BWR制御材の影響に着目したシビアアクシデント時のFP化学挙動評価,2; FP放出・移行挙動に与える雰囲気の影響評価

Evaluation of FP chemistry under severe accident conditions with focuses on the effects of BWR control material, 2; Effect of atmosphere on the FP release and transport behavior

三輪 周平  ; 逢坂 正彦  ; Ducros, G.*; Hanus, E.*; Bottomley, P. D. W.*; Van Winckel, S.*

Miwa, Shuhei; Osaka, Masahiko; Ducros, G.*; Hanus, E.*; Bottomley, P. D. W.*; Van Winckel, S.*

雰囲気の異なる核分裂生成物(FP)放出移行模擬実験VERCORSの結果を用いて、FPの放出・移行挙動に与える雰囲気の影響を精度よく評価するためのFP化学挙動の解析手法を検討した。化学反応の進行を考慮することで、比較的低温における移行時のFP化学挙動を精度よく評価できることがわかった。

The analysis method of fission product (FP) chemistry for the precise evaluation of the effect of atmosphere on the FP release and transport was investigated by using the results of FP release and transport experiments VERCORS which were carried out at various atmosphere. The results of pseudo chemical kinetics calculation show good consistency with experimental results of FP chemistry in the transport at relative low temperature.