IDHEAS – A NEW APPROACH FOR HUMAN RELIABILITY ANALYSIS
This paper describes a method, IDHEAS (Integrated Decision-Tree Human Event Analysis System) that has been developed jointly by the US NRC and EPRI as an improved approach to Human Reliability Analysis (HRA) that is based on an understanding of the cognitive mechanisms and performance influencing factors (PIFs) that affect operator responses. The paper describes the various elements of the method, namely the performance of a detailed cognitive task analysis that is documented in a crew response tree (CRT), and the development of the associated time-line to identify the critical tasks, i.e. those whose failure results in a human failure event (HFE), and an approach to quantification that is based on explanations of why the HFE might occur.
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- Resource Relation:
- Conference: ANS PSA 2013 International Topical Meeting on Probabilistic Safety Assessment and Analysis,Columbia, SC ,09/22/2013,09/26/2013
- Research Org:
- Idaho National Laboratory (INL)
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- Country of Publication:
- United States
- 99 GENERAL AND MISCELLANEOUS Cognitive Science; Human Performance; Human Reliability Analysis
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