The paper firstly points out the problem that the operation of the industrial water pump in a power plant is tripped due to the fault of the control circuit

resulting in a series of abnormal events such as industrial water system outage

air compressor system outage

circulating pump bearing temperature is high and so on. And then it analyzes the problems existing in the design of industrial water pump control circuit and the influence of industrial water system outage on other systems and equipment. At last it puts forward corresponding treatments and suggestions.