Most of the special fissile material plutonium exists in the commercial spent fuel assembly.In the field of nuclear safeguards,the verification of the plutonium content in the spent fuel assembly is particularly important.In order to analyze the content of plutonium in spent fuel assembly,31 typical pressurized water reactor(AFA-2G)spent fuel assemblies were taken as the research object.By analyzing the characteristics of U-Pu cycle burnup chain of nuclear fuel during reactor operation,the content of main isotopes in spent fuel assembly and the inherent neutron background of spent fuel assembly were calculated and analyzed.At the same time,the effective mass of 239Pu was calculated by using the Monte Carlo simulation method.This study provides data support for the non-destructive analysis method of plutonium content in spent fuel and the design of measuring equipment.
关键词
核保障/乏燃料组件/同位素含量/239Pu等效质量/中子本底
Key words
nuclear safeguards/spent fuel assembly/isotope content/239 Pu effective mass/neutron background
维普
万方数据