蒸汽发生器U型传热管在弯管段设有防振条，用于支撑管束并避免不可接受的流致振动或微振动引发的磨损。介绍了55/19B型蒸汽发生器传热管防振条易出现的偏移、错位、扭转等问题，并针对这些问题，利用涡流检测方法对相应的防振条信号进行分析，并得出各涡流信号的特点。结果表明，通过涡流检测方法，可检测出蒸汽发生器传热管防振条的偏移、错位、扭转。

U type of steam generator heat transfer tube in a bend pipe is provided with an anti-vibration strip and tube bundle support for avoiding unacceptable flow induced vibration or micro vibration caused by wear and tear. The 55/19B type steam generator heat transfer tube of anti-vibration bars appears to induce offset and dislocation torsion problem. In order to solve these problems, eddy current testing method was used to analyze the corresponding anti-vibration signal and the characteristics of the eddy current signal were obtained. Results show that, the eddy current testing method can detect the offset of steam generator tube of anti-vibration bars, the dislocation and the torsion.