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SECTION 2.0:PROJECT DESCRIPTION <br /> 2.1.6 Major Generating Facility Components <br /> The following paragraphs describe the major components of the generating facility. <br /> 2.1.6.1 Combustion Turbine Generators <br /> Thermal energy will be produced in the CTG through the combustion of natural gas,which <br /> will be converted into mechanical energy required to drive the combustion turbine <br /> compressor and electric generator. The CTG system will consist of a CTG with supporting <br /> systems and associated auxiliary equipment. The Rapid Response GE Energy Frame 7FA <br /> CTG uses dry low NOX combustors to lower NOX emissions. <br /> The CTG will be equipped with the following required accessories to provide safe and <br /> reliable operation: <br /> • Inlet air filters and evaporative cooler <br /> • Metal acoustical enclosure <br /> • Lube oil system for the combustion turbine and generator <br /> • Dry low NOX combustion system <br /> • Compressor wash system—both online and offline <br /> • Fire detection and protection system(using carbon dioxide) <br /> • Fuel gas system,including flow meter, strainer,and duplex filter <br /> • Starter system <br /> • Turbine controls <br /> • Hydrogen-cooled, synchronous generator <br /> • Generator controls,protection,excitation,power system stabilizer, and automatic <br /> generation control (AGC) <br /> The CTG and accessory equipment will be contained in a metal acoustical enclosure as <br /> required to meet sound noise ordinances. <br /> 2.1.6.2 Heat Recovery Steam Generator <br /> The HRSG will transfer heat from the exhaust gases of the CTG to the feedwater,which will <br /> become steam. The HRSG will be a triple-pressure,reheat,natural circulation unit equipped <br /> with inlet and outlet ductwork, duct burners,insulation,lagging, and an exhaust stack. <br /> Major heat transfer components of the HRSG will include one LP economizer, one LP <br /> evaporator,one LP drum, one LP superheater,two IP economizers,one IP evaporator,one <br /> IP drum,two IP superheaters,two HP economizers,one HP evaporator, one HP drum,and <br /> two HP superheaters and reheat sections. The LP economizer will receive condensate from <br /> the condenser hot well via the condensate pumps. The LP economizer will be the final heat <br /> transfer section to receive heat from the combustion gases before they are exhausted to the <br /> atmosphere. <br /> Condensate will be directed through the LP economizer and into the LP drum. The boiler <br /> HP and IP feed pumps, drawing suction from the LP drum,will provide additional pressure <br /> to serve the HP and IP sections of the HRSG. Similarly,as described above,the LP, IP, and <br /> HP steam will be produced for supply to the steam turbine. <br /> SACI371322I082340003(LEC_2.0_PROJECT_DESC.DOC) 2-15 <br />