Advanced Trimix

The TDI Advanced Trimix Diver course is the top level of training for open circuit divers wishing to dive to depths as deep as 100 m / 330 feet utilizing hypoxic levels of oxygen (below 17 percent).  This course is perhaps one of the most informative and challenging and upon completion you are among some of the most elite divers.
 
Your TDI Instructor Larry Babcock will teach you 
Equipment management
Multiple stage cylinder labeling and placement
Complex decompression planning and contingency planning
Dive team awareness and communication
Gas monitoring and management
Use of travel gasses


Open Water Execution 

1. Four dives with a minimum accumulated bottom time of 100 minutes 

2. At least 2 dives should be deeper than 70 metres / 230 feet 

Required Equipment 

The following equipment is required for each student: 

1. Bottom mix cylinder(s) 

a. Cylinder volume appropriate for planned dive and student gas consumption 

b. Dual outlet valve, double manifold or independent doubles 

c. Labeled in accordance with TDI Standards 

2. Travel mix cylinder(s) 

a. Cylinder volume appropriate for planned dive and student gas consumption 

b. Labeled in accordance with TDI Standards 

3. Decompression mix cylinder(s) 

a. Cylinder volume appropriate for planned dive and student gas consumption 

b. Labeled in accordance with TDI Standards 

4. Suit inflation cylinder, required for dry suit divers only 

5. Regulators 

a. Primary and primary redundant required on all bottom mix cylinder(s) 

b. Submersible pressure gauges are required on all primary bottom mix cylinders 

c. A contingency use long hose second stage should be designated and appropriately rigged to facilitate air sharing at depth if necessary 

d. It is strongly recommended that all 4 required regulators be all DIN or all 4 yoke 

6. Buoyancy compensator device(s) (BCD) adequate for equipment configuration 

7. Redundant depth and timing devices; air decompression computers allowed for use as depth and timing devices 

8. Redundant light system if required by site 

9. Ascent reel with lift bag/surface marker buoy 

a. Adequate for maximum planned depth 

b. Minimum of 23 kg / 50 lb lift bag; a dump valve highly recommended 

10. Exposure suit adequate for the open water environment 

11. Line cutting device 

12. Underwater slate, for decompression / contingency tables 

13. Helium analyzer, recommended 

Student Prerequisites 

1. Minimum age 18 

2. Minimum certification TDI Extended Range Diver or Entry Level Trimix Diver, or equivalent 

3. Provide proof of a minimum 100 logged dives with 25 deeper than 30 metres / 100 feet 

4. Provide proof of prior logged experience w/ double cylinders and any other unfamiliar equipment such as dry suit


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