THERP

A comprehensive methodology covering task analysis, human error identification, human error modeling and human error quantification. It is best known for its human error quantification aspects through its human error probability (HEP) data tables and data quantifying the effects of various performance shaping factors (PSFs) that influence human errors at the operator level.[1][12]

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Sources
1. IACS International Association of Classification Societies LTD
12. MSC/Circ.1023-MEPC/Circ.392 Formal Safety Assessment

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