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TDI JJ-CCR Decompression Procedures

5 days -£795

The objective of this course is to train CCR Air Diluent divers or already qualified open circuit technical divers in the benefits, hazards and proper procedures for diving on the JJ-CCR with air as a diluent gas to a maximum depth of 45 metres including decompression. It is highly recommended to have your own unit for the course but if you'd prefer we can rent you a JJ-CCR for £100 per day for the duration of your course.

Skills include:

Decompression planning

Setup and maintenance of the unit

Calibration of electronics

Loop volume management

Buoyancy control

Bailout & emergency procedures

CNS tracking             


Minimum of 18 years of age

Be an open circuit qualified technical diver (TDI Advanced Nitrox & Deco Procedures/IANTD ART/PADI Tec 45 or equivalent)

Have a minimum of 50 logged open water dives.


Hold an Air Diluent CCR Diver certification from any agency

Have a minimum of 30 hours on the CCR unit with 6 months CCR diving experience. 


Knowledge Development             

You'll have a TDI rebreather manual to work through and there'll be a number of theory sessions throughout the course to go over knowledge reviews and ensure sufficient knowledge is attained prior to the final exam. we'll also conduct a service and repair workshop for dive site maintenance & problem solving. 


Cost & Duration

5 days - £795



Certification Fee

Instructor’s gas, sofnolime & entry (if applicable)

Bailout & decompression cylinder & regulator hire


The cost of your own gas and sofnolime is not included for the course duration. Travel to and from the training locations and open water sites are your responsibility. The JJ-CCR course can either take place or culminate at NDAC, there is a fee of £17 per student per day payable directly to the centre. There is also a fee for any additional equipment required to be rented for the course.  


What’s next

Once you have completed a minimum of 50 CCR dives totalling at least 50 hours (25 hours minimum on the JJ-CCR) you can progress to the TDI CCR Mixed Gas course (MOD2/Level 2). The course is designed to use trimix as a diluent and bailout gas to safely conduct decompression diving to a maximum depth of 60 metres.

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