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SECTION 2.0:PROJECT DESCRIPTION <br /> • Monitoring controlled plant equipment and process parameters and delivery of this <br /> information to plant operators <br /> • Providing control displays (printed logs, LCD video monitors) for signals generated <br /> within the system or received from I/O <br /> • Providing consolidated plant process status information through displays presented in a <br /> timely and meaningful manner <br /> • Providing alarms for out-of-limit parameters or parameter trends, displaying on alarm <br /> video monitors(s),and recording on an alarm log printer <br /> • Providing storage and retrieval of historical data <br /> • Provide an interface with"packaged" equipment (e.g.water treatment system,PLCs) <br /> The DCS will be a redundant microprocessor-based system and will consist of the following <br /> major components: <br /> • PC-based operator consoles with LCD video monitors <br /> • 1/0 cabinets <br /> • Historical data unit <br /> • Printers <br /> • Data links to the combustion turbine and steam turbine control systems <br /> The DCS will have a functionally distributed architecture allowing integration of <br /> balance-of-plant equipment that may be controlled locally via a programmable logic <br /> controller. <br /> The DCS will interface with the control systems furnished by the CTG supplier to provide <br /> remote control capabilities, as well as data acquisition, annunciation, and historical storage <br /> of turbine and generator operating information. <br /> The system will be designed with sufficient redundancy to preclude a single device failure <br /> from significantly affecting overall plant control and operation. This also will allow critical <br /> control and safety systems to have redundancy of controls, as well as an uninterruptible <br /> power source. <br /> As part of the quality control program, daily operator logs will be available for review to <br /> determine the status of the operating equipment. <br /> 2.1.15.4 Cathodic Protection <br /> The cathodic protection system will be designed to control the electrochemical corrosion of <br /> designated metal piping buried in the soil. Depending upon the corrosion potential and the <br /> site soils,either passive or impressed current cathodic protection will be provided. <br /> 2.1.15.5 Service Air <br /> The service air system will supply compressed air to hose connections for general plant use. <br /> Service air headers will be routed to hose connections located at various points throughout <br /> the facility. <br /> SACI371322I082340003(LEC_2.0_PROJECT_DESC.DOC) 2-31 <br />