TS EN ISO 24806

TS EN ISO 24806 addresses how recreational diving services should structure rebreather diver training, with a focus on the competencies needed for dives to 60 m using a breathing mixture containing helium and requiring mandatory decompression stops. It frames training not just as equipment handling, but as a competency-based programme covering planning, gas management and decompression awareness for this demanding dive profile.

Training focus in rebreather diving

Rebreathers recycle exhaled gas, so they require different operational skills from open-circuit scuba systems. Helium-containing mixtures are used in deeper diving contexts to help manage breathing characteristics and gas density, while decompression stops are part of a controlled ascent strategy intended to reduce physiological stress after the dive. In practical training terms, that means the diver must learn equipment use together with pre-dive assessment, emergency awareness and ascent planning.

What the standard covers

• Rebreather diver training programmes for dives to 60 m
• Dive profiles using a breathing mixture containing helium
• Competencies for dives requiring mandatory decompression stops
• Evaluation criteria for those competencies
• Training delivered in addition to the general requirements for recreational diving service provision in ISO 24803

In effect, this standard provides a common technical framework for advanced recreational dive training. It defines the training service around depth, gas composition and decompression requirements, helping providers design programmes that are aligned to the same performance expectations.