中国实验快堆非能动余热排出系统中非能动爆破片疲劳性能试验

Fatigue Experiment on Bursting Disk Device in Non-Active Heat Discharging System of Chinese Experimentation Fast Reactor

非能动余热排出系统是保证试验快堆安全工作的重要措施,爆破片是一种非能动超压泄放装置。本文对反复加载的疲劳载荷作用下的爆破片动作性能进行了实验研究,载荷应力为80%爆破片标定爆破压力,载荷循环次数超过1×105,疲劳试验前后的爆破片动作压力差别小于1.5%,说明余热排出系统中选用的爆破片耐疲劳性能优异,可以稳定保证非能动余热排出系统的可靠工作。

Passive residual heat removal system is very important for faster reactors to ensure its safety. Bursting disk is one passive discharging device under over-pressure. Action performance of the bursting disk is carried out by adding fatigue loads repeatedly in this paper. The load stress is 80% of the nominal bursting pressure of the bursting disk, and the load cycles is over 10^5. The experimental result shows that the action pressure difference before and after the fatigue experiment of the bursting disk is less than 1.5%, which indicates that the fatigue resistance of the bursting disk for the passive residual heat removal system is excellent, and it can ensure the reliable work of the passive system.