Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Physics analysis of new TRU recycling options using FCM and MOX fueled PWR assemblies

  • Cho, Ye Seul (Department of Nuclear Engineering, Kyung Hee University) ;
  • Hong, Ser Gi (Department of Nuclear Engineering, Kyung Hee University)
  • Received : 2019.07.15
  • Accepted : 2019.10.07
  • Published : 2020.04.25
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Abstract

In this work, new multi-recycling options of TRU nuclides using PWR fuel assemblies comprised of MOX and FCM (Fully Ceramic Micro Encapsulated) fuels are suggested and neutronically analyzed. These options do not use a fully recycling of TRU but a partial recycling where TRUs from MOX fuels are recycled while the ones from FCM fuels are not recycled due to their high consumption rate resulted from high burnup. In particular, additional external TRU feed in MOX fuels for each cycle was considered to significantly increase the TRU consumption rate and the finally selected option is to use external TRU and enriched uranium feed as a makeup for the heavy metal consumption in MOX fuels. This hybrid external feeding of TRU and enriched uranium in MOX fuel was shown to be very effective in significantly increasing TRU consumption rate, maintaining long cycle length, and achieving negative void reactivity worth during recycling.

Keywords

References

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