The Accident Investigation Board Norway has developed a common framework and analysis process for systematic safety investigations within the four transport modes (‘The AIBN method’).

The framework describes how the AIBN collects, organises, analyses and interprets information and data from accidents in a systematic, verifiable manner. Furthermore, it describes how the AIBN understands accidents, why they occur and how safety can be improved to prevent new accidents occurring.

The AIBN’s analysis process is divided into the following seven stages adapted to the scope of the investigation:

Stage 1: Clarifying the sequence of events and circumstances of the accident.

Stage 2: Identifying local safety problems = ‘what went wrong’ in the sequence of events.

Stage 3: Barrier analysis.

Stage 4: Identifying risk factors.

Stage 5: Assessing causality and importance.

Stage 6: Considering systemic safety problems (safety issues) = areas for improving safety.

Stage 7: Assessing the need for safety recommendations.

The document describing the AIBN method is available for download below. 

Contact person: Coordinator Advisory Staff, Ingvild Ytrehus, e-mail.

 AIBN Method 2018 webAIBN Method 2018 web

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