46 C.F.R. § 154.405 Design vapor pressure (Po) of a cargo tank.
Title 46 - Shipping
(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 74–289, 44 FR 26009, May 3, 1979, as amended by CGD 82–063b, 48 FR 4782, Feb. 3, 1983]
Title 46: Shipping
PART 154—SAFETY STANDARDS FOR SELF-PROPELLED VESSELS CARRYING BULK LIQUEFIED GASES
Subpart C—Design, Construction and Equipment
Cargo Containment Systems
§ 154.405 Design vapor pressure (Po) of a cargo tank.
