{"data":{"id":"us/46-cfr-111.105-32","jurisdiction":"us","citation":"46 CFR 111.105-32","heading":"-32 Bulk liquefied flammable gas and ammonia carriers.","body":"(a) Each vessel that carries bulk liquefied flammable gases or ammonia as a cargo, cargo residue, or vapor must meet the requirements of this section.\n(b) As used in this section:\n(1) The terms “gas-safe” and “gas-dangerous” spaces are used as defined in § 154.7 of this chapter.\n(2) The term “gas-dangerous” does not include the weather deck of an ammonia carrier.\n(c) Each submerged cargo pump motor design must receive concept approval by the Commandant (CG-ENG) and its installation must receive plan approval by the Commanding Officer, Marine Safety Center.\n(d) Electrical equipment must not be installed in a gas-dangerous space or zone, except:\n(1) Intrinsically safe electrical equipment and wiring, and\n(2) Other equipment as allowed in this section.\n(e) A submerged cargo pump motor, if installed in a cargo tank, must meet § 111.105-31(d).\n(f) Electrical equipment must not be installed in a hold space that has a tank that is not required to have a secondary barrier under § 154.459 of this chapter, except:\n(1) Through runs of marine shipboard cable;\n(2) Explosionproof 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; and\n(6) Armored or MI type cable for a submerged cargo pump motor.\n(g) Electrical equipment must not be installed in a space that is separated by a gastight steel boundary from a hold space that has a tank that must have a secondary barrier under the requirements of § 154.459 of this chapter, except:\n(1) Through runs of marine shipboard cable;\n(2) Explosionproof 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) Explosionproof motors that operate cargo system valves or ballast system valves;\n(7) Explosionproof bells for general alarm systems; and\n(8) Armored or MI type cable for a submerged cargo pump motor.\n(h) A cargo-handling room must not have any installed electrical equipment, except explosionproof lighting fixtures.\n(i) A space for cargo hose storage or a space that has cargo piping must not have any installed electrical equipment, except:\n(1) Explosionproof lighting fixtures; and\n(2) Through runs of marine shipboard cable.\n(j) A gas dangerous zone on the open deck must not have any installed electrical equipment, except:\n(1) Explosionproof equipment that is necessary for the operation of the vessel; and\n(2) Through runs of marine shipboard cable.\n(k) A space, except those named in paragraphs (f) through (i) of this section, that has a direct opening to gas-dangerous spaces or zones must have no electrical equipment except as allowed in the gas-dangerous space or zone.\n(l) Each gas-dangerous space that has lighting fixtures must have at least two branch circuits for lighting.\n(m) Each switch and each overcurrent protective device for any lighting circuit that is in a gas-dangerous space must open all conductors of the circuit simultaneously.\n(n) Each switch and each overcurrent protective device for lighting in a gas-dangerous space must be in a gas-safe space.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER J—ELECTRICAL ENGINEERING","PART 111—ELECTRIC SYSTEMS—GENERAL REQUIREMENTS","Subpart 111.105—Hazardous Locations"],"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":"07e2964ac262c1883a6ed02f8f74e04b503da80ee1bc36457305550b350a0937","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-111.105-31","next":"us/46-cfr-111.105-33"},"notice":"GroundRules: Original legal text. Not legal advice."}