氦质谱技术在大亚湾核电站凝汽器管束泄漏检测中的应用

Helium Mass Spectometry Used in Daya Bay Nuclear Power Plant forLeakage Detection of Condenser Tubes

在电站凝汽器的故障中，管束泄漏占有相当大的比例。作者根据大亚湾核电站１号机凝汽器在商业运行前后数次管束检漏的经验，介绍氦质谱技术在电站凝汽器管束检漏中的实际应用。实践表明，氦质谱技术的特点是快速、精确、可靠。特别是对于拥有多台机组的大型电站，应用氦质谱技术可以大大提高凝汽器管束的检漏效率。

Abstract Tube leakages play a considerable role among condenser failures in powerplants. Based on practical experience gained in dondenser leakage detectionefforts prior to and following commercial commissioning of Daya Bay NuclearPower Plant's No. 1 generating set, the autors describe the practical applicationof Helium mass spectrometry to leak detection of condenser tubes in powerplants. Practice shows that Helium mass spectrometry is featured by its speediness, accuracy and reliability. It is especially suited for power plants, wherewiththe efficiency of condenser tube leakage detection can considerably be increased.