Development of failure mitigation technologies for improving resilience of nuclear structures, 20; Proposal of passive safety structures without catastrophic failure

Kasahara, Naoto*; Yamano, Hidemasa   ; Nakamura, Izumi*; Demachi, Kazuyuki*; Sato, Takuya*; Ichimiya, Masakazu*

This report proposes passive safety structures which avoid catastrophic failure leading to the loss of safety function by naturally mitigating loads as a result of early occurrence of small failure mode on the safety function as new countermeasures in structural areas beyond design basis events.