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) mixtures during decompression to a maximum depth of 100 metres / 330 feet. The objective of the TDI Advanced Trimix course is to train divers in the benefits, hazards and proper procedures of utilizing custom oxygen / helium / nitrogen mixtures as breathing gases.
Qualifications of Graduates
Upon successful completion of this course, graduates may engage in technical diving activities utilizing custom trimix mixtures without direct supervision provided:
- The diving activities approximate those of training
- The area of activities approximates those of training
- Environmental conditions approximate those of training
Open Water Execution
- Four dives with a minimum accumulated bottom time of 100 minutes
- At least 2 dives should be deeper than 70 metres / 230 feet
Course Structure
- TDI allows instructors to structure courses according to the number of students participating and their skill level
Duration
- The minimum number of classroom and briefing hours is 8.
Course prerequisites:
- Minimum age 18
- Minimum certification of TDI Extended Range or Trimix Diver or equivalent
- Show proof of 100 logged dives, 25 must be deeper than 30metres/100feet
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