[Code of Federal Regulations]

[Title 46, Volume 4]

[Revised as of October 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 46CFR98.25-55]



[Page 84]

 

                            TITLE 46_SHIPPING



                  (This book contains parts 90 to 139)

 

   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)

 

PART 98_SPECIAL CONSTRUCTION, ARRANGEMENT, AND OTHER PROVISIONS FOR 

CERTAIN DANGEROUS CARGOES IN BULK--Table of Contents

 

                 Subpart 98.25_Anhydrous Ammonia in Bulk

 

Sec.  98.25-55  Cargo piping.



    (a) Piping shall be of seamless steel meeting the requirements of 

Sec.  56.60-1 of subchapter F (Marine Engineering) of this chapter. The 

piping shall be of not less than Schedule 40 thickness. In case of 

piping on the discharge side of the liquid pumps or vapor compressors, 

the design shall be for a pressure of not less than the pump or 

compressor relief valve setting; or if the piping is not fitted with 

relief valves, the design pressure shall not be less than the total 

discharge head of the pump or compressor.

    (b) Where necessary, provision shall be made for expansion and 

contraction of piping by means of seamless steel pipe expansion bends. 

Special consideration will be given for packless type expansion joints. 

Slip type expansion joints are prohibited. Piping shall be provided with 

adequate support to take the weight of the piping off the valves and 

fittings.



[CGFR 65-50, 30 FR 17022, Dec. 30, 1965, as amended by CGFR 68-82, 33 FR 

18902, Dec. 18, 1968]