660 Mw Startup

Topics: Boiler, Valve, Gate valve Pages: 10 (2069 words) Published: June 27, 2013
660 MW WARM STARTUP PROCEDURES
WARM START UP AFTER 36 HRS SHUTDOWN AND HPC TEMPERATURE 340 C AND IPC 320 C WITH BOILER PR 1 TO 30 KSC

|NO |ACTIVITY SEQUENCE | |1 |All HT, LT SWGR ,Battery chargers are charged | |2 |Raw water pump in service & Clarified water treatment plant in service.- Pr. 2.5 ksc | |3 |SACW pump in Service- Pr. 4.5 ksc | |4 |Instrument and Service Air Compressors in service- Pr. 7 ksc | |5 |Service water pump in service -Pr. 6 ksc | |6 |CW pumps in service- Pr. 2 ksc, All Condenser pass charged., CT fan in service | |7 |TG-ECW , SG-ECW & ACW pumps in service – Pr.7, 10 & 4 ksc | |9 |Generator PSW System in service- Tank level>500mm, disch pr. 7.5 KSC. Stator water flow 110 -120 T/hr.Winding DP is 1.4 to 2.2 | | |KSC. Conductivity 2.5-5 micro siemens/cm. | |10 |Gen Filling with Air & Gen Seal Oil system charging Pp Disch Pr 10 KSC, Seal oil to Hydrogen DP is 0.6 to 0.9 KSC | |11 |TG Lub Oil pump,& JOP in sevice- Lub Oil pr 1.2 ksc, JOP pr 80 ksc, Lub oil Temp 40-42 0C,DP across plate filter (150 to 300 mm) & | | |Duplex filter are normal | |12 |Baring Gear in service- Barring Gear motor current 35 to 40 Amps. | | |Shaft eccentricity is ≤ 0.04 mm. Turbine speed: 1.1 RPM | | |Control Fluid pump in service- Pr 50 ksc , temp 48-50 0C, | |13 |Aux PRDS hdr Charging- Pr.16 ksc, Temp HT-310 0C, LT-210 0C | |14 |Gen CO2 & H2 Filling- H2 pr.in Gen. is 3.8-4.0 ksc , purity > 99% | |15 |Hot Well filling & CEP in service- Hotwell level 400 mm, disch Pr 30 ksc, Dea level Control station &LP heater water side lineup, | | |CPU in service | |16 |Dea. Filling & FST heating , level 2000 mm, Temp 105 0C | |17 |MDBFP in service - Scoop 15-18 % & R/C open, ,Chemical Dozing system in service ,FRS & HPH water side lineup | |18 |Condenser Vacuum pulling & Turbine seal steam charging- Vacuum Pumps (02) are in service and Third pump is in stand by mode, Seal | | |steam Pr. 1.05 to 1.25 KSC. Seal steam temp 160 to 180 ºC in cold header. Spray system is lined up for desuperheater. Aux steam HT | | |header pressure is 16 KSC and temp is 310 ºC. Drain valves of Hot and Cold headers of seal steam are open (05 nos.) Cond Vacu < 0.28| | |ksc, LP turbine exhaust hood spray line up | |19 |Boiler Filling- Open all vents of Boiler & close Eco,WW & intermediate...
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