Proceedings of the Korean Nuclear Society Conference (한국원자력학회:학술대회논문집)

Korean Nuclear Society (한국원자력학회)
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Fuel Composition Heterogeneity Effect for DUPIC Core

  • Park, Hangbok (Korea Atomic Energy Research Institute) ;
  • Bo W. Rhee (Korea Atomic Energy Research Institute) ;
  • Park, Hyunsoo (Korea Atomic Energy Research Institute)
  • Published : 1995.10.01
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Abstract

A preliminary study of the heterogeneity effect of spent P% fuel in CANDU was made using a reduced spent PWR fuel data base. The instantaneous core simulation has shown that the refueling ripple in the CANDU reactor is large if the spent PWR fuel is directly used. But the fuel heterogeneity effect can be reduced appreciably by blending spent PWR fuel with a small amount of fresh UO$_2$. The refueling simulation has shown that the operating margins of 6.0% and 8.7% are achievable for the peak channel and bundle powers, respectively, with the blended fuel.

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