Research on the Reliability of the Charging Circuit of the Chemical Capacity System in Nuclear Power Plants
Purpose:The study aims to analyze the reliability of the charging circuit in the chemical capacity system of nuclear power plants,predict equipment failure rates,and propose improvement measures to improve system stability and safety.Method:A fault tree model was constructed to systematically analyze the potential fault causes of the sub functions during the charging process.Simulation software was used to simulate various fault scenarios,and reactor performance was tested under different operating powers,as well as the failure rates of capacity control,valves,and charging pumps.Result:The experimental results show that at a power of 600MW and a coolant flow rate of about 21000m 3/h,the coolant pressure drop reaches the maximum value of 27.6kPa.The failure rate of capacity control equipment increases rapidly with running time,reaching 0.3 after 90 hours of use;The early failure risk of the charging pump is high,and the failure rate after long-term use is close to 0.2.Conclusion:The reliability of the charging circuit in the chemical capacity system of nuclear power plants is affected by the failure rate of multiple components.By regularly monitoring and maintaining key components,strengthening pipeline cleaning and maintenance,and backup power supply,the failure rate can be significantly reduced.
nuclear power plantchemical capacity systemupcharge circuitfault tree
万方数据
维普
