[M25-30] 福島事故セッション1

[M27] Melt behavior analysis by MPS method

(6) Melt behavior in BWR lower head

^〇Gen Li¹, Yoshiaki Oka¹, Kyosuke Hasegawa¹, Masahiro Furuya² (1.Waseda University, 2.Central Research Institute of Electric Power Industry )

Keywords:Melt behavior, Lower head, Thermal equilibrium, MPS method, MELCOR

Melt behavior in BWR lower head after pressure vessel dryout was investigated by thermal equilibrium calculation, moving particle semi-implicit (MPS) method . Time-dependent melt behavior is estimated from the result and comapred with MELCOR analysis. The sensitivity analysis of initial debris configuration and porosity was also performed.