“燃料元件堆内瞬态行为试验研究”是“高性能燃料组件研究”计划中的重要研究课题之一,已被列为“九五”科研项目。目前,压水堆燃料研究经验表明,在稳态加深燃耗考验下元件不破损,但在变功率条件下元件可能发生破损。因此,要发展高性能元件,必须进行瞬态试验研究。压水堆燃料 The “Transient Behavior Test of Fuel Element Heaps” is one of the important research topics in the “Research on High Performance Fuel Components” and has been classified as “Ninth Five-Year” research project. At present, the research experience of pressurized water reactor fuel shows that the components are not damaged under steady state deepening fuel consumption test, but the components may be damaged under changing power conditions. Therefore, to develop high-performance components, transient research must be conducted. Pressurized water reactor fuel