[3F01-07] PRA Method

[3F07] Development of the risk assessment technique for EAL

(2)The assessment of EAL severity

*Takanori Aoki¹, Mika Tahara², Nobuhisa Takezawa², Takahiro Nakagawa¹ (1. Toshiba Plant Systems & Services, 2. TOSHIBA ESS)

Keywords:EAL severity, SE, GE

The severity of EAL can be evaluated by the core damage probability with the condition that EAL occurs (CCDP) and the margin time from EAL occurrence to FP release. CCDP can be evaluated by the EAL frequency evaluation method that we presented at the previous meeting. In this presentation, we report an EAL timing evaluation method for evaluating the margin time from EAL occurrence to FP release.