It was explained how to calculate the steam generator tube plugging criteria, and the calculating diagram was demonstrated as reference of horizontal steam generator of Tianwan nuclear power plant.

• 摘要主要介绍蒸汽发生器传热管通过涡流检查发现缺陷后堵管准则的确定方法，并以田湾核电站卧式蒸汽发生器为例说明堵管准则的计算流程。