SIST EN ISO 24807:2024 PDF

Overview

SIST EN ISO 24807:2024 defines the essential requirements for training programmes in recreational rebreather diving with mandatory decompression up to 100 meters, using breathing gases that include helium. Developed by CEN in alignment with ISO 24807:2023, this standard ensures divers and training providers adhere to internationally recognized best practices. It covers competency criteria for rebreather diver training, as well as prerequisites and safety considerations, supplementing the general requirements found in ISO 24803 for recreational diving services.

Key Topics

• Scope of Training: The standard addresses training for dives to depths up to 100 m that require mandatory decompression, utilizing rebreathers with helium-rich mixed gases.
• Diver Competencies: Specifies the knowledge and practical skills necessary for safe, independent dives at these depths, including risk management, dive planning, and emergency protocols.
• Prerequisites:
  • Students must be at least 18 years old.
  • Prior qualification according to ISO 24806 (60 m rebreather diver).
  • Minimum logged experience with rebreathers, including dives at depth and use of helium mixtures.
  • Recent diving activity with the specific rebreather model used in training.
  • Medical fitness screening appropriate for deep and technical diving.
• Evaluation Criteria: Outlines how diver competencies are to be assessed, covering both theoretical knowledge and practical performance.
• Training Requirements:
  • Emphasis on understanding rebreather systems, gas management (especially use of helium), decompression procedures, equipment configuration, and emergency responses.
  • Team diving protocols, especially when using mixed equipment or gases.
  • Importance of equipment checks, maintenance, and post-dive procedures.
  • Ensures awareness of risks associated with deep diving, such as narcosis, hypoxia, hyperoxia, and equipment malfunctions.
• Instructors & Equipment: Sets out instructor competencies, responsibilities, and ratio of instructor-to-students, along with required training equipment and materials.

Applications

SIST EN ISO 24807:2024 is valuable for:

• Diving Training Organizations: Provides a clear framework to develop rebreather diver training courses for dives requiring complex decompression to 100 m.
• Recreational and Technical Divers: Ensures that divers receive training that meets international safety and competency standards for deep rebreather diving.
• Dive Service Providers: Assures clients and authorities that training programmes and assessments meet or exceed recognized European and ISO standards.
• Risk Management: Supports the reduction of risks related to deep rebreather diving and helps minimize incidents linked to improper use, insufficient training, or inadequate preparation.
• Regulatory Bodies: Aids in the harmonization of diving competence requirements across Europe, supporting safety in leisure, adventure tourism, and extended-range diving activities.
• International Recognition: Facilitates diver mobility and recognition of qualifications across borders, as the standard is maintained and recognized by national standardization bodies throughout Europe.

Related Standards

• ISO 24801-3: Requirements for the training of recreational scuba divers - Dive leader (Level 3)
• ISO 24802-2: Requirements for the training of scuba instructors (Level 2)
• ISO 24803: Requirements for recreational diving service providers
• ISO 24806: Requirements for rebreather diver training - Decompression diving to 60 m

Organizations providing rebreather diver training are encouraged to implement SIST EN ISO 24807:2024 in concert with these complementary standards for a comprehensive and robust training framework covering all stages and aspects of recreational and technical diving.

Keywords: SIST EN ISO 24807:2024, rebreather diver training, decompression diving, 100 meters, recreational diving services, CEN, ISO 24807:2023, helium breathing mixture, dive training standard, technical diving, diver safety, risk management.