscodex.org/cfr/30/57.13021"
---

# §57.13021. High-pressure hose connections.


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.


## Notes

### Authority

Authority: 30 U.S.C. 811.

### Source

Source: 50 FR 4082, Jan. 29, 1985, unless otherwise noted.