WANG Ke, YOU Yu, SANG Qian feng

（China Guangdong Nuclear Power Engineer Co.Ltd., Shenzhen 518000, China）

 

 

Abstract: Aiming at the problem that flushing cost long time of Steam turbine control oil system by conventional flushing method, the high pressure pulse flushing method was proposed according to the analysis on some conventional flushing methods and the characteristics of the Yangjiang nuclear power plant. The accumulator was used to flush the pipelines, the volume variation of accumulator and the largest velocity in the pipe were calculated based on the related theory and engineering experience. The preparatory work and the implementation process was summarized, the problem of low efficiency of conventional flushing method was solved. The results indicate that the flushing time can be shortened to 5~10 days and better flushing effectcan can be obtained by the high pressure pulse flashing method which has good prospect and value to be expaded.

Key words: control oil; flushing; high pressure; pulse