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Report No.

Study on the flatting of power distribution for accelerator driven system

Iwanaga, Kohei; Kurata, Yuji; Oigawa, Hiroyuki ; Sekimoto, Hiroshi*

In this study, we performed to reduction of the peaking factor in accelerator driven system (ADS). The peaking factor influences direct for the temperature of the fuel cladding. In this time, multi regionalization of the reactor core and the fuel dilution material ratio every cycle were adjusted by adjusting a fuel pin diameter and a fuel diluent ratio, the peaking was reduced, and, as a result, it succeeded in the decrease of the cladding surface temperature of 120$$^{circ}$$C compared with one region core.



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