TDI Advanced Trimix

TDI Advanced Trimix

Why TDI Advanced Trimix?

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 or oxygen (O2) mixtures during decompression to a maximum depth of 100 metres. The objective of this course is to train divers in the benefits, hazards and proper procedures of utilizing custom trimix mixtures as breathing gases.

Upcoming Courses (back to top)

No courses organised at the moment, please contact us to discuss your requirements.

How do I book myself on a course?

To book yourself on a course please select one of the courses above, send us a message, and we will get back to you to discuss further details.

Further information on TDI Advanced Trimix (back to top)

What do I need to start?

TDI Advanced Trimix Diver Manual This course must be conducted using a twinset. Twinsets/regulators are available for hire for the duration of the course. In addition, there are a number of ancillary equipment items that are required for the course. Please contact us for full details. All of these can be hired for the duration of your training.

What will I do?

The course consists of a minimum of eight hours of theory/knowledge development, accompanied by a minimum of four decompression open water dives with an accumulated bottom times of over 100 minutes. It is suggested that all dives will exceed 55 metres. At least two of these dives MUST be deeper than 70 metres. Theory subjects include: Physics Review Physiology Review Formulas Review Use of helium Implications of helium - decompression/HPNS/ Suit inflation Decompression Options Equipment Considerations Dive computers Dive Planning Decompression Theory Decompression gas choice Ascent/Descent Techniques Decompression stations/types Surface Support considerations This course largely builds on the skills and techniques developed in your TDI Trimix course. However, given the more demanding nature of the dives being undertaken, a higher degree of proficiency is expected in all areas. Buoyancy, awareness, run time management, ascent/descent control, teamwork, gas management (and others) are all looked at closely.

How long will it take?

The course requires four days to cover all required material. The courses are usually scheduled to run over four consecutive days (Thursday-Sunday). Other scheduling options are available (i.e. over two weekends) but we strongly recommend the course is completed over the shortest period possible. Please understand that the course is performance based. This means that certification is only awarded upon demonstration of being capable to conduct deep trimix dives. This may involve further training dives beyond the four required.

What previous experience do I need?

To enrol on this course students must: 1. Be minimum age 18 2. Hold minimum certification of 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. 4. Provide proof of prior logged experience w/ double cylinders and any other unfamiliar equipment such as dry suit

What do the fees include?

All professional tuition Course Manual Insurance costs while on the course All registration fees with TDI upon completion. Use of Trimix analyser. Use of dive planning software (various types)

What don't fees include?

Hire of any equipment Cost of instructors trimix fills. Entry fee to dive site used for the Open Water dives (if applicable) Costs of transportation to and from dive sites (if applicable) Any personal costs (eg. food, drink, accommodation)

What can I do once I'm qualified?

Upon successful completion of this course, graduates may engage in technical diving activities utilizing custom trimix mixtures without direct supervision provided: Depth not to exceed 100 metres. The diving activities approximate those of training The area of activities approximates those of training Environmental conditions approximate those of training

What's next?

Advanced Trimix marks the pinnacle of the TDI open circuit training programme (excluding overhead environment courses). If you havent considered it already, and you are doing a lot of deep trimix diving, you might look at a move to rebreather (CCR) diving....especially when you see your open circuit gas bill!!