ADVISORY SPARE-TPP.pdf

i
TYPICAL LIST OF CRITICAL SPARE PARTS FOR THERMAL POWER STATION
CONTENT
S.No Description Page No.
1 Boiler 1
2 Turbine 6
2.1 Spare for KWU Turbine 6
A High pressure turbine 6
B Intermediate pressure turbine 6
C LPT 7
D Bearing 7
E Jacking oil system 7
F Control oil system and governing rack 7
G Lubricating oil system 7
H Coupling bolts 8
I Turning gear 8
J HPSV/CV 8
K IPSV/CV 8
L LPBP SV/CV 8
M HPBP 8
N MS strainer 8
O HRH strainer 8
P Condenser 8
Q Evacuation system 9
R Heaters 9
S Feed water system 9
T Condensate system 9
U Turbine gland seal steam system 9
V TD BPF TURBINE 9
W Generator seal rings 9
X ACW system 9
2.2 Spare for Diaphragm Type Turbine
9
A High pressure turbine 9

ii
B Intermediate pressure turbine 10
C LPT 10
D Coupling Bolts 10
E Bearing 10
F Lubricating Oil System 10
G Governing System 10
H HPSV(ESV)/CV , IPSV(IV)/CV, Transfer pipe 10
I Turbine gland seal steam and evacuation system 11
J Heaters 11
K Feed Water System 11
L Condensate System 11
M Generator 11
N Critical Bends & Pipes 11
O LPBP 11
P HPBP 11
3 Coal Handling Plant 11
3.1 Mechanical 11
A Paddle feeders 11
B Idlers 12
C Conveyor gear boxes 13
D Conveyor drive and conveyor belt 13
E Pulleys 14
F Coal crusher 14
G Vgf/vibrating screening feeder 15
H Stacker/reclaimer (Including boom) 16
I Tripper 17
J Wagon tippler and accessories 17
3.2 Electrical 17
A Paddle feeder 18
B Conveyors 18
C Crushing equipment 18
D Stacker reclaimer 18
E Wagon tippler and accessories 18
4 Cooling Tower 18

iii
A
Mechanical /electrical (Drive) ITEMS (for each unit cooling
towers)
19
5 Compressed Air System 19
6 HVAC System 20
7 Ash Handling Plant 20
8 Elelctrical 22
8.1
Spares For 400 KV/220 KV/132 KV Switchyard
Equipment
22
A Circuit breakers 22
B Isolators 23
C
Current transformer complete in all respects including
terminal connectors.
23
D
Capacitor voltage transformer complete in all respects
including terminal connectors.
23
E
Surge arrester complete in all respects including terminal
connector and with surge counter and lead.
24
8.2 Spares For 765 KV 24
A Circuit breakers 24
B Isolators 24
C Current transformer 25
D Capacitor voltage transformer 25
E Surge arrester 25
8.3 Spares For 765/400/220/132 KV Switchyard Equipment 25
8.4 Spares For GIS 27
A Gas insulated switchgear 27
8.5 Spares For Control & Relay Panel 28
A Protective relays 28
B Indicating meters 28
C Others 29
D
Substation automation system and generator protection (if
applicable)
29
8.6 Spares For GT/ICTS/ST/UAT 30
8.7 Spares For Any Misc. Service Transformer 31
8.8 Spares For Dry Type Transformer 31
8.9 Spares For Shunt Reactor 31
8.10 Spares For Neutral Grounding Reactor 31
8.11 Spares For 200 MW/500 MW/660 MW Unit SG 32

iv
A VFD system 32
B VFD transformer 32
C L.T. MCCs (SB MCC) 33
D Electrostatic precipitator (ESP) 34
E ID fan 35
F ID fan lube oil system 35
G FD fan 36
H FD fan lube oil system 36
I PA fan 36
J PA fan lube oil system 36
K Seal air fan 36
L Mill motor and aph motor 36
M Air pre heater motor 36
N Soot Blowers 36
O Electrical Actuators 36
8.12 Spares For 200/500/660 MW Unit TG 37
A Generator & Auxiliaries 37
B Gas System 39
C Seal Oil System 39
D Stator Water Cooling System 40
E Eot Crane For Turbine Hall 40
F Eot Crane For Turbine Hall (Vfd Drive) 40
G Hydrogen Generation Plant 41
H Motors 41
8.13 Spares For GCB 41
8.14 Spares For Busduct 42
A Generator bus duct 42
B 11 kV Busduct 43
C 6.6 kV Busduct 43
D 3.3 kV Busduct 43
8.15 Spares For 33 KV/11KV/6.6KV/3.3KV Switchgears 43
A 33 KV switchgears 43
B 11 KV/6.6 KV/3.3KV switchgears 45

v
8.16
Spares For 200/500/660 MW Units LT SWGR and LT
Busduct
46
8.17 Spares For Battery And Battery Charger 48
A Battery 48
B 220 V battery charger 48
8.18 Spares For Service/ Passenger Elevator 49
8.19 Spares For DG Set (>1000KVA) 49
8.20 Spares For DG Set (Upto 1000 KVA) 51
8.21 Spares For PLCC Package 52
8.22 Spares Unit Station Lighting & Cables 52
A Lamps 52
B Lighting fixture parts 52
C Lighting panels 54
D Lighting control switch/receptacles 54
E Junction boxes 54
F Power & control cables 54
8.23 Spares For Offsite Area 55
A Coal handling plant 55
B Ash handling plant 55
C Cooling tower plant 55
D Pre-treatment plant 55
E Primary and secondary air compressor room 55
F Fire hydrant system 56
9 Spares For C&I Systems 56
A
Spares for control system/DDCMIS/PLC (covering
FSSS/Turbine/OLCS/CLCS including Gas turbines)
56
B C&I spares for main turbine, TD BFP and HP Bypass 56
C C&I spares for Boiler, CLCS & OLCS 57
D Control cables 57
E AHP 58-59

1
List of Critical Spares
Sl. No. Particulars Quantity Remarks
1
Boiler
i Economizer straight tube of each
type size thickness and material
250 mtrs
ii Economizer tube bends of each
20 nos.
iii Water wall straight tube of each
125 mtrs.
iv LTSH straight tube of each type
size thickness and material
100 mtrs.
v LTSH tube bends of each type size
thickness and material
10 nos.
vi Intermediate temp. SH/Platen
Super Heater straight tube of each
100 mtrs.
vii Intermediate temp. SH/Platen
Super Heater tube bends of each
10 Nos.
viii Final Super Heater Straight Tube
of each type size thickness and
material
100 mtrs.
ix Final Super Heater tube bends of
each type size thickness and
material
10 Nos.
x RH straight tube of each type size
150 mtrs.
xi RH tube bends of each type size
10 Nos.
xii Dissimilar metal weld joint spot
piece for SH and RH of each type
size thickness and material
40 Nos.
xiii Manhole gasket for Drum and for
bottom ring headers
10 sets
xiv Complete pump and motor assy for
SG water circulation pump
1 No. May be pooled
xv Journal bearing for SG water
circulation pump
1 set
xvi Thrust bearing for SG water
circulation pump
1 set
xvii Casing wear ring for SG water
circulation pump
1 set
xviii Impeller wear ring for SG water
circulation pump
1 set
xix ID fan bearing 2 sets

2
xx ID fan blade assy / impeller with
shaft
1 set May be pooled
xxi ID fan coupling between fan and
motor
2 sets May be pooled
xxii ID fan hydraulic servomotor / IGV 1 set
xxiii Runner assy for ID fan fluid
coupling – if applicable
1 set
xxiv Lube oil pump assy for ID fan 1 set
xxv Lube oil cooler assy for ID fan 2 sets
xxvi FD fan bearing 1 set
xxvii FD fan blade assy with shaft 1 No. May be pooled
xxviii FD fan coupling between fan and
motor
1 No. May be pooled
xxix Lube oil pump assy for FD fan 1 No.
xxx Lube oil cooler assy for FD fan 2 Nos.
xxxi FD fan hydraulic servomotor 1 No. May be pooled
xxxii PA fan bearing 1 set
xxxiii PA fan blade assy with shaft 1 set May be pooled
xxxiv PA fan coupling between fan and
motor
1 No.
xxxv PA fan hydraulic servomotor 1 No. May be pooled
xxxvi Lube oil pump assy for PA fan 1 No.
xxxvii Lube oil cooler assy for PA fan 2 Nos.
xxxviii Coal pulveriser
rollers/tyres/grinding balls
6 Sets
xxxix Coal pulveriser bull ring
segments/bowl/rings
3 Sets
xl Mail journal and spring 3 Sets May be pooled
xli Mill gear box 2 Nos. May be pooled
xlii Mill shaft/yoke 2 Nos.
xliii Set of all bearings for coal
pulveriser
3 Sets
xliv Mill discharge valve assy 3 Sets
xlv Pump assy for mill lube oil system 2 Nos.
xlvi Cooler assy for mill lube oil system 2 Nos.
xlvii Feeder belt 6 Nos.
xlviii Feeder belt drive reducer 2 Nos.
xlix Hot air gate seals 8 Sets
l Seals of ESP isolating gates 2 Sets
li Coal compartment assembly 2 Sets
lii Fuel oil guns 4 Nos.
liii Fuel oil burner isolation valves 4 Nos.
liv Seal air fan impeller with shaft 1 No.

3
lv Seal air fan bearing 1 Set
lvi PAPH/SAPH guide bearings 2 Nos. May be pooled
lvii PAPH/SAPH support bearing 2 Nos. May be pooled
lviii PAH/SAPH CE/HI/HE heating
element
1 Set
lix PAPH/SAPH air motor 2 Nos.
lx PAPH/SAPH speed reducer 1 No. May be pooled
lxi PAH/SAPH fluid coupling 2 Nos.
lxii PAPH/SAPH speed reducer clutch
assembly
2 Nos.
lxiii PAPH/SAPH rack and pinion assy 1 Set May be pooled
lxiv PAPH/SAPH pump assy for
Support/Guide lube oil system
1 No.
lxv PAPH/SAPH Cooler assy for
Support/Guide lube oil system
1 No.
lxvi Complete boiler drum separator
safety valve of each type
1 No.
lxvii Upper adjusting ring for boiler drum
/ separator safety valve of each
type
2 Nos.
lxviii Lower adjusting ring for boiler
drum/separator safety valve of
each type
2 Nos.
lxix Safety valve disc for boiler
drum/separator safety valve if each
type
2 Nos.
lxx Safety valve stem for boiler
each type
1 No.
lxxi Safety valve Spindle for boiler
each type
1 No.
lxxii Safety valve guide for boiler
each type
2 Nos.
lxxiii Safety valve locking pin set for
boiler drum/separator safety valve
of each type
1 Set
lxxiv Complete SH safety valve of each
type
1 No.
lxxv Upper adjusting ring for SH safety
valve of each type
2 Nos.
lxxvi Lower adjusting ring for SH safety
valve of each type
2 Nos.
lxxvii Safety valve disc for SH safety
valve of each type
2 Nos.

4
lxxviii Safety valve stem for SH safety
valve of each type
1 No.
lxxix Safety valve Spindle for SH safety
valve of each type
1 No.
lxxx Safety valve guide for SH safety
valve of each type
2 Nos.
lxxxi Safety valve locking pin set for SH
1 Set
lxxxii Complete RH safety valve of each
type
1 No.
lxxxiii Upper adjusting ring for RH safety
valve of each type
1 No.
lxxxiv Lower adjusting ring for RH safety
valve of each type
1 No.
lxxxv Safety valve disc for RH safety
valve of each type
2 Nos.
lxxxvi Safety valve stem for RH safety
valve of each type
1 No.
lxxxvii Safety valve Spindle for RH safety
valve of each type
1 No.
lxxxviii Safety valve guide for RH safety
valve of each type
2 Nos.
lxxxix Safety valve locking pin set for RH
1 Set
xc Complete ERV valve assy including
pilot valve for SH of each type
1 No.
xci Disc for ERV main valve for SH of
each type
2 Nos.
xcii Spring for ERV main valve for SH
of each type
2 Nos.
xciii Seal rings for ERV main valve for
SH of each type
2 Nos.
xciv Seal bushing for ERV main valve
for SH of each type
2 Nos.
xcv Disc and stem assy for ERV pilot
valve for SH of each type
2 Nos.
xcvi Bushing for ERV pilot valve for SH
of each type
2 Nos.
xcvii Spring for ERV pilot valve for SH
of each type
2 Nos.
xcviii Seal ring for ERV pilot valve for SH
of each type
2 Nos.
xcix Complete ERV including pilot
valve for RH of each type
1 No.
c Disc for ERV main valve for RH of
each type
2 Nos.
ci Spring for ERV main valve for RH
of each type
2 Nos.

5
cii Seal rings for ERV main valve for
RH of each type
2 Nos.
ciii Seal bushing for ERV main valve
for RH of each type
2 Nos.
civ Disc and stem assy for EV pilot
valve for RH of each type
2 Nos.
cv Bushing for ERV pilot valve for RH
of each type
2 Nos.
cvi Spring for ERV pilot valve for RH of
each type
2 Nos.
cvii Seal ring for ERV pilot valve for RH
of each type
2 Nos.
cviii Pressure seal gasket for Main
steam stop valve
2 Nos.
cix Stem for Main steam stop valve
and its integral bypass
1 No.
cx Disc for Main steam stop valve and
its integral bypass
1 No.
cxi Seat ring for Main steam stop valve
and its integral bypass
2 Sets.
cxii Complete SH spray control valve
assy
2 Nos.
cxiii Complete RH spray control valve
assy
2 Nos.
cxiv Aux steam pressure reducing cum
desuperheating valve assy
1 No.
cxv Class 1500 gate/globe valve assy
25mm/40mm/50mm/65/mm/80/mm
100/mm
2 Nos.
cxvi Class 2500 gate/globe valve assy
25mm/
40mm/50mm/65mm/80mm/100mm
2 Nos.
cxvii Complete assembly of water wall
deslagger
4 Nos. May be pooled
cxviii Complete valve assembly for water
wall deslagge
6 Nos.
cxix Complete assembly of LRSB 2 Nos. May be pooled
cxx Complete valve assembly for LRSB 2 Nos.
cxxi Compete valve assembly for
PAPH/SAPH soot blower
2 Nos.
cxxii Reduction gear box and motor for
SAPH/ PAPH soot blower
oscillation
cxxiii Fabric material of different
thickness and material for NMEJ
100 RM
cxxiv HP dozing pump assy 1 No.
cxxv LP dozing pump assy 1 No.

6
cxxvi Support Insulator for ESP 8 Nos.
cxxvii Shaft Insulator for ESP 20 Nos.
cxxviii Emitting electrode for ESP 500 Nos. May be pooled
cxxix Inner arm assy for ESP 30 Nos.
cxxx Outer arm assy for ESP 30 Nos.
cxxxi Gear box assy for emitting rapping
system of ESP
cxxxii Gear box assy for collecting
rapping system of ESP
cxxxiii Shock bar/anvil for ESP 40 Nos.
2 Turbine
2.1 KWU Turbine
A High Pressure Turbine
i MS pipe/casing U-seal ring as per
Drawing
2
ii MS pipe /casing U-seal ring-
Unmachined
2
iii Inner/Outer casing U-seal ring as
per Drawing
1
iv Inner-Outer casing U-seal ring -
Unmachined
1
v Inner/Outer I-seal ring-Unmachined 1 May be pooled
vi HPT exhaust Pipe/Casing U-seal
ring Unmachined
1
vii HPT exhaust Pipe/Casing U-seal
ring as per Drawing
1
viii CRH NRV flap, hinge pin assembly 1 set May be pooled
ix Breach Nut 1 set May be pooled
x Rotaing Blades 1 Set May be pooled
xi Rotor 1 no. May be pooled
xii Stationary Blades 1 set May be pooled
xiii Module 1 no. May be pooled
xiv Gland seal segments 1 set
xv Evacuation valve stem, disc and
seat( if applicable)
1
B Intermediate Pressure Turbine
i Inlet pipe angle ring-Unmachined 1
ii Extraction Pipe Angle ring-
Unmachined
1
iii Rotaing Blades 1 set May be pooled
iv Rotor 1 May be pooled
v Stationary Blades 1 set May be pooled
vi Inner/Outer casing-Module 1 May be pooled

7
vii Gland seal segments 1 set
C LPT
i Extractiion-1 bellows 1 set
ii Extraction-2 bellows 1 set
iii Extraction-3 bellows 1 set
iv LPT inlet pipe bellows 1 set
v LPT casing to gland box bellows 1 May be pooled
vi Clamping pieces and locking plates
for free standing blades
1 set
vii Free standing Rotating Blades 1 set May be pooled
viii Rotor 1 May be pooled
ix Stationary Blades 1 set May be pooled
x Gland seal segments 1 set
D Bearing
i Brg. 1 babbited shell with matching
support
1 no.
ii Brg. 2 babbited shell with matching
support and thrust pads
1 set
iii Brg. 2 liner 1
iv Brg. 3 babbited shell with matching
support
1
v Brg. 4 babbited shell with matching
support
1
vi Brg 5 babbited shell and spherical
support pads
1
vii Brg. 6 babbited shell and spherical
support pads
1
viii Brg. 7 babbited shell with matching
support (if applicable) 1
E Jacking Oil system
i Jacking oil flexible hoses for each
bearing
1 set
ii Jacking oil pump assembly 1
iii Jacking oil to each bearing NRV 1 set
iv Jacking oil header pressure
regulating valve assembly
1
F Control Oil system and
Governing Rack
i Hydraulic Governor bellows 1
ii Main Trip Valve assembly 1
iii All Kinds of “O” rings 1 set
iv Filter elements 1 set
G Lubricating Oil System

8
i Main Oil pump assembly complete
with Bearings
1 no.
ii HPT/MOP gear Coupling 1 no.
iii MOP suction Oil Injector assembly 1 set
iv Oil strainer/filter 1
v AOP assembly 1
vi EOP assembly 1
H Coupling Bolts
i HP/IP 1 set
ii IP/LP 1 set
iii LP/Gen 1 set
I Turning gear
i Stationery Blades/ Nozzle 1 set
ii Rotating blades 1 set
J HPSV/CV
i Stop valve stem and disc 1
ii Stop valve U seal ring 1
iii Stop valve test valve liner with
Margin
1 set
iv Stop valve pilot 1 set
v Control valve stem and disc 1
vi Control valve U seal ring 1
K IPSV/CV
ii Stop valve U seal ring 1
iii Stop valve test valve liner 1
iv Stop valve Pilot 1
v Control valve stem and disc 1
vi Control valve U seal ring 1
L LPBP SV/CV
ii LPBP spray pressure switch 4
M HPBP
i Pressure control valve stem, seat 2 set
ii BPE valve stem 2 set
N MS Strainer
i Element along blanking device
gasket, sealing ring, protection ring
metallic ring.
1
O HRH Strainer

9
i Element along blanking device
gasket, sealing ring, protection ring
.(metallic Ring).
1
P Condenser
i CW Pipe to Condenser flexible joint
assembly
2 no.
Q Evacuation System
i Manhole gaskets 1
ii Vacuum pump assembly 1 set
iii Cooler element 1
R Heaters
i LP heater-1 safety valve shell side 1
ii LP heater-2 safety valve shell side 1
iii LP heater-3 safety valve shell side 1
iv HP heater-5 safety valve shell side 1
v HP heater-6 safety valve shell side 1
S Feed water System
i BFP assembly 1
ii Bearings 1 set
iii Discharge valve stem and disc 1 set
iv Hydraulic coupling assembly 1 May be pooled
T Condensate system
i CEP assembly 1
ii CEP Suction strainer 1
iii CEP discharge valve stem and disc 1
iv Condensate line NRV before
Deaerator assembly
1
U Turbine gland seal steam system
i Gland steam condenser assembly 1 May be pooled
ii Gland steam control valves
actuator
1
V TD BPF Turbine
Set of Bearings 1
W Generator seal rings
i Turbine and Generator and seal
rings
1 set
X ACW system
i Pump assembly 1
ii Motor/Pump coupling 1
2.2 Spares for Diaphragm Type
Turbine
A High Pressure Turbine
i Spare HP Rotor 1

10
ii HP Diaphragms 1 set
B Intermediate Pressure Turbine
i Spare IP Rotor 1
ii IP Diaphragms 1 set
C LPT
i Spare LP Rotor 1
ii LP Diaphragms 1 set
D Coupling Bolts
i Oversize HP-IP Coupling Bolts 1 set
ii Oversize IP-LP Coupling Bolts 1 set
iii Oversize LP-Gen Coupling Bolts 1 set
iv Generator- Exciter Coupling Bolts 1 set
E Bearing
i Bearings and Thrust pads. 1 set
ii Oil guard fins 1 set
F Lubricating Oil System
i MOP Gear Coupling 1
ii MOP rotating assembly 1
iii MOP Bearings 1 set
iv MOP seals 1 set
v Lub oil cooler tube nest assembly 1
G Governing System
i Speed Governor 1
ii Over speed governor and its
internals
1 set
iii Control valve Servomotor assembly 1 set
H HPSV(ESV)/CV , IPSV(IV)/CV,
Transfer pipe
i Serrated ring of ESV 2
ii Serrated ring each of HPT /IPT
transfer pipe lines.
2
iii HPT Control valves( Valve cone
with stem).
1 set
iv IPT Control Valves( Valve cone
with stem)
1 set
v Liner of each HPT CV 1
vi Liner of each IPT CV 1
vii HPT Cams 1 set
viii HPT& IPT control valve stem each 1
ix HPT Control valve Rollers with
Bearings
4
x ESV and IV stop valve( Valve cone
with stem)
1 no each

11
xi ESV damper assembly 1
xii ESV and IV strainer 1 piece
I Turbine gland seal steam and
evacuation system
i Nozzles set for main ejectors and
Gland steam cooler
1 set
ii Main ejector tube nest assembly 1
iii GSC with Ejector tube nest
assembly
1
J Heaters
i LPH 2/3/4 tube nest assembly 1 set
HP heaters 1 set
K Feed water System
i BFP Working oil cooler tube nest
assembly
1
ii BFP Lub oil cooler tube nest
assembly
1
iii BFP cartridge. 1
L Condensate system
i CEP assembly 1
M Generator
i Hydrogen seal assembly. 1 set
N Critical Bends & Pipes
i Bends and pipes of various duties
and types
1 Each for Drip
system, Drain
system,
Condensate
system, FW system,
Extraction steam
system, Pipe
piece(MS, CRH,
HRH)
O LPBP
i LP Bypass Control valve Seat,
cone and stem
1 set
P HPBP
i HP Bypass Control valve Seat
,cone and stem
1 set
3 Coal Handling Plant
3.1 Mechanical
A Paddle feeders
i Gear box (Paddle Wheel, Traverse
etc)
1 No of each type

12
ii Internal gear set including bearings
of all gear boxes
1 set of each type
iii Rotor pump 1 No of each type
iv Hydraulic Motor (for Paddle Wheel,
traverse)
1 No of each type
v Traverse pump 1 No of each type
vi Wheel and shaft assy 1 No of each type
vii Plummer block & bearings of all
wheel
1 set of each type
viii Rotor assembly 1 set of each type
ix Hydraulic oil cooler 1 set of each type
x Hydraulic hoses of all type 2 sets of each type
xi Solenoid valves, pressure
regulating valves & hydraulic circuit
valves of all type
2 sets of each type
xii Oil Filter 1 set of each type
B Idlers
i 35o troughing idlers complete with
base frame and mounted brackets,
etc.
10% of Population
ii Rolls for (i) above 10% of Population
iii Troughing idlers complete with
base frame and mounting brackets,
etc. (for belt feeders)
20% of Population
iv Rolls for (i) above 20% of Population
v 350 impact idlers complete with
mounting brackets and base frame
etc.
20% of Population
vi Rolls for (i) above 20% of Population
vii 350 troughing training idlers
complete with base frame and
brackets, etc. (if used)
20% of Population
viii Transition idler complete as in (1)
above
20% of Population
ix Flat return idlers complete with
mounting brackets, etc.
10% of Population
x Flat Return Idlers complete with
mounting brackets, etc. (for belt
feeders)
10% of Population
xi Flat return trainer complete with
mounting brackets, etc.
10% of Population
xiii Belt cleaning spiral rubber disc
return idler complete with mounting
brackets, etc.
20% of Population
xiv Two roll with 10o troughing return
idler assy.
10% of Population
xv Rolls for (i) above 10% of Population

13
xvi SS Idlers 20% of Population
C Conveyor gear boxes
i Hold back device 1 Set of each type
and rating (for
population upto 10
Nos.)
2 Sets of each type
and rating (for
population more than
10 Nos.)
ii Complete gear box assembly with
hold back device
1 Set of each type
and rating (for
population upto 10
Nos.)
2 Sets of each type
and rating (for
10 Nos.)
iii Set of internal including oil
seal,bearing ,each type
1 Set of each type
and rating (for
population upto 10
Nos.)
2 Sets of each type
and rating (for
10 Nos.)
D Conveyor drive and conveyor
belt
i Gear Coupling complete 10% of each type
ii Coupling bolt set 2 Sets of each type
and rating
iii Fluid coupling complete 1 Set of each type
and rating (for
population upto 10
Nos.)
2 Sets of each type
and rating (for
10 Nos.)
iv Runner & impeller assembly of fluid
coupling
1 Set of each type
and rating
v Fusible plug 10 Nos of each type
vi Scoop control assembly 1 Set of each type
and rating
vii Mechanical face seal 2 Set of each type
and rating
viii Resilliance disc assembly(if
applicable)
1 Set of each type
and rating

14
ix Multi Disc Coupling/ Rubber Inserts
etc
1 Set of each type
and rating
x Hydraulic oil cooler 1 Set of each type
and rating
xi Oil & water Pump with motor 1 Set of each type
and rating
xii Conveyor Belt 1
xiii Main Conveyors 1
xiv Boom conveyor, belt feeder,
intermediate conveyor
Two Complete
lengths of each type
plus 20% of
population
E Pulleys
i Pulleys 1 No. of each type &
size in pulley drum &
shaft Ø (for
population upto 10
Nos.)
2 Nos. of each type
and size in pulley
drum & shaft Ø (for
10 Nos.)
ii Plummer block 2 No. of each type &
size (for population
upto 10 Nos.)
4 No. of each type &
size (for population
more than 10 Nos.)
iii Bearing of all type 4 Nos of each type
iv Bearing adopter, lock washer, lock
nut
4 Nos of each type
v Life line shaft with plummer block &
bearings assembly
2 Nos of each type
F Coal crusher
i Plummer Block assembly complete
including bearing, lock nut, lock
washer etc.(DE+NDE)
2 sets of each type
ii Hammer sets 4 sets of each type
and size
iii Rotor assembly complete
consisting of rotor shaft & keys,
End discs, Centre discs, distance
rings, suspension bars, disc
clamping nuts and shaft extension
etc. but without hammers, bearings
and pillow blocks as applicable
1 set of each type
and size
iv Crusher Shaft with key & Lock nut 1 No of each type

15
v Suspension bar with lock nut 4 set of each type
and size
vi End discs, Centre discs, distance
rings of crusher
1 set of each type
and size
vii Disc locking device of crusher 1 set of each type
and size
viii Cage bars, if applicable 2 sets of each type
and size
ix Breaker plate 2 sets of each type
and size
x Liners 2 sest of each type
and size
xi Screen plate upper & lower 2 sets of each type
and size
xii Crusher Fluid coupling complete
assembly
1 No of each type
xiii Runner & impeller assembly of fluid
coupling
1 No of each type
xiv Fusible plug 10 No of each type
xv Scoop control assembly with motor 1 No of each type
xvi Mechanical face seal 2 No of each type
xvii Resilliance disc assembly(if
applicable)
1 No of each type
xviii Multi Disc Coupling/ Rubber Inserts
etc
1 Set of each type
and rating
xix Oil & water Pump with motor 1 No of each type
xx Hydraulic oil cooler 1 No of each type
G Vibrating screening feeder
i Screen plates 2 sets of each type
and size
ii drive & driven unbalanced shafts 1 Set of each type
and rating
iii Bearings 2 Set of each type
and rating
iv vibrating blocks 1 Set of each type
and rating
v main shaft ( with universal
coupling)
1 Set of each type
and rating
vi
vii unbalanced weights 1 Set of each type
and rating
viii Vibrating Gear box 1 Set of each type
and rating
ix Vibrating assembly consisting of all
rotating parts including drive &
driven unbalanced shafts including
bearings, casing, spring, vibrating
1 set of each type

16
blocks, main shaft, sheave &
unbalanced weights as applicable.
x Drive unit assembly (including
electric motor, hydraulic pump,
hydraulic motor, flexible shaft, gear
box, as applicable)
1 set of each type
xi Spring set 2 set of each type
xii Hydraulic pump with motor 1 set of each type
xiii Hydraulic motor 1 set of each type
xiv Gear box 2 set of each type
xv Internal gear set of gear boxes 2 set of each type
xvi V belt 2 set of each type
xvii Drive & driven pulley of v belt drive 1 set of each type
H Stacker/reclaimer (including
boom)
i Fluid coupling complete assembly 1 No of each type
ii Runner & impeller assembly of fluid
coupling
1 No of each type
iii Fusible plug 10 No of each type
iv Mechanical face seal 1 No of each type
v Resilliance disc assembly 1 No of each type
vi Multi Disc Coupling/ Rubber Inserts
etc
1 No of each type
vii Hydraulic pump for luffing, slewing,
bucket wheel drive with electric
motors, coupling, valves and servo
motor, EP control
1 No of each type
viii Solenoid valves, pressure
regulating valves & hydraulic circuit
valves of all type
1 set of each type
ix Hydraulic cylinder including luffing
cylinder
1 No of each type
x Repair kit for hydraulic cylinder
including oil seals etc.
1 No of each type
xi Slew gearbox with shaft and pinion 1 No of each type
xii Slew bearing ( for machines older
than 20 years)
1 set of each type
xiii Coupling for gear boxes 1 set of each type
xiv Gearbox of bucket wheel 1 No of each type
xv Internal gear set of all gear boxes 1 set of each type
xvi Traverse drive assembly consisting
of reducer, couplings, brake assy.
etc.
1 No of each type
xvii Complete carriage wheel
assembly)
1 No of each type

17
xviii Brake assembly with hydraulic &
electric drive
1 set of each type
xix Brake shoe 2 set of each type
xx Plumber block & bearings of all
wheel
2 set of each type
xxi Bearing adopter, lock washer, lock
nut
2 set of each type
xxii Hydraulic oil cooler 1 set of each type
xxiii Hydraulic hoses of all type 2 set of each type
xxiv Rail Clamp Assembly 1 set of each type
xxv Chain Assy with sprocket (for
Scrapper type reclaimer
1 Set of each type
and rating
xxvi Scrapper blades of Scrapper type
reclaimer)
10 Nos of each type
xxvii Hoisting gear box (for Scrapper
type reclaimer)
1 Set of each type
and rating
I Tripper
i Drive gear box 1 No of each type
ii Internal gear set of all gear boxes 1 set of each type
iii Actuator for flap gate 1 set of each type
iv Drive shaft and wheel assly. 1 set of each type
v Plumber block & bearings of all
wheel
1 set of each type
vi Bearing adopter, lock washer, lock
nut
1 set of each type
vii Brake assembly with hydraulic &
electric drive
1 set of each type
viii Rail Clamp Assembly 1 set of each type
ix Couplings 1 set of each type
J Wagon tippler and accessories
i Gear Box 1 set of each type
ii Internal gear set of all gear boxes 1 set of each type
iii Couplings 2 sets of each type
iv Hydraulic Pump 1 No of each type
v Hydraulic motor 1 No of each type
vi Open segment gear and pinion 1 set of each type
vii Flap Gate Actuators with motor,
gear box etc
2 sets of each type
viii RPG Actuators with motor, gear
box etc
1 sets of each type
ix Hydraulic hoses of all type 2 sets of each type
x Hydraulic oil cooler 1 sets of each type
xi Spur Gear Set 1 sets of each type
3.2 Electrical

18
A Paddle feeder
i Motor(Rotor, traverse) 1 No of each type
ii eddy Current Coupling/Dynodrive
assembly
1 set of each type
iii Electric card, modules 1 no. of each type
iv Flexible cable 1 length of each type
v Electronic Cards/modules 1 no. of each type
B Conveyors
i Drive motor 1 No. of each type
and rating (for
population upto 10
Nos.)
2 Nos. of each type,
make & rating (for
population more
more than 10 Nos.)
ii Belt sway switches 5 % of each type
iii Pull cord switches 10 % of each type
iv Zero speed switches 10 % of each type
v Chute block switches 10 % of each type
vi Position switches for trippers,
paddle feeders
5 % of each type
vii thruster brake assembly with drum 1 set of each type
viii Drive assembly of cable reeling
system
1 set of each type
C Crushing equipment
i Motor of crusher 1 No of each type
ii VGF/VSF Drive Motor 1 No of each type
D Stacker reclaimer
i Motor 1 No of each type
ii Flexible cable(CCRD,PCRD) One length od each
type
iii Drive assembly of cable reeling
system
1 set of each type
iv Electric cards, modules one no. of each type
E Wagon tippler and accessories
i Drive Motor 1 No of each type
ii Tripper Drive motor 1 No of each type
iii Tripper Flexible cable 1 length of each type
iv Tripper Drive assembly of cable
reeling system
1 set of each type
4 Cooling Tower (IDCT)

19
A Mechanical /Electrical (Drive)
items (for each unit cooling
towers)
i Drive Shaft assembly complete with
balanced couplings with all the
fasteners
1 Set of each type
per unit
ii Complete fan and hub assembly
matched and balanced
1 set of each type
per unit
iii Complete gear box 1 no of each type per
unit
iv Internals of gear box including
bearings
1 set of each type
per unit
v Butterfly valve complete assembly
for cell isolation
1 no. per unit
vi Tower Internals :
a) Water spray nozzle One cell population
b)Fills (other than concrete fills) One cell population
c) Drift eliminator One cell population
d)Internal distribution pipes, end
caps and couplings
One cell population
vii C.T. Fan drive motor 1 no.
viii C.T. Fan drive motor bearing 1 set of each type
ix Fan drive coupling set or V belts 1 set per unit
x Oil seal (each type) 1 set per unit
5 Compressed Air System
i HP assembly 1Set of each type
ii LP assembly 1 set of each type
iii Suction valve assly 4 set of each type
iv Discharge valve assly. 4 set of each type
v Motor 1 no. of each type
vi Oil pump assly 1 set of each type
vii Valves of cooling water system 1 set of each type
viii Bearing for compressor 1 set of each type
ix Piston HP 1 set of each type
x Piston LP 1 set of each type
xi Crank shaft assy 1 set of each type
xii Connecting rod 1 set of each type
xiii Piston Ring, Guide Ring 1 set of each type
xiv Pnuematic valves of different size
for compressed air line
10 set of each type
xv Oil Filter 1 set of each type
xvi Bearing 1 set of each type
xvii Suction air filter 1 set of each type

20
6 HVAC System
i Suction filter of AHUs 1 set for each type
ii Heapa/MICRO FILTER 1 Set for each type
iii AHU Blower & Motor 1 Set each type
iv Refrigerant pump with motor for
VAM
1 Set for each type
v Absorbent pump with motor for
VAM
1 Set for each type
vi Suction valve assembly for
compressor
2 set for each type
vii Discharge valve assembly for
compressor
2 set for each type
viii Bearing for compressor 1 set for each type
ix Piston HP 1 set for each type
x Piston LP 1 set for each type
xi Motor for compressor 1 no. for each type
xii V belts 1 set of each type
xiii Steam pressure control valve in
VAM
1 no. for each type
xiv CT fills for HVAC system 1 set for 1 CT
population
xv HVAC CT gear box internal gear
set
1 set for each type
xvi HVAC CT gear box bearing 1set for each type
xvii Lithium Bromide 1 fill
xviii Freon/equivalent Gas 1 fill for a
compressor
7 Ash Handling Plant
i Clinker grinder/slag crusher
assembly including its motor
1 set for units
having 100% SC
2 sets for units
having 50% SC
ii Grinding Rolls of Clinker grinder/
slag crusher
1 set per unit having
100% SC
2 sets per unit
having 50% SC
iii Bearings with plumber blocks of
Clinker grinder/ slag crusher
100% SC
2 sets per unit
having 50% SC
iv Gear Box for clinker grinder/ slag
crusher
1 sets for unit having
100% SC
50% SC

21
v Internals including gear set,
bearings of Gear Box for clinker
grinder/ slag crusher
2 set for unit having
100% SC
50% SC
vi Scrapper Conveyor chain 2 set for unit having
100% SC
50% SC
vii Scrapper bars complete with fixing
lugs, guide pulley assembly with
shaft, bearings etc ,drive end
1 set for units
having 100% SC
sprockets, sprocket segments 2 sets for units
having 50% SC
viii Bottom ash hopper cooling pipe
fittings, inspection/manhole glasses
and nozzles for all hoppers of one
unit
1 set
ix Fluid coupling for SSC/clinker
grinder
2 set of each type
x Screw conveyor assembly 1 set
xi Flights for Screw Conveyor 2 sets
xii Bottom ash transfer pump
assembly with motor
2 sets
xiii Jet pump assembly 1 sets per unit
xiv Ash slurry disposal pump assembly
complete
One set of each
type
xv Fluid coupling with scoop control
for Ash slurry disposal pump
1 set of each type
xvi Gear box for Ash slurry disposal
pump
1 set of each type
xvii Internals of gear box 1 set of each type
xviii V-belt 2 sets of each type
xix Impellers, Liners (Volute & suction /
discharge)
One set of each type
xx Pump Bearings, sleeves, bearing
housing
2 sets of each type
xxi Seal water pump assembly
including its motor
1 set for each type
xxii Ash water pump assembly
including its motor
1 set for each type
xxiii Ash water pump bowl assembly &
bearing housing assy (for vertical
pumps) or rotating assy with
bearings (for horizontal pump)
1 set for each type

22
xxiv Vacuum pump assembly including
its motor
1 set per unit
xxv Ash water line valves (above 100
NB)
2 nos of each type
xxvi Ash Slurry line valves 2 nos of each type
(knife valve) 1 nos of
each type (plug
valve)
xxvii Ash feed valves below ESP
hoppers
10% of total
population
xxviii ESP hoppers & buffer hoppers
level indicators (High &Low)
10% of total
population
xxix Fly ash isolation valves (Each type) 10% of total
population
xxx Jetting nozzles (each type) for ash
handling applications such as
flushing box, sluice trench, wetting
head, air washer unit etc
10% of total
population
xxxi Fly ash conveying line
couplings(each type)
10% of total
population
xxxii Bag filters (for buffer hoppers &
Silos)
1 set of each type
xxxiii Ash slurry disposal pipe
10 % of total
population
xxxiv Fly ash pneumatic valves (each
type)
5 % of total
population
xxxv Ash Slurry Pipelines 10 % of each type of
total population
xxxvi Refractory 10 MT
8 ELECTRICAL
8.1 Spares For 400 KV/220 KV/132
KV Switchyard Equipment
A Circuit Breakers
i One complete pole of circuit
breaker along with terminal
connectors
1
ii One Complete breaker, 3 Poles
along with drive unit, marshalling
box & terminal connectors
1 no.
iii Relays, power contactors, switch-
fuses for electrical control circuit
(one set consisting of one no. each
of all types for one circuit breaker)
1 set
iv Set of gaskets, rings & seals 1 set
v Molecular filter for Circuit breaker 1 set
vi Insulating nozzle 1 Nos.

23
vii Circuit breakers support insulator
stack
1 set
viii Tripping and closing coil (one set
consisting of one no. each of all
types)
3 sets
ix Density monitoring system for ckt.
Bkr.
1 sets.
x Spring charging motors (if
applicable)
1 no.
xi Set of Valves for pneumatically
operated circuit breaker
1 set
xii Pressure switch set for
pneumatically operated circuit
breaker
1 set
xiii Fixed and moving arcing contact 1 sets
xiv Circuit breakers terminal
connectors (one set means one
no. of each type and rating)
1 set
xv SF6 Gas filling Valve (DILO) 1 no.
xvi SF6 gas 3 Cylinders
B Isolators
i One complete pole of HCB isolator
with 2 E/S along with operating
mechanisms, etc.( without
Structure)
1no
ii One complete pole of Pantograph
isolator along with operating
mechanisms, etc.( without
Structure)If applicable
1no.
iii Copper contact fingers for female
contacts
6 nos.
iv Relay, power contactors, switch
(one no. of each type and rating for
one isolator)
1 set
v Support insulator stack for one pole
of HCB isolator
1 no.
vi Rotary bearings for isolator 3 nos.
vii Limit switch & aux. Switch 6 nos.
viii Isolator terminal connectors(one
set means one no. of each type
and rating)
1 set
C Current Transformer Complete In
All Respects Including Terminal
Connectors .
3 no.
D Capacitor Voltage Transformer
Complete In All Respects
Including Terminal Connectors .
3 no.

24
E Surge Arrester Complete In All
Respects Including Terminal
Connector And With Surge
Counter And Lead.
3 no.
8.2 Spares For 765 KV Switchyard
Equipment
A Circuit Breakers
i Complete three pole circuit breaker
without closing resistor with support
structure, interrupting chamber,
pole column, operating mechanism,
controlled switching, terminal
connector etc.
1 No.
ii Complete three pole circuit breaker
with closing resistor, interrupting
chamber, pole column, operating
mechanism (without support
structure)
2 Nos.
(consisting of one no. each of all
types and ratings)
2 sets
iv Set of gaskets, rings and seals. 3 sets
v molecular filter for circuit breakers 6 sets
vi Insulating nozzle 1 Nos.
vii Tripping and closing coil( each
type)
12 Nos.
viii Density monitoring system for
circuit breakers
2 Nos.
ix Spring charging motors(if
applicable)
6 Nos.
x Fixed and moving arcing contact 1 sets
xi Terminal connector(of each type) 3 Nos.
xii SF6 Gas filling Valve (DILO) 1 no.
xiii SF6 gas 3 Cylinders
B Isolators
i Complete three phase isolator with
one E/S with insulator along with
operating mechanism, terminal
connector etc. (without support
structure)
1 No.
ii Complete arm assembly for isolator 1 No.
(one no. of each type and rating)
3 sets
iv Support insulator stack for one pole 1 Nos.

25
v Operating mechanism box for
Isolator and E/S
1 Nos.
vi Rotary bearings for isolator 3 Nos.
vii Limit switch and auxiliary switch 9 Nos.
viii Terminal connectors 2 nos. of each type,
make and model
C Current Transformer
i Complete in all respects including
terminal connectors, common box
etc.(excluding structure)
4 Nos.
D Capacitor Voltage Transformer
i Complete in all respects including
terminal connectors, common box
etc.(excluding structure)
(a) 4400 pF 3 Nos.
(b) 8800 pF 1 Nos.
E Surge Arrester
i Complete in all respects with surge
counter etc. (excluding structure)
2 Nos.
8.3 Spares For 765/400/220/132 KV
Switchyard Equipments
i Double Tension string insulator
assembly with double anchoring
points with antifog type disc
insulators per string with all
hardware accessories including
arcing horn and tension clamp set
suitable for ‘Twin Moose” ACSR
conductor with sub-conductor
spacing (sets)
a) with turn buckle
Insulator 1 set
Hardware 1 set
b) without turn buckle
Insulator 1 set
Hardware 1 set
ii Single Suspension String insulator
assembly with antifog type disc
insulators with all hardware
accessories including arcing horn
with
a) Drop clamp set suitable for twin
“Moose” ACSR with sub conductor
spacing (sets)
Insulator 2 set
Hardware 2 set

26
b) Through clamp set suitable for
twin “Moose” ACSR with sub
conductor spacing (sets)
Insulator 1 set
Hardware 1 set
iii Double Tension string insulator
assembly with double anchoring
points with antifog type disc
insulators per string with all
hardware accessories including
arcing horn and tension clamp set,
sag compensating spring suitable
for Quad ACSR moose conductor
a) with turn buckle
Insulator 2 set
Hardware 2 set
b) without turn buckle
Insulator 2 set
Hardware 2 set
iv Buspost insulator clamp suitable for
Al. Tube Rigid/sliding (Nos.)
2 Nos.
v Buspost insulator clamp suitable for
Al. Tube to accommodate welding
sleeve (nos.)
4 Nos.
vi Buspost insulator clamp suitable for
Al. Tube Expansion type (Nos.)
1 No.
vii Buspost insulator clamp suitable for
Twin Moose ACSR conductor.
(Nos.)
1 No.
viii Interconnector for Al. Tube to twin
moose ACSR conductor (nos.)
1 No.
ix Welding sleeves for Al. Tube (nos.) 10 Nos.
x TEE connector for ACSR moose
twin to Quad Moose
6 nos.
xi PG clamp for Quad ACSR Moose 2 Nos.
xii T-clamp suitable for single ACSR
Moose to single ACSR Moose
(Nos.)
6 nos.
xiii PG clamp suitable for ACSR
Moose to Moose (Nos.)
1 No.
xiv Spacers for ‘Twin Moose’ ACSR
with sub-conductor spacing (Nos.)
Flexible/Rigid
80 Nos.
xv Spacers for ‘Quad’ ACSR Moose
conductor (Nos.) Flexible/Rigid
30 Nos.

27
xvi Earth wire tension clamps with D-
Shackle assembly (Nos.)
2 Nos.
xvii T-clamp for GS earth wire of 2 Nos.
xviii Pad type compressive clamp for
earth wire down conductor(Nos.)
2 Nos.
xix Corona bell to suit Al. Tube (nos.) 1 No.
8.4 Spares For GIS
A Gas insulated switchgear
i SF6/XLPE cable terminations
complete with gasket and
connectors.
1 No.
ii Circuit breaker complete with
operating mechanism, all
necessary apparatus and
preinsertion resistors etc. for line
breakers.
1 No. of each type
and rating
iii Disconnecting switch complete with
operating mechanism & all
necessary apparatus etc.
1 No. of each type
and rating
iv Safety grounding switch complete
with operating mechanism, all
necessary connecting apparatus.
1 No.
v High speed fault making grounding
switch complete with operating
mechanism, and all necessary
apparatus.
1 set
vi VT complete with all accessories of
connectors etc.
1 No.
vii Current transformer 3 Nos. of each type&
rating
viii Single phase SF6 gas insulated
zinc oxide surge arresters
3 Nos.
ix Gas monitoring devices complete
with all necessary accessories.
3 Nos. of each type
& rating
x Control switches & control relays
(One of each type and rating)
1 set
xi Control circuit fuses 10 % of total
population
xii Pilot lamp bulbs 10 % of total
population
xiii Closing coils for circuit breakers 3 Nos.
xiv Trip coils for circuit breakers 6 Nos.
xv Spare auxiliary contacts for
disconnecting and safety grounding
switches.
1 No. of each type
xvi MCBs 1 No. of each type &
rating

28
xvii Semaphore 6 Nos.
8.5 Spares For Control & Relay
Panels
A Protective relays
i Numerical relays for Shunt
reactors, Tie transformer,
Generator, GT & UAT protection
(one of each type)
1 set
ii Numerical distance protection
relays for EHV line( one of each
type)
1 set
iii Auto reclose relay 1 No.
iv Numerical breaker fail protection
relay( in case of standalone)
1 No.
v High speed trip relays( one of each
type and rating)
1 set
vi Trip circuit supervision relay ( in
case of standalone)
2 Nos.
vii Aux. Flag relays( one set means
one of each type and rating)
2 set
viii Coupling relays(one of each type
and rating)
2 set
ix Any other relay used in the
scheme( one of each type and
rating)
1 set
x Under frequency relays for
islanding scheme
1 no.
xi Event logger modules( set means
one module each of each type)
1 no.
B Indicating meters
i Voltmeter(one of each type and
range)
1 no.
ii Ammeter(one of each type and
range)
1 no.
iii MW meter(one of each type and
range)
1 set
iv MVAR meter(one of each type and
range)
1 set
v Voltage transducer suitable for
voltmeter (one of each type and
range)
1 set
vi Current transducer suitable for
Ammeter ( one of each type and
range)
1 set
vii MW transducer suitable for (c)
above) (one of each type and
range)
1 set

29
viii MVAR transducer ( suitable for (d)
above) (one of each type and
range)
1 set
ix Energy meter( ABT meter), class:
0.2
1 No.
x Energy meter ( the type mounted
in GRP)
1 No.
xi One card of each type and rating
for line (in case standalone) and
Generator disturbance recorder.
1 no.
C Others
i Control/ synchronizing switches
(one set means one of each type
and rating)
1 set
ii Semaphore indicators (one set
means one of each type
2 no.
iii Push buttons (One of each type) 1 set
iv Lamps & indicators ( one set
means one no. of each type)
1 set
v PTS switch 1 No.
vi Annunciation relay/ card 1 set
vii Synchronizing socket(as provided
in the control panels)
1 No.
viii Aux. CTs & aux. PTs, if provided in
the scheme( one set means one
no. of each type and range)
1 set
ix Engineering workstation 1 No.
x Ethernet switch(in case
standalone)
1 No.
D Substation automation system
and generator protection (If
applicable)
i Bay control unit(Complete with all
units)
2 No.
ii Numerical relays comprising
various bay protection units
1 No. of each type
iii Generator protection
relays(Numerical)
1 No. of each type
iv Interface relays used in the system 1 no. of each type
v Operator Work station(OWS)
alongwith software, monitor,
mouse, keyboard etc.
1 No.
vi Complete network Controller/
Server alongwith software
1 No.
vii Complete programming station
along with software, monitor etc.
1 No.
viii Hard disks for OWS 1 No.

30
ix Hard disk for network Controller/
Server (if applicable)
1 No.
x Lamps/LEDS used in the system 10% of total quantity
xi Power supply modules used in the
system
2 Nos. of each type
xii LAN switches(if included in main
package)
1 No. of each type
xiii Media cleaning solutions 2 Bottles
xiv Fuses 100% of each type &
rating
xv Terminal blocks 2 Nos. of each type,
make model and
rating
xvi Interface cables containing
standard length of each type of
cable and its connectors for each
type of peripheral
2 sets
xvii MCBs 50% of each type,
make and model
xviii Relays other than Numerical relays 1 No. of each type
8.6 Spares For GT/ICTS/ST/UAT
i HV Bushing with metal parts and
gaskets
3 Nos.
ii LV Bushing with metal parts and
gaskets
3 Nos.
iii Neutral Bushing with metal parts
and gaskets
2 Nos.
iv WTI with contacts 1 No.
v OTI with contacts 1 No.
vi Pressure relief device 1 No.
vii Magnetic oil gauge 1 No.
viii Buchholz relay complete 1 No.
ix Oil surge relay 1 No.
x Oil flow meter 1 No.
xi Set of gaskets 1 Set
xii Set of valves 1 Set
xiii Cooler fan with motor 2 Nos.
xiv Oil pump with motor 2 Nos.
xv Air cell for conservator 1 No.
xvi Set of OLTC contacts 1 Set
xvii Transformer oil One fill for
transformer of
highest
capacity(volume)

31
8.7 Spares For Any Misc. Service
Transformer
gaskets
1 No. of each rating
ii LV Bushing with metal parts and
gaskets
iii Neutral Bushing with metal parts
and gaskets
iv WTI with contacts 1 No.
v OTI with contacts 1 No.
vi Pressure relief device 1 No.
vii Magnetic oil gauge 1 No.
viii Buchholz relay complete 1 No.
ix Set of gaskets 1 Set
x Set of valves 1 Set
xi Air cell for conservator (If
applicable)
1 No.
8.8 Spares For Dry Type
Transformer
i HV Bushing 1 No.
ii LV Bushing 1 No.
iii Neutral Bushing 1 No.
iv Complete winding limb (HV and LV) 1 No.
v WTI (If applicable) 1 No.
vi Set of Thermisters /RTD with
associated leads complete for one
Transformer
1 No.
8.9 Spares For Shunt Reactor
gaskets
1 No.
ii Neutral Bushing with metal parts
and gaskets
1 No.
iii WTI with contacts 1 No.
iv OTI with contacts 1 No.
v Pressure relief device 1 No.
vi Magnetic oil gauge 1 No.
vii Buchholz relay complete 1 No.
viii Set of gaskets 1 Set
ix Set of valves 1 Set
8.10 Spares for Neutral Grounding
Reactor
i Main Bushing with metal parts and
gaskets
1 No.

32
ii Neutral Bushing with metal parts
and gaskets
1 No.
iii OTI with contacts 1 No.
iv Pressure relief device 1 No.
v Oil level gauge 1 No.
vi Buchholz relay complete 1 No.
vii Set of gaskets 1 Set
8.11 Spares for 200 MW/500 MW/660
MW unit SG
A VFD system
i Variable Frequency Drive Assly 1 set
ii Electronic cards
(a) Control modules 1 nos. of each type &
rating
(b) I/O module 1 nos. of each type &
rating
(c) Power supply modules 1 nos. of each type &
rating
(d) Thyristor gate module including
gate transformer
100% of one channel
(e) Exciter module 1 no.
iii Thyristor bridge leg 1 no.(Qty. for one
ph.)
iv Over voltage limiter and surge
suppressor network
1 set
v Semi conductor fuses for thyristor 1 set
vi Power & Control fuse 25% of installed
quantity
vii Control Transformer 1 nos. of each type &
rating
viii Contactor/Breaker 1 no.
ix CT/VT 1 nos. of each type &
rating
x Indicating lamps 100% of each type &
rating
xi Auxiliary contactors & relays 1 no. of each type &
rating
xii Panel mounted meters 1 no. of each type &
rating
xiii Panel mounted printer 1 no.
xiv Indicating lamp holder full set 15% of each type
and colour
xv Parameter Tuning device 1 no.
B VFD transformer
i VFD Transformer, one of each type
and rating
1 set

33
ii Bushings with metal parts and
gaskets
(a) Primary 1 no. each rating
(b) Secondary 1 no. each rating
iii Winding temperature indicator with
alarm & trip contacts
1 no.
iv Oil temperature indicator with alarm
& trip contacts
1 no.
v Magnetic oil level gauge 1 no.
vi Pressure relief device 1 no.
vii Diaphragm for explosion vent 1 no.
viii Buchholz relay/sudden pressure
relay
1 no.
ix Silca gel charge 1 no.
x Set of gaskets 1 set
xi Contacts tap changer 1 set
xii Set of valves (1 no. of each size) 1 set
xiii Pressure gauge (applicable for
sealed tank)
1 no. each type
C L.T. MCCs (SB MCC)
i Instrument Transformers
(a) Current transformers 1 no. of each type &
rating
(b) Voltage transformers 1 no. of each type &
rating
ii Meters
(a) Ammeters 1 no. of each type &
range
(b) Voltmeters 1 no. of each type &
range
iii Relays (Protection, aux.
relays,Interposing relays, overload
relays & timer etc.)
1 no. of each type
iv (a) Contactors and auxiliary power
controller.
3 no. of each type &
rating
(b) Coil for the above 3 nos
(c) Main & auxiliary contacts for the
above
3 sets
v Air breaker switches 2 nos. of each rating
vi Control switch and selector
switches
1 nos. of each type &
rating
vii (a) Indicating lamps 5% of installed
capacity
(b) Indicating lamp covers of
different colours, lamp resistors &
holders.
5% of installed
capacity

34
viii Primary disconnect (Power) for
MCC Module complete set
1 no. of each rating
ix Push buttons of various colours 5% each type &
colour.
x Maintenance tools and accessories
for maintenance
2 nos.
xi Control supply transformers 1 no. of each rating
D Electrostatic precipitator (ESP)
i Support insulator 4 nos.
ii Shaft insulator 6 nos.
iii Emitting electrodes
(a) Helical wire type 5% of the installed
quantity in one ESP
(b) Wire pipe in rigid frame 10% of the installed
quantity in one ESP
(c) Mast type 2% of the installed
quantity in one ESP
iv Collecting electrode 2% of the installed
quantity in one ESP
v Inner arm assembly 20 nos. each for
collecting & emitting
system.
vi Outer arm assembly 10 nos. each for
collecting & emitting
system.
vii Plain bearing 20 nos. of each type
& size.
viii Shock bar/anvil 20 nos. of each type
& size.
ix Rappers
(a) For electric rappers
(i) Assembled rapper/drop
rods
20 nos. of each type
& size.
(ii) Coil assembly along with
sleeve
4 nos.
(iii) Casing 4 nos.
(iv) Gaskets & packing 10 nos. of each type
& size.
(b) For tumbling rappers
(i) Hammers 20 nos. of each type
& size.
(ii) Bearing components 4 nos.
(iii) Shafts 4 nos.
(iv) Gear motors 4 nos.
x Transformer rectifier set

35
(a) Transformer rectifier set
(Complete)
2 no.
(b) High voltage insulator 2 no.
xi Gaskets( One set means one
complete replacement for one TR
sets, one ESP)
1 set
xii Control system
(a) Transformer-rectifier set
controller
1 no.
(b) Rapper controller complete 1 no.
(c) Communication controller
complete
1 no.
(d) Electronic cards:
(i) For rapper controller &
ESP management system
1 set
(ii) For transformer rectifier
controller
1 set
(e) Display unit 1 no. of each type
(f) Keyboard 1 no. of each type
(g) Push buttons for
(i) TR set controller 2 sets
(ii) Others 1 set
(h) Indicator lamps 1 set
(i) Control fuse 25% of installed
quantity
(j) Power fuse 25% of installed
quantity
(k) Thyristor fuse 1 set
(l) Thyristor of transformer
controller rectifier
2 sets
(m) Auxiliary Control Panel (ACP) *
(i) Breaker 1 no.
(ii) Power contacts 1 set
(iii) Auxiliary relays 1 set
(iv) Over load relay 1 set
(v) Power fuse 1 set
(vi) Control fuse 1 set
(vii) Control terminal block 1 set
E ID Fan
i ID fan motor 1 no.
ii ID fan motor bearings 1 set
F ID Fan lube oil system
i Pump motor and bearing. 1 no. of each type &
rating

36
G FD Fan
i FD fan motor 1 no.
ii FD fan motor bearings 1 set
H FD Fan lube oil system
rating
I PA Fan
i PA fan motor 1 no.
ii PA fan motor bearings 1 set
J PA Fan lube oil system
rating
K Seal air fan
i Seal air fan motor 1 no.
ii Motor bearing 1 set
L Mill motor and APH motor
i Mill (pulveriser) motor 1 no.
ii Pulverisers motor bearing 1 set
iii Pulveriser lube oil motor and
bearing
2 nos.
M Air pre heater motor 1 no.
i Air motor and bearing 1 no.
ii APH lube oil motor and bearing 1 no.
iii Scanner motor and bearing. 1 no.
iv Actuators One of each type
v Actuators for Atomizing steam
presurre reducing valve and Heavy
oil temperature control valves.
One of each type
N Soot blowers
i Motor for water wall deslaggers and
motor bearing
One of each type
ii Motor for long travel retractable
soot blower and motor bearing
1 No.
iii Complete motor for air preheater
soot blower and motor bearing
1 No.
iv Complete power pack assembly for
Long Retractable soot blower
(One no. for rotrary +
One no. for
transverse)
v Spare set of rotary & transverse
chain for long retractable soot
blowers (for dual motor type)
One of each type &
size
O Electrical actuators
i Actuators and actuator bearings One of each type &
size

37
ii Power unit for modulating actuator One of each type &
size
iii DC-DC unit/power pack units One of each type &
size
iv Electronic cards 1 set
v Position feed back transmitters One of each type &
size
vi Control unit 1 no.
vii Torque and limit switch assembly of
each unit
1 no.
8.12 Spares for 200/500/660 MW Unit
TG
A Generator & auxiliaries
i Gaskets/ O rings/ Cords of all types
(one set should include all types
and sizes of gaskets for one
generator, hydrogen seals for TG
and EE hydrogen coolers)
1 set
ii (a) Insulating packer below slot
wedges.
10% of the installed
quantity
(b) Ripple springs 10% of the installed
quantity
(c) Insulating material below the
retaining rings
(i) Liners 1 set
(ii) Coil spacers 1 set
iii (a) Generator bearings for TE and
EE 1set (complete with torous,
intermediate pieces and all other
fixing/assembly/ insulating material
required to complete one TG unit
except housing)
1 set
iv Oil guard rings spare for TE and EE
bearings
1 set
v Stator winding bars and
connections (one set comprising of
two bars of each variant) not
applicable for VPI machine or
machine with moulded overhang.
1 set
vi Generator Rotor fan/ compressor
blades (Fixed blades & moving
blades )
1 set
vii Slot wedges 10% of the installed
quantity
viii Hydrogen Seal Assly( O
ring,gaskets,insulating sleeves,
bush)
1 set

38
ix Tube nest for Hydrogen
cooler/stator cooler/Seal oil cooler/
exciter cooler
1 no. of each type
x Hydrogen seals rings TE, EE 1 set each
xi Teflon Hoses with connectors (for
stator water cooling system)
3 nos. of each type.
xii NGT for Generator 1 No.
xiii Generator phase and neutral
bushings complete for one machine
1 set
xiv Brush- holder assembly with
housing for exciter for rotor winding
E/F sensing (if applicable)
1 set
xv Brush- holder for exciter for rotor
winding E/F sensing (if applicable)
for one machine
1 set
xvi Slip ring assembly complete 1 set
xvii Oil catcher fins 1 set of each type
xviii Nut and bolts for generator 25% of total
population of each
type
xix CC bolts assembly 1 set of each type
xx CC bolts washer 2 sets
xxi Insulating sleeves and washer 25% of total
population of each
type
xxii Brush holder with brushes for slip
ring (if applicable)
Min. 2 sets
xxiii Brush- holder assembly for shaft
earthing
2 nos.
xxiv Brushless Excitation system (if
applicable)
(a) Relays 1 no. of each type
(b) Electronic modules of automatic
voltage regulator
1 no. of each type
(c)Control transformer of each
type/rating
1 set
(d) Rotating Diode assembly with
heat sinks, RC network and fuses
25% of one unit
(e) Thyristor assembly with
semiconductor fuses
100% for one
channel
(f) DC field breaker 1 no.
(g) Over voltage suppressor
(Thyristor based)
1 set
xxv Static excitation system (if
applicable)
(a) Static rectifier element with heat
sink and fuse assembly
100% of one bridge

39
(b) Relays 1 no. of each type
(c) Electronic modules of automatic
voltage regulator
1 no. of each type
(d) Excitation Transformer 1 no.
(e)Shunt trip and closing coil for
field circuit breaker
2 set
(f) Initial excitation diode 2 set
(g) Thyristor cooling fan 1 set complete for
one unit
(h) Complete DC field breaker 1 no.
(i) Field flashing breaker 1 no.
(j) Over voltage suppressor 1 set
(k) Control transformers of each
type/rating
1 set
B Gas system
i Diaphragm valve 1 no. of each type
ii Gas valves of all type & sizes 1 no. of each type &
size
iii Valves for H2 & CO2 manifolds 10 nos.
iv Safety valve 1 no.
v H2 gas regulator from cylinder to
manifold
10 nos.
vi CO2 gas regulator from cylinder to
manifold
3 nos.
vii Bearings & seals for fan and gas
drier
1 set
viii Thermostat for gas drier 1 no.
ix Compressor for refrigerant type
drier
1 set
x Thermometers 1 no. of each type &
range
xi Filter for gas analyser 2 sets
C Seal oil system
i Complete motor and Pump
assembly for AC seal oil pump
1 no. of each type
ii Motor pump set for DC seal oil
pump
1 set
iii Pump and motor bearings 1 set
iv Vacuum pump spares (1 set
bearing rotor with shaft, gas ballest
valve gaskets. 'O' rings, felt filters,
other filter elements)
1 set
v Vacuum pump assembly 1 set
vi Differential pressure regulator 1 no.
vii Pressure equalizing valve (if
applicable)
1 no.

40
viii Non-return shut off valves 1 set
ix Float valve 1 no. of each type
x Non-return valve 1 no. of each type
xi Filter elements 1 no.
xii Vacuum pressure gauge 1 no. (if applicable)
xiii Differential pressure gauge 1 nos.
xiv Bellow for differential pressure
regulator
1 no. of each type
D Stator water cooling system
i Stator water pump motor assly 1 set
ii Float for level regulator 1 no. (if applicable)
iii Filter elements 1 set
iv S.S. 3 way cock 1 no.
v Specific resistance measuring 1 no.
vi Insulators for stator water header 1 set
E EOT crane for turbine hall
i Solenoid Coils for Brakes 2 sets
ii MCBs/MCCBS/Fuse links for the
whole crane
1 set
iii Contactors and overload Relays 1 set of each type,
size & rating
iv Motors of the EOT 1 set of each type,
size & rating
v Timers of each type,size & rating 1 set
vi Limit Switches for
(a) Main Hoist 1 set
(b) Aux. Hoist 1 set
(c) Cross Traverse 1 set
(d) Long Travel 1 set
vii Carbon brushes & brush holders 1 set
viii Master Controller for Aux. Hoist, 1 set
ix Resistance Box 1 No of each type.
F EOT crane for turbine hall (VFD
drive)
i Solenoid Coils for Brakes 2 sets
ii MCBs/MCCBS/Fuse links for the
whole crane
1 set
iii Contactos and overload Relays for
Motors of the EOT
1 set of each type,
size & rating
iv Timers of each type, size & rating 1 set
v Limit Switches for
(a) Main Hoist 1 set
(b) Aux. Hoist 1 set

41
(c) Cross Traverse 1 set
(d) Long Travel 1 set
vi Master Controller for Aux. Hoist 1 set each
vii Drive for MH,AH,CT&LT 1 no. of each type&
rating
G Hydrogen generation plant
i Motor for compressor 1 no
H Motors
i Condensate Extraction Pump motor
and motor bearing
1 no.
ii Boiler Feed Pump motor (BFP) and
motor bearing
1 no.
iii ACW Pumps and DMCW Pumps
motor and motor bearing
1 no. each
iv DM Water Regeneration Pumps
motor and motor bearing
1 no.
v Alkali Transfer cum Recirculation
Pump motor and motor bearing
1 no.
vi Waste recirculation cum Disposal
Pumps motor and motor bearing
1 no.
vii DC Motor and motor bearing 1 no of each type
viii Acid Unloading Pumps (if included
in scope) and motor bearing
1 no.
ix AC AOP motor for main turbine and
motor bearing
1 no.
x AC AOP motor for TDBFP and
motor bearing
1 no.
xi AC JOP motor for main turbine and
motor bearing
1 no.
xii AC JOP motor for TDBFP and
motor bearing
1 no.
xiii MDBFP lub oil pump motor and
motor bearing
1 no.
xiv Vacuum pump motor and motor
bearing
1 no.
8.13 Spares For GCB
i Fixed arcing contact 1 no.
ii Moving arcing contact with contact
base
1 no.
iii Fixed load contact 1 no.
iv Moving load contact 1 no.
v Operating mechnism rod/shaft 1 no.
vi Closing coil 3 nos.
vii Tripping coil 3 nos.
viii Closing spring (if applicable) 1 no.

42
ix Tripping spring (if applicable) 1 no.
x Circuit breaker auxiliary contacts 1 no.
xi Gaskets 1 set for a breaker
xii Limit switches 1 set for a breaker
xiii Guide for moving contact set 1 no.
xiv Support insulators 1 no.
xv Bus seal off bushings 1 set for a breaker
xvi Upper and lower terminals with
finger contact device
1 set upper & 1 set
lower
xvii Arc extinction coil 2 nos.
xviii Current transformers protection 3 nos. of each type
xix SF6 cylinders 3 nos.
xx Auxiliary switches 2 sets
xxi Complete pole assembly (along
with internally mounted equipment)
1 no.
xxii Drive assembly complete for GCB 1 set
xxiii In case of SF6 GCB
(a) Gas density switch 1 no.
(b) Gas pressure guage 1 no.
(c) Gas density indicator 1 no.
(d) Absorbent 3 nos.
(e) Teflon hoses for one
replacement in all the six poles of
breakers
1 set
8.14 Spares For Busduct
A Generator bus duct
i Bus support insulator 40 Nos.
ii Flexible equipment terminal
connector complete with hardware
complete for one machine (for three
phases/neutral)
(a) Generator 1 Set
(b) Generator transformers 1 Set
(c) Unit transformers 1 Set
(d) PT & SP cubicle tap off 1 Set
iii Seal off bushings suitable for
(a) Main run 3 Nos.
(b) Tap off run 3 Nos.
iv Rubber belows
(a) Main run 1 Nos.
(b) Delta run 1 Nos.
(c) Tap off run 1 Nos.

43
v Current trans formers
(a) Main run CTs of each type &
rating
3 Nos.
(b) Tap-off run CTs of each type &
rating
3 Nos.
vi VT & SP Cubicles
(a) Lightning arrestor 3 Nos.
(b) VT for metering & protection 3 Nos.
(c) VT for AVR/EHG/Syn. 3 Nos.
(d) VT for performance test, EHG
and AVR system
3 Nos.
(e) Surge capacitor 3 No.
B 11 kV Busduct
i Support insulators 25 Nos.
ii Three phase set of flexible terminal
connectors for switchgear end of
each type & rating
1 set
iii Three phase set of flexible terminal
connector for transformer end of
each type & rating
1 set
iv Seal off bushings of each type &
rating
3 nos.
C 6.6 kV Busduct
each type & rating
1 set
each type & rating
1 set
rating
3 nos.
D 3.3 kV Busduct
each type & rating
1 set
each type & rating
1 set
rating
3 nos.
8.15 Spares For 33
KV/11KV/6.6KV/3.3KV
Switchgears
A 33 KV switchgears

44
i Breaker of each rating 1 no. breaker of
each type and rating
ii Spring charging motor complete 2 Nos. of each type.
iii Shunt trip coil 2 Nos. of each type
& rating
iv Closing coils 2 Nos. of each type
& rating
v Current transformer of each type &
ratio
1 Nos. of each type
vi Potential transformer of each type
& ratio
1 Nos. of each type
vii Numerical relays 1 no. of each type
viii Aux. Relays/ Lock out relays/
Timers
2 Nos. of each type
ix Moving contact assembly of each
rating
1 set
x Stationary (fixed contact of each
rating.
1 set
xi Bus seal off bushings 3 nos. of each type &
size
xii Bus bar support insulators 3 Nos.
xiii Limit switches 6 Nos.
xiv Closing spring 1 Nos. of each type
xv Tripping spring 1 Nos. of each type
xvi Control switches 2 Nos. of each type
xvii Selector switches 2 Nos. of each type
xviii Isolation switch for the control
supply
2 Nos.
xix operating mechanism rod for each
rating
1 set
xx Energy meter of each type & range 1 Nos. of each type
xxi Circuit breaker auxiliary contact
assembly
2 Nos. of each type
& rating
xxii Indicating lamps with holders 10 set
xxiii Fuse base and holder 10 Nos.
xxiv Fuse link 10 Nos.
xxv Isolating contact ( fixed & moving) (
one set means male & female
contacts of one complete breaker)
1 set of each rating
xxvi Terminal blocks 2 Nos.
xxvii SF6 cylinder with SF6 gas filled
alongwith nozzle for filling the gas(if
applicable)
1 No.
xxviii Multiple pin plug contact assy. with
cables (male & female)
3 Nos.

45
xxix Guide for moving contact set( one
set means complete replacement
for one breaker)
1 set
xxx Interphase barrier 2 Nos. of each type
xxxi Pressure gauge ( for SF6 breakers) 2 Nos.
B 11 KV/6.6 KV/3.3KV switchgears
i Breaker of each rating 1 no.
ii Spring charging motor complete 2 Nos. of each type.
iii Shunt trip coil 5 Nos. of each type
& rating
iv Closing coils 5 Nos. of each type
& rating
v Current transformer of each type &
ratio
3 Nos. of each type
vi Potential transformer of each type
& ratio
3 Nos. of each type
vii Numerical relays 2 Nos. of each type
viii Aux. Relays/ Lock out relays/
Timers(if applicable)
2 Nos. of each type
ix Moving contact assembly of each
rating (One set means complete
replacement for one breaker)
2 sets
x Stationary (fixed contact of each
rating.(One set means complete
replacement for one breaker)
2 sets
xi Bus seal off bushings 3 nos. of each type &
size
xii Bus bar support insulators 12 Nos.
xiii Limit switches 10 Nos.
xiv Closing spring 1 set
xv Tripping spring 1 set
xvi Control switches 2 Nos. of each type
xvii Selector switches 2 Nos. of each type
xviii Isolation switch for the control
supply
2 Nos.
xix operating mechanism rod for each
rating
1 Nos.
xx Energy meter of each type & range 1 Nos. of each type
xxi Circuit breaker auxiliary contact
assembly
6 Nos. of each type
& rating
xxii Indicating lamps with holders 20 set
xxiii Fuse base and holder 12 Nos.
xxiv Fuse link 12 Nos.
xxv Isolating contact ( fixed & moving)(
one set means male & female
contacts of one complete breaker)
4 sets of each rating

46
xxvi Terminal blocks 6 Nos.
xxvii SF6 cylinder with SF6 gas filled
along with nozzle for filling the
gas(if applicable)
3 Nos.
xxviii Multiple pin plug contact assy. with
cables (male & female)
6 Nos.
xxix Guide for moving contact set( one
set means complete replacement
for one breaker)
1 set
xxx Interphase barrier 2 Nos. of each type
xxxi Pressure gauge ( for SF6 breakers) 2 Nos.
xxxii Vacuum Contactors with HRC
fuses
2 Sets (One set for
three phases)
xxxiii Surge arresters 3 Nos.
xxxiv Modules for Data Concentrator &
system LAN
1 No. module of
each type
8.16 Spares For 200/500/660 MW
Units LT SWGR And LT Busduct
i Complete breaker 3 Nos. of each type
& rating
ii Spring charging motors 3 Nos. of each type
& rating
iii Aux. Contact set 6 sets of each type &
rating
iv Limit switches 10 Nos.
v Arc chutes 4 Nos. of each type
& rating
vi Fixed contact set 6 sets of each type &
rating
vii Moving contact set 6 sets of each type &
rating
viii Arcing contact 6 sets of each type
ix Charging spring 4 Nos. of each type
& rating
x Current transformer 3 Nos. of each type
& ratio
xi Closing coil 12 Nos. of each type
& rating
xii Trip coil 12 Nos. of each type
& rating
xiii CT for Bimetal O/L relays 3 Nos. of each type
& rating
xiv Voltage transformer 3 Nos. of each type
& ratio
xv Control supply transformer 3 Nos.of each type
and rating

47
xvi Ammeter 2 Nos. of each type,
size & range
xvii Voltmeter 2 Nos. of each type,
size & range
xviii Relays 2 Nos. of each type
xix Power contactor 2 Nos. of each type
& rating
xx Coil of above contactor 2 Nos. of each type
& rating
xxi Air break switches 3 Nos. of each type
& rating
xxii DP air break switches(DC) 3 Nos. of each type
& rating
xxiii Control & selector switches 5 Nos. of each type
& rating
xxiv Control fuses & neutral links 100 nos. of control
fuses of each type
and rating, 25 nos. of
neutral links of each
type & rating.
xxv Indicating lamps 10% of total installed
population of each
type & rating
xxvi Bus bar support
insulators(Porcelain)
10 Nos.
xxvii Vertical bus bar dropper support
insulators(FRP)
25 Nos.
xxviii Bus duct flexible connectors 1 set for thee phases
of each type & size
xxix (a) Primary disconnect in MCC(
Bus bar end)(Male/female contact)
10% of total installed
population of each
type & rating
xxx (b) Secondary disconnect in
MCC(Cable end)
10% of total installed
population of each
type &
xxxi Push buttons 15 Nos.
xxxii Power fuses of each type and
rating
Min. 12 nos.
xxxiii Thermal Bimetal relays 10% of total installed
population of each
type & rating
xxxiv Current transducers 10% of total installed
population of each
type & rating
xxxv Voltage transducers 10% of total installed
population of each
type & rating
xxxvi Indication lamp holders complete 10% of each type &
rating

48
xxxvii Busbar aluminium flat pieces 12 meters of each
type & rating
xxxviii Busbar angles/formed pieces for
breaker
2 Nos. of each type
xxxix Terminal blocks 12 Nos. of each type
& rating
8.17 Spares For Battery And Battery
Charger
A Battery
i Complete dry cell 2% or 2 nos.
whichever is more
ii Intercell connectors with hardware 10% or 5 nos.
whichever is more
iii Vent plug 10% or 5 nos.
whichever is more
iv Acid level indicating float ( for
opaque containers only)
10% or 5 nos.
whichever is more
v Stand insulator 10% or 5 nos.
whichever is more
vi Cell insulator 10% or 5 nos.
whichever is more
vii Acid 10 Litres
B 220 V battery charger
i ELECTRONIC CARD (all
components mounted) Set of Cards
and modules (Each type and rating:
CPC Card, HV PFPSR card,
Rectifier FFD card, DC under/over
voltage relay card, ACOR card, DC
output fuse FFD card, Earth
leakage card, etc.)
1 set
ii Set of Auxiliary relays (Each type
and rating: Auxiliary relays, 6 amp/
110 V DC coil and 6 amp/240 V AC
coil)
1 set
iii Set of fuse links and glass
fuses(Each type and rating:AC
input fuse links, 315 Amp,Rectifier
fuse link, GS1000/400 Amp,Filter
condenser fuse link, 160 Amp,DC
output HRC fuse link, 500
Amp,Control HRC fuses links, 2 & 4
Amp & Glass fuse, 100 mA)
Min. 3 sets
iv Set of SCR and Diode (One of
each type and rating)
3 set
v Rectifier transformer 1 no. of each type &
rating

49
vi Control transformers 1 no. of each type &
rating
8.18 Spares For Service/ Passenger
Elevator
i Friction block 2 Nos.
ii Guide roller of each type 20% of total
population or 3 nos.
of each type
whichever is high
iii Contactors of each type 2No.
iv Control transformer 1 No. of each type
v Time device 2 No. of each type
vi Rectifiers 2 Nos. of each type
vii Over current relay 2 Nos. of each type
viii Auxiliary relays 3 Nos. of each type
ix Resistor 3 Nos. of each type
x Fuses of each rating 20% of the total
population
xi Limit switches of each type 3 Nos.
xii Push button 3 Nos. of each type
xiii Contact device(if applicable) 3 Nos. of each type
xiv Brake motor 2 Nos. of each type
xv Transmitters 2 Nos. of each type
xvi Switches of each type 3 No.
xvii Receiver 2 Nos. of each type
xviii Bearings of each type & size 2 Nos.
xix Roller of each type 3 Nos.
xx Worm gear spares
(a) ‘O’ rings 3 sets
(b) Sealing ring of each type 3 sets
xxi Spares for brake
(a) Fan 2 Nos. of each type
(b) Magnetic coil 3 Nos. of each type
(c) Brake disc 2 sets
(d) Brake pad 2 sets
xxii Bushing (for door front) 2 sets
xxiii Pinion 2 nos. of each type
8.19 Spares For DG Set(>1000KVA)
i Gaskets & packing 1 set
ii Valve springs 1 set
iii Fuel pump complete 1 set
iv Fuel nozzles and needles 1 set

50
v Piston, complete with rings and rod 1 set
vi Piston rings( for each engine) 1 set
vii Flow and temperature relay of each
type used
1 set
viii Main and end bearing shells for the
diesel engine
1 set
ix Generator bearing sheets 1 No.
x Rotor pole coil 1 No.
xi Battery charging rectifier diodes 4 Nos.
xii Complete rotating rectifier
assembly for alternator
1 set
xiii Fuses for the excitation diodes 3 sets
xiv Automatic voltage regulator 1 set
xv Solenoid coil for each solenoid
operated valve or relay used
2 each
xvi Instrument and indicator of each
type used
1 each
xvii Alarm and signal lamps of each
type used
10% of total
population
xviii Cabinet lighting lamps( if
applicable)
2 each
xix Bearing check kit 1 set
xx Shut down coil 1 No.
xxi Lub oil pressure relay 1 No.
xxii Filter screen 1 No.
xxiii ‘O’ ring injector 1 set
xxiv ‘O’ ring breather 1 set
xxv Magnetic pick up 1 No.
xxvi Actuator 1 set
xxvii Air cleaner 1 set
xxviii Belts( Fan belt) 1 set
xxix Hose bypass 1 No.
xxx Hose turbo oil supply 2 No.
xxxi Hose turbo oil drain 2 No.
xxxii Turbo repair kit 1 No.
xxxiii Over speed stop No.
xxxiv Resistor for diesel generator 48 No.
xxxv Element lube oil filter for Diesel
Engine
48 No.
xxxvi Element lube oil by-pass filter for
Diesel Engine
24 No.
xxxvii Element fuel filter for Diesel Engine 24 No.
xxxviii Plate corr. Resistor for Diesel
Engine
96 No.

51
xxxix Element air cleaner for Diesel
engine
4 Nos.
xl Diodes forward for alternator 3 No.
xli Diodes reverse for alternator 3 No.
xlii HRC fuses links of various rating 3 Nos. of each type
xliii Ammeter 96x96mm, (0-200 amp)
Accuracy class:1.0
1 No.
xliv A.C. Voltmeter 96x96 mm, (0-15
kV) Accuracy class:1.0
1 No.
xlv Ammeter selector switches 1 No.
xlvi Local/Remote selector switches 1 No.
xlvii Voltmeter selector switches 1 No.
xlviii Push button for trip circuit healthy
test
1 No.
xlix White indication lamps for spring
charged position
1 No.
l Alarm bell 1 No.
li Space heater along with control
switch
1 No.
lii Trip circuit supervision relay 1 No.
liii Lube oil pump assembly/rotating
assembly/impeller/shaft
1 set
liv Starting air motor 1 no.
lv Governing mechanism of DG set 1 no.
8.20 Spares For DG Set (Upto 1000
KVA)
i Coil assembly 24 Volts 2 set
ii Solenoid coil for fuel oil system 2 No.
iii Complete rotating rectifier
assembly for alternator
1 set
iv Voltage regulator complete 1 set
v Switches 1 No. of each type &
rating
vi Power contactors 2 No. of each type &
rating
vii Auxiliary contactors 1 No. of each type &
rating
viii DC starter assembly with clutch
engaging and disengaging
arrangements complete with motor
1 No.
ix Coil for contactor(for both power
and Auxiliary contactors)
2 No. of each type &
rating
x Timer 1 No. of each type &
rating
xi Auxiliary relays 1 No. of each type &
rating

52
xii Current transformers 1 No. of each type
xiii Voltage transformers 1 No. of each type
xiv Battery charging rectifier diodes 4 Nos.
xv Fuses 6 No. of each type &
rating
xvi Start/Stop push buttons 2 No. of each type &
rating
xvii Indication lamps 20%
xviii Indication lamp holders 10%
xix On/Off isolator 1 No.
8.21 Spares For PLCC Package
i Set of Cards/ Module (One of each
type) for PLCC
1 set.
ii Set of Cards/ Module (One of each
type) for Protection coupler
1 set.
iii Wave trap with Line matching Unit 1 no. of each type
and rating
8.22 Spares Unit Station Lighting &
Cables
A Lamps
i 100 W incandescent
2% or 2 nos.
whichever is more
ii 28 W fluorescent ‘T5’ type
iii 70 W HPSV tubular
iv 70 W HPSV elliptical
v 150 W HPSV tubular
vi 150 W HPSV elliptical
vii 250 W HPSV tubular
viii 250 W HPSV elliptical
ix 400 W HPSV tubular
x 400 W HPSV elliptical
xi 125 W HPMV
xii 1000 W halogen lamp
B Lighting fixture parts
i Fixture type-1B
(a) Front glass 5 Nos.
(b) Lamp holder 5 Nos.
ii Fixture type-1R
(a) Lamp holder 7 Nos.
iii Fixture type-1W
(a) Glass bowl 7 Nos.

53
iv Fixture type FB,FC,FD,FI & FR1
(with electronic ballast)
(a) Electronic ballast (2x28 W) for
T5 lamps
1% or 2 nos.
whichever is more
(b) Lamp holders 100 Nos.
(c) Acrylic cover (fixture type FC) 5 Nos.
(d) Louvre ( fixture type FD) 8 Nos.
(e) Louvre ( fixture type FR1) 4 Nos.
(f) Louvre ( fixture type FR2) 1 Nos.
(g) Acrylic cover (fixture type FH) 1 Nos.
v Fixture type SF1
(b) Ballast 1% or 2 nos.
whichever is more
(c) Lamp holder 4 Nos.
vi Fixture type SF2
whichever is more
vii Fixture type SF3
whichever is more
viii Fixture type SF4
whichever is more
ix Fixture type SH1
(a) Ballast 1% or 2 nos.
whichever is more
x Fixture type SH2
whichever is more
xi Fixture type SH3
whichever is more
xii Fixture type SS1

54
whichever is more
xiii Fixture type SS2
whichever is more
xiv Fixture type SW1
whichever is more
xv Fixture type SW2
whichever is more
xvi Fixture type MP
whichever is more
xvii Fixture type PF
(b) Lamp 1 Nos.
xviii Fixture type HL
(a) Transformer 1 Nos.
(b) Lamps 1 Nos.
C Lighting panels
i Synchronous timer 24 hrs. 3 Nos.
D Lighting control
switch/receptacles
i 20 Amp receptacles with plug 10 Nos.
ii 20 Amp rotary switches 10 Nos.
E Junction boxes
i Type-F/FE 2-terminal strips 50 Nos.
ii JB type –S 4 way terminal block set 3 Nos.
F Power & control cables
i Terminating kits with all
accessories and consumables
6 nos. of each type
and rating used

55
ii Jointing kits with all accessories
and consumables
6 nos. of each type
and rating used
iii Power cable of highest rating for
each voltage level
One drum length of
each type & rating.
iv Control cable 17 corex2.5 sq. mm One drum length
v Power cables lugs 12 nos.of each type
& rating
vi Control cable lugs 100 nos. of each
type
8.23 Spares For Offsite Area
A Coal handling plant
i Primary crusher motor and motor
bearings(if applicable)
1 set
ii Primary crusher lube oil motor and
motor bearings
1 set
iii Secondary crusher motor and
motor bearings
1 set
iv Secondary crusher lube oil motor
and motor bearings
1 set
v Conveyer motors and motor
bearings
One no. of each type
and rating
vi Stacker reclaimer travel motor and
motor bearings
1 set
vii Stacker recliamer slew drive motor
and motor bearings
1 set
viii Stacker reclaimer slew drive lube
oil motor and motor bearings
1 set
B Ash handling plant
i Ash evacuation motor and motor
bearings
and rating
ii Clinker grinder motor and motor
bearings
and rating
iii Stepper conveyer motor and motor
bearings
and rating
C Cooling tower
i Cooling tower motor and motor
bearings
and rating
D Pre-treatment plant
i PT plant motor and motor bearings One no. of each type
and rating
E Primary and secondary air
compressor room
i PAC motor and motor bearings One no. of each type
and rating
ii PAC motor lube oil motor and
motor bearings
and rating

56
iii SAC motor and motor bearings One no. of each type
and rating
iv SAC motor lube oil motor and
motor bearings
and rating
F Fire hydrant system
i Fire hydrant motor and motor
bearings
and rating
9 Spares For C&I Systems
A
Spares for Control
System/DDCMIS/PLC (covering
FSSS/Turbine/OLCS/CLCS
Including Gas Turbines)
i Processor Card / CPU/ DPU 10% or 1 No. min.
ii
Electronic modules of each type
and model for control system, Data
communication system, Master and
Slave Clock etc. (This shall include
all type of cards like I/O cards,
Remote I/O cards,
communication/Interface cards,
controller cards, CPU module or
Card, logic cards, Bus
coupler/Interface hardware / other
communication devices. etc.)
20% of each type
and model or
minimum 2 nos
which ever is more.
iii
Power Supply cards / Modules &
Power Packs for control system
10% of each type,
model and rating or
1 no. Min
iv
Prefab interconnecting cables with
connectors
1 no. of each type
and length
v System bus cable with connectors
1 no. of each type
and length
vi
I/O bus cable with connectors for
remote I/O units
1 no. of each type
and length
vii
Servers for different functions with
operating system and software
loaded complete with all
accessories
1 No. for each
function
viii
Fuses of different ratings for UPS,
DC power supplies and electronic
cards
1
B
C&I spares for main turbine, TD
BFP and HP Bypass
i
Electro-Hydraulic Converter coil
and position feed back transmitter
for main turbine
1 set
ii
Position feed back transmitter for
main turbine EHC / CV /IV
1 complete set
required for 1 unit.

57
iii
Turbine trip solenoid / complete
trip device
1 complete set
iv TSE Thermocouple 1 set
v
TSI sensor for axial shift,
expansions, speed and vibrations
1 complete set
vi
Electronic Cards/PCB's/interface
units etc. of all types used in Turbo
supervisory system
10% or 1 no of each
type whichever is
more
vii CJC box
1 no. for each type
thermocouple
viii
Electro-Hydraulic Converter coil
and position feed back transmitter
for TDBFP turbine
1 set
ix
Electro Hydraulic Converter
(TDBFP)
1 No.
x RTD for BFP thrust pad
1 Set required for a
BFP
xi Servo valve 1 No
xii Blocking Unit 1 No
xiii Oil line hoses
1 set required for 1
unit
xiv Feedback transmitter 1 No.
C
C&I spares for boiler, CLCS &
OLCS
i
Solenoid valve complete for DC
solenoids of FSSS
1 No. of each type
ii
Pneumatic regulating actuator
including control valves, blade pitch
and vanes
1 No of each type
iii Diaphragm for pneumatic actuator 2 Nos of each size
iv
Electric regulating actuator
including control valves, blade pitch
and vanes
1 No. of each size
and rating
v Pneumatic positioner 1 No. of each type
vi Scoop actuator motor with brake 1 No.
vii Scoop actuator gear box 1 No
viii Scoop feedback transmitter 1 No
ix
Controller module for scoop tube
actuator
1 No of each type
x
Transmitters used in protection
circuits of Boiler, Turbine and major
auxiliaries
1 No. each range
xi
Switches used in protection circuits
of Boiler, Turbine and major
auxiliaries
1 No. each range
D Control cables

58
i
Instrumentation cables of various
types including shielded, twisted
pair cables for analog & binary
signals, thermocouple extension
cables, heat resistant Teflon
insulated cables.
1 KM of each type
E AHP
i
Clinker grinder/slag crusher
assembly including its motor
1 set for units
having 100% SC
2 sets for units
having 50% SC
ii
Grinding Rolls of Clinker grinder/
slag crusher
100% SC
2 sets per unit
having 50% SC
iii
Bearings with plumber blocks of
Clinker grinder/ slag crusher
1 set per unit
having 100% SC
2 sets per unit
having 50% SC
iv
Gear Box for clinker grinder/ slag
crusher
100% SC
50% SC
v
Internals including gear set,
bearings of Gear Box for clinker
grinder/ slag crusher
100% SC
50% SC
vi Scrapper Conveyor chain
100% SC
50% SC
vii
Scrapper bars complete with fixing
lugs, guide pulley assembly with
shaft, bearings etc ,drive end
1 set for units
having 100% SC
viii sprockets, sprocket segments
2 sets for units
having 50% SC
ix
Bottom ash hopper cooling pipe
fittings , inspection/manhole
glasses and nozzles for all hoppers
of one unit
1 set
x
Fluid coupling for SSC/clinker
grinder
2 set of each type
xi Screw conveyor assembly 1 set
xii Flights for Screw Conveyor 2 sets
xiii
Bottom ash transfer pump
assembly with motor
2 sets
xiv Jet pump assembly 1 sets per unit
xv
Ash slurry disposal pump assembly
complete

59
xvi
Fluid coupling with scoop control for
Ash slurry disposal pump
1 set of each type
xvii
Gear box for Ash slurry disposal
pump
1 set of each type
xviii Internals of gear box 1 set of each type
xix V-belt 2 sets of each type
xx
Impellers, Liners (Volute & suction /
discharge)
xxi
Pump Bearings, sleeves, bearing
housing
2 sets of each type
xxii
Seal water pump assembly including
its motor
1 set for each type
xxiii
Ash water pump assembly including
its motor
1 set for each type
xxiv
Ash water pump bowl assembly &
bearing housing assy (for vertical
pumps) or rotating assy with bearings
(for horizontal pump)
1 set for each type
xxv
Vacuum pump assembly including its
motor
1 set per unit
xxvi Ash water line valves (above 100 NB) 2 nos of each type
xxvii Ash Slurry line valves
2 nos of each type
(knife valve) 1 nos of
each type (plug valve)
xxviii Ash feed valves below ESP hoppers 10% of total population
xxviii
ESP hoppers & buffer hoppers level
indicators (High &Low)
10% of total population
xxviii Fly ash isolation valves (Each type) 10% of total population
xxviii
Jetting nozzles (each type) for ash
handling applications such as flushing
box, sluice trench, wetting head, air
washer unit etc
xxviii
Fly ash conveying line couplings(each
type)
xxviii Bag filters (for buffer hoppers & Silos) 1 set of each type
xxviii
Ash slurry disposal pipe
10 % of total
population
xxviii Fly ash pneumatic valves (each type) 5 % of total population
xxviii Ash Slurry Pipelines
10 % of each type of
total population
xxviii Refractory 10 MT
Note : 1 set means items required for complete replacement in one equipment

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