Rev : 0/2021
BOILER WALKDOWN CHECK LIST, NTPC Unchahar
UNIT:
Shift: M / E / N, GR-A/B/C/D
Date:
I. Drum/Separator Area:
S.L
1.
2.
3.
4.
5.
6.
7.
Location
Leakages & Valves passing
Any Leakage/ passing in Drum/Separator / SH / HRH
Safety Valves/ERV/ Soot blowing SV and impulse lines
All local instruments like hydra step and gauges are ok and
no leakages are observed.
Lighting ok
Debris, Scrap, dust on Buck Stays or nearby area
All SH/RH drains are not passing. (hot or not hot)
Any unsafe Area/ penthouse area abnormality
Remarks
YES / NO
YES / NO
If yes, then details
YES / NO
YES
YES
YES
YES
/
/
/
/
NO
NO
NO
NO
II. SH Spray Station:
S.L
1.
2.
3.
4.
Location
SH Spray Station- Valve Leakages, passing.
Lighting ok
Debris, Scrap, dust on Buck Stays or nearby area
Any unsafe Area
Remarks
YES / NO
YES / NO
YES / NO
YES / NO
If yes, then details
III. RH Spray Station:
S.L
1.
2.
3.
4.
Location
RH Spray Station-valve leakages, passing.
Deaerator, Aux Steam Header No leakages and No
safety valve passing.
Lighting ok
Debris, Scrap, dust on Buck Stays or nearby area
IV. Burner Firing Floor:
S.L
Location
1.
Burner area , PF pipe, Feeder and mill input coal pipe
coal Dust, Oil , steam, air leakages .
2.
Any Oil, Steam, Air leakage in fuel oil station.
3.
Any Coal dust/Oil accumulations on ducts, pipes,
buck stays
4.
HOTV,HOCV,HO-48
5.
Feeders, ECO Hoppers, Valves in Burner Floor, primary
sample coolers/SWAS sample coolers-ok
6.
Lighting ok
7.
Debris / Scrap accumulation
8.
Any unsafe area
9.
All Corner burner tilt shear pin/angle indicators ok.
10
All gauges and limit switches are not physically
damaged.
11.
Economiser flushing apparatus ash flow-OK
Remarks
YES / NO
YES / NO
YES / NO
YES / NO
Remarks
YES / NO
If yes, then details
YES / NO
YES / NO
YES / NO
YES
YES
YES
YES
YES
/
/
/
/
/
NO
NO
NO
NO
NO
YES/NO
V. APH & Bottom Ash Area:
S.L
1.
Location
APH, Oil Pumps, Drives
Remarks
YES / NO
If yes, then details
Rev : 0/2021
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
VI.
Goose neck Panel area for tube leakage checking
APH inspection lights ok
APH Air motor and main drive ok, APH air motor
lubricator oil level is ok (no abnormal sound, vib. etc.)
All APH area for leakages and adjacent area
ash accumulation.
APH firefighting charged with both valve closed
YES / NO
YES / NO
YES / NO
Mills, PA Fans, Bottom ash system-Expansion Readings at
ring header
Lighting
Debris / Scrap accumulation
Any unsafe area
Burner firing floor Emulsifier DV status(charged)
Eco/APH hopper Ash evacuation
S panel peephole clear
Bottom ash hopper peephole water visible.
(if no Bottom ash deashing i/p)
YES / NO
YES / NO
YES / NO
YES
YES
YES
YES
YES
YES
YES
/
/
/
/
/
/
/
NO
NO
NO
NO
NO
NO
NO
Complete Boiler should be thoroughly walked down to identify any tube leakages.
Remarks………………………………………………………
VII. All wall blower, LRSB home position.
VIII. Any passing, leakage in Soot blower Station.
IX. All manhole peephole properly closed and sealed.
X.
Any Significant Ash leakage.
XI All Boiler insulation OK.
XII Any leakage in Sample cooler.
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
YES / NO
Note: Care must be taken that any water/Steam leakage should not cause any secondary damage to any instrument or
System.
Note: All Critical valves which are vulnerable for Rains should be covered with appropriate material.
XIII. Elephant door cooling water charged, Pressure gauge ok
XIV. Boiler PA system healthy
XV. All Boiler expansion indicators healthy
XVI. Air leakage from ASLD
XVII. Any Other Communication:
S.L
Location
/ NO
YES / NO
YES / NO
Remarks
Boiler Desk Engineer
Name/Signature:
YES
UCE