The method named fault tree analysis ( fta ) is shown . a new method could integrate the virtue of fmea and fta . the drop of vacuum about condenser is analyzed as a typical accident to summarize the approaches to the method 最后本文对电力设备故障分析的未来发展趋势和前景进行了展望，结合国际工程界所重视的故障树分析方法，提出故障树和故障模式的联合分析法必将成为故障分析的有力工具，并以凝汽器真空下降这一典型故障为例，总结了这种方法对汽轮机分析的基本步骤和注意事项。
