利用涡流检测技术,对某核电站泄漏的热交换器用传热钛管进行抽样检测;结合其工作环境,分析其失效形式.结果表明,热交换器内壁防腐橡胶脱落导致异物堵塞和冲刷腐蚀是导致钛管失效的主因;海水流速过高和附近海域泥砂含量过大是导致钛管失效的根本原因.最后对该电厂钛管的防护提出解决方案. By using eddy current testing technology, the heat exchanger which leaked from a nuclear power station was sampled by heat transfer titanium tube, and its failure mode was analyzed according to its working environment.The results showed that the clogging of the inner wall of the heat exchanger and the corrosion and corrosion of the corrosion- The main reason of tube failure is that the excessive flow rate of seawater and the excessive sediment content in the sea area are the root causes of the failure of titanium tube.At last, the solution of titanium tube protection in this power plant is put forward.