Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
Page 14
Page 15
Page 16
Page 17
Page 18
Page 19
Page 20
Page 21
Page 22
Page 23
Page 24
Page 25
Page 26
Page 27
Page 28
Page 29
Page 30
Page 31
Page 32
Page 33
Page 34
Page 35
Page 36
Page 37
Page 38
12 I WWW.CONCO.NET Air in-leakage negatively impacts plant performance while tube leaks can cause forced outages costing plants thousands in maintenance and lost productivity. Using advanced tracer gas leak detection technology Conco technicians can quickly locate sources of leaks within your plant. Conco has been an innovator and leading provider of leak detection services for over 30 years and offers both helium and SF6 tracer gas technology. Conco crews can detect n Condenser air in-leakage n Condenser tube leakage n Sources of dissolved oxygen n Stator water system leakage n Main generator leakage Depending on leak characteristics a determination is made whether to mobilize with the helium mass spectrometer system the state- of-the-art Conco Fluorotracer system or both. LEAK DETECTION SERVICES Increase plant performance and help put a stop to forced outages... locate and repair air inleakage and tube leaks today. Locating Sources of Air In-leakage Conco pioneered the use of tracer gas technology to locate air in-leakage in power plants. Since 1978 Conco has restored performance to thousands of plants worldwide using exclusive technology. Our technicians are the best in the business with an average of 23 years experience in the field. Theyre knowledgeable of all the components within your vacuum boundary. A typical 500 MW unit can be fully tested in one shift with no need for plant interruption. Our technicians are fully compliant with fossil and nuclear testing procedures and are confined space first aid and CPR trained. During a recent four-year period condensers were responsible for more than 25000 forced and scheduled outages with condenser tube leaks being the primary source of generation loss. Locating CirculatingWater Tube Leaks Circulating water leaks can result from penetrations through the tube walls from joints between the tubes and tubesheet or from other penetrations between the water box and condenser shell. Contaminants in the circulating water change condensate chemistry which can cause boiler or steam generator corrosion. Poor water chemistry can also cause stress corrosion cracking of turbine components. Our leak detection specializes in finding tube leaks within main condensers. Our methodical approach using either helium or SF6 tracer gases ensures that we find even the smallest leaks. Chart Recording of a Typical Leak Response Conco Technician with SF6 Pack Unit Checking for Sources of Air In-leakage Air in-leakage can negatively impact your units efficiency and also increase dissolved oxygen levels in your hotwell which can lead to corrosion.