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

Korean Nuclear Society (한국원자력학회)
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Analysis of the Nuclear Subcriticality for the High Density Spent Fuel Storage at PWR Plants

  • Koh, Duck-Joon (Nuclear Environment Technology Institute (NETEC)) ;
  • Yang, Ho-Yeon (Nuclear Environment Technology Institute (NETEC)) ;
  • Kim, Byung-Tae (Nuclear Environment Technology Institute (NETEC)) ;
  • Jo, Chang-Keun (Korea Advanced Institute of Science and Technology Department of nuclear Engineering) ;
  • Hokyu Ryu (Korea Advanced Institute of Science and Technology Department of nuclear Engineering) ;
  • Cho, Nam-Zin (Korea Advanced Institute of Science and Technology Department of nuclear Engineering)
  • Published : 1998.05.01
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Abstract

The marginal nuclear criticality analysis for the high density spent fuel storage at a PWR plant was carried out by using the HELIOS and CASMO-3 codes. More than 20 % of the calculated reactivity saving effect is observed in this analysis. This mainly comes from the adoption of some important fission products and B-10 in the criticality analysis. By taking burnup and boron credits, the high capacity of the spent fuel storage rack can be more fully utilized, reducing the space of storage. Larger storage for a given inventory of spent fuel should result in remarkable cost savings and mort importantly reduce the risks to the public and occupational workers.

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