Different Conditions Analysis on Steam Hammer Calculation of Main Steam System in Nuclear Power Plants Conventional Island

In this paper nuclear power plants conventional island main steam system transient calculation under different conditions were analyzed. Through qualitative analysis and simulation results, obtains the steam hammer force of main steam system under different conditions. By comparing steam hammer loads of main steam valve in different conditions, get the maximum load condition. This paper mainly provides the way to choose main steam system transient calculation conditions.