Development of failure mitigation technologies for improving resilience of nuclear structures, 5; Proposal of failure mitigation methods by fracture control

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

Utilizing fracture control, we are developing a technology to suppress the expansion of damage caused by an event that exceeds the design assumption. We proceeded with the study of concrete measures by taking the reactor vessel and piping of the next-generation fast reactor at ultra-high temperatures and during an excessive earthquake as an example.