---
kind: "section"
citation: "46 C.F.R. § 181.420"
title: "46"
number: "181.420"
heading: "Pre-engineered fixed gas fire extinguishing systems."
url: "https://uscodex.org/cfr/46/181.420"
---

# §181.420. Pre-engineered fixed gas fire extinguishing systems.

- (a) **A pre-engineered fixed gas fire extinguishing system must—**
  - (1) Be approved by the Commandant;
  - (2) Be capable of manual actuation from outside the space in addition to automatic actuation by a heat detector;
  - (3) Automatically shut down all power ventilation systems and all engines that draw intake air from within the protected space; and
  - (4) **Be installed in accordance with the manufacturer's instructions.**
- (b) A vessel on which a pre-engineered fixed gas fire extinguishing system is installed must have the following equipment at the operating station:
  - (1) A light to indicate discharge;
  - (2) An audible alarm that sounds upon discharge; and
  - (3) A means to reset devices used to automatically shut down ventilation systems and engines as required by [paragraph (a)(3)](#a-3) of this section.
- (c) Only one pre-engineered fixed gas fire extinguishing system is allowed to be installed in each space protected by such a system.

## Notes

### Authority

Authority: 46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; DHS Delegation 00170.1, Revision No. 01.4.

### Source

Source: CGD 85-080, 61 FR 982, Jan. 10, 1996, unless otherwise noted.