{"data":{"id":"us/46-cfr-154.460","jurisdiction":"us","citation":"46 CFR 154.460","heading":"Design criteria.","body":"At static angles of heel up through 30°, a secondary barrier must\n(a) If a complete secondary barrier is required in § 154.459, hold all of the liquid cargo in the cargo tank for at least 15 days under the dynamic loads in § 154.409(e);\n(b) If a partial secondary barrier is permitted in § 154.459, hold any leakage of liquid cargo corresponding to the extent of failure under § 154.448(a) after initial detection or primary barrier leak for at least 15 days under the dynamic loads in § 154.409(e);\n(c) If the primary barrier fails, prevent the temperature of the vessel's structure from falling below the minimum allowable service temperature of the steel; and\n(d) Be designed so that a cargo tank failure does not cause a failure in the secondary barrier.","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":"f14084a5a7606d5548a0c0d2c5ed19de8a65c62e83cbd621622adadf09460b25","source_id":"us-cfr","stale":true,"prev":"us/46-cfr-154.459","next":"us/46-cfr-154.465"},"notice":"GroundRules: Original legal text. Not legal advice."}