---
kind: "section"
citation: "46 C.F.R. § 154.519"
title: "46"
number: "154.519"
heading: "Piping relief valves."
url: "https://uscodex.org/cfr/46/154.519"
---

# §154.519. Piping relief valves.

- (a) The liquid relief valve that protects the cargo piping system from liquid pressure exceeding the design pressure must discharge into:
  - (1) A cargo tank; or
  - (2) A cargo vent mast if that vent mast has a means for the detection and removal of the liquid cargo that is specially approved by the Commandant (CG-ENG).
- (b) A relief valve on a cargo pump that protects the cargo piping system must discharge into the pump suction.

## Notes

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]

### Authority

Authority: 46 U.S.C. 3703, 9101; Department of Homeland Security Delegation No. 0170.1.

### Source

Source: CGD 74-289, 44 FR 26009, May 3, 1979, unless otherwise noted.

### Amendments

[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 82-063b, 48 FR 4782, Feb. 3, 1983]