高燃耗下裂变气体释放行为研究与程序校验  

Code Validation and Study on High Burnup Fission Gas Release Behaviors

作　　者：任啟森 廖业宏 陈蒙腾 张永栋 谢亦然 刘彤 Ren Qisen;Liao Yehong;Chen Mengteng;Zhang Yongdong;Xie Yiran;Liu Tong(Tsiughua Shengzhen International Graduates School,Tsiughua University,Shenzhen,Guangdong,518055,China;China Nuclear Power Technology Research Institute Co.Ltd.,Shenzhen,Guangdong,518031,China)

机构地区：[1]清华大学深圳国际研究生院,广东深圳518055 [2]中广核研究院有限公司深圳市核电站高安全性事故容错燃料技术工程实验室,广东深圳518031

出　　处：《核动力工程》2019年第5期92-96,共5页Nuclear Power Engineering

基　　金：国家科技重大专项(2015ZX06004001);国家重点研发计划(2017YFB0702404)

摘　　要：采用燃料棒性能分析程序COPERNIC,针对哈尔登(Halden)测试燃料组件(IFA)519.9 DK辐照试验燃料棒辐照试验进行了计算分析,研究了高燃耗下裂变气体释放行为,并与试验数据进行了对比验证。结果表明,在燃耗达到约100 GW·d/t(U)的辐照过程中,该程序对裂变气体释放率的预测值与试验测量结果符合较好;程序未精确预测芯块孔隙率在高燃耗"边缘结构"内的演化过程,但不影响其对燃料棒辐照综合性能分析的准确性和合理性。Calculations and analyses of Halden IFA519.9 DK fuel rod irradiation test were carried out using the fuel performance code COPERNIC. Investigations on the high burnup fission gas release behaviors were implemented. Comparison between predictions and experimental results were performed. The results indicate that, during high burnup to ~100 GW·d/t(U) irradiation, the code predictions show good agreement with experimental data in terms of fission gas release. The code does not particularly model the evolution of fuel porosity within high burnup rim structure, however, the accuracy and rationality on fuel rod integrated performance analysis would not be affected.

关 键 词：燃料棒 裂变气体释放 Halden反应堆项目 高燃耗 

分 类 号：TL34[核科学技术—核技术及应用]