[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: 46CFR98.25-35]



[Page 82-83]

 

                            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.  98.25-35  Refrigerated systems.



    (a) Where refrigerated systems are installed to maintain the 

temperature of the liquid below atmospheric, at least two complete 

refrigeration plants automatically regulated by pressure variations 

within the tanks shall be provided, each to be complete with the 

necessary auxiliaries for proper operation. The capacity of each 

refrigeration compressor shall be sufficient to maintain the vapor 

pressure in the



[[Page 83]]



tanks during the peak atmospheric temperature conditions below the 

pressure for which the tanks are designed.

    (b) An alternate arrangement may consist of three compressors, any 

two of which shall be capable of maintaining the vapor pressure in the 

tanks during peak atmospheric temperature conditions below the pressure 

for which the tanks are designed, the third compressor acting as a 

stand-by unit.

    (c) Refrigerated tanks shall be insulated in conformance with the 

requirements of Sec.  98.25-30.