---
kind: "section"
citation: "46 C.F.R. § 181.120"
title: "46"
number: "181.120"
heading: "Equipment installed but not required."
url: "https://uscodex.org/cfr/46/181.120"
---

# §181.120. Equipment installed but not required.

- (a) Fire extinguishing equipment installed on a vessel in excess of the requirements of §§ [181.400](/cfr/46/181.400.md) and [181.500](/cfr/46/181.500.md) must be designed, constructed, installed, and maintained in accordance with a recognized industry standard acceptable to the Commandant (CG-ENG-4).
- (b) Use of non-approved fire detection systems may be acceptable as excess equipment provided that—
  - (1) Components are listed by an independent, nationally recognized testing laboratory as set forth in [29 CFR 1910.7](/cfr/29/1910.7.md), and are designed, installed, tested, and maintained in accordance with an appropriate industry standard and the manufacturer's specific guidance;
  - (2) Installation conforms to the requirements of [46 CFR chapter I](/cfr/46/chI.md), subchapter J (Electrical Engineering), especially the hazardous location electrical installation regulations in [46 CFR 111.105](/cfr/46/111.105.md); and
  - (3) **Coast Guard plan review is completed for wiring plans.**

## Notes

### Amendments

[USCG-2012-0196, 81 FR 48299, July 22, 2016]

### 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.

### Amendments

[USCG-2012-0196, 81 FR 48299, July 22, 2016]