Human Reliability Modeling in the Kernkraftwerk Muhleberg Seismic PSA

摘要

The modeling of human interactions (HI) in a Seismic Probabilistic Safety Assessment (SPSA) is more difficult than in other types of PSA models because seismic events involve additional performance shaping factor considerations. Factors such as the magnitude of the seismic event, timeframe for actions, and location of actions all must be considered in operator reliability modeling. A seismic impact matrix method was developed for the Kernkraftwerk Muhleberg (KKM) SPSA in order to realistically model operating crew performance in seismic event response. In addition, the seismic fragility of support structures that could impact operators was also considered. This paper describes the method developed for the KKM SPSA Human Reliability Assessment (HRA) including seismic performance shaping factors and quantification of related impacts.