CAJ | 학술논문

基于乏燃料贮存领域常用的锕系加裂变产物（APU‐2）级燃耗信任制，应用二维组件燃耗计算程序CASMO5，计算了燃耗过程中功率密度和运行历史对乏燃料 k∞的影响。结果表明：燃耗计算中，选择堆芯额定功率对应的平均功率密度，同时k∞附加0.0023的包络裕度，运行历史选择循环内及循环间无停堆额定功率运行，同时 k∞附加0.0045的包络裕度，可满足燃耗信任制中包络性原则。
기우핍연료저존영역상용적아계가렬변산물（APU‐2）급연모신임제，응용이유조건연모계산정서CASMO5，계산료연모과정중공솔밀도화운행역사대핍연료 k∞적영향。결과표명：연모계산중，선택퇴심액정공솔대응적평균공솔밀도，동시k∞부가0.0023적포락유도，운행역사선택순배내급순배간무정퇴액정공솔운행，동시 k∞부가0.0045적포락유도，가만족연모신임제중포락성원칙。
Based on the burnup credit of actinides+fission products (APU‐2) which are usually considered in spent fuel package ,the effect of power density and operating histo‐ry on k∞ was studied .All the burnup calculations are based on the two‐dimensional fuel assembly burnup program CASMO5 . The results show that taking the core average power density of specified power plus a bounding margin of 0.002 3 to k∞ ,and taking the operating history of specified power without shutdown during cycle and between cycles plus a bounding margin of 0.004 5 to k∞ can meet the bounding principle of burnup credit .