TDI Advanced Mixed Gas CCR Diver – rEvo Rebreather Training

The TDI Advanced Mixed Gas Closed Circuit Rebreather Diver Course represents the highest level of closed-circuit rebreather training within the TDI system. This advanced technical diving program prepares experienced CCR divers to conduct deep mixed-gas dives using trimix diluent gases.

This course is conducted using the rEvo Closed Circuit Rebreather, a highly respected CCR unit known for its dual scrubber design, reliability, and efficient gas management.

Advanced mixed-gas CCR diving uses helium-based breathing mixtures to reduce nitrogen narcosis and maintain clarity at greater depths. Divers will learn how to safely plan and execute deep decompression dives using advanced gas planning and disciplined team procedures.

Training emphasizes precision, dive planning, gas management, and emergency response procedures while conducting deep technical dives using the rEvo CCR system.

The TDI Advanced Mixed Gas CCR Diver course allows divers to safely conduct deep CCR dives using custom trimix diluent gases to a maximum training depth of approximately 100 m / 330 ft. 

Course Price

$2500 per student

Included

• Academic theory training

• rEvo CCR equipment configuration workshops

• Advanced mixed-gas dive planning sessions

• Confined water skill development

• Open water deep CCR training dives

• Professional technical diving instructor guidance

Not Included

• TDI eLearning materials: $140

• Helium and diluent gas fills

• CO₂ absorbent materials

• Rebreather equipment rental

Course Schedule

Typical course duration: 5–7 days

Training includes:

• Classroom / theory sessions

• Rebreather system drills and emergency procedures

• Advanced dive planning exercises

• Minimum 7 CCR training dives

Training dives progressively increase in depth while practicing mixed-gas CCR decompression procedures.

Training Standards

Minimum Age

18 years old

Maximum Training Depth

100 meters / 330 feet

Prerequisites

• Certified TDI Mixed Gas CCR Diver or equivalent

• Minimum 100 logged CCR dives and 100 hours on a rebreather

• Minimum 50 hours and 50 dives on the specific CCR unit used during training 

These requirements ensure divers have extensive CCR experience before conducting extreme-depth technical dives.

What You Will Learn

During this course you will learn:

• Advanced trimix gas planning

• Deep CCR decompression procedures

• Equivalent narcotic depth (END) planning

• Advanced bailout and contingency planning

• Advanced rebreather system configuration

• Emergency procedures during deep CCR dives

These skills allow divers to safely conduct deep technical dives using a closed-circuit rebreather.

Certification

After successfully completing the course, students will receive the TDI Advanced Mixed Gas Closed Circuit Rebreather Diver certification for the rEvo unit.

Graduates may conduct deep CCR mixed-gas dives up to 100 m / 330 ft within the limits of their training.

Take Your CCR Diving to the Ultimate Level

Ready to explore extreme depths using rebreather technology?

Join our TDI Advanced Mixed Gas CCR Diver – rEvo Course and reach the highest level of CCR technical diving.

Reserve your spot today.