[2H17-19] Fast Reactor Safety Evaluation

[2H17] Quantitative risk assessment of accident management against volcano ash hazard in sodium-cooled fast reactor

Sequential evaluation on accident management at volcanic ash fall

*minoru suzuki¹, yuki takase¹, takaaki sakai¹, takasi takata², norihiro doda² (1. Tokai univ University, 2. JAEA)

Keywords: Sodium cooling fast reactor, external hazard, Continous Markov chain Monte-Carlo method

Quantitative risk assessment of sodium cooled fast reactor is aimed at establishing a method to evaluate the superposition of multiple faults considering the passage of time in the external hazard event, and aims at establishing a method to evaluate the superposition of faults caused by volcanic eruption event by CMMC method We analyzed using characteristic analysis code (Super-COPD). As a result, we propose about the effect on the plant and quantification of the frequency of exceeding limit of coolant boundary temperature.