耐事故燃料用于高性能压水堆的分析研究  

Analytical Study on Accident Tolerant Fuel Used in the High Performance Pressurized Water Reactor

作　　者：尹春雨 高士鑫[1,2] 钱立波 秦雪[2] 吴磊 张渝[2] 崔怀明[2] 肖忠[2] 苏光辉[1] Yin Chunyu;Gao Shixin;Qian Libo;Qin Xue;Wu Lei;Zhang Yu;Cui Huaiming;Xiao Zhong;Su Guanghui(School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi'an,710049,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]西安交通大学核科学与技术学院,西安710049 [2]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2023年第2期136-144,共9页Nuclear Power Engineering

摘　　要：为明确未来高性能压水堆(PWR)可采用的耐事故燃料(ATF)元件设计方案,本研究采用燃料性能、核设计、反应堆热工安全的适用分析方法,从安全性、经济性和燃料性能等方面对几种潜在的ATF设计方案进行综合分析。结果表明:采用SiC复合包壳+高铀密度燃料的方案较好;由于高铀密度燃料(包括UN、U_(3)Si_(2)及UN-U_(3)Si_(2)复合燃料)各自均具有鲜明的特点,其中UN-U_(3)Si_(2)复合燃料在理论上可以成为高铀密度燃料的一大特色,但从中子经济性的角度考虑需要将UN中^(15)N进行富集,而目前的富集技术将大大提高该型燃料的制造成本。因此本研究建议高性能PWR的ATF燃料元件设计宜选择SiC复合包壳+U_(3)Si_(2)燃料的设计方案。In order to determine the accident tolerant fuel(ATF)element design schemes for future high performance pressurized water reactor(PWR),this study comprehensively analyzes several potential ATF design schemes from the perspectives of safety,economical efficiency and fuel performance by using the methods applicable to the analysis of fuel performance,nuclear design and reactor thermal safety.The results show that the scheme of using SiC composite cladding+high uranium density fuel is good.High uranium density fuel includes UN,U_(3)Si_(2)and UN-U_(3)Si_(2)composite fuels,each of them has distinct characteristics,Among them,UN-U_(3)Si_(2)composite fuel can theoretically develop its strengths and avoid its weaknesses and become one of the characteristics of high uranium density fuel.However,from the perspective of neutron economy,it is necessary to enrich^(15)N in UN,and the current enrichment technology will greatly increase the manufacturing cost of this type of fuel.Therefore,the design scheme of SiC composite cladding+U_(3)Si_(2)fuel should be selected for the design of ATF fuel element of high-performance PWR.

关 键 词：耐事故燃料 SiC复合包壳 高铀密度燃料 燃料性能 

分 类 号：TL334[核科学技术—核技术及应用]