{"data":{"id":"us/46-cfr-153.525","jurisdiction":"us","citation":"46 CFR 153.525","heading":"Special requirements for unusually toxic cargoes.","body":"When Table 1 refers to this section a containment system must meet the following:\n(a) Cargo piping and venting systems must be designed so that they can be separated from any containment system endorsed for a cargo not covered by this section.\n(b) A cargo tank's relief valve setting must be not less than 21 kPa gauge (approx. 3 psig).\n(c) All cargo pumps and valves located below the weatherdeck must be operable from the weatherdeck.\n(d) A heat transfer system for the cargo must:\n(1) Be independent of other ship service systems, except for other cargo heat transfer systems, and not enter the engine room;\n(2) Be totally external to the cargo containment system; or\n(3) Be approved by the Commandant (CG-ENG) for use with toxic cargoes.\n(e) The cargo must be separated from any bunkers by at least two bulkheads.\n(f) A cargo containment system must have a vapor return connection.","path":["Title 46—Shipping","CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY","SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES","PART 153—SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS","Subpart B—Design 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":"c2e799aae69ea13b29d2e1e44baf31f0495f9c6a592ae169382a2973138329dd","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-153.520","next":"us/46-cfr-153.526"},"notice":"GroundRules: Original legal text. Not legal advice."}