TURBINE ROLLING

COLD START UP

WARM START UP

HOT START UP

TURBINE ROLLINGMETAL TEMP < 250 C

METAL TEMP 250 C- 450 C

METAL TEMP 450 C

TURBINE ROLLING

MECHANICAL

EHC

TURBINE ROLLING

MECHANICAL - STARTING DEVICE & SPEEDER GEAR

EHC - SPEED LOOP - MANUAL / SGC

UNIT CONDITION

NO EQPT IN SERVICE

METAL TEMP < 120 c

OIL SCHEMESTART EOP CHARGING- STOPSTART AOP & OVEFSTART JOPOPEN GATE VALVE GEARINGTG ROTOR ON STGRESET FP GATE VALVE

OIL SCHEMECHARGE CONTROL OIL

CHARGE GOVERNING RACKCHARGE LP B/P RACK

CW SCHEMEOPEN DIS VALVE 10 %ISOLATE SUPPLYOPEN CONDENSER WB AIR VENTSTART ONE CWPCHARGE CW SCHEMECHARGE OIL COOLER, PHE,SEAL COOLER

ACW SCHEMEFILL ACW TANK

CHARGE ACW SCHEME BY GRAVITY

START ACW & ACWBP

DEAERATORFILL DEAERATOR

CHARGE AST HEADER

START ONE BFP & PUT IN RECIRCULATION

PREHEAT DEA & RAISE TEMP TO 80c

HOT WELLFILL HW WITH DM WATER

START CEP & PUT IN RECIRCULATION

CHARGE CONDENSATE SCHEME

HP B/P OIL SUPPLYSTART OSU PUMPS

SLOWLY CHARGE OIL LINE

ENSURE OPENING OF P&T LINE

SEALS

START OIL PUMPS OF MAW 10 & 50

START WARMING OF EJECTORS & SEALS

FEEDINGCHARGE FW UPTO FEED MANIFOLDSTART FEEDING AT 80 T/HrOPEN MS,HRH,CRH,B/P DRAINSLIGHT UP BOILER WITH 2 OBS AFTER DRUM LEVEL SIGHTEDDMT 90c . SURGING OF LEVEL.OPEN CBD TO CONTAIN DRUMLEVEL.CUTOUT 1 OB IF NECESSARY.

VACUUM RAISING

OPEN PILOT EJECTOR STEAM & AIR VALVE

START ONE GSEF

AT 100 mm of HG ADMIT SEALS

HP&LP B/P OPERATIONCUT IN 3rd OIL BURNEROPEN B/P 30% WHEN MS pr IS 5 K.sc & CHARGE REHEATERSBEFORE OPENING HP B/P CHECKSAFE DRUM LEVELOPENING OF BOILER STOP VALVESCLOSE STARTUP VENT

HP&LP B/P OPERATIONVAC IS STABLEFURTHER OPENING ACCORDING TO SH3 O/L pr RAISEOPEN LP B/P @ HRH pr 2 K.scRATE OF pr.RAISE MS- 1K.sc / 2 minHRH - 1K.sc / 4 min

FIXING PARAMETERSMETAL TEMP < 350c 50 k.sc & 350c 12k.sc &350cOTHERS, ADD 50c WITH MAX METAL TEMP. ACCORDINGLY CHOOSE PR

WARMING UP

START CVS WARMING UP AT 23k.sc & 250cCHECK K101&201 SWITCHED ONTEST VALVES&CVS OIL LINES OPENEHC &CRH NRV SLIDE VALVES MADE THROUGHTCV IN AUTO

WARMING UPBROUGHT ST.DEVICE TO ZEROOPEN MAL DRAINSGEN.TRIP IS RESETRESET TURBINECHECK TRIP OIL PR IS 5 k.scMIN TRIP OIL pr NEEDED IS 3.8 k.sc FOR SVs OPENING

WARMING UP

IF TRIP OIL PR IS BELOW 3.8 k.sc

i) ROTATE SFC FILTERS ii) CHECK LUB OIL O/L TEMP

IF IT IS NOT RAISING TRIP THE m/c AND RESET

WARMING UP

RAISE ST.DEVICE

ST UP OIL pr STARTS REDUCING

ESV STARTS OPEN AT 1.8 k.sc.IF NOT i) CHECK TEST VALVE IS OPENED ii)CHECK TRIP OIL pr IS ADEQUATE

WARMING UP

ESV OPENS AT 35% OF ST.DEVICECHECK OPENING BY LIMIT SWITCH & AT LOCALDURING WARMUP MS& HRH TEMP SHOULD DROP BELOW 300cAT 40k.sc PUT HP B/P INTO AUTO

WARMING UP

CHANGE STEAM TO SEALS FROM CRH, HP B/P D/S TEMP > 280c & CRH pr > 11 k.scKEEP IT FOR 20 MIN BEF ROLLINGROTATE SFCBEF ROLLING HP B/P OPENING MIN 50%

WARMING UP

RECORD METAL TEMP, SUPERVISORY READING,BRG TEMPSTART ROLLING AFTER 5th &6th pts REACH SATURATIONMARGIN SHOULD BE ABOVE 30 kEHC MADE THROUGHCRH NRV SLIDE VALVE IS THROUGH

WARMING UP

FC NRV TEST VALVES MADE THROUGH

ST.DEVICE & SPEEDER GEAR AT MAX

ROLLING TO 600 RPM

RAISE SPEED SET pt TO 600 RPMGVG CLOSES ON AUTO AT 240 RPMIF NOT OIL TEMP RAISE. CHECK i) DRAIN OIL TEMP ii) OIL pr AFTER GVGJOP STOPS AT 540RPM ON AUTO

SPEED SLOPES0-600 RPM - 300RPM/MIN600-2850 RPM 600RPM/MIN6003000rpm

ROLLING TO 3000 RPMWATCH HP SHAFT & CASING TEMP FOR ITS WARMINGUP MARGIN > 30kACCELERATION RATE 10 k - 200 RPM 20 k - 400 RPM 30 k - 600 RPM

DN / DT

TO AVOID CRITICAL SPEED

REQ .CONDITIONS i) GB OPEN ii) SPEED 600 2850 RPM iii) ACCN < 108 RPM

CRITICAL SPEED

3000 rpmNOTE DOWN VIBRATIONSCHECK TCV OPERATION IN AUTO AS THERE IS NO TRIPPING FOR BRG.TEMP RISECHECK FOR STOPPING OF AOPAT 3000 RPM IF TURBINE TRIPS ON GEN.PROTECTION HELD AT 600 RPM

SYNCHONISATION

MATCH SPEED WITH GRIDCLOSE FIELD BREAKERMATCH M/C VOLTAGE & GRID VOLTAGEAUTO SYNCHRONISE

LOADINGBLOCK LOAD N ref RAISE BY 20 RPM ON AUTO . IF NOT RAISE N ref TO AVOID REV.POWER TRIPCLOSE ALL DRAINSLOAD>4 MW TSE DISC CHANGES TO ADM SIDEIF NOT CHANGES,CONFIRM LOAD IS TAKEN UP OR RAISE N ref

LOAD CONTROLCONDITIONS: i)LOAD CONTROL ON ii) GEN.BREAKER CLOSE iii) SET ACTUAL LOAD > 5% OF RATED LOAD TAKE LOAD CONTROL @ 30 MWOBSERVE STRESS MARGINLOAD ACCORDINGLY & CLOSE B/P

LOAD RAISING

AT HRH 12 k.sc CHECK LP B/P SLIDING SET POINT IS TAKEN OVER MS pr 60 k.sc TEMP 400cCHARGE LPH S AT 50 MWFOR FURTHER LOAD RAISING HP CASING MARGIN MUST BE > 10 k

LOAD RAISING

START I st MILL.RAISE LOAD TO 70MW AT 2MW/MIN. MS pr 80 k.SC .TEMP 440cSTART 2nd MILL. LOAD 90MW . 100 k.sc TEMP 460cSTART 3rd MILL . REDUCE OIL FLOW 7 t/hr. LOAD 110MW . 120 k.sc TEMP 490c

LOAD RAISING

START 4th MILL.CUTOUT OIL BURNERS ONE BY ONE. LOAD 125MW . 130 k.sc TEMP 490c TAKE IP MODE. WARMUP HP HEATERS.

LOAD RAISINGA4 TO DEA MADE THROUGHSTART 5th MILL LOAD 150MW . 140 k.sc TEMP 500c .LOAD 210MW . 150 k.sc TEMP 540c