池壳式研究堆停堆后非能动余热导出特性研究  

Study on Characteristics of Passive Residual Heat Removal for Tank in Pool Research Reactor after Shutdown

作　　者：季龙 郭景新 李海涛[1] 杨易军 袁志敏[1] Ji Long;Guo Jingxin;Li Haitao;Yang Yijun;Yuan Zhimin(Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]中国核动力研究设计院,成都610213

出　　处：《核安全》2024年第5期71-75,共5页Nuclear Safety

摘　　要：本文以国内某池壳式研究堆为研究对象,采用RELAP5计算并分析了剩余释热功率以及堆水池初始温度对压力容器上部温度的影响。结果表明当剩余功率保持不变时转入间断冷却,随着堆水池初始温度的上升,压力容器上部温度达到50℃的时间会明显缩短。特别是,当堆水池的初始温度设定为10℃,且在剩余功率为0.5%FP的条件下转入间断冷却,压力容器上部的温度将始终保持在50℃以下。进一步证明了池壳式反应堆的安全性,并为停堆后的经济冷却方式选择和长期安全提供了依据。In this paper,a domestic research reactor with tank in pool is taken as the research object,and RELAP5 is used to calculate and analyze the influence of the residual power and the initial temperature of the reactor pool on the upper temperature of the pressure vessel.The results show that the higher the initial temperature of the reactor pool is,the shorter the time when the upper temperature of the pressure vessel reaches 50℃.When the initial temperature of the reactor pool is 10℃ and the residual power is 0.5%FP,the upper temperature of the pressure vessel will not exceed 50℃,which further proves the safety of the tank in pool reactor and provides a basis for the selection of economic cooling mode and long-term safety after shutdown.

关 键 词：池壳式 自然散热 RELAP5 

分 类 号：TL411.3[核科学技术—核技术及应用]