Some ways for condenser tube leak detection were analyzed. An on line system using tracing gas to detect and locate condenser leaks was brought forward. SF 6 gas was selected as tracing gas and injected into condenser tubes by liquid gas ejector. If condenser tubes had some leaks, the tracing gas would enter vacuum and be discharged and measured. Main parts of the detection system were gas injection, leak detection and location, and automatic control systems. Its applications in power plants showed the id...
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