大型先进压水堆硼稀释事故模拟分析  

Boron Dilution Accident Analysis for High-Power Passive Nuclear Plant

作　　者：韩向臻[1] 兰兵[1] 黄旭阳[1] 王喆[1] HAN Xiang-zhen;LAN Bing;HUANG Xu-yang;WANG Zhe(Nuclear and Radiation Safety Center, Beijing 100082, China)

机构地区：[1]环境保护部核与辐射安全中心,北京100082

出　　处：《核电子学与探测技术》2017年第11期1080-1084,共5页Nuclear Electronics & Detection Technology

基　　金：国家科技重大专项(2013ZX06002001)资助

摘　　要：基于美国先进三维节块法堆芯计算程序,建立大型先进压水堆堆芯首循环,选取四个最不利的保守事故工况点,包括满功率工况、启动工况、热备用工况、冷停堆工况,分别进行硼稀释事故分析,计算得到初始条件下的硼浓度以及硼稀释事故的临界硼浓度,最终计算总的硼稀释时间、报警发生时间以及从报警到临界的时间,分析大型先进压水堆发生硼稀释事故工况下的安全性。计算结果表明:在发生硼稀释事故工况下,反应堆有足够的时间在丧失全部停堆裕量前终止硼稀释。It is established that the calculation model of reactor assembly and the core model of the first cycle. Four conditions of boron dilution accident were selected in the first cycle,including full power,start-up,hot standby and cold shutdown. In the accident analysis,the model of boron dilution accident is established with reasonable assumptions,and the boron concentration under the initial conditions and the critical boron concentration are calculated. Using the code,the total time of boron dilution,the time of alarm occurrence and the time from alarm to critical were calculated under the condition of boron dilution. The calculation results show that there is enough time to termination boron dilution before the total shutdown margin lost when the boron dilution accident occurs.

关 键 词：大型先进压水堆 硼稀释 事故分析 

分 类 号：TL32[核科学技术—核技术及应用]