All equipment and manning levels referenced in Section 4 should be considered the recommended minimum for approaching this diving application, based on one dive and any applicable decompression required. Increased manning levels and additional equipment may be required for any diving in excess of one dive and any decompression required. Proper pre-job planning shall be conducted to ensure that the necessary levels of personnel and equipment are available for diving operations.
Scuba procedures should not be used for the conduct of commercial diving operations except where it can be shown to be more safe and efficient than the alternative modes of diving. The following are minimum requirements for self-contained diving operations.

Commercial scuba diving 0-100 fsw (0-30 msw) with no decompression:
• One diving supervisor.
• One Diver.
• One tender/diver who shall be properly equipped and capable of performing the duties of a standby diver. (When two divers are simultaneously in the water and can maintain visual contact, they can act as standby diver for each other.)
• At a minimum, at least one member of the dive team must have a recognized O₂ provider certification or be a DMT. If that member is a part of the dive rotation, then at least two members of the dive team must have a recognized O2 provider certification or be DMTs.

1. Two-way audio-communications between the diver and topside are required.
2. The planned time of a scuba diving operation shall not exceed either the no decompression limits or the air supply duration of the cylinders exclusive of the reserve supply. The cylinder pressure shall be determined immediately before each dive. Dive depths shall not exceed 100 fsw (30 msw).
3. Scuba dives shall not be conducted against currents exceeding one knot.
4. Scuba dives shall not be conducted in enclosed or physically-confining spaces.
5. During all scuba dives, a standby diver shall be available while a diver is in the water.
6. Scuba divers shall be line-tended from the surface, or accompanied by another diver in the water in continuous visual contact during the diving operations.

7. Diving on scuba will only be allowed during daylight hours.
8. All divers on scuba shall wear a buoyancy compensator and whistle or other audio signaling device.
9. During periods of low or poor surface visibility, the diver shall also carry a lighted beacon.
10. Scuba divers shall be equipped with a diver-carried EGS.
11. Scuba divers shall be equipped with a submersible pressure gauge (tank contents gauge).

1. Each diver shall be equipped with a knife, diving wristwatch and depth gauge.
2. Full face masks with through water communication to the surface (supervisor), with diver-to-diver communications a desirable option.
3. A weight belt with a quick release that is appropriate for the suit and depth of the dive shall be worn.
4. A buoyancy compensator device (BCD) should be used to secure the cylinders to the diver and provide underwater buoyancy compensation or surface buoyancy as needed. If a dry suit is being worn by the diver, then a cylinder harness with a quick release may be worn to secure the cylinders to the diver.
5. An emergency O₂ administration kit (readily available for the treatment of diver{s}).

Diver worn/carried emergency gas supply (bailout) must have a minimum calculated four-minute supply at the anticipated depth. Refer to Section 6: Diver Worn or Carried Emergency Gas Supply.

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