HFETR碘坑后沿启堆临界棒位的估算  

Estimation of Critical Rod Position along the Start-up Reactor after the Iodine Pit of HFETR

作　　者：于成波 李敏[1] 廖路 刘旭东[1] 唐豪 徐涛 高燊甫 YU Cheng-bo;LI Min;LIAO Lu;LIU Xu-dong;TANG Hao;XU Tao;GAO Shen-fu(Nuclear Power Institute of China,Chengdu of Sichuan prov.610041,China)

机构地区：[1]中国核动力研究设计院,四川成都610041

出　　处：《中国核电》2021年第1期70-73,共4页China Nuclear Power

摘　　要：本文研究高通量工程试验堆(HFETR)在碘坑内启动反应堆的问题。首先根据反应堆在碘坑内启堆时碘(135I)和氙(135Xe)浓度随时间变化关系推导出了氙毒引入的反应性随时间变化的解析表达式;接着针对HFETR某炉段进行研究,并结合冷却剂温度效应、燃耗及停堆前的棒位,给出估算碘坑后沿启动反应堆的临界棒位的方法;最后基于MATLAB软件开发用于估算碘坑后沿启动反应堆的临界棒位的程序。In this paper,the start-up of high flux engineering test reactor(HFETR)in iodine pit is studied.Firstly,the analytical expression of the reactivity of xenon with time was deduced according to the timedependent relationship between the concentration of iodine(135 I)and xenon(135 Xe)when the reactor was started in the iodine pit;Then,a furnace section of HFETR is studied,combined with the coolant temperature effect,fuel consumption and the rod position before shutdown,the method of estimating the critical rod position of the start-up reactor along the back of iodine pit is given;Finally,the program for estimating the critical rod position of the start-up reactor along the back of iodine pit is developed based on MATLAB software.

关 键 词：高通量工程试验堆 碘坑 临界棒位 燃耗 氙毒 

分 类 号：TM623[电气工程—电力系统及自动化]