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Kasahara, Naoto*; Yamano, Hidemasa; Nakamura, Izumi*; Demachi, Kazuyuki*; Sato, Takuya*; Ichimiya, Masakazu*
no journal, ,
This paper reports a technology to suppress the expansion of damage caused by beyond design basis events (very high temperature in a severe accident or excessive earthquake), and the outline of the development plan for improving the resilience of the reactor structure (resistance and resilience to deterioration of safety performance).
Kasahara, Naoto*; Yamano, Hidemasa; Nakamura, Izumi*; Demachi, Kazuyuki*; Sato, Takuya*; Ichimiya, Masakazu*
no journal, ,
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.
Kuwahara, Yuto*; Demachi, Kazuyuki*; Chen, S.*; Kasahara, Naoto*; Nishino, Hiroyuki; Onoda, Yuichi; Kurisaka, Kenichi
no journal, ,
no abstracts in English
Kasahara, Naoto*; Yamano, Hidemasa; Nakamura, Izumi*; Demachi, Kazuyuki*; Sato, Takuya*; Ichimiya, Masakazu*
no journal, ,
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.