反应堆乏燃料棒的X射线数字成像检测工艺及其应用

Application of X-ray digital imaging technology to the examination of irradiated fuel rods from nuclear reactor

X射线数字成像检测技术是一种可实时成像的无损检测技术,为了将该技术应用于燃料棒辐照后的检验中,建立了一套完整地适用于高放射性环境中使用的成像装置。通过对检测对象特点和检验工艺的分析确定了合适的检测参数,经过对人工缺陷模拟件的检测,获得的图像质量满足检测精度的要求。该技术已经成功应用于反应堆燃料性能评价及破损燃料失效分析等工作中。

X-ray digital imaging technology is a nondestructive testing technology with real-time imaging.In order to apply this technology to the post irradiation examination of fuel rods,a complete set of imaging equipment suitable for highly radioactive environment has been established.Through the analysis of the characteristics of the test object and the examination process,the suitable test parameters are determined.The image quality obtained by the artificial defect simulation can meet the requirements of the examination.The technique has been successfully applied to the evaluation of reactor fuel performance and failure analysis of damaged fuel elements.