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

154.405 - Design vapor pressure (Po) of a cargo tank.

  (a) The design vapor pressure (Po) of a cargo tank must be equal to or greater than the MARVS.

  (b) The Po of a cargo tank must be equal to or greater than the vapor pressure of the cargo at 45 C (113 F) if: (1) The cargo tank has no temperature control for the cargo; and (2) The vapor pressure of the cargo results solely from ambient temperature.

  (c) The Po of a cargo tank may be exceeded under harbor conditions if specially approved by the Commandant (G-MSO).

[CGD 74289, 44 FR 26009, May 3, 1979, as amended by CGD 82063b, 48 FR 4782, Feb. 3, 1983]