Human Reliability Analysis in the Context of Accident Scenarios

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Human Reliability Analysis in the Context of Accident Scenarios

This article addresses the issue of human reliability analysis (HRA) in the context of accident scenarios. The need for contextual analysis of human operator behavior with careful treating of errors and dependent failures within given accident scenario is emphasized. The functional safety analysis including the human reliability analysis is illustrated on example of the protection layers of a hazardous industrial system that includes the basic process control system (BPCS), human-operator (HO) and safety instrumented systems (SIS) designed with regard to the functional safety criteria.

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