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Document

thumbnail of Integration of a Causal Analysis process into an Accident Investigation Organisation

Author
Rebecca Charles & John Stewart
Abstract
Accident investigation requires a structure and framework within which to determine why an accident happened. The Rail Accident Investigation Branch (RAIB) promotes that causal analysis (CA) will be the backbone of its investigation activities. It will capture the logical structure of how events came together to result in the accident. It will also drive the evidence collection and interview strategies by defining what is necessary and relevant to understand the causality. RAIB recognises that there are many CA tools and techniques and encourages use of the most appropriate tools for each investigation. However, it is important to RAIB to define a discipline framework within which the relevant tools are applied and to strive for consistency in this across all investigations. Historically, there has been some variability in this. To achieve this consistency, it is necessary to understand the variability in understanding of CA processes and techniques by inspectors, how they have applied them and the challenges they have faced. To that end, 21 inspectors of varying experience were taken through a structured interview and the key issues elicited. These have been used as the basis for a revision to the RAIB’s approach to CA and its implementation.