Development of failure mitigation technologies for improving resilience of nuclear structures, 11; Analysis for enhancing resilience of next-generation nuclear power plants

Futagami, Satoshi  ; Ando, Masanori ; Yamano, Hidemasa   

To enhance resilience of next-generation nuclear power plants, the authors have performed a three-dimensional analysis of structures with an earthquake-resistant lower support structure, 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 at extremely high temperatures.