Development of failure mitigation technologies for improving resilience of nuclear structures, 15; Conceptual study for improving resilience of next-generation nuclear power plants under extremely high temperature conditions

Futagami, Satoshi  ; Ando, Masanori ; Yamano, Hidemasa   ; Kasahara, Naoto*

To improve resilience of next-generation nuclear power plants, the authors have performed a structural analysis assuming a protected loss of heat sink event, which may cause all decay heat removal systems to lose their functions immediately after reactor shutdown. The results show how the reactor vessel and guard vessel deform under extremely high temperatures.