§197.432. Surface-supplied air diving.
46 C.F.R. § 197.432
The diving supervisor shall insure that—
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;
Each diving operation has a primary breathing gas supply;
Each diver is continuously tended while in the water;
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;
For dives deeper than 130 fsw or outside the no-decompression limits—
Each diving operation has a secondary breathing gas supply;
A decompression chamber is ready for use at the dive location;
A diving stage is used except when a bell is provided;
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;
A separate dive team member tends each diver in the water;
A standby diver is available while a diver is in the water; and
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
The surface-supplied air diver has the equipment required by § 197.346 (b) or (d).
Notes, amendments, and revision history
Authority
Authority: 33 U.S.C. 1509; 43 U.S.C. 1333; 46 U.S.C. 3306, 3703, 6101; Department of Homeland Security Delegation No. 0170.1.
Source
Source: CGD 76-009, 43 FR 53683, Nov. 16, 1978, unless otherwise noted.