methods to the performance of nuclear power plant crews in a control room simulator. There are a number of unique aspects to … performance; (4) a relatively large sample size of crews; (5) the use of multiple methods and scenarios to provide a well …-rounded view of HRA performance; (6) the importance of clearly defined human failure events; and (7) the use of a common comparison …

, starting with pre-defined nominal error rates for cognitive vs. action oriented tasks, and incorporating performance shaping … nominal, degraded, and severely degraded human performance for individual PSFs. Additionally, some PSFs feature multipliers to … reflect enhanced performance. Although SPAR-H enjoys widespread use among industry and regulators, current source documents on …

representations of human performance through an increasingly long list of performance shaping factors (PSFs). It is not clear, however …