2016年春の年会

講演情報

一般セッション

III. 核分裂工学 » 301-1. 炉物理,核データの利用,臨界安全

[1O13-16] 不確かさ評価1

2016年3月26日(土) 15:50 〜 16:55 O会場 (講義棟C棟 C201)

座長:櫻井 俊吾(東芝)

15:50 〜 16:05

[1O13] Statistical Uncertainty in Kinetic Analysis using Integral Kinetic Model for Re-criticality Accident in Weakly-Coupled Fuel Debris

*Delgersaikhan Tuya1, Hiroki Takezawa1, Toru Obara1 (1.Tokyo Institute of Technology)

キーワード:integral kinetic model, criticality accident, statistical uncertainty propagation, weakly-coupled fuel debris

In the Integral Kinetic Model (IKM), which describes time- and space-dependent fission rate during criticality excursion in a nuclear fissile system, the key kinetic parameters are obtained using the Monte Carlo method. Therefore, there is an inevitable statistical uncertainty in estimation of those parameters and such uncertainty propagates through subsequent kinetic calculation by IKM. Estimating the statistical uncertainty in the obtained fission rate will help not only an effort to reduce it, but also a further uncertainty analysis in estimation of other quantities that use the obtained fission rate. In this work, estimation of statistical uncertainty propagation in kinetic analysis for the case of re-criticality accident in weakly-coupled fuel debris is performed.