基于MCNPX的HFETR典型裂变产物逃脱率系数分析  

The Calculation Escape Rate Coefficient of Typical Fission Products of Hfetr Based on Mcnpx

作　　者：赖立斯 夏星汉 韩良文 高业栋 李冲 马小春 李松发 Lai Lisi;Xia Xinghan;Han Liangwen;Gao Yedong;Li Chong;Ma Xiaochun;Li Songfa(Nuclear Power Institute of China,Chengdu 610041,China)

机构地区：[1]中国核动力研究设计院,成都610041

出　　处：《核安全》2021年第3期25-29,共5页Nuclear Safety

摘　　要：本文采用MCNPX程序对某一炉段的堆芯布置进行建模,计算出了整个运行炉段不同时刻元件芯体内典型裂变产物的累积量,结合该炉段实际运行期间监测的一回路水质数据,通过数值计算得到HFETR典型裂变产物的逃脱率系数,并与核电厂辐射屏蔽设计标准进行比较。结果表明:HFETR典型裂变产物的逃脱率系数与核电厂标准存在数量级上的差距。因此,本文的研究成果对同类型研究堆的辐射屏蔽设计提供了参考。In order to obtain the escape factor of typical fission products of high-throughput engineering test re⁃actor(HFETR),and to provide reference for the radiation shielding design of the same type of research reac⁃tor,this paper uses the MCNPX program to model the core layout of a certain furnace section The cumulative amount of typical fission products in the core of the element at different times throughout the operating furnace section was calculated.Based on the water quality data of the primary circuit monitored during the actual opera⁃tion of the furnace section,the escape rate coefficients of typical fission products of HFETR were obtained through numerical calculations.Comparison of plant radiation shielding design standards.The results show that the escape rate coefficient of the typical fission products of HFETR has an order of magnitude difference from the nuclear power plant standard.

关 键 词：高通量工程实验堆(HFETR) MCNPX 裂变产物 逃脱率系数 

分 类 号：TL929[核科学技术—核燃料循环与材料]