凝汽器作为核电厂二、三回路热量交换设备，对机组稳定运行起着至关重要的作用。为保障凝汽器安全高效运行，国内核电厂均在大修期间安排对凝汽器传热管进行涡流专项检查。本文对某核电机组相邻两次凝汽器换热管涡流检测结果进行了对比分析，发现该机组冷凝器换热管主要缺陷形式为凹陷，整体状态较为稳定，但凹陷管的分布位置存在一定倾向性。%As the key equipment of the second loop, the reliability of condenser plays a vital role to operation of the power plant. To protect the safety and efficient of the unit, nuclear power plants are scheduled a special inspection of the condenser tube during the outage. Eddy current inspection is the common means. In this paper, ET inspection results have been compared and analyzed. We find that dent is dominated among all kinds of defects. The condition of the condenser is stable.
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