---
kind: "range"
citation: "46 C.F.R. §§ 154.1005–154.1020"
title: "46"
from: "154.1005"
to: "154.1020"
count: 4
url: "https://uscodex.org/cfr/46/154.1005..154.1020"
---

# §154.1005. Equipment approval.

- (a) Electrical equipment that is required to be intrinsically safe or explosion proof under [§ 154.1010](/cfr/46/154.1010.md) must be specially approved by the Commandant or listed as intrinsically safe or explosion proof by an independent laboratory that is specially approved by the Commandant (CG-OES), for Class I Division I locations and the Group that is specified in Table 4 for the cargo carried.
- (b) Each submerged cargo pump motor installation must be specially approved by the Commandant (CG-OES).
- (c) Electrical equipment that must be intrinsically safe to meet [§ 154.1010](/cfr/46/154.1010.md) must meet the definition in [§ 110.15-100(i)](/cfr/46/110.15-100.md?p=i) of this chapter.
- (d) Electrical equipment that must be explosion proof to meet [§ 154.1010](/cfr/46/154.1010.md) must meet [§ 110.15-65(e)](/cfr/46/110.15-65.md?p=e) of this chapter.

# §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.

# §154.1015. Lighting in gas-dangerous space.

- (a) Each gas-dangerous space that has lighting fixtures must have at least two branch circuits for lighting.
- (b) Each switch and each overcurrent protective device for any lighting circuit that is in a gas-dangerous space must open each conductor of the circuit simultaneously.
- (c) Each switch and each overcurrent protective device for lighting in a gas-dangerous space must be in a gas-safe space.

# §154.1020. Emergency power.


The emergency generator must be designed to allow operation at the final angle of heel under [§ 154.230(a)](/cfr/46/154.230.md?p=a).