【摘要】 在地震或者冷却剂丧失事故(LOCA)工况下,反应堆内燃料组件之间会产生动态的碰撞和冲击。地震加LOCA下的燃料组件安全分析研究的目的,是对极限事故工况下的燃料组件整体性能进行分析评估,以验证燃料组件设计是否满足相关设计准则的要求。地震加LOCA下的燃料组件安全分析研究建立在燃料组件的多项分析模型基础上,包括详细模型、集中质量模型、碰撞模型等。在分析模型基础上,根据某电厂在地震以及LOCA下的载荷输入条件开展的燃料组件安全分析表明,该电厂的燃料组件设计能够满足设计准则的要求。地震加LOCA下的燃料组件安全分析方法研究可为系统、全面地建立燃料组件安全评估体系提供理论指导。更多还原

【Abstract】 Under seismic or LOCA condition,dynamic collision and impact will occur between the the adjacent fuel assemblies located in the reactor core.The object of safety analysis of fuel assembly for com-bined seismic and loss-of-coolant accident is to evaluate the performance of fuel assembly under limiting condition,and to demonstrate the satisfaction of related design criteria.The safety analysis is based on sev-eral fuel assembly models,including the detailed model,lumped mass model and impact model.According to the analysis results for a certain plant,the fuel assembly in this plant can meet all the design criteria related to fuel assembly performance under combined seismic and LOCA condition.The research of safety analysis method for fuel assembly under seismic and LOCA condition can provide theoretic guidance for the setup of fuel assembly safety evaluation system.更多还原