Advanced Trimix Diver

Advanced Trimix Diver

The TDI Advanced Trimix course provides the training required to competently and safely utilize breathing gases containing helium for dives that require staged decompression, utilizing nitrox and / or oxygen (O2
11.2 Qualifications of Graduates ) mixtures during decompression to a maximum depth of 100 metres / 330 feet. The objective of this course is to train divers in the benefits, hazards and proper procedures of utilizing custom oxygen / helium / nitrogen mixtures as breathing gases.

 

  1. Minimum age of 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/ dual cylinders
TDI Advanced Trimix Diver Manual
The TDI Advanced Trimix Diver course requires a minimum of 4 dives conducted over a minimum of 4 days. The first day will be spent in the classroom discussing dive planning and procedures and will include time for equipment configuration and exam review.  The following days will be spent in the water conducting dives which are appropriate to the diver’s experience and training level.
  1. Mask and fins
  2. Backup mask recommended
  3. Exposure protection (dry suit and undergarment or 7mm wet suit)
  4. Dual primary cylinders (sidemount or backmount)
  5. Two first and second stage regulators
  6. One SPG for backmount or two SPGs for sidemount
  7. 7′ long hose
  8. Two decompression cylinders (minimum 40 cf)
  9. Two first and second stage regulators with SPGs for deco cylinders
  10. BCD inflator hose and/or dry suit inflator hose
  11. Buoyancy Compensating Device (BCD)
  12. Two depth and timing devices
  13. Two cutting devices
  14. One primary light
  15. Two backup lights
  16. Primary reel with a minimum of 400 ft of line
  17. Lift bag/surface marker buoy (minimum of 25lbs lift)
  18. Waterproof notebook and underwater slate
  19. Oxygen and helium analyzer, recommended