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首页> 外文会议>Proceedings of the ASME power conference 2009 >PREVENTING CONDENSER TUBE FAILURES THROUGH EFFECTIVE CLEANING AND NONDESTRUCTIVE TESTING
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PREVENTING CONDENSER TUBE FAILURES THROUGH EFFECTIVE CLEANING AND NONDESTRUCTIVE TESTING

机译：通过有效的清洁和非破坏性的测试来防止冷凝器管故障

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Generating companies lose hundreds of millions of dollars annually to problems related to condenser and heat exchanger fouling, corrosion and tube leaks. In fact, the Condenser Tube Failure Control Program of Electric Power Research Institute (EPRI, Matthews, J.) disclosed that condenser tube failures contributed to almost 25,000 outages nationwide during a recent four year period and continue to be one of the most pressing issues related to plant output and availability.rnTo adequately prevent condenser tube failures, effective condenser tube cleaning and nondestructive testing must be performed. Effective tube cleaning should ideally remove all deposits, leaving only the cleanest metal surface. Once tubes are free of fouling deposits, multi-frequency eddy current testing should be used to establish the overall integrity of condenser tubes. Plugging is recommended for the tubes with poor integrity that put condenser reliability at risk. If tube failures do occur, advances in tracer gas leak detection, specifically those using sulfur hexafluoride and helium, can be used to quickly locate sources of circulating water tube leakage and return the unit to reliable operation.rnThis paper will examine implications of condenser tube fouling and failure, and the available nondestructive technologies for their prevention and correction.
机译：发电公司每年因冷凝器和热交换器结垢，腐蚀和管道泄漏等问题而损失数亿美元。实际上，电力研究所的冷凝器管故障控制程序（EPRI，Matthews，J.）披露，冷凝器管故障在最近四年中导致全国近25,000次停电，并且仍然是与之相关的最紧迫的问题之一为了充分防止冷凝器管发生故障，必须进行有效的冷凝器管清洁和无损检测。有效的管道清洁理想上应清除所有沉积物，仅保留最清洁的金属表面。一旦管中没有积垢，应使用多频涡流测试来确定冷凝器管的整体完整性。建议对完整性较差的管子进行堵塞，从而使冷凝器的可靠性受到威胁。如果确实发生管子故障，可以使用示踪剂气体泄漏检测技术的进步，特别是使用六氟化硫和氦气的示踪剂气体检测技术，可以快速找到循环水管泄漏的来源并使设备恢复可靠运行。和故障，以及可用的无损技术进行预防和纠正。

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