钠冷快堆系统分析程序FASYS模拟失流事故的验证与确认  

Verification and validation of the sodium-cooled fast reactor system analysis code FASYS for simulating loss of flow accident

作　　者：袁培 匡波[1] 刘鹏飞[1] 赵昱 侯捷名 YUAN Pei;KUANG Bo;LIU Pengfei;ZHAO Yu;HOU Jieming(School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学核科学与工程学院,上海200240

出　　处：《应用科技》2020年第6期63-70,共8页Applied Science and Technology

摘　　要：为了对钠冷快堆系统分析程序FASYS用于模拟失流事故的正确性与准确性进行测试,本文运用V&V(verification and validation)策略进行了验证与确认工作。分别介绍了现象识别与排序表、验证矩阵的建立过程,单元测试的实施过程,使用点堆方程解析解、燃料热导率随温度变化时的传热计算、SAS程序中子物理与衰变热计算、CEFR主泵工作特性4个分离效应分别验证FASYS程序点堆方程、燃料棒与冷却剂换热方程、衰变热计算方程、泵的水力方程4个模型的正确性,使用EBR-Ⅱ SHRT-17、SHRT-45R这2个整体效应初步确认FASYS程序能否用于模拟钠冷快堆的失流事故的过程。结果证明了使用FASYS程序模拟失流事故可行,并具有较高的准确性。In order to test the correctness and accuracy of the sodium-cooled fast reactor system analysis code FASYS for simulating loss of flow accident, the verification and validation(V&V) strategy is used for verification and validation. The establishment process of phenomenon identification and ranking table, verification matrix and the implementation process of unit test are introduced respectively. Four separate effects, including the analytical solution of point reactor equation, calculation of heat transfer when fuel thermal conductivity changes with temperature, SAS code neutron physics and decay heat calculation, CEFR main pump working characteristics, are used respectively to verify correctness and accuracy of the four models, including point reactor equation, fuel rod and coolant heat transfer equation, decay heat calculation method and pump hydraulic equation. And at the same time, the application of two integrated effects of EBR-Ⅱ SHRT-17 and SHRT-45 R preliminarily confirms whether the FASYS code can be used to simulate the loss of flow accident process of sodium cooled fast reactor. The results show that the FASYS code is correct and accurate for simulating the loss of flow accident.

关 键 词：系统分析程序 验证与确认 现象识别与排序表 验证矩阵 单元测试 分离效应 整体效应 EBR-Ⅱ 

分 类 号：TL364.4[核科学技术—核技术及应用]