Certain types of diving, some of which are listed below, require equipment or procedures which require training. Supplementary guidelines for these technologies are idevelopment by the AAUS. Campuses using these, must have guidelines established by their Diving Control Board. Divers shall comply with all scuba diving procedures in this manual unless specified.
No diver shall plan or conduct staged decompression dives without prior approval of the Diving Control Board.
7.20 SATURATION DIVING
If using open circuit compressed air scuba in saturation diving operations, divers shall comply with the campus’ saturation diving guidelines.
7.30.1 Divers using the hookah mode shall be equipped with a diver-carried independent reserve breathing gas supply.
7.30.2 Each hookah diver shall be hose-tended by a separate dive team member while in the water.
7.30.3 The hookah breathing gas supply shall be sufficient to support all hookah divers in the water for the duration of the planned dive, including decompression.
Surface supplied divers shall comply with all scuba diving procedures in this manual (except Section 2.31). Surface supplied diving shall not be conducted at depths greater than 190 fsw (58 msw).
7.40.1 Divers using the surface supplied mode shall be equipped with a diver-carried independent reserve breathing gas supply.
7.40.2 Each surface supplied diver shall be hose tended by a separate dive team member while in the water.
7.40.3 Divers using the surface supplied mode shall maintain voice communication with the surface tender.
7.40.4 The surface supplied breathing gas supply shall be sufficient to support all surface supplied divers in the water for the duration of the planned dive, including decompression.
7.40.5 During surface supplied diving operations when only one diver is in the water, there must be a standby diver in attendance at the dive location.
Closed and semi-closed circuit scuba (rebreathers) shall meet the following requirements:
7.51.1 Oxygen partial pressure in the breathing gas shall not exceed values approved by the organizational member’s Diving Control Board. The generally accepted maximum value is 1.5 atmospheres ppO2 at depths greater than 25 fsw (7.6 msw).
7.51.2 Chemicals used for the absorption of carbon dioxide shall be kept in a cool, dry location in a sealed container until required for use.
7.51.3 The designated person-in-charge shall determine that the carbon dioxide absorption canister is used in accordance with the manufacturer’s instructions.
7.51.4 Closed and semi-closed diving equipment will not be used at a depth greater than that recommended by the manufacturer of the equipment.
7.60.1 Nitrox diving
Divers planning to use enriched air (Nitrox) scuba diving must use the following guidelines which are available through AAUS: “Guidelines for Scientific Nitrox Diving and Nitrox Diver Certification”, American Academy of Underwater Sciences, 1991.
Blue water diving is defined as diving in open water where the bottom is generally >200 feet deep. It requires special training and the use of multiple-tethered diving techniques. Specific guidelines that should be followed are outlined in “Blue Water Diving Guidelines” (California Sea Grant Publ. No. T-CSGCP-014).
Divers planning to dive under ice or in polar conditions should use the following: “Guidelines for Conduct of Research Diving”, National Science Foundation, Division of Polar Programs, 1990.
Where an enclosed or confined space is not large enough for two divers, a diver shall be stationed at the underwater point of entry and an orientation line shall be used.