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Report No.

First 3-D calculation of core disruptive accident in a large scale sodium-cooled fast reactor

Yamano, Hidemasa   ; Tobita, Yoshiharu; Fujita, Satoshi; Maschek, W.*

The present study attempted the first application of SIMMER-IV to a CDA in a large-scale SFR to draw event progression and to grasp key characteristics. Since the 3-D calculation requires much computation time, the SIMMER-IV calculation focused on the early stage of the transition phase in this study. The calculation result indicated mild event progression without recriticality. Compared to a small-scale SFR, it was found that the radial sloshing reactivity was not so significant in a large-scale SFR.



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