TDI Advanced Nitrox & Helitrox

Why TDI Advanced Nitrox & Helitrox?

This course examines the theory, methods and procedures for planned stage decompression diving utilizing Helium in the breathing mixture. The objective of this course is to train divers how to plan and conduct a standard staged decompression dive not exceeding a maximum depth of 45 metres. The most common equipment requirements, gear set-up, and decompression techniques are presented. Students will be permitted to utilize Enriched Air Nitrox and Helium mixes with no greater than 20% He content, and up to 100% oxygen for decompression diving. Breathing gas mixtures containing more than 20% Helium or less than 21% oxygen are not permitted. PLEASE NOTE: Advanced Nitrox and Helitrox can be conducted as stand alone course in their own right. If this is what you are interested in, please get in touch with us for further details.

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 Nitrox & Helitrox (back to top)

What do I need to start?

TDI Advanced Nitrox Student Manual TDI Decompression Procedures Student Manual TDI Extended Range/Trimix Student 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 ten hours of theory/knowledge development, accompanied by a minimum of six open water dives. Two of those dives must be deeper than 30 metres. Subject areas covered include: Physics Review Physiology Review Formulas Review Dis/advantages of Helium HPNS Equipment Considerations Dive table review Dive computers Dive Planning Decompression Theory Decompression gas choice Ascent / Descent Techniques Dive tables vs computers The open water dives will develop students: Teamwork situational awareness buoyancy trim stress analysis/mitigation stage handling ascent/descent techniques awareness gas management

How long will it take?

The course requires three days to cover all required material. The courses are usually scheduled to run over four consecutive days (THursday/Friday/Saturday/Sunday). Other scheduling options are available 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: Minimum age 18 Certified as an SDI Advanced Diver (with Deep specialty) or TDI Intro to Tech or equivalent Certified as a TDI Advanced Nitrox Diver or equivalent. Student may be enrolled in both the TDI Helitrox and Advanced Nitrox course at the same time Provide proof of 50 logged dives

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 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 decompression diving activities without direct supervision, utilizing helium and/or nitrox mixtures so long as: Dives do not exceed 45 metres The diving activities approximate those of training The areas of activities approximate those of training Environmental conditions approximate those of training Breathing mixtures do not contain more than 20% Helium or less than 21% Oxygen (+/- 1%) and are within their current diving certification level.

What's next?

Upon successful completion of this course, graduates are qualified to enroll in: TDI Extended Range Course TDI Trimix