Magnet-related failure experiences at the SPring-8 storage ring

High operation rate is required for synchrotron radiation sources for their many users. Keeping high operation rate, we need to maintain the equipments continually and raise the reliability of each component. To raise the reliability, it is important to clarify the cause of failure of equipments. In this paper, we describe the major magnet-related failure experiences of the past six years for the SPring-8 storage ring: failure of flow switch, dissolution of copper in water, and radiation damage of equipments.