TS EN ISO 24804

TS EN ISO 24804 addresses training programmes for recreational rebreather diving in the no-decompression range. It sets the competence framework for divers who are trained to carry out dives with a rebreather to a maximum depth of 30 m without mandatory decompression stops, and it defines how those competences are to be assessed.

The technical focus is the difference between rebreather diving and conventional open-circuit diving. A rebreather recycles part of the breathing gas, so the diver must manage gas composition, unit-specific procedures, monitoring, and operational discipline in a way that is distinct from ordinary scuba training. In general technical terms, this kind of standard is about ensuring that training services are structured around the equipment, depth limits, and breathing-gas conditions that shape the dive profile.

How the training requirements are organised

The document specifies the requirements under which training is provided, in addition to the general requirements for recreational diving service provision in ISO 24803. In practical terms, that means the training programme must develop the knowledge and skills needed for planning, operating, and managing no-decompression rebreather dives, together with the criteria used to judge whether those competences have been achieved. The scope is limited to nitrox breathing gas and does not extend beyond the stated depth and decompression boundary.

• Training programmes for dives up to a maximum depth of 30 m
• Dives that do not require mandatory decompression stops
• Assessment criteria for rebreather-diving competences
• Use of nitrox breathing gas
• Additional requirements alongside ISO 24803 recreational diving service provision