反应堆燃料表面沉积物生长和侵蚀研究综述  

Review on the Research of Deposition Growth and Erosion on Reactor Fuel Surface

作　　者：王荣涛 谢芳 王钰[1] WANG Rongtao;XIE Fang;WANG Yu(China Institute of Atomic Energy,Beijing,102413 China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《科技创新导报》2022年第20期31-35,共5页Science and Technology Innovation Herald

摘　　要：一回路结构材料内表面的腐蚀产物被冷却剂输运并沉积在燃料包壳表面上,会形成积垢,它可能会引起包壳局部腐蚀、堆芯轴向功率偏移和放射性的增加,随着燃料循环周期的延长和运行功率的提升,积垢日益成为影响反应堆安全运行的严重问题。本文通过调研,简述了积垢的沉积机理、源项与成分、危害性及应对手段,为未来的相关研究提供参考。Corrosion products on the inner surface of primary structure materials are transported by coolant and deposited on the surface of fuel cladding,and crud will be formed.It may cause local corrosion of cladding,axial power shift of core and increase of radioactivity.With the extension of fuel cycle and the increase of operating power,crud has increasingly become a serious problem affecting the safe operation of the reactor.Through investigation,this paper briefly describes the deposition mechanism,source term and composition,harmfulness and countermeasures of crud,to provide reference for relevant research in the future.

关 键 词：反应堆 燃料包壳 沉积物 积垢 腐蚀产物 

分 类 号：TL34-533[核科学技术—核技术及应用]