Helitrox Diluent Closed Circuit
Rebreather Diver Helitrox
Decompression Procedures Course

This is the second entry level certification course for divers wishing to utilize a closed circuit rebreather (CCR) for mixed gas diving using a Helitrox diluent. 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 of 45 metres / 150 feet, using an air/nitrox/helium diluent for formal decompression diving. Student are permitted to utilize a diluent and bailout mix with no greater than a 35% helium content (+/- 5%) and no less than a 21% oxygen content and are permitted to use up to 100% oxygen for decompression.

Student Prerequisites

1. Minimum age 18
2. Provide proof of 50 logged dives. If completing a unit crossover, provide proof of 10 logged CCR dives in the last 12 months.
3. Minimum certification level of TDI Advanced Nitrox Diver, Deco Procedures Diver or Helitrox 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 50m 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 45 metres / 150 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/helium analyzer
9. Appropriate weight
10. Bailout gas supply cylinder with appropriate capacity of gas for planned dive

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