Start-Up After 8 Hours of Shutdown ( Hot start-UP)
Unit condition
1
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At least 2 BCW pump in Serrvice
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2
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Both SAPH and PAPH Running
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3
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Turbine : On Barring
(AOP,JOP,SOP, HPCF in service)
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4
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Generator: PW system, Seal Oil
system, Gas system
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5
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Condenser Pass : Both Charged
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6
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PAC & IAC : 1 PAC & 2
IAC in Service
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7
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8
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PRDS : 13.5
ksc , Temp>260 Deg
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Line-up from other units
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9
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ESP : Ready (Fields, Rapcon,
Heaters etc)
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10
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EAST Panel : Ready
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11
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LP & HP dosing system :
Ready
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12
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Bottom & Seal Trough : Lined
-Up
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13
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Evacuation system : Lined -Up /
charged (Pulled)
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14
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GRP Panel & Excitation:
Ready
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15
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Boiler Drum Pr=75 ksc, Ms
Temp=415-430 eg
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BSVs Closed
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16
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LDO & Atomizing system :
Ready
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LDO=16 ksc, Atomizing
Steam=6 ksc
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Sequence
00'
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Drum
Pr=75 ksc
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Take
4 guns in AB elevation
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Start
APH soot Blowing prior to firing
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MST:
415-430
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Open
Drain Before BSVs
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Open
BSV IBvs
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MS
strainer drain to SDFT, UFT, CRH drain pot,
Open
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Open
BSvs
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Open
Warm-up Of HPBP and then HPBP and LPBP
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HRH
Pr=2 ksc, Close CRH Drain pot
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Start
PA fan & seal air fans
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Ensure
FG & air Damper of PAPH Open Prior PA Fans
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Line-Up
Milling system
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Open CAG/CAD of at least 3 mills before PA Fan
start
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40'
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MS=
85/485
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Take
1st Mill
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Make
Ready SH/RH spray
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HR=12/440
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Charge
ESP fields
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Ensure
Ash Handling System Ready
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Cut
in 2nd Mill
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Peg
Deaerator with CRH (Pr=2 ksc)
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Reset
turbine
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Bring
Starting Device to 0, Put TG LO TCV on auto-45 Deg
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50'
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MS=85/500
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Open
Turbine SGC seq/Switch ON/Select Start-up
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105-Starting
Device (42 %) 109-
Tracking Device ON
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HR=12/450
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Raise
Starting Device to 100% once ESVs Opened
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110-Speeder
Gear goes 100 %(If LT100%)
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Bypass
flow BLI = 360 TPH
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Hold
for 5 minutes at 360 rpm
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112-
Turbine Speed 360 rpm command
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52'
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Raise
Turbine speed to 3000 rpm
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116-Turbine
speed 3000 rpm command
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(Rate
of Acceleration b/w 600-850 rpm2)
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(OFF
: Turning gear=240 rpm, JOP=540 rpm )
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Switch
Off ATRS Program (After 116)
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Monitor-Bearing
Temp/Pedestal-shaft Vibration ,TSI
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56'
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Put
AVR on auto
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Ensure
AOP: Off
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Close
Field Breaker
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Check
starting GT cooling Fans
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Select
GCB from ECP, put sync-ON
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Select
Auto-synchronizer made ON
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Load
Ref=50 MW . Pr Max=75 MW
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Synchronize
Generator with Grid
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Speed
set point raised by 8rpm and 20 MW load will come
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Raise
speed SP by small pulse
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Put
HPBP in Auto with increased SP
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60'
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Load=60 MW
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Cut
in LPH-2,3
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Change-Over
of ST to UT
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MS=85
/500
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Cutout
Heating system from PRDS to Deaerator
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HRH=16/470
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Raise
D/A Pr from 2 ksc to 4ksc
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Cut
in all Controllers
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65'
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Load=150 MW
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Charge
PRDS from CRH
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MS=100/500
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Cut
in HP Heaters
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HRH=20/480
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Start
2nd CEP, 1st TDBFP at Load=170
MW
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BLI=
600 TPH
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Control
MS/HRH Temp by spray (If Required)
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Trim
Dev : Off
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Change
D/A Pegging from CRH to Extraction
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Cut
in 3rd Mill
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70'
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Load=230 MW
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Cut
in 4th Mill
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MS=120/500
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Cut
off Oil Support
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Ensure
Healthiness of Scanners
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HRH=25/495
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Cut
in 5th Mill
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BLI=820
TPH
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Start
2nd TDBFP and Switch off MDBFP
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Cut
in 6th Mill
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86'
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Load=500 MW
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Ensure
all controllers in auto
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MS=170/500
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HRH=40/500
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BLI=1620
TPH
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135'
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Load=500 MW
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MS=170/535, HRH=45/535
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