Air Diluent Closed Circuit Rebreather
Decompression Procedures Diver

This is the second level certification course for divers wishing to utilize a closed circuit rebreather (CCR) for air diving. The objective of the course is to train divers in the benefits, hazards and proper procedures for diving a CCR and to develop basic CCR diving skills to a maximum depth of 40 metres / 130 feet using an air diluent for formal decompression diving.

Student Prerequisites

1. Minimum age 18
2. Provide proof of 50 logged dives. If completing a unit crossover, at least 10 logged CCR dives in the last 12 months.
3. Provide proof of TDI Advanced Nitrox Diver and Deco Procedures Diver or equivalent from agencies recognized by TDI
4. TDI Air Diluent CCR Diver certified or equivalent,
5. Minimum of 30 hours and 30 dives on the CCR unit.
6. Six months CCR diving experience

Course Structure and Duration

Confined Water Execution
1. Minimum of 60 minutes confined water training to a maximum of 9 metres / 30 feet
Open Water Execution
1. Equipment configuration session, confined water session, and 50 metre fully-equipped CCR diver surface tow must be completed prior to open water training dives
2. Minimum of 420 minutes open water training, to be completed over a minimum of 7 dives with a gradual increase in depth each day to a maximum of 40 metres / 130 feet

Required Equipment

The following equipment is required:
1. A complete closed circuit rebreather . Any modifications to the unit must be approved by the manufacturer
2. Minimum of 1 CCR dive computer and 1 backup OC/CCR computer for bailout in event of system failure
3. Mask, fins and a suitable line-cutting device
4. Slate and pencil
5. Reel with a minimum of 50 metres / 165 feet of line
6. Lift bag / delayed surface marker buoy (DSMB) with adequate lift and size for the dive environmentand a backup. Required for open water environments only.
7. Exposure suit appropriate for the open water environment where training will be conducted
8. Access to an oxygen analyzer
9. Appropriate weight
10. Bailout gas supply cylinder with a minimum capacity of 5.7 litres / 40 cu ft air or nitrox may be used

Price: $1500 Not included is gear hire, gas fills, diluent, food, lodging, dive site fees & transportation.