Generation of Group Constant of Fission Product for Criticality Analysis of Spent Fuel

사용후 핵연료의 핵임계도 분석에 필요한 핵분열생성물의 핵군단면적 생산

  • Shin, H.S. (Korea Atomic Energy Research Institute) ;
  • Choi, B.I (Korea Atomic Energy Research Institute) ;
  • Park, J.M. (Korea Atomic Energy Research Institute) ;
  • Ro, S.G. (Korea Atomic Energy Research Institute)
  • Published : 1989.12.20


A FISSLIB, 51 group nuclear data set for 22 product nuclides, which are present in spent fuel and significantly affect the criticality of spent fuel, was generated from ENDF/B-IV using XLACS-II. The FISSLIB is ready to be used together with a data set generated from DLC-43/CSRL using AMPX system. The reliability of FISSLIB was verified by comparison with the data reported in BNL-325. Using FISSLIB, the criticality of KORI-1 spent fuel rod arranged infinitely was analyzed, and it was found that $K_{eff}$ of the spent fuel including fission products was lower by 9-14% than that calculated without fission products.