[Code of Federal Regulations]
[Title 46, Volume 1]
[Revised as of Octobery 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR38.05-25]

[Page 491-492]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 38_LIQUEFIED FLAMMABLE GASES--Table of Contents
 
                  Subpart 38.05_Design and Installation
 
Sec. 38.05-25  Refrigerated systems--TB/ALL.

    (a) When a liquefied flammable gas is carried below atmospheric 
temperature

[[Page 492]]

under the requirements of Sec. 38.05-3(f) or Sec. 38.05-4, maintenance 
of the tank pressure below the maximum allowable pressure shall be 
provided by one or more of the following means:
    (1) A refrigeration or liquefication system which regulates the 
pressure in the tanks. A standby compressor or equivalent equipment, of 
a capacity equal to one of the working units shall be provided.
    (2) A system whereby the vapors are utilized as fuel for shipboard 
use.
    (3) A system allowing the liquefied flammable gas to warm up and 
increase in pressure. The insulation and tank design pressure shall be 
adequate to provide for a suitable margin for the operating time and 
temperatures involved.
    (4) Other systems acceptable to the Commandant.
    (b) A system whereby the vapors are vented to the atmosphere at sea 
only may be employed in conjunction with paragraph (a)(1) of this 
section. The pressure control valves shall be independent of the safety 
relief valves. See Sec. 38.20-1(j).