摘要
对球床模块式高温气冷堆(HTR-PM)而言,进气事故是高温气冷堆事故分析中重点关注的类型之一。在HTR-PM进气事故中,热气导管双端断裂(DEGB)事故尽管发生概率极低,由于其严重的事故后果仍引起了研究者的大量关注。针对HTR-PM热气导管双端断裂事故,本文利用高温气冷堆专用系统分析程序TINTE-TIIXUW,详细分析了稳定自然循环建立后堆芯及底反射层的氧化情况。结果表明,在保守假设条件下,事故后144 h,燃料最高温度不会超过设计限值,燃料包覆颗粒不会发生裸露,底反射层也不会因氧化发生失效。
For the 200 MWe high-temperature gas-cooled reactor pebble-bed module (HTR-PM), the air-ingress accident is one of the important types of accident analysis. In air-ingress accidents, even though the probability of the double-ended guillotine break (DEGB) of horizontal gas duct is extremely small, yet it has been paid much attention because of the serious consequences. This paper simulated the DEGB of the horizontal coaxial gas duct of the HTR-PM by using the system analysis software TINTE-TIIXUW. Graphite oxidation of the core and bottom reflector was analyzed in details after the natural circulation was set up. Under the conservative conditions, the simulation results show that the maximum temperature of fuel wouldn't exceed the design limit value, the fuel particles wouldn't be exposed and the bottom reflector wouldn't fail due to oxidation.
作者
徐伟
李云龙
石磊
XU Wei;LI Yunlong;SHI Lei(China Nuclear Power Engineering Co.,Ltd.Zhengzhou Branch,Zhengzhou of Henan Prov.,450000,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China)
出处
《核科学与工程》
CAS
CSCD
北大核心
2019年第2期274-281,共8页
Nuclear Science and Engineering
基金
国家重大科技专项经费资助项目(ZX069)
