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The following Titles Reflect the Requested Application Sequencing
Valve Considerations when repowering a coal plant to use a gas turbine
Steve Brown of Crane analyzes valve requirements when repowering from coal to gas .Both cast and forged valves are important for the power industry with forged valves becoming more preferred in the most demanding applications and cast valves still comprising the balance of power plant valve installations.
Revision Date: 4/19/2017
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, 221113 - Nuclear Electric Power Generation * , Crane, Ball Valve, Actuator, High Performance Valve, Steam Cycle
Steam atteperator valve and actuator selection
AEP replaced the existing attemperator valves and actuators with Koso valves and Rexa Electraulic (electro-hydraulic) actuators, giving rangeability and control down to 0.5 percent open.
Revision Date: 3/23/2017
Tags: 221112 - Fossil Fuel 化石燃料, 221112 - Fossil Fuel 化石燃料, 221113 - Nuclear Electric Power Generation * , High Performance Valve, Actuator, Steam Cycle
BWR auxiliary feedwater valves in OTSG
Air-operated valves LCV-4025 and LCV-4026 control steam generator level for the “A” OTSG, and LCV-4007 and LCV-4009 for the “B” OTSG. The level control system for each valve receives a level input signal from a startup range OTSG level transmitter in the essential controls and instrumentation (ECI) system. This signal is compared with a level setpoint, and the resultant error signal modulates the control valve using a proportionalplus- integral controller. Manual control is available in both the main and auxiliary control room. Parallel flowpaths (one from a motor-driven pump, one from the turbine-driven pump) and redundant instrumentation and control power supplies for the level control valves ensure flow to each OTSG. Motor-operated block valves (V-14A and V-31B in the “A” OTSG supply, V-37A and V-20B in the “B” OTSG supply) provide redundant feedwater isolation of an OTSG. The turbine-driven and motor-driven pump discharge lines combine to supply the auxiliary feed ring in each OTSG.
Revision Date: 3/23/2017
Tags: 221113 - Nuclear Electric Power Generation * , High Performance Valve, Actuator, Steam Cycle
Power steam cycle control valves -Trimteck
Power point presentation with diagrammatic locations of valves in various steps in the steam cycle. E.g. main steam cycle . Superheater valves: Maintain boiler pressure below 70%; and modulate pressure to the turbine. Main Steam Attemperator Valve: Controls HP Turbine Temperature at 15% Load Reheater Attemperator Valve: Controls LP Turbine Temperature at 15% Load . Turbine Bypass Valve 6. Superheater Bypass
Revision Date: 3/23/2017
Tags: 221112 - Fossil Fuel 化石燃料, 221113 - Nuclear Electric Power Generation * , 221112 - Fossil Fuel 化石燃料, Trimteck, Ball Valve, Gate Valve, Actuator, High Performance Valve, Steam Cycle
Tutorial on Steam Turbine Drivers for Fossil and Nuclear Feed Pump Applications
This paper presents an overview of the operation and design of steam turbines used for driving reactor and boiler feed pumps.
Revision Date: 9/8/2014
Tags: 221112 - Fossil Fuel 化石燃料, 221113 - Nuclear Electric Power Generation * , Siemens, Steam Turbine, Boiler Feedwater Pump, Boiler Feedwater Treatment
Costs of gas turbines compared to other options by DOE in 2013
Excerpt from "Updated Capital Cost Estimates for Utility Scale Electricity Generating Plants" issued by U.S. Energy Information Administration in April 2013.
Revision Date: 12/16/2013
Tags: 221112 - Fossil Fuel 化石燃料, 221113 - Nuclear Electric Power Generation * , 221118 - Other Electric Power , 221111 - Hydroelectric Power Generation 水力发电, Cost