[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: 46CFR197.432]

[Page 434]
 
                           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. 197.432  Surface-supplied air diving.

    The diving supervisor shall insure that--
    (a) Surface-supplied air diving is conducted at depths less than 190 
fsw, except that dives with bottom times of 30 minutes or less may be 
conducted to depths of 220 fsw;
    (b) Each diving operation has a primary breathing gas supply;
    (c) Each diver is continuously tended while in the water;
    (d) When a diver is in a physically confining space, another diver 
is stationed at the underwater point of entry and is line-tending the 
diver;
    (e) For dives deeper than 130 fsw or outside the no-decompression 
limits--
    (1) Each diving operation has a secondary breathing gas supply;
    (2) A decompression chamber is ready for use at the dive location;
    (3) A diving stage is used except when a bell is provided;
    (4) A bell is used for dives with an in-water decompression time 
greater than 120 minutes, except when the diver is using a heavy-weight 
diving outfit or is diving in a physically confining space;
    (5) A separate dive team member tends each diver in the water;
    (6) A standby diver is available while a diver is in the water; and
    (7) Each diver has a diver-carried reserve breathing gas supply 
except when using a heavy-weight diving outfit or when diving in a 
physically confining space; and
    (f) The surface-supplied air diver has the equipment required by 
Sec. 197.346 (b) or (d).