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Report No.
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Nuclear transmutation characteristics of reduced moderation BWR (Thesis)

Fukaya, Yuji   

The nuclear transmutation characteristics of reduced moderation BWR (RMBWR), which decides the spent fuel characteristics and its safety in its nuclear fuel cycle, were investigated and compared with other types of reactors. The major conclusions were obtained as follow: Breeder type of RMBWR shows low decay heat and radioactivity from FPs because of the long operation period approximately 3000 days which realized by the high conversion ratio. That also shows low decay heat and radioactivity from actinide nuclides due to the hard spectrum. MA recycling reactor of high conversion type of RMBWR was designed. The neptunium, which has large impact for environmental burden form the view point of nuclide transport analysis, can be incinerated approximately 40% of loaded inventory which corresponds to 22 units of LWR per year.

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