AP1000核电厂丧失主给水ATWS事故CMT注射分析  

CMT Injection Analysis on Loss of Normal Feedwater Flow Accident ATWS of AP1000 NPP

作　　者：廖亮[1] 周全福[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《原子能科学技术》2011年第12期1462-1465,共4页Atomic Energy Science and Technology

摘　　要：堆芯补水箱(CMT)是AP1000核电厂非能动堆芯冷却系统(PXS)的重要组成部分。在通常情况下,当主泵开启时,CMT即使被触发,也不能注入堆芯。然而在某些事故工况下,即使主泵开启,CMT也有可能注入,它将直接影响事故进程及分析结果。应用压水堆核电厂通用系统程序RELAP5MOD3.1对AP1000核电厂丧失主给水ATWS事故进行了计算分析,验证了美国西屋公司LOFT4AP2.0.1程序计算结果的正确性,并分析找出了CMT成功注入的根本原因。The core makeup tank （CMT） is an important part of the passive core cooling system （PXS） of AP1000 nuclear power plant. Typically, while the main pump is on, CMT can not inject into the core even it is actuated. However, CMT＇s injection becomes successful under certain accident scenarios. This influences the accident process and is very important to accident analyses. This study analyzed the loss of normal feed- water flow anticipated transient without scram （ATWS） accident using the general system code RELAP5 MOD3.1. The result confirms the conclusion of the Westinghouse system code LOFT4AP2. 0. 1. The discussion was made to find out the reason of CMT＇s successful injection.

关 键 词：堆芯补水箱 事故分析 AP1000 ATWS RELAP5 

分 类 号：TL364.1[核科学技术—核技术及应用]