[2I08-10] Dismantle of Fuel Assembly and Sever Accident of Reprocessing Plant

[2I10] Enhancement of Analysis Method for Important Phenomena of Severe Accident at Reprocessing Plant

(10)Identification of Uncertainty Parameter of FATE Code for HALW Boiling and Drying Accident

*Daisuke Fujiwara¹, Hisayuki Kyo¹, Hisoshi Shirai¹, Tahashi Kodama², Yoshikazu Tamauchi², Naoya Satoh², Mikio Kumagai³ (1. TEPSYS, 2. JNFL, 3. UI Science)

Keywords:Boiling and Drying Accident, Source Term, Uncertanty Analysis, PIRT

Estimation of statistical uncertainty of source term due to the uncertainty of input parameters and phenomenological uncertainty is essential to understand the impact of boiling and drying accident. On this background, uncertainty parameters of FATE code were identified and classified based on the methodology described in NUREG/CR-7155 SOARCA report. The strategy to identify the uncertainty distribution of those parameters was also presented in this study.