大亚湾核电站小支管振动测量结果分析评定

大亚湾核电站在运行中,有部分辅助系统的小支管(管径不大于5.08cm)的振动较大,并有少数小支管出现振裂的情况,给核电站的安全运行带来不利影响.在大亚湾核电站十年安全审评时对辅助给水系统、安全壳喷淋系统、反应堆换料水池和乏燃料水池冷却和处理系统、化学和容积控制系统、反应堆硼和水补给系统、余热排出系统、安全注入系统和设备冷却水系统的潜在敏感管进行了现场振动测量.本文按相关要求对测量结果进行了分析评定,给出敏感管清单及改造建议.

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.