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

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 10⁵.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.