Analysis of maximum pressure in VVER1000/V446 reactor containment for LOCA and MSLB

作     者：Sh. Sheykhi S. Talebi 

作者机构：Department of Energy Engineering and Physics Amirkabir University of Technology (Tehran Polytechnic) 424 HafezAvenue Tehran 15875-4413 Iran 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2017年第28卷第9期

页      面：109-118页

核心收录：

学科分类：08[工学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 

主　　题：压力分析 失水事故 反应堆 控制容积 最大能量 压力变化 模型应用 内部控制 

摘      要：The highest thermal-hydraulic pressure in the containment occurs when reactor coolant in the first loop and steam in the secondary loop discharge simultaneously,and when the maximum amount of energy from reactor unit enters to containment volume. In this paper, we investigate temperature and pressure variations in the VVER 1000 containment compartments owing to concurrent break in the pipelines of the primary and secondary loops. A two-phase, multicellular model is applied in the presence of non-condensable gases. Convection and conduction through the main heat structures inside the containment are also considered. The predicted results agree well with available data. Maximum values of pressure and temperature in the containment are then calculated and compared to the design values. If LOCA and MSLB occur simultaneously, the maximum pressure would exceed the design value and integrity of the containment would be threatened.