---
kind: "section"
citation: "46 C.F.R. § 154.1010"
title: "46"
number: "154.1010"
heading: "Electrical equipment in gas-dangerous space or zone."
url: "https://uscodex.org/cfr/46/154.1010"
---

# §154.1010. Electrical equipment in gas-dangerous space or zone.

- (a) Except as allowed in this section, electrical equipment must not be installed in a gas-dangerous space or zone.
- (b) Intrinsically safe electrical equipment and wiring may be in a gas-dangerous space or zone.
- (c) A submerged cargo pump motor may be in a cargo tank if:
  - (1) Low liquid level, motor current, or pump discharge pressure automatically shuts down power to the pump motor if the pump loses suction;
  - (2) There is an audible and visual alarm at the cargo control station that actuates if the motor shuts down under the requirements of [paragraph (c)(1)](#c-1) of this section; and
  - (3) **There is a lockable circuit breaker or lockable switch that disconnects the power to the motor.**
- (d) A supply cable for a submerged cargo pump motor may be in a hold space.
- (e) A hold space that has a tank that is not required to have a secondary barrier under [§ 154.459](/cfr/46/154.459.md) may only have:
  - (1) Through runs of cable;
  - (2) Explosion-proof lighting fixtures;
  - (3) Depth sounding devices in gas-tight enclosures;
  - (4) Log devices in gas-tight enclosures; and
  - (5) **Impressed current cathodic protection system electrodes in gas-tight enclosures.**
- (f) A space that is separated by a gastight steel boundary from a hold space that has a cargo tank that must have a secondary barrier, under the requirements of [§ 154.459](/cfr/46/154.459.md), may only have:
  - (1) Through runs of cable;
  - (2) Explosion-proof lighting fixtures;
  - (3) Depth sounding devices in gastight enclosures;
  - (4) Log devices in gastight enclosures;
  - (5) Impressed current cathodic protection system electrodes in gastight enclosures;
  - (6) Explosion-proof motors that operate cargo system valves or ballast system valves; and
  - (7) **Explosion-proof bells for general alarm systems.**
- (g) A cargo handling room may only have:
  - (1) Explosion-proof lighting fixtures; and
  - (2) **Explosion-proof bells for general alarm systems.**
- (h) A space for cargo hose storage may only have:
  - (1) Explosion-proof lighting fixtures; and
  - (2) **Through runs of cable.**
- (i) A space that has cargo piping may only have:
  - (1) Explosion-proof lighting fixtures; and
  - (2) **Through runs of cable.**
- (j) A gas-dangerous zone on the weather deck may only have:
  - (1) Explosion-proof equipment that is for the operation of the vessel; and
  - (2) **Through runs of cable.**
- (k) A space, except those under [paragraphs (e) through (j)](#e..j) of this section, that has a direct opening to a gas-dangerous space or zone may only have the electrical equipment allowed in the gas-dangerous space or zone.

## Notes

### 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.