Saturday, September 13, 2025

Dadri stage 1 Light Up/Turbine rolling checklist/Steps

 

Unit start up Checklist
1IOM sent to CISF
2Two ECW Pumps i/s
3Written clearance from: PP,RM.C&I,TM,AHM,EM
4Check Air, FG Pass dampers
52 Pass of ESP opened, All ACP i/s, Fields ready to be taken into service
6BT 50%
7IA, SA PR Adequate
8Aux PRDS charged from station
9LDO stations and AB, CD guns Normalised
10APH Soot blowing started with SB 26
11Mills ABCD normal
12MS 1,2 Supply Normalised
13FA, BA evacuation system ready, AHP Clearance
14SH drains Manual Opened
15SH Manual vents, SH start up vents & drum vents Open
16MS lines drains u/s of HPBP @8.5m open
17Open Eco R/c E20
18open CBD manual valves
19MS 203,204, HRH 203,204 CRH 203,204 open with manuals
20MS, HRH strainer drain to IBD MS 103/104, HRH 103,104 open
21MS, BD,SS,FW,HRH sampling line OK
22start CEP
23start BFP in r/c, wait for Chemistry clearance
24Take FRS 30%line and fill drum upto +50 mm
25Start APH, Scanner fan, ID fan, Fd fan put draft in auto, purge boiler
26Pull Vacuum
27Take AB13or AB24 and light up the Boiler
28After 30 minutes, Take other pair of AB
29Charge MOT cooler, LOTCV in auto with 45 Deg SP
30Check for TG Lub Oil filter
31Turbine SVs gagged removed
32Governing rack Normal, EHC Normal
33EHTC mimic: Speed SP<Turning speed,EHTC o/p:10%, Load controller ON
34All MAL dranis And MS/CRH/HRH drains to HPFT open
35Close Drum vents, SH Vents@2ksc
36CBD open
37Charge MS line @ 8ksc Drum Pr
38Charge HP, LP Bypass @ 10 lsc, close MS line drains u/s of HPBP
39close start up vents after HPLP Bypas charging
40EHTC mimic: Load ref 20MW,PRmax 50 MW
41Check X1, X2, X3 Before ESV opening
42Reset turbine by lower SD to 0%, Reset GRP
43Rolling: TG>>turbine all SGC>>turbine Seq>>Program ON>>startup
44Advance upto 101 to 105 for SD to reach 42% i.e. ESV opening
44For 540 rpm, check X4, X5, the advance upto 112 step, Then wait
45start PA Fans, Charge SW, SO, H2 Gas Cooler @ 540 rpm
46check Barring gear close@240rpm, JOP @ 540 rpm
47Inform S/Y to close Isolator
48For 3000 rp, X6 fulfills.
49From Program , advance upto 116 step, Program OFF
50DAVR: DAVR Reset, Close FCB, Excitation ON, make 16KV Gn TV
51Then Sel GCB form OWS, and selction: ATRS from ECP, EHTC: Synchroniser ON
52Open Speed Ref Pop-up for loading , As Unit sync, Load Turbine, Prmax:225 MW
53close HP Bypass , the LP Bypass to avoid HP/IP Trim
54check for GT Fans
55take Mill A
56close MS 101,102,103,104, HRH 1010,102,103,104
57Put SLC Drains ON
58@20% Load : Charge D/A, LPHs
59@40% load: charge HPHs, Change over ST to UT
60Take Mills B, C@ 30% and 40% load
61Changeover FRS 30% to 100% @ 40% Load
62Take Additional mill D, and withdraw oil support
63Put Machine in CMC
64Close E20 v/v
64charge ESP Fields, and Normalise all Passes

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