燃料元件是反应堆的核心部件,对反应堆安全稳定运行非常重要,由于运行条件的苛刻,燃料元件包壳的材料性能在运行过程中降低,当发生LOCA时,高温氧化和吸氢脆化使得包壳的完整性受到严峻的考验。“失水情况下国产新锆合金安全性能研究”课题的研究目标是获得LOCA工况下国产新锆合金高温氧化、鼓胀和爆破的相关性能试验数据,评价现行LOCA准则的适用性,为 The fuel element is the core component of the reactor and is very important to the safe and stable operation of the reactor. Due to the harsh operating conditions, the material properties of the fuel element cladding decrease during operation. In the case of LOCA, high temperature oxidation and hydrogen embrittlement cause the cladding The integrity of the subject is harsh test. “Research on the Safety Performance of Domestic New Zirconium Alloy Under Water Loss” The research goal of the subject is to obtain the relevant performance test data of high temperature oxidation, bulging and blasting of the domestic new zirconium alloy under LOCA condition, and to evaluate the applicability of the current LOCA criterion as