Impact of the Core Minor Actinide Content on Fast Reactor Reactivity Coefficients

概要

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A major challenge for future fast reactors could be the recycling of minor actinides (MAs) in the core fuel in order to minimize waste and to meet both the sustainability objective and the reduction in the burden of geological disposal. Although the prevailing issues will be found in the development and validation of the appropriate fuels, the presence of MAs in the core can deteriorate the core reactivity coefficients. However, in this paper, we will show that there is no well-defined physical limit to the amount of MAs in the core fuel, and that a careful physics analysis can indicate the most appropriate measures that reduce the MA impact on the reactivity coefficients, and in particular, for Na-cooled reactors, on the Na void reactivity coefficient.
社団法人日本原子力学会の論文