[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: 46CFR38.10-10]

[Page 494-495]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 38_LIQUEFIED FLAMMABLE GASES--Table of Contents
 
     Subpart 38.10_Piping, Valves, Fittings, and Accessory Equipment
 
Sec. 38.10-10  Cargo piping--TB/ALL.

    (a) The piping shall be designed for a working pressure of not less 
than the maximum pressure to which it may be subjected but in no case 
less than the design pressure of the cargo tanks. In the case of piping 
on the discharge side of the liquid pumps or vapor compressors, the 
design pressure shall not be less than the pump or compressor discharge 
relief valve setting; or, provided the piping is not protected by relief 
valves, the design pressure shall not be less than the total discharge 
head of the pump or compressor.
    (b) Piping subject to tank pressure shall be seamless drawn steel or 
electric resistance welded steel. Pipe used in refrigerated tank systems 
shall be of a material which is suitable for the minimum service 
temperature to which it may be subjected, according

[[Page 495]]

to the requirements of part 56 of subchapter F (Marine Engineering) of 
this chapter.
    (c) Piping shall be provided with adequate support to take the 
weight of the piping off valves and fittings and to prevent excessive 
vibration and stresses on tank connections.
    (d) For nonpressure vessel type tanks, the cargo handling 
arrangements and piping shall provide for emptying of a damaged tank, 
including cargo contained by a secondary barrier.

[CGFR 66-33, 31 FR 15269, Dec. 6, 1966, as amended by CGFR 68-82, 33 FR 
18807, Dec. 18, 1968]