Analysis and Evaluation for Little Branch of Daya Bay Nuclear Power Station Based on Vibration Test Result

During the operation of Daya Bay Nulcear Power Station,some little branches of secondary system were with great vibration and even some of them cracked due to the great vibration that may cause some effect on the safety of the power station.This paper performed analysis and evaluation to the eight sys-tems of Daya Bay Nuclear Power Station based on the vibration test results from the examination of the safety during ten years,and the list of the sensitive piping and suggestion for modification were presented based on the analysis results.