[3P05-07] LWR Performance during Accident

[3P05] Evaluation of Molten Core Coolability in Containment Vessel using JASMINE code

*Yuzuru Iwasawa¹, Toshinori Matsumoto¹, Ryuhei Kawabe¹, Kohei Ajima¹, Tomoyuki Sugiyama¹, Yu Maruyama¹ (1. JAEA)

Keywords:Severe accident, JASMINE, Agglomeration, Melt spreading

For assessment the molten core coolability during severe accident in LWRs, we improved the models in the JASMINE code regarding to agglomeration of melt particles and melt spreading in containment vessel based on the DEFOR-A and the PULiMS experiments conducted by KTH. The improved models generally show good agreement with these experimental results.