Check List (Light-Up)



Unit:
Date:
S.No
Activity
Status
Remark
1
Drum Level, RH Protection Bypass


2
Seal Trough charged & Bottom Hopper filled


3
ESP field Ready & Off


4
SADC In auto


5
LPD close, Drum SH Vents Open, SH drains Open, Eco-Recirculation Open


6
APH blowing Lined-up


7
All 3 BCW Running


8
CBD Manual Open, EBD Auto close Bypass


9
LP dosing & Both CPU i/s


10
FG & Air path OK/ PAPH-A/B FG outlet Damper closed


11
All Mills & Feeders Ready


12
Hotwell & Deaerator Normal


13
SH/RH/HPBP spray Manual closed(Turbine Side)


14
MAL Drains/SDFT/UFT Manual Open


15
MS/HRH strainers drain to UFT,SDFT Open


16
Vacuum Pulled,TDBFPs on Barring/Rolled upto 1000 rpm through PRDS


A
Light-UP


1
Note Boiler Light-up Time ( 1st gun I/s)

Time of BLU:
2
Feed Drum through 30% line by TDBFP(Maintain DP>10 ksc) Or MDBFP


3
Close Drum/SH Vents at 2 ksc Drum Pressure


4
BSV Open at 5ksc Drum Pressure


5
HPBP/LPBP Open at 8 ksc Drum Pressure


6
Start-up vents Close after HPBP/LPBP Charging


7
Close SH Drains at 10 ksc Drum Pressure


B
Before Rolling

Time Before rolling:
1
Before PA Fan start,Open 2 Mills CAG/CAD, start PA Fan,Open PAPH FG o/l


2
Ensure only one Seal air Fan Running


3
One Mill A/C to be taken i/s as per HP Casing Metal Temp


4
Bring Rolling Parameter, Note Time Before rolling


5
Turbine EHTC Normal from Local


6
HP ESV/IV/CV /CRH gagging Removed


7
Decrease TG LO SP to 45 Deg


8
Turbine LP Mode, Load Ref 50 MW, Pr Max 75 MW, Th Pr SP=30 Ksc


C
Before Synchronization


1
GT Isolators from s/Y Closed


2
GRP relays Reset


3
One Mill i/s and Other Warmed-up(Hot Air charged)


4
HPBP spray Manual Open when Downstream Temp crosses 330 Deg


D
After Synchronization

Time Of sync:
1
SH/RH sprays from turbine Side Normalized. Monitor MS/HRH Temp


2
PW/CG Controller on auto


3
LPH/Deaerator charged


4
MAL/SDFT/UFT Manual drains closed


5
ST/UT Change-over at 100 MW


6
FRS High Range at 180 MW from 30 % line change-Over


7
Oil guns taken out (>5 Mills i/s: scanner Healthy), Note time of Oil w/d


8
ESP field charging after Oil guns taken out


9
Boiler silica to be monitored Before Load Increase





Checked By
Name

Sign

Designation



Comments

Post a Comment

Popular posts from this blog

HP & LP Bypass Operation and Protection

Image
HP & LP Bypass Operation and Protection Purpose Boiler operation independent of the turbine Minimum steam flow through SH & RH tubes during start-ups, low load operation & sudden unloading of unit Utilized or building up of steam parameters Avoiding the boiler trip on Reheat protection No steam flow through Boiler steam tubes will lead to starvation & thereby overheating and lead to premature failure of tubes  The capacity of HPLP bypass is 60% of full load turbine steam flow  Reheat Protection: RH protection (delay=10 sec) will act if TURBINE HP V/V & HPBP CLOSED [ either turbine HP stop v/v or HP CV in both HP line closed ] & [ both HP BP <2%]             OR TURBINE IP V/V & LP BP closed [ Either IP stop v/v or IP CV v/v in both IP line closed ] & [ Either LP BP stop v/v or LP BP C/V in both LP line is closed] OR   Generator ckt bkr open & [both HP BP closed OR both L...
Read more

Generator Air Tightness Test

Generator Air Tightness Test Period Of Test= 24 Hrs without a Break Air Pressure Drop (Allowed in 24 Hrs) : <=0.15 ksc Air Test Pressure = 3.5 ksc All LLDs Drain Closed. Ensure Seal Oil system in Operation Seal Oil DP >1.5 ksc AS Seal Oil Pr>4.5 ksc, start H2S Seal Oil system H2 Cooler Isolated PW in Winding is in filled condition, Winding Isolated. PW also kept Isolated. PW Tank at Atmospheric Pressure Ensure availability of  Instrument air and Bleed Out moisture from it by keeping it open till  Connect flexible air hose with the gas plant through the coupling and ensure no air leakage is there  The filling is to be done by opening the valves in the normal H2 filling line where as the valve from H2 rack side will remain closed. Once the air filling is commenced the test record data sheet   The air valve is to be opened full. While pressurising the LLD / Seal oil DP / Seal oil parameters are to be recorded as per the enclosed sheet. The...
Read more