摘要
辐照后的燃料包壳出现破损时,裂变产物(可溶性固体、气体)释放将增加包壳外部环境介质的放射性活度,通过检测环境介质的放射性活度变化趋势可实现对燃料组件破损程度的定量检测。论文介绍了利用离线啜吸法测量133Xe的释放动力学曲线,根据此动力学曲线定量判断破损燃料组件破口的当量直径,并对燃料组件包壳完整性进行评价。
When the irradiated fuel cladding damaged , the released fission products including soluble solid and gas will increase the radioactivity of environment medium out of fuel cladding .Through the detection of the radi-oactivity changing trend of medium , we can realize the damage degree of fuel assembly in quantitation .The pa-per introduces how to depict the Xe -133 released curve in kinetics using off -line sipping method , and according to the kinetic curve , we can determine the equivalent diameter of the crevasse on the damaged fuel assembly in quantitation , and we can evaluate the cladding integrity of the fuel assembly .
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2014年第3期336-339,共4页
Nuclear Electronics & Detection Technology
关键词
离线啜吸
燃料组件
检测
off-line sipping
fuel assembly
detection
