Appendix E-2.c.i Energy Plan 2004-2013 Follow-up Studies and ...

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Re-powering Study for the Northport and Port Jefferson Power Stations Appendix VII Northport Capital Cost Estimate Descriptions • Water injection skid • On-line and off-line compressor water wash system • Fire protection (CO2) and fire detection systems • Lube oil system • Static exciter • Control system with control options for combined cycle application, e.g. temperature matching, external speed set point and high steam temperature protection • Vibration and temperature monitoring • Batteries and battery charger • TCA cooler to cool a main compressor bleed stream of compressed air to be used for power turbine blade cooling. Waste heat from this cooler is used to heat incoming fuel gas A1 Combustion Turbine Balance of Plant Each combustion turbine balance of plant includes: • Combustion turbine foundation • Step up transformers, 13.8 to 345 kV (one for each CT) • Auxiliary transformers (one for each CT) • Generator breakers (one for each CT) • High side gas insulated breakers • Generator hydrogen and CO system 2 • Associated electrical connections, metering and protection • Oily water collection system • Wash water drain tank and pumps • Lube oil collection system • CTG equipment closed cycle cooling water system including a 14 cell fin-fan cooler B1 Existing Steam Turbine Upgrades The existing steam turbine generator and associated auxiliary equipment will be reused. Normal maintenance and overhaul cost for the steam turbine and other existing equipment is assumed to be part of the plants maintenance budget. The following steam turbine modifications are included in the repowering project cost estimate: • Replace HP and IP turbine blades and diaphragms as required to improve performance • Generator rewind • New Mark VI steam turbine controls • New static excitation system March 30, 2009 244
• Disconnect and cap existing extraction steam piping. • Connect an LP steam admission to the LP turbines B1 Steam Turbine Balance of Plant Re-powering Study for the Northport and Port Jefferson Power Stations Appendix VII Northport Capital Cost Estimate Descriptions In general the existing steam turbine balance of plant equipment will be reused including: • Steam turbine foundation and pedestal • Lube oil system • Gland Seal and Exhaust system • Condenser air removal system • Condensate system (except pumps) • Hydrogen system • CO system 2 • Nitrogen system • Generator synchronizing • Generator and transformer protection • Fire protection for steam turbine area • Closed cycle cooling water system including heat exchangers and pumps The following steam turbine balance of plant modifications are included in the repowering project cost estimate: • New cascading type steam turbine bypass system to the existing condenser • The condenser will be modified by removing the LP feedwater heaters and installing steam dump lines for the new turbine bypass system • New condensate pumps • New main step-up transformer • High side gas insulated breaker • The existing auxiliary transformer will be retired C1 HRSG Vendor Package A heat recovery steam generator (HRSG) with integral deaerator, CO catalyst, and selective catalytic reduction (SCR) is provided to accept the exhaust gases from each combustion turbine. The steam cycle design is a triple pressure, reheat cycle with throttle steam conditions designed to accommodate the requirements of the existing steam turbine operating at its new load point. C2 HRSG Balance of Plant The following items are included in the HRSG balance of plant: March 30, 2009 245
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Electric Resource Plan 2010 - 2020
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March 30, 2009 Re-powering Study fo
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Northport Repower Study Option 4 2x
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Re-powering Study for the Northport
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• Auxiliary Boiler System • All
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1 2 3 4 5 6 7 8 9 10 A SUPERHEATER
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1 2 3 4 5 6 7 8 9 10 A 0304 PID-03-
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1 2 3 4 5 6 7 8 9 10 A 0341 PID-03-
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1 2 3 4 5 6 7 8 9 10 A 0368 PID-03-
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1 2 3 4 5 6 7 8 9 10 A 0831 PID-08-
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1 2 3 4 5 6 7 8 9 10 A 0427 PID-04-
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1 2 3 4 5 6 7 8 9 10 A FGS FGS FGS
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1 2 3 4 5 6 7 8 9 10 A 0823 PID-08-
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1 2 3 4 5 6 7 8 9 10 0904 PID-09-09
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1 2 3 4 5 6 7 8 9 10 A FROM AIR COM
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1 2 3 4 5 6 7 8 9 10 A REVISION DES
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Page 58 and 59: 1 2 3 4 5 6 7 8 9 10 A FROM HRSG 1A
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Page 76 and 77: 1 2 3 4 5 6 7 8 9 10 CCW VSH 0132A
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Page 86 and 87: Re-powering Study for the Northport
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Page 90 and 91: Accessory Electric Plant Re-powerin
Page 92 and 93: Fuel and Feed Re-powering Study for
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Page 110 and 111: • Grounding and lightning protect
Page 114 and 115: • Combustion turbine foundation
Page 116 and 117: D3 Fuel Oil facilities Re-powering
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Appendix E-2.c.i Energy Plan 2004-2013 Follow-up Studies and ...

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