Research and development of full-scale three-dimensional vibration simulator for nuclear plant

Nishida, Akemi  ; Suzuki, Yoshio   ; Yamada, Tomonori; Kino, Chiaki; Uzawa, Ken*; Miyamura, Hiroko  ; Kawamura, Takuma ; Takemiya, Hiroshi; Nakajima, Norihiro  

Nuclear plants are complicated and huge structures and consist of a large number of parts. To simulate the behavior of such a complicated huge structure, it becomes important the viewpoint as a general system including pre-post-processing. Therefore, the CCSE proposed an approach for assembly structure analysis and implemented a framework of a full-scale 3D vibration simulator for an entire nuclear plant. Until now, we performed numerical experiments using the data of a building and equipment of HTTR, Oarai R&D Center, JAEA, and demonstrated that earthquake response simulation of large-scale structure as an entire nuclear plant was possible so far. In this report, the framework of the full-scale 3D vibration simulator, the assembly structure analysis approach and visualization technology for an evaluation of the results are shown. And finally, an example of application of the simulator for probabilistic risk assessment, PRA, started from 2011, is shown.