The
final goal of MCCI prevent interaction of corium and concrete. In addition to
this, we have to eliminate decay heat and secure corium coolability. But it
hardly prevents MCCI phenomena. Nuclear engineer research a way which obtain
coolability and delay molten corium –concrete interaction like core catcher
system. MCCI accompanies many gases such as H2, CO2, CO, H2O and concrete
ablation. Therefore, we focus on the how to act non condensable gases and what
parameters govern concrete ablation such as temperature, decay heat, melt
compositions and concrete compositions.