秦山二期核电站环形燃料堆芯卡轴及弹棒事故分析  

Analysis of Locked-rotor Accident and Rod Ejection Accident for Qinshan Phase Ⅱ Nuclear Power Plant with Annular Fuel

作　　者：张毅[1] 季松涛[1] ZHANG Yi JI Song-tao(China Institute of Atomic Energy, P. O. Box 275-64, Beijing 102413, China)

机构地区：[1]中国原子能科学研究院反应堆工程技术研究部,北京102413

出　　处：《原子能科学技术》2016年第11期1967-1971,共5页Atomic Energy Science and Technology

摘　　要：环形燃料是一种采用双层包壳和环形芯块内外冷却的新型压水堆燃料,与传统棒状燃料相比,双包壳结构有效增加了燃料传热面积和减薄了芯块厚度,使其在事故工况下具有更好的安全性能。以秦山二期核电站作为参考电站,建立了装载环形燃料的核电站计算模型,研究在卡轴事故和弹棒事故下采用环形燃料的核电站的响应,并与相应工况下棒状燃料堆芯的计算结果比较。结果表明,与棒状燃料相比,核电站在采用环形燃料后安全裕度有明显的提高。The internally and externally cooled annular fuel is a new PWR fuel which consists of two cladding and annular pellets.Compared with traditional solid fuels,the annular fuel has more safety performance during accident conditions due to the enhanced heat transfer area of the fuel and reduced thickness of annular pellets.The locked-rotor accident and the rod ejection accident were analyzed to confirm the response of the plant for Qinshan Phase Ⅱ Nuclear Power Plant as the reference plant loading with annular fuel.Compared with solid fuels,it is shown that the safety margin of the plant loaded with the annular fuel is improved during accident conditions.

关 键 词：环形燃料 核电站 事故分析 

分 类 号：TL364.4[核科学技术—核技术及应用]