CFR > Title 46 - Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER O—CERTAIN BULK DANGEROUS CARGOES (parts 150 to 155) > PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES > SUBPART C—Design, Construction and Equipment (§154.170 to §154.1440) > 154.174—Transverse contiguous hull structure.

154.174—Transverse contiguous hull structure.

(a) The transverse contiguous hull structure of a vessel having cargo containment systems without secondary barriers must meet the standards of the American Bureau of Shipping published in “Rules for Building and Classing Steel Vessels”, 1981.
(b) The transverse contiguous hull structure of a vessel having cargo containment systems with secondary barriers must be designed for a temperature that is:
(1) Colder than the calculated temperature of this hull structure when:
(i) The temperature of the secondary barrier is the design temperature, and
(ii) The ambient cold condition under § 154.176(b)(1)(ii) and (iii) are assumed; or
(2) Maintained by the heating system under § 154.178.
[CGD 74-289, 44 FR 26009, May 3, 1979, as amended by CGD 77-069, 52 FR 31630, Aug. 21, 1987]