UN基事故容错高铀密度核燃料芯块研究进展  

Research Progress of UN Based High Uranium Density Fuels for Accident Tolerance Fuels

作　　者：陈明周 廖业宏 郭达禧 张显生 王继伟 任啟森 薛佳祥 李锐 CHEN Mingzhou;LIAO Yehong;GUO Daxi;ZHANG Xiansheng;WANG Jiwei;REN Qisen;XUE Jiaxiang;LI Rui(China Nuclear Power Technology Research Institute,Shenzhen 518031,Guangdong,China)

机构地区：[1]中广核研究院有限公司,广东深圳518031

出　　处：《材料导报》2023年第S02期36-47,共12页Materials Reports

基　　金：国防科技工业局“十三五”核能开发项目。

摘　　要：福岛核事故之后,为了提高轻水堆运行的安全性和经济性,高铀密度核燃料芯块(高铀密度芯块)成为事故容错燃料(ATF)的重要研究内容之一。然而,高铀密度芯块应满足的最基本准则、表征其核心性能的有效指标、研发中需要解决的重要问题等关键性、基础性问题尚未理清。本文从最初作为ATF燃料的U_(3)Si_(2)的研究进展入手,分析高铀密度芯块研发的内在逻辑,总结出最基本准则及其有效表征指标;从UN基高铀密度芯块的研究进展梳理研发的方向和需要解决的关键问题,为高铀密度芯块开展基础研究、性能实验和关键技术攻关提供有益参考。Following Fukushima nuclear accident,high uranium density fuels(HUDFs)have become one of the important research topics of accident⁃tolerant fuel(ATF)to improve the safety,reliability and economy of light water nuclear reactors(LWR).However,the key and fundamental issues such as the most basic criteria that HUDFs should meet,the effective method to characterize oxidation⁃resistant performance,and how to enhance the oxidation⁃resistant capability,have not been clarified.Based on the instability of U_(3)Si_(2) in pressurized water,which was selected as ATF fuel at first,this paper analyzes the internal logic of R&D of HUDFs,and reaches on the primary criteria and effective method for performance characterization.From the research progress of UN⁃based HUDFs,the research direction and remaining problems to be solved are sorted out,which provides valuable information for scientific research,performance test and technical research.

关 键 词：事故容错燃料(ATF) 高铀密度芯块 硅化铀(U_(3)Si_(2)) 氮化铀(UN) 准则 抗氧化 高压釜 原位分析 

分 类 号：TL21[核科学技术—核燃料循环与材料]