高能X射线CT技术在辐照后核燃料组件检测中的发展及应用  

Development and Application of High Energy X-ray CT Technology in the Examination of Irradiated Fuel Assembly

作　　者：李建伟 何高魁[1] 张向阳[1] 谢乔[1] 肖丹 唐利华 LI Jianwei;HE Gaokui;ZHANG Xiangyang;XIE Qiao;XIAO Dan;TANG Lihua(China Institute of Atomic Energy,Beijing 102413,China;China Institute for Radiation Protection,Taiyuan 030006,China)

机构地区：[1]中国原子能科学研究院,北京102413 [2]中国辐射防护研究院,山西太原030006

出　　处：《同位素》2020年第2期124-132,I0003,共10页Journal of Isotopes

摘　　要：定期检测辐照后核燃料组件对保障反应堆安全运行和开展高燃耗下核燃料组件的性能研究具有重要意义。为了能在不拆卸、不破坏燃料组件的情况下更好地观察燃料组件及其内部燃料棒的缺陷及结构变化等信息,高能X射线计算机断层扫描(X射线CT)技术作为一种有效手段可用于辐照后核燃料组件的检测。日本多年来一直致力于该技术的研究工作,成为世界上唯一一个研制出用于辐照后燃料组件检测的高能、高分辨率X射线CT检测装置且应用于快中子反应堆现场检测的国家。为此,本文梳理日本近几十年来相关研究成果,介绍日本原子能研究开发机构(JAEA)研发的燃料组件高能X射线CT装置结构、工作原理、研究现状及部分应用实例,以期对我国核燃料组件无损检测技术的发展提供参考、借鉴。Regular examination of irradiated nuclear fuel assembly is of great significance to the safe operation of reactors and the performance study of nuclear fuel assemblies at high burnup.In order to observe the defects and the changes of the internal structure of irradiated fuel assembly without disassembling or destroying the fuel assembly,high-energy X-ray computed tomography(X-ray CT)technology can be applied to the examination of irradiated fuel assembly.Japan has been devoting itself to the research of high-energy X-ray non-destructive detection technology for nuclear fuel assembly for many years.It is the only country in the world to develop a high resolution X-ray CT device for the detection of irradiated fuel assembly and to apply it to the field examination of reactor.In this paper,the structure,working principle,research status and some application examples of the fuel assembly X-ray CT device developed by JAEA in Japan are introduced in detail on the basis of combing the relevant research results in Japan in recent decades.which can provide reference for the development of nuclear fuel assembly detection technology device in China.

关 键 词：燃料组件 辐照后检测 高能X射线CT 

分 类 号：TL364.2[核科学技术—核技术及应用]