[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR197.310]

[Page 426]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 197--GENERAL PROVISIONS--Table of Contents
 
                 Subpart B--Commercial Diving Operations
 
Sec. 197.310  Air compressor system.

    A compressor used to supply breathing air to a diver must have--
    (a) A volume tank that is--
    (1) Built and stamped in accordance with section VIII, division 1 of 
the ASME Code with--
    (i) A check valve on the inlet side;
    (ii) A pressure gage;
    (iii) A relief valve; and
    (iv) A drain valve; and
    (2) Tested after every repair, modification, or alteration to the 
pressure boundaries as required by Sec. 197.462;
    (b) Intakes that are located away from areas containing exhaust 
fumes of internal combustion engines or other hazardous contaminants;
    (c) An efficient filtration system; and
    (d) Slow-opening shut-off valves when the maximum allowable working 
pressure of the system exceeds 500 psig.