Accident precursors : pro-active identification of safety by P.M.W. Körvers.

By P.M.W. Körvers.

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Sample text

It is therefore assumed that in the daily operation more soft deviations can be identified than could be done by using FACTS. In the next sub-Section the risk coverage area of the 158 deviations will be determined. 3 Risk coverage area of deviations prior to accidents To derive the risk coverage of the identified deviations in recent accident trajectories, the likelihood and the consequences of these deviations must be identified. The definitions of the likelihood and consequences are identical to the definitions used for the construction of the risk coverage area of the pro-active SI’s.

The findings can be generalized by analysing several cases and eventually verified by some practical examples. This results in the philosophical positioning of this research as positivistic. Other, often made distinction in types of research, are between; exploration, description, explanation, and testing, van der Zwaan (Zwaan van der, 1990). Exploration is conducted when theoretical knowledge in literature lacks information on which variables are important. Description types of research aim at the relevance of the variables.

In this way the retrieved operational measures are validated. Reliability analysis shows that tasks performed to construct the research can be replicated by other researchers and will result in identical findings. Reliability of the case histories will be demonstrated by using a designed flow scheme, indicating how all findings retrieved from the accident database will be used. All findings collected during the four case studies will be put into separate case study databases, from which evidence will be retrieved when discussing the case studies in Chapter 5 and 7.

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