{"data":{"id":"us/46-cfr-154.1010","jurisdiction":"us","citation":"46 CFR 154.1010","heading":"Electrical equipment in gas-dangerous space or zone.","body":"(a) Except as allowed in this section, electrical equipment must not be installed in a gas-dangerous space or zone.\n(b) Intrinsically safe electrical equipment and wiring may be in a gas-dangerous space or zone.\n(c) A submerged cargo pump motor may be in a cargo tank if:\n(1) Low liquid level, motor current, or pump discharge pressure automatically shuts down power to the pump motor if the pump loses suction;\n(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\n(3) There is a lockable circuit breaker or lockable switch that disconnects the power to the motor.\n(d) A supply cable for a submerged cargo pump motor may be in a hold space.\n(e) A hold space that has a tank that is not required to have a secondary barrier under § 154.459 may only have:\n(1) Through runs of cable;\n(2) Explosion-proof lighting fixtures;\n(3) Depth sounding devices in gas-tight enclosures;\n(4) Log devices in gas-tight enclosures; and\n(5) Impressed current cathodic protection system electrodes in gas-tight enclosures.\n(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:\n(1) Through runs of cable;\n(2) Explosion-proof lighting fixtures;\n(3) Depth sounding devices in gastight enclosures;\n(4) Log devices in gastight enclosures;\n(5) Impressed current cathodic protection system electrodes in gastight enclosures;\n(6) Explosion-proof motors that operate cargo system valves or ballast system valves; and\n(7) Explosion-proof bells for general alarm systems.\n(g) A cargo handling room may only have:\n(1) Explosion-proof lighting fixtures; and\n(2) Explosion-proof bells for general alarm systems.\n(h) A space for cargo hose storage may only have:\n(1) Explosion-proof lighting fixtures; and\n(2) Through runs of cable.\n(i) A space that has cargo piping may only have:\n(1) Explosion-proof lighting fixtures; and\n(2) Through runs of cable.\n(j) A gas-dangerous zone on the weather deck may only have:\n(1) Explosion-proof equipment that is for the operation of the vessel; and\n(2) Through runs of cable.\n(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.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES","PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES","Subpart C—Design, Construction and Equipment"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-46.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:22Z","sha256":"5b5387c216f63a97777e981e4efbb855f0ecc0530d0d59eb42f4b9e7cb77a522","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-154.1005","next":"us/46-cfr-154.1015"},"notice":"GroundRules: Original legal text. Not legal advice."}