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Yagi, Masatoshi; Matsuyama, Akinobu; Nuga, Hideo; Aiba, Nobuyuki; Ishii, Yasutomo; Fukuyama, Atsushi*
no journal, ,
The current status and issues on disruption research are overviewed in the view point of experiment and DEMO reactor design. Following them, the domestic activity on theory and simulation research aimed for the disruption control will be explained. The progress of simulation research on the runaway electrons and the integrated transport simulation of disruption control are presented. Finally, the urgent issues on the disruption research will be discussed.
Zheng, X.; Tamaki, Hitoshi; Shibamoto, Yasuteru; Takada, Tsuyoshi
no journal, ,
JAEA is constructing a dynamic probabilistic risk assessment (PRA) approach which integrates deterministic accident analysis and probabilistic reliability analysis, and developing an associated computational tool, RAPID. Taking the estimation of failure probability of machines as an example, this paper identifies latent sources of epistemic uncertainties in PRA. To reduce such epistemic uncertainties, authors have proposed to apply probabilistic physics-of-failure by dynamically modeling the interaction between operational conditions and failure probabilities of machines. Moreover, authors have implemented automatic coupling techniques between simulation codes in RAPID.