On the need for accident models

Accident models play a vital role in the design of SHE information systems and in the training of users. They are simplified representations of the accidents occurring in real life. Each accident model has its own characteristics as to the types of causal factors that it highlights. In an accident investigation, for example, accident models support the investigators in  

Asking the right questions and defining the types of data to collect 

Establishing stop rules, i.e. rules for when to terminate the search for 

Checking that all relevant data has been collected 

Evaluating the data and structuring and summarising the data into 

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