1.
Sensitivity: Public (C4)
UBC Analysis -Jan-23

2.
Sensitivity: Public (C4)
FC/VM vs UBC Losses
Week 1 Week 2 Week 3 Week 4
FC/VM 2.04 1.82 1.78 1.70
UBC Gms/Kwhr 6.20 6.66 6.81 6.22
2.04
1.82
1.78
1.70
6.20
6.66
6.81
6.22
6.00
6.10
6.20
6.30
6.40
6.50
6.60
6.70
6.80
6.90
7.00
1.40
1.60
1.80
2.00
2.20
2.40
FC/VM UBC Gms/Kwhr

3.
Sensitivity: Public (C4)
Week Action taken for UBC
W1
Maintained mill outlet temp 82 Deg Celsius and O2 maintain 3.5 to 4.0%.
Maintain Mill air flow ratio 1.8 to 2.2 range.
W2
Mill output fineness study has been done and changed the classifier position.
SADC position change from 25 to 20.
Shift wise Coal pipe Temperature mapping & Pipeline Hammering done.
W3
O2 range in boiler has been set at 3.8 % to 4.0%
Shift wise SADC damper position checking.
W4
Coal damper position variation from 20 to 25%
Mill coal pipe clean air flushing done.
Week BA % FA % FC/VM Ash % BIOMASS
MV
AQUAKA
MV ST
DIMITRI
MV SDTR LIGNITE
Week 1 6.88 6.04 2.04 18.40 4.78 75.21 0.00 20.00 0.00
Week 2 7.56 6.52 1.82 17.12 10.00 70.00 0.00 20.00 0.00
Week 3 7.47 6.45 1.78 17.60 10.00 67.68 19.45 2.85 0.00
Week 4 7.63 6.52 1.70 17.26 10.00 62.00 28.00 0.00 0.00

4.
Sensitivity: Public (C4)
UBC Action plan -Feb-23
Sr. No Action for improvement Status Target Date Responsibility
1 Mill classifier position Changing (Under study) Continous Continous Shift incharge
2 Coal pipe purging periodically Weekly Weekly Shift incharge
3 Maintain wind box DP as per coal properties SADC fuel air damper change. Continuous DCS engineer
4
Maintain secondary air by observing oxygen at
APH I/L
Continous process. O2 maintain by 3.0 to
4%
Continous DCS engineer
5
Mill fineness maintain 75% in 200 mesh for all
corner in all mills
70 -75%
As per PM
plan
Shift incharge
6 Maintain PA header pressure Continuous process. Maintain by 750 to 765 Continuous DCS engineer
7 O2 cross check with portable analyser daily checked Continuous Boiler Operator
8 Sample collection line to be flushed daily checked Continuous Chemist
9 Maintain Air fuel ratio 1. 5 to 1.8 in all mills Maintain Continuous DCS engineer
10 Coal pipe temp mapping Weekly Continuous Shift incharge
11 Coal Pipe hammering Daily Continuous Boiler Operator
12 Mill-B Overhauling Plan Planned on Feb 23 15/02/2023 Murugan/Gourav
13 SADC checking shiftwise Under progress Continuous Murugan
14 Mill temperature Shiftwise Under progress Continuous Murugan