中国先进研究堆堵流事故分析  

Flow Blockage Accident Analysis for China Advanced Research Reactor

作　　者：刘天才[1] 金华晋[1] 袁履正[1] 

机构地区：[1]中国原子能科学研究院反应堆工程研究设计所,北京102413

出　　处：《核动力工程》2006年第S2期32-35,44,共5页Nuclear Power Engineering

摘　　要：堵流事故是板状燃料研究堆发生概率相对较高的一种事故。本文进行CARR堵流事故分析时,假定额定功率运行下,1盒燃料组件的入口全部堵塞。用Relap5\Scdapsim\Mod3．2程序分析堵流事故时反应性、堆功率、压力、流量和温度等的变化,并分析发生堵流的标准燃料组件对周边燃料组件的影响。结果表明,发生堵流的燃料组件将烧毁,但不向相邻的组件扩展。CARR设计采取的安全措施可以把堵流事故后果控制在可接受范围之内。Flow blockage accident often happens in research reactors with plate-type fuel assemblies.In this paper,the flow blockage accident of China Advanced Research Reactor(CARR)is analyzed on the assumption that the inlet of one assembly is blocked when the reactor is operated at the rated power.The reactivity,reactor power,pressure,flowrate,temperature that is changed with time in the accident is calculated with Relap5/Scdapsim\Mod3.2.The effect of the blocked standard fuel assembly on the ambient fuel assemblies is also given.The results show that the blocked assembly will melt but it does not cause the burnout of the rest assemblies.It proves that this type of accident can be controlled within the limit by the safety measures for CARR.

关 键 词：中国先进研究堆 堵流事故 安全措施 

分 类 号：TL411[核科学技术—核技术及应用]