StacksVerified U.S. regulatory reference

46 CFR §154.1010

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
  1. (a)Except as allowed in this section, electrical equipment must not be installed in a gas-dangerous space or zone.
  2. (b)Intrinsically safe electrical equipment and wiring may be in a gas-dangerous space or zone.
  3. (c)A submerged cargo pump motor may be in a cargo tank if:
    1. (1)Low liquid level, motor current, or pump discharge pressure automatically shuts down power to the pump motor if the pump loses suction;
    2. (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) of this section; and
    3. (3)There is a lockable circuit breaker or lockable switch that disconnects the power to the motor.
  4. (d)A supply cable for a submerged cargo pump motor may be in a hold space.
  5. (e)A hold space that has a tank that is not required to have a secondary barrier under § 154.459 may only have:
    1. (1)Through runs of cable;
    2. (2)Explosion-proof lighting fixtures;
    3. (3)Depth sounding devices in gas-tight enclosures;
    4. (4)Log devices in gas-tight enclosures; and
    5. (5)Impressed current cathodic protection system electrodes in gas-tight enclosures.
  6. (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, may only have:
    1. (1)Through runs of cable;
    2. (2)Explosion-proof lighting fixtures;
    3. (3)Depth sounding devices in gastight enclosures;
    4. (4)Log devices in gastight enclosures;
    5. (5)Impressed current cathodic protection system electrodes in gastight enclosures;
    6. (6)Explosion-proof motors that operate cargo system valves or ballast system valves; and
    7. (7)Explosion-proof bells for general alarm systems.
  7. (g)A cargo handling room may only have:
    1. (1)Explosion-proof lighting fixtures; and
    2. (2)Explosion-proof bells for general alarm systems.
  8. (h)A space for cargo hose storage may only have:
    1. (1)Explosion-proof lighting fixtures; and
    2. (2)Through runs of cable.
      1. (i)A space that has cargo piping may only have:
        1. (1)Explosion-proof lighting fixtures; and
        2. (2)Through runs of cable.
  9. (j)A gas-dangerous zone on the weather deck may only have:
    1. (1)Explosion-proof equipment that is for the operation of the vessel; and
    2. (2)Through runs of cable.
  10. (k)A space, except those under paragraphs (e) through (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.