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Getting Reliable Turbine Bypass System Performance in Cycling Power Plants
Recommendations to get reliable performance of turbine bypass systems are made. These are based on recent experiences in a number of cycling power stations. Results of an investigation into cracks in the pressure boundary downstream of turbine bypass systems in some power stations are described. Where failures occurred, these systems were behaving quite differently from the design intent or what the operators thought was going on at the turbine bypass system (TBS). The root causes were traced through analysis of failed components, reviews of plant layout and operation, analysis of DCS data, additional measurements at the site and finite element analysis. The primary contributors to such problems were the control algorithms, oversized spray-water valves, leaking spraywater lines, and thermal shocking of the system. Improper layout of the system is a contributor in some cases. All these, in varying degrees, contribute to the damage to the components and, over time, results in fatigue failures.
Revision Date: 5/8/2017
Tags: 221118 - Other Electric Power , CCI, High Performance Valve, Valve, Steam Generation
Severe Service Control Valves by Ory Selzer, CCI - Hot Topic Hour June 2, 2011
Ory Selzer, Valve Doctor - Power, Americas at CCI -Control Components, Inc, described the important requirements of severe service control valves, as they apply to steam and water.
Revision Date: 6/2/2011
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, CCI, Ball Valve, Valve, Erosion, Cavitation, Corrosion, Noise, Vibration, Flow Control
Severe Service Control Valves by Ory Selzer, CCI Valve - Hot Topic Hour June 2, 2011
Ory Selzer, Valve Doctor - Power, Americas at CCI -Control Components, Inc, described the important requirements of severe service control valves as they apply to steam and water.
Revision Date: 6/2/2011
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, CCI, Valve, Corrosion, Erosion, Vibration, Noise, Cavitation, Flow Control
Valves for Power Plant Steam and Water Applications Webinar - Hot Topic Hour June 2, 2011
The speakers addressed issues for the various valve applications in power plant steam and water systems. Password: hth484
Revision Date: 6/2/2011
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, Crane Energy Flow Solutions, CCI, Weir Valves & Controls, Valve, Corrosion, Erosion, Vibration, Noise, Cavitation, Flow Control