Dr.

NARLA TATA RAO THERMAL POWER STATION

2X210 MW UNITS , STAGE-II

SYSTEM DIAGRAMS

ANDHRA PRADESH POWER GENERATION LIMITED

 Pg-1

BOILER AUXILIARIES
 FDF PAF UNIT OVERVIEW Pg-2

A A

RAH A Drum
MOP
HPT IPT LPT GEN Exe
A
IDF
C Eco
H
I
M
N LTRH
E
Y LTSH

HTSH
DEA

RAH B HTRH FWST CEPs

A B C

BFPs
ITSH
MAE A MAE B
A B C

LPH 3
HP
IDF
B HPH 5
LPH 2 GSC

B HPH 6
B
FDF PAF DC
LPH 1

MILL FRS
 DRUM DRAINS AND VENTS
Pg-5

B-19

B-18

L DRUM R

B-80

From ECO. B-89 To CBD Tank

inlet hdr drain RINGER HEADER

B-95 B-94 B-90

E-15 B-100 B-97

E-16 B-99 B-98 B-96 B-93

To IBD Tank

B-86
To IBD Tank

E-20
E-21
ECO OUTLET

ECO INLET

E-2
From feed regulating
station
 Pg-6

SH DRAINS & VENTS

S-109 S-25

S-108 S-26

S-16
MS(L)
S-15
H H L H
L I I H
N N T T
T T T T
G G S S
S S S S
R R H H
H H H H
I O O O
I I O I
N U U U
N N U N
L T T T
L L T L
E L L L
E E L E
T E E E
T T E T
T T T
T
H H H H
D H H H
D D H D
R D D D
R R D R
R R R
R

MS(R)
S-9 S-11

S-10 S-12
 Pg-7

HRH DRAINS & VENTS

SV SV

R2 R-15
CRH(L) HRH(L)
R1 R-14
L L H
T H R
T
R R R H
H H H
O
I O I U
N U N T
L T L L
E L E E
T E T
T
T
H H
D H H D
R D D R SV
R R

R-12 HRH(R)
CRH(R)
R-13
 SH ATTMPERATION
Pg-8

S - 47 S - 48 S - 76 S - 77

S - 57 S - 85 S - 86
S - 56

S - 60 S - 90 S - 89
S - 61

R
R

S S S S S S
H H To
H H H H
LTSH H H HPT
H H ITSH H HTSH H
SHH3 4 5 6 7 8 9
O/L

L
L

S - 59 S - 88 S - 87
S - 58

S - 54 S - 55 S - 84 S - 83

S - 46 S - 75 S - 74
S - 45

RH
Spray
S - 40 S - 69

HPH - 6 O/L
 RH ATTMPERATION
Pg-9

R - 28 R - 27

R - 37 R - 36

R - 41
R - 40

R
R

R R R R
H H H H To IPT
From H LTRH H H HTSH H
HPT 1 2 3 4
O/L

L
L

R - 39 R - 38

R - 35 R - 34

SH Spray SH Spray R - 26 R - 25
I II

R - 20

HPH - 6 O/L
 Pg-10

SOOT BLOWING STEAM HEADERS

SV
R
S-99 SB-4
SB - 98A SB - 98
ITSH
O/L 1
SB - 13 Drn.
L WWSBS 1 - 36
3
6

Drn.

SB - 31
LRSBS HRSBS
37-72 73-78
VENT

SB - 14
SB-15 SB-15A
SB-14A ASSM101
SB - 12 To RAH A From
Drn. RAH SB PRDS

SB-16 SB-16A
TO SCAPH
To RAH B

Drn.
 Pg-11
SOOT BLOWERS LOCATION

Economiser

57.9 75 77 76 74
73 78

55.4 67 69 71 72 70 68
LTRH

52.3 61 63 65 66 64 62
LTSH

49.1 55 57 59 60 58 56
HTSH
44.3 49 51 53 54 52 50
HTRH
41.1 43 45 47 48 46 44
ITSH

HP
37
37 39 41 42 40 38
1 2 3 32.5 4 5 6 7 8 9 10 11 12
29.3 21
13 14 15 16 17 18 19 20 22 23 24

26.8
25 26 27 28 29 30 31 32 33 34 35 36

Front Left Rear Right

 Pg-12

BOILER FIRING ELEVATIONS

FF

COAL F

EF C2 C3

COAL E

OIL DE C1 C4
W W
I COAL D I
N N
D D
B CD B
O O
X COAL X
(F) C (R)

OIL BC

COAL B

AB

COAL A

AA

C1 C4 C3 C2
 Pg-13

COMBUSTION CHAMBER CONNECTIONS

BT BT

WW(L)
CORNER 1 CORNER 2

SADC

WW(Rear)
W W

WW(F)
B B
Secondary
Air (F)
FURNACE (R)
Secondary
Air

CORNER 4 CORNER 3

WW(R) Co
al
Pip
e
Oi
r

lG
to

BT BT un
ni
Ig

Ignitor air
Scanner air
 Pg-14
HEAVY OIL / ATOMISING STEAM
HO-30
FT HO- 29 Control valve

From FOPH
Trip
Valve
HO 27
Short rec. Valve

Short rec. manual valve HO 40 HO -37

Long rec.valve
1 HORV
HO 26
2
3
To FOPH DE
4

1
BC 2
Oil
3
4

sv OS-35 Atomising steam line

GUN PRDS
HDR
Steam

ASSM 195
 AIR HEATER LUB. OIL SYSTEM Pg-15

FILTER 2
FILTER 1

BCW COOLER 2 COOLER 1 BCW

LOP 1 LOP 2
GUIDE BEARING

FI

RAH

SUPPORT BEARING

FI

LOP 1 LOP 2

COOLER 2 COOLER 1 BCW

BCW

FILTER 1
FILTER 2
P
R
D
ASSM 101 SB. HDR SCAPH-A SYSTEM Pg-16
S FG
PA SA
SB
H 29
D
3500C
R SB
17

IBD Heating
Elements

SB 15A
AH
SB

120A
RAH-A

118A/2

ASSM128

1500C
137

SAD-5
Atm SCAPH-A
ASSM139

IBD
IBD

135 134 FD Discharge

Header
P
R
D
ASSM 101 SB. HDR SCAPH-B SYSTEM Pg-17

S FG
PA SA
SB
H 29
D 3500C
SB
R
17
IBD Heating
Elements

SB 15A
AH
SB

RAH-B
122
120B

118B/2

124

1500C
126

SAD-6
Atm SCAPH-B
144

IBD
IBD

142 141 FD Discharge

Header
 Pg-18
FLUE GAS SYSTEM
GD 9 GD 5
ID FAN A
BOILER
GD 1
GD 13
ESP PASS A

GD 15 FG

GD 17 SA
GD 19 ESP PASS B
ECONOMISER
GD 3
Scoop / VFD GD 10 GD 6 PA
Inlet vane
C LTRH
RAH A
H
I LTSH
M
N
E GD 11 GD 7 HTSH
ID FAN B
Y
HTRH
GD 2
ESP PASS C
ITSH
FG
GD 16 HP
SA
GD 18 GD 14 ESP PASS D
GD 4 FURNACE
Scoop / VFD GD 20 PA
Inlet vane GD 12 GD 8

RAH B
 ID FAN LUBRICATING OIL SYSTEM (Unit 3) Pg-19

B
Hs B B
MOTOR HS FAN

Rtn. oil

Scoop oil Cooler 1

Scoop oil Cooler 2

LUB OIL
Cooler 2
Cooler 1
Lub Oil Tank

FILTER 1

FILTER 2
Rec. v
Drain
LOP 1 LOP 2

O/L
I/
L
BCW
 Pg-20

ID FAN LUBRICATING OIL SYSTEM

FAN

MOTOR B B

Rtn.oil

LUB.OIL
1 FILTERS 2
1 CLR’S 2
REC.V

LOPS 2 PI TI
1
FG

PI TI O/L
D
I/L
 Pg-21

SECONDARY AIR SYSTEM

RAH - A

FG SCAPH A
WB
(F)
SA FD FAN A

PA SAD 1
SAD 7 SAD 5 SAD 3 Blade pitch

DC From Atm.
Scanner air fans
AC

Filter
A
From Atmosphere
Ignitor Fans
IGNITORS
B
SAD 8 SAD 6 SAD 4 Blade pitch
FG SAD 2

SA FD FAN B
WB
(R) SCAPH B
PA

RAH - B
 F.D. FAN LUBRICATING OIL SYSTEM Pg-22

B MOTOR B B FAN B BP

Rtn. Lub. oil

Rtn. Control oil
Rtn. Leak oil
T

LUB OIL
T
FILTER 1

FILTER 2 Pr. Reducing

PRV G switch
LUB.OIL TANK
BCW I/L

Rec. Valve

coolers1

coolers2
Drain
LOP1 LOP2

Pr reservoir BCW O/L

 PRIMARY AIR SYSTEM Pg-23

FG

SA
PAD 15
PA Gen gate Hot air
damper
PA
TO MILL - AB PAD 7 PAD 5 PAD3
RAH - A

COLD AIR HEADER

Circ. Air Cold air PAD 12 PAD 1
damper PA FAN - A

HOT AIR HEADER

To Purge
PAD 16
Hot air
damper
`
TO MILL - CD
PA Gen gate
PAD 13
Cold air
damper

FG
To Purge

SA
PA Gen gate PAD 17 `
Hot air
damper
TO MILL - PA
EF PAD - 8 PAD - 6 PAD - 4
RAH - B

Cold air PAD 14

Circ. Air PAD 2
damper PA FAN- B

To Purge
 Pg-24

PA FAN LUBRICATING OIL SYSTEM

MOTOR B FAN B

Rtn. oil

LUB OIL
Cooler 1
Lub oil tank

Cooler 2

FILTER 2
FILTER 1
Drain Rec. V

O/L
I/L
BCW
 MILL SPEED REDUCER OIL SYSTEM Pg-26

Girth Gear Seal Air Fan

MILL Girth Gear

PI
Air Filter
Instrument air
line
Lubricator

Greasing
block

Filter

I/L
BCW

PI
Limit switch
O/L
Grease
Pump M
MOTOR
Hydraulic
Coupling

Grease
MSR Barrel

Filter1 Flow
indicator
EM Reducer Pump
Aux. ASR
Motor Brake
Dummy
Filter 2

I/L MSR: Main Speed reducer

BCW
Cooler
ASR: Auxiliary Speed reducer
O/L
 MILL AIR/COAL FLOW SYSTEM Pg-27

Bunker Bunker
Purge dampers
Purge dampers
PC O/L gates PC O/L gates
Bunker Purge Bunker
Isolation Shut off Isolation
Gate damper Gate
Clean out FEEDER FEEDER Clean out
conveyor conveyor
RC gate RC gate

Charging
Classifier Classifier

gate
Mix Box

Ball
Mix Box
Rejects
B/p chute
damper B/p
damper
Screw conveyor
Purge air

MILL

Screw conveyor

PA Damper PA Damper
Cold air

PAG gate
B
Hot air SAF
Seal air header A
 Pg-28
MILL FIRE PROTECTION
FEEDER
H-7 H-12 FEEDER

RC GATE

MIXING H-8 H-11 MIXING

BOX BOX

Classifier Classifier

H1 H4

H9 H10

H5
MILL
QUICK

SLOW
H2
H3
H6

drn

PRDS HDR FIRE

HYDRANT
HDR
 Pg-29

Vent Mixer CHEMICAL DOZING-1

Drum
Vent Agitator - 1

Mixing Tank

Phasphate
tank - 1

O/F drn
Drn. To
Phasphate Drum
Phasphate
Dozing
Dozing
Pump
Agitator - 2 Pump

CEP Discharge Vent

CEP Discharge

Phasphate
tank - 2

Drain

O/F drn
 Pg-30

CHEMICAL DOZING - 2

Condensate Water
DEA

FWST

Hydrazine Tank 1
Hydrazine Tank 2 To
BFPS

Drn. Drn.

Hydrazine
Dozing Pump.
 Pg-31

CBD CONNECTIONS

BD 100 BDM 78

DEA CBD BYPASS TO IBD

FWST
SV
DRUM

BDM 94
Drain

B-80

CBD
BD 93

BDP 92

To IBD
Drain

BDM 90
 LC
HC
R-13
R-12

Stdby HC
S-12
S-11

Vents & Drains

CBD bypass
BDM 94
CBD DRAIN

Atm.
S-9

S-10

Atm.

From SCAPH A
IBD to Atm.
IBD Tank Connnections

From soot blowing Hdr

PRDS Drains & Vents drain lines

From seat drain From SCAPH A

From UDT
Drain to Atm

Emergency drain

HPBP Flow Tr.line drain

B90
B 89

M S to PRDS line darin

Ring Hdr Drain
B 86
Pg-32
 Pg-33

TURBINE AUXILIARIES
 WARMUP LINE
M S /CRH / HRH /WARMUP CONNECTIONS
To PRDS Pg-34
HPBP 1
CRH 78

LPBP Spray from CEP

NRV
CRH(L)

MSSM 30B

M S (L)
S

discharge
HRH(L) MSSM 30

S IP SV / CV 1
HP SV / CV 1

HPT IPT LPT

IP SV / CV 2
HRH(R) HP SV / CV 2

MSSM 36
S
CONDENSER
M S (R)
S
MSSM 36B
CRH (R)
CRH 79
NRV

HPBP 2 LPBP 2

HRHM 55B HRHM 109

WARMUP LINE
FB 2

LPBP 1

WARMUP LINE HRHM 55A HRHM 108

FB 2
 MS / CRH /HRH / END DRAINS (UNIT-III) Pg-35

CRH (L) CRH 78 NRV

CRHM 67A CRHM 22A
TG hall (Atm.)
Out side TG hall(Atm.) FB-2

MS (L)
M S Drain Pot S MSSM 85
HP-1 IBD
MSSM 142A
MSSM 83A
TG hall (Atm.)
IBD IV-1

HRH(L) HRHM 56A S HRHM34

FB-2 FB-2
FB-2

HRHM 41A
HRHM 46

HRHM 32
HPT IPT LPT
TG hall (Atm.)
IV-2
Out side TG hall(Atm.) Atm
HRH(R)
S HRHM 38
HRHM 41B

FB-2 FB-2 FB-2

HRHM 56B
HRHM 51
TG hall (Atm.) HRHM 36
Out side TG hall(Atm.) HP-2

MS(R) M S Drain Pot S MSSM 96

IBD
MSSM 142B MSSM 94A
TG hall (Atm.) NRV
IBD CRH 79
CRH(R) CRHM 86A
CRHM 67B CRHM 22B
FB-2
TG hall (Atm.)
FB-2
Out side TG hall(Atm.)
 MS / CRH /HRH / END DRAINS (UNIT-IV)
CRH (L) CRH 78 NRV Pg-36
CRHM 67A CRHM 22A
Atm. FB-2

MS (L)
M S Drain Pot S MSSM 85
HP-1 IBD
MSSM 142A
MSSM 83A
Atm
IBD IV-1

HRH(L) HRHM 56A HRHM 41A S HRHM 32

Atm IBD FB-2
FB-2
HRHM 46

HRHM34
HPT IPT LPT
FB-2
IV-2

HRH(R)
HRHM 56B HRHM 41B S HRHM 36
IBD FB-2
FB-2 Atm HRHM 51
HRHM 38
HP-2
MS(R) FB-2
M S Drain Pot S MSSM 96
IBD
MSSM 142B MSSM 94A
Atm
IBD NRV
CRH(R) CRHM 86A
CRHM 67B CRHM 22B
FB-2
Atm
FB-2
 HPBP 1
HP / LP BYPASS Pg-37

MSSM 130C MSSM 142C

IBD CRH 78
FB 2 Atm
CRH(L) NRV

IBD
HP 1
MS(L) S
DRAIN POT
S IV-1

HPT IPT LPT

HRH(R) IV-2
HP 2 S CONDENSER

MS(R)
S NRV
IBD CRM 79

CRH(R) Atm
LP.Bypass Spray
HRHM 121B
HPBP 2
LPBP-2

HRHM 90B
HRHM 55B
MSSM 130D HRHM 109
HRHM 40B FB-2
FB-2
WARMUP LINE From CEP disch.
MSSM142D FB-2 FB-2 CEP vent solenoid
HRHM 121A
LPBP-1 Cond

Atm HRHM 55A

HRHM 108
HRHM 89B HRHM 19B FB-2
WARMUP LINE
FB-2 FB-2
 GLAND STEAM SYSTEM To atmosphere

SSCE

1 FAN 1
4 1 1 1 1 1

2 3 3 2 2 2 2 2 FAN 2

GSC

To Flash Box-3

Leak Steam CV MAL 81

Bypass valve Seal Steam CV
HPCV 1

HPCV 2
ESV 2
ESV 1

IV 1 IV 2 Bypass valve To Flash Tank

AS-102
To flash box-2
To Condenser
Seal Steam CV To flash box-2
Leak Steam CV

To atmosphere
AS-22
AS-20
To FT 2
From PRDS

From CRH Line Pg-38

 Pg-39
TURBINE FIXED POINT

EXPANSION OF HPT SHAFT EXPANSION OF IPT SHAFT EXPANSION OF LPT SHAFT

DIF.EXPANSION

-ve +ve
Rotor expansion more than casing +ve
Rotor expansion less than casing -ve

1 2 TH.BRG 3 4

HPT IPT LPT

SLIDING SLIDING
FIXED FIXED

IPT Overall Expansion FIXED

HPT Overall Expansion

EXPANTION OF HPT CASING EXPANTION OF IPT CASING EXPANTION OF LPT CASING

Pg-39
 JOP Header TURBINE OIL SYSTEM

Throttle valve
MOP
HPT IPT LPT GEN
EXC

THRUST
BEARING Gate Valve
FILTER Gearing

Drain Oil header

Lub.Oil to bearings Rtn.oil tank

3 way valve

ESV
OVEF-1

Control Oil

cooler
A B
OVEF-2

MOT O/L

BCW
DC JOP
AOP-1 AOP-2 DC EOP JOP-1
I/L
Centrifuge

Pg-40
 FP-2 FP-1
TURBINE CONTROL OIL SYSTEM
(Gate valve-2 MOT Room) SOLENOID VAVLVE
(Gate valve-1 10 mts)

F
F

CONDENSER
Atm
D
MOP / AOP discharge Hdr

Control Oil Hdr SD

VACUUM BREAKER

ESV (MOT ROOM)

To and From
Seal water

To LPBP SVs

LPBP CVs
HP / IP Governing LPBP
CVs Rack Rack

CV
P SV
Pilot
c Pilot
Valve
Valve Signal oil
Signal oil

Return Oil Header

Pg-41
Pg-42
 LP Bypass
FILTER

Vaccume Signal

Spray Water signal

Elec. Signal
CRH steam signal

Elec. Signal
Elec. Signal
CO CO
SOLENOID VALVE

Water Injection SO Cond. Wall

Water Injection Valves 1 & 3 EHC Spray temp
Vac. Cond.
Valves 2 & 4 Water Protection
EHC Protection
Bypass Limiting switch
Controller Sig.O
PILOT PILOT
VALVE VALVE

Chimney
Drain line
SO to LPBP

FILTER

Control oil Header

SO: Signal Oil

CO: Control Oil
Pg-42
Pg-44
 AIR EVACUATION SYSTEM
CONDENSER

SM-14 SM-15
A B

VR-9

Air evacuation Line

SM-16 SM-17 Atm

ASSM-148
ASSP-157

PRDS HDR
AS-5
S
SM-19
AS-27
AS-3
AS-2
PE
Air isolation valve
Atm
bypass valve

Air ejector .
Air ejector

SW
SM-18
valve

M A E M A E Atm
B AS-4
A DR-37 DR-38
Vaccum pump M

SE

COOLER
Atm Atm
Atm F B-3
BCW Water Atm

Pg-45
 AS-5
CEP relief valve vents
CONDENSER CONNECTIONS

VR-3
Steam from PRDS Pg-46
LP Heater vents 1 2 3
VR-8

VR-1
SM-11
SM-13
Atm

VR-2
Priming ejector

SM-12
Vaccum Breaker
Atm
VR-7
VR-6
SM-20

DM make up
LPBP

VP
VR-4 VR-5

A B
DM 49A/B

SM-15
SM-14
DMP57A

FB-1
FB-2
FT-1

DMP57B
From CEP disc.
LPBP Spray water

FB-3
TO MAE s
FT-2

CD-19
CEP Rec.

Seal water hdr

CD-21

In unit-4 this valve is not

there
CS-109/110
DRN CEP Suction
Pg-46
 CONDENSATE SYSTEM - 01
To MAE’s

LP Exhaust Wood Spray

CD-42 CD-43 CD-46
CD-41 CD-44 Seal water
CD-8

Alkaline flushing

Wet Steam Washing

CD-45

Dosing N H
HPBP Stem Cooling

Che.Dosing
CD-9
Condenser TBN.FB.Spray
Polishing

TSP
2 2
Unit
LPBP.Spray CONDENSER

TFT Spray CEP Vent

CD-7
CEP Disch. Hdr
FB-3

CD-36

CD-6
CD-2

CD-4
HOT WELL

SW
CEP A CEP B CEP C

SW
SW

VR-3

VR-1
VR-2
NRV CD-3 CD-5
CD-1
BCW BCW BCW

NOTE:-
IN UNIT-4 CD-9 (BYPASS S S S
OF CPU) IS NOT RV RV RV
CS-4 CS-5 CS-6
AVAILABLE SW SW SW
CS-1 CS-2 CS-3

CEP Suction Hdr

Pg-47
 CONDENSATE SYSTEM -02
CD-35
DEA CD-34

CD-30
CD-33
CD-27

FWST

CD-32 CD-31 CD-29 CD-28 CD-26

CD-25
LPH 3 LPH 2 LPH 1 DC

CD-17 NRV

Deaerator level
control station
To UDT CD-15 CD-70
Excess Return CD-72 CD-24 CD-14 CD-16
CD-60 CD-23 CD-13 CD-69
CD-71 CD-22

CD-12

Recirculation
CD-18 CD-73
CD-11 CD-19 CD-21
M A E CD-20
M A E CD-74
B GSC
A

CD-52 CD-50 CD-51 CD-49 CD-10

From CEPs

CD-53
Pg-48
 LPHs,GSC,DC DRAINS & VENTS
CONDENSER
SM-11

SM-12
Air vent Air vent Air vent
SV SV SM-13
SV HOT
WELL

FB-1
LPH-3 LPH-2 LPH-1
DR-26

DR-22
DR-17

DR-21
DR-16

DR-18

DR-23
SW
DC
DR-35 DR-36
DR-25
Atm DR-24

DR-19
DR-20
Seal Steam

Seal Steam GSC DR-31 FB-3

SW
Exhaust Fans

S
DR-27 DR-30
Pg-49
To Economiser
FEED WATER SYSTEM

BFP Rec.valve
E-2 E-15 DEA
E-16

FC-10
FWST

BFDM 121
BFDM 106

BFDM 111

FC-6

FC-2
BFDP 116
BFDP 105

BFDP 110
FS 3 FS 2 FS 1

S RV S RV S RV
C B

BFDM 115
BFDM 104 BFP s A

BFDM 109
RH Spray
R-20
BFDM BFDM BFDM
S-69
II 17F 17C 17B 17A
17E 17D
SH Spray S-40

I Flow Orifice
BFDM 175
FD-11

FD-12 HPBP Spray

HPH-6

FD-10

FD-13 HC

FD-8 AUX.PRDS Spray

LC
HPH-5 FD-9

FD-7

Pg-50
 DEAERATOR CONECTIONS
A FC-4
FC-3 5 HPH 6
BFP CBD to Atm
B FC-7 FC-8 CD-35 CD-34 From LPH-3
Rec.v
C

BD 100
FC-11 FC-12

HPH Vents

Vacuum Breaker
CBD
DR-12 DR-13
BDM 78

SM-9

SM-4
HPH-5
DR-10 DR-11

Vent
CBD
DR-5 DR-32
Tank
HPH-6 1 SV 2
DR-4 DR-6 DR-7
From Boiler fill pump header
DEA SV
1 2
DM-41 DM-42 AS-12

EX-14
FWST AS-8
AS-9
AS-7
AS-6 AS-10
AS-19
Che.dosing
AS-18

Pegging Steam
BFP s
DM-117

DMP 115
Atm To UDT CRH
Ext-4
DM-122
Heating Steam

AS-17

PRDS Header
Pg-51
 BFP-A

BFP Discharge Header BFP-C

TO HPH 5 BFP-B

FST

FST
Flow Orifice
RCV
VENT STRAINER

SCOOP
BP
MOTOR
BFP A

D D
DRAIN

Pg-52
 BFP LUB OIL SYSTEM SEAL
WATER
BCW I/L Hdr COOLER
BCW O/L Hdr

AOP
M

BP MOTOR HYDRAULIC BFP

SCOOP

BCW WATER
F LUB.OIL
I
L A B
T SCOOP OIL
E
R DRAIN OIL

O/L W.O.COOLER L.O.COOLER

B
A A
C
W

I/L B B

Pg-53
 HP,LP EXTRACTIONS TO HEATERS
CRH 78

HPT LPT GEN

IPT

CRH 79
CRH
EX-7
EX-8
FB 1
AS 6 EX-5
EX-6
AS 7 AS 14 EX-4 EX-2

AS 10 AS 9
PRDS EX-3 EX 1
AS 8

EX-14
AS 13 AS 12 AS 11

AS 16
AS 15

DEA

EX-10
EX-11

EX-9
EX-12

DR-6 DR 7 FWST

LPH-3 LPH-2 LPH-1

HPH-6

DR-22
DR-17
DR-18
DR 13

DR-21
DR 32
DR 34 DR-12 DR-16 DR-23
EX-13
DR 3

DR-8
DR-2
DR 1

EX-101
DC

DR-24
DR-9

EX-102
DR-19 DR-35 DR-36
HPH-5 DR-20 DR-26
EX-112

DR-25
EX-110
EX-103

DR 14
FB-3
DR-15
FB-2 FB-1

Pg-54
 DR-32 HP HEATERS DRAIN SYSTEM
SM-9
DR-12 DR-13
DEA SM-4
D

DR-6 D DR-7
FWST

SM-3 Start up vent

RV SM-1 SV
D D

DR-11 DR-5 O/L

DR-10 DR-4 FW HPH-6

I/L
DR-2
DR-3 DR-1
Shell
Drain
SM-8 DR-34

RV SM-6 SV

O/L

I/L
FW HPH-5

Shell
DR-14 DR-15
Drain
FB-2
DR-8 DR-9
D D

D
Pg-55
 AUX.PRDS SYSTEM
ASSM 297 ASSP 298 ASSM 299
HC ( L)

ASSM 309A
ASS 300 ASSP ASSM M S Line
301 302 LC

ASSM IBD
309B ASSM 303
ASSM 304 ASSM
(R)
305
BFDP 170 BFDM 172
HC
DESUPERHEATER

169

166 168
167

BFP Hdr discharge

Unit-5 ICV 202 209 203 LC

204 205 206

Steam to turbine glands

SV 1 ASS 290

IN UNIT-3

To FW storage tank
Mill fire quenching

To fuel heating
ASSM 230
SV 2 ASS 289

AS 20
AS 23
CRH LINE ASS 201
AS 18

AS 21

ASSM 182

ASSM 192
DRAIN POT
SV 3 ASS 291

AS 17
156

AS 22
ASSM 184
TO ATM
ASSM 154
ASS-201

To Alkali boilout
ASSM 148

ASSM 231

ASSM 279
ASSM 200

ASSM 101
ASSM 154

ASSM 183
ASSM 281
TO FB 2
FB-2
Atm
To Ejectors ASSM 157 Drain
Unit 3 ICV Drain
Drain to Atm SCAPH

Pg-56
 To D/A
FLASH BOX-1 DRAIN MANIFOLD
Ex-5
Ex-14 To LPH-3 To LPH-1
Ex-11
Ejector Steam To LPH-2
Header Ex-6 Ex-10
Ex-4 Ex-9

Ex-2 Ex-1
Ex-3
AS-106 EX-104

EX-106
AS-103
AS-105 EX-108

EX-101

EX-103
EX-102
AS-107 EX-107 CONDENSER

DR-20
DR-19 FLASH
BOX
1
D
SW DR-24 DR-25

D
D SW
HOT WELL

LPH-3 LPH-2
LPH-2 LPH-1

Pg-57
 DEA
CRH NRV FLASH BOX-2 DRAIN MANIFOLD
L CRH-78 Ex-12
AS 6

HPH 6

R
CRH-79 Ex-13
HPH 5

HRH L/R CRH L/R

(HRHM) (CRHM)
Seal Steam

LPBP seat Drain

PRDS

CRH to Deaerator pegging stm hdr drain

Atm

22A
22B
19D
56B

19B
56A

38

46

51
AS 108

34
CRHM-86A

AS 110

G S Hdr drain
AS 112

AS-102
Ex-112
Ex-110
IN UNIT-3 AS 111

CRH Drain
Wet Steam Washing Line from HPT Exn.

109
108
DR-15

90B
AS 112

DR-14

89B
130 D
130C
FLASH BOX 2 CONDENSER
To FB-2 DR 107
16 ATA St. Drain Atm

55A

55B
Atm
HPH-5
DR-8 DR-9

Atm
HPBP LPBP Drains
HPH-6 HOT WELL Drains (HRHM)
(MSSM)
Down stream

Pg-58
 FLASH BOX-3 DRAIN MANIFOLD
CEPs
C

HPBP Stem Cooling drain

A

From Seal Water Header

Drain Cooler

CD-125
CD-103
CD-101
CD-41
DR-26 CONDENSER

SW
FLASH BOX 3
Gland Steam Condenser
SW STEAM TRAP

DR-130 / 131 HOT WELL

DR-134 / 135
DR-31

DR-37 DR-38

MAE-A MAE-B

Pg-59
HPCV 1
T F T-1 MAL DRAINS
HPT

HPCV-2
HPT

HPT CASING

IPCV 1
IPT

IPT
IPCV 2

MAL-15

MAL 16

MAL 22

MAL 31

MAL 32
M CONDENSER

1
M M M M

TURBINE
FLASH
TANK-I
LPBP Spary
HDR

Vent

MAL-26
MAL 11
HOT WELL
LPBP Signal Line

M
M
To TFB-2

Equalising Line
CEP Disc Hdr

LPBP Spary

HPCV 1

IPCV 1

Pg-60
 Ext 5
T F T-2 MAL DRAINS
Leak stm cv Seal stm cv
Ext 4
Ext 3

Ext 2

MAL-81
MAL-54

MAL-55
MAL 47

MAL-51
CONDENSER

1
TURBINE
To TFB 1 FLASH
TANK-II

MAL-27

MAL-66
MAL-12

MAL-65
To LPBP HOT WELL

LPBP Hdr
CEP Discharge

CRH NRV (L) CRH NRV (R)

CRH-78 CRH-79
HPCV 2
IPCV 2

Pg-61
 UNIT DRAIN TANK DEA-4

Alternative drain from WW drain header

FWST

DM 116 DM 114

DM 115

DM 122

CD-23
Trench CD-24 CD-22 UNIT-4

CD-60
CD-23
Excess condensate Return CD-24 CD-22

UNIT-3

CD-60

DEA-3

UNIT DRAIN TANK FWST

DM 116 DM 114
Drain
Lift
DM-115
Pumps
DM 122
Over Flow
Drain To DM Tanks

Pg-62
 Pg-63

GENERATOR AUXILIARIES
 GENERATOR SEAL OIL SYSTEM Pg-64

Seal Oil

RR Oil

Diff. Pressure Valves

CV’s for volumetric
Seal Ring

flow rate control

Turbine
End Exciter
Main Seal GENERATOR
End
To Waste Gas System Oil Tank
Generator
pre-chamber

1 Filter 2

Air

H2 side Oil
side

Seal Oil
Tank Intermediate
Seal Oil I/L
Tank O/L
BCW
Vacuum
Pump

1 2
SOP-1

DC SOP
Seal Oil Coolers
 Atm GENERATOR GAS SYSTEM Pg-65

Atm

Seal Oil GENERATOR

Storage Tank

Mechanical
Analyser Purity Meter

Instrument Air

BCE Fans
A
1

Vacuum Pump
Filter 2

1 Drains

2
Atm
Regulator

Silica-gel
1

Tank
Pressure Reducer

Exchanger
2

Heat
H2
RV

CO2 Flash Evaluator Air Filter

Blower

RV CO2
 Pg-66
GENERATOR COOLING WATER SYSTEM

GENERATOR
EXCITOR

I/L O/L

COOLER BCW
 BRUSHLESS EXCITOR Pg-67
3 Ph, 370 V MAIN
EXCITOR

ROTATING RECTIFIERS
3 Ph AC 150 Hz , 226 V RADIAL FAN
PILOT EXCITOR A B GENERATOR ROTOR
SLIP RINGS

0 A to 2600 A D C

R Y B

MAIN EXCITOR
FB FIELD CURRENT
THYRISTOR SET 0 A to 36 A

VSET

GATE v VACT.
AVR
CONTROL
SET
PULSE BLOCKING

Limiting Signal
 EXCITATION SYSTEM CIRCUIT Pg-68

RY B

Power System
Set Point

Stabilizer
Generator
M M
Voltage

Excitation
Follow-up

Set Point

Current
Control
V / Hz
Limiter
PT

Excitation

Regulator
Generator

Regulator

Current

Excitation

Regulator
Actual

Voltage

Current
Generator
Voltage

CT Actual Value

Actual Value
Reactive

Excitation
Current
Active

Gate Control
Under Excitation
Excitation Build-up

Set
Limiter Field Forcing
GEN

Gate Control
Limitation
Over
Excitation

Set
Limiter
Main Exciter Rotating Rectifier

Auto/Manual
Changeover
Generator
Protection

Control
Room

Blocking
to pulses
Control
Room

Quadrature
Coil Field Changeover
Suppression Auto-Manual

AUTO MANUAL

Aux. Exciter Thyristor

Field Breaker
sets
 Pg-69

ELECTRICAL SYSTEMS
 220KV SWITCH YARD
Pg-70

BUS-1

BUS-2

CB

25MVA
220/132KV
Auto
Transformer
By Pass Bus-1

CVT

132KV Bus LA

GT-1
TALAPALLI-3

TALAPALLI-4

TALAPALLI-1

TADIKONDA-1

TADIKONDA-2
TALAPALLI-2

GUNADAL
PODILI-2

PODILI-1

NUNNA-2
CB

ST-1

ST-2
UAT-1B
UAT-1A
KondapalliBhavanipuram

Generator-1
 BUS-2
BUS-1

By Pass Bus-1
NUNNA-1
UAT-2A
\

Generator-2
GT-2
PT

UAT-2B
BUS
COUPLER

PT

BY PASS BREAKER-1

BHIMADOLE
GT-3

KAMAVARAPU
KOTA

UAT-3A

GT-3
Generator-3
GT-3
220KV SWITCH YARD

UAT-3B ST-3

UAT-4A BY PASS BREAKER-1

GT-3
Generator-3
GT-4

UAT-4B
ST-5

NARKETPALLI
Pg-71

BY PASS BUS-2
 220KV SWITCH YARD Pg-72

BUS-1 400KV BUS

BAR
Stage-IV
BUS-2

LINE-2

LINE-1
LINE-4

LINE-3
ST-7
80MVA
400/11/11KV
OBA OBB

By Pass Bus-2

GT-5 GT-6
50MVA 315MVA
220/110KV
KONDAPALLI-

KONDAPALLI-
CHILLAKALL

220/400KV
ST-6 Auto Tr
U

OBX
UAT-6A

UAT-6B
UAT-5A

UAT-5B

(Stage-IV

Generator-5 Generator-6
 220KV FF MCC HT/LT SWITCH GEAR 220KV

CW MCC

GT-4

GT-3
220KV Pg-73

CWT-IIA
220KV

AH MCC ST-5

CWT-IIB
CW-C ST-3

UAT-4A

UAT-3A
UAT-4B

UAT-3B
MB
PB
CW-D Generator-3
Generator

MB
PB
SC 3BT 3AT

MB
4BT 4AT

PB
UST-4AT

UST-3BB

UST-3AT
UST-4BT

UST-3BT
EPT-3B
LDT-3
SST-3
Turbine
Board Turbine board
Misc MCC
ESP MCC TB

EMC

SSS
TVC BB
TVC
ESP-Mcc LDS MCC
`
Boiler Board BVC

SB-MCC
SB MCC
UST-4AB

BVC
UST-4BB

UST-3AB
EPT-4B

EPT-3A
EPT-4A

SST-4

LDT

MI
PI
SD
4BB 4AB 3BB 3AB

MB

PB
AH-D
SA/SB
(Not in Use)
AH-C CH-A
CLW-B Stage-I
AH-A
AH-MCC CLW-A

CL-MCC
 220V DC DISTRIBUTION BOARD Pg-74

Main Float Stand-by Main Boost Stand-by

Battery Panel
Charger Float Charger Charger Boost Charger
MDB(L) MDB(L)
BATTERIES U-4 U-4

‘CC’ MODE

‘CV’ MODE

‘CV’ MODE

LEFT MIDDLE A MIDDLE B RIGHT

Unit-4

Ash PH DCDB

CWP DCDB
DC Scanner

sec-2
CWP DCDB

DC EOP
DC JOP

DC EOP
DC JOP
Excitation
DC SOP

DC SOP
Emergency

Air fan
FSSS

System
Lighting
sec-2

Section-B Section-C

Section-A Section-D

To Various Switch Gear To Various Switch Gear

 ST-1 ST-3 6.6KV STATION BUSSES Pg-75

SA SC SE

SB SD SF

ST-5
ST-2 ST-4
 Pg-91

STATION AUXILIARIES
 Wagon
Tippler-
Wagon
Tippler-
COAL PLANT
Pg-92
III IV
Hopper

Con 1D
TP1A Bottom Open Boggy rapid discharge(BOBR)
Con 1C
Wagon Tippler- 1 2 3 4 5 6
Con 1B
I TP1
Wagon Tippler-
II Con 1A
Paddle Feeders
Con 6A
TP2
Con 6B Track Hopper
Con 2A1 Con 2B1
Stacker/ Reclaimer -1 12A WT5

Uncrushed
coal heap
Con 7 JT1

Con 8
Crushed coal heap TP3 JT3
JT3B 12B WT6
Con 2A2 A
Con 2B2 13A 13B
TP7 TP6 Crusher House 2
Crushed coal heap 14A
CH2
Con 4A1

Con 4B1

Hopper JT3 JT2

14B

Crusher House
Stacker/ Reclaimer -2 VS1 2 3
EM Hopper
4
RH9 15A 15B
TP8 TP5
Cr- Cr- Crushed coal heap
Crushed coal heap Cr-3 Cr-4
1 2 23
Con 9A
Con 9B

JT6
JT4 JT3
BF-1 BF-2 BF-3 BF-4 A
Crushed coal heap
Con 3A2 Con 3A1
TP4 24 16A 16B
TP9
Con 3B2 Con 3B1
4A2 4D2 17A
MCC II
4C2 4B2 JT7 JT6B JT5
18A 18B 17B
Con 5A Jn Tower 5D MCC I MCC IV
Con 5B 19A Stage IV
5C JT8
19B Bunkers
Stage I & II Bunkers Stage III Bunkers
 Pg-93

Single line Diagram of DM Plant

Clarification Process Filtration Process
Degassification process
+ve Ion Gases
removal Vent
1 Degas
A
tower
Alum C
2 F
DM Plant Clear P CATION
Clarifier WaterSump S RESIN Degasser
Chlorine
3 F water
storage tank
Clarified
water Pumps
Air Blowers Degassser
1 2 water Pumps
Inlet Flash Mixer
-ve Ion
Chamber (Alum)
removal

Cation
Resin
DM Water Mixed ANION
Storage tanks Bed RESIN
Raw Water ANION
from 60HP RESIN
Pump
>=600 cm

PSF: Pressure Sand Filter <1 cm

ACF: Activated Carbon Filter
 DM WATER SYSTEM Pg-94
U-1 ELP

U-2 ELP
WTP

DM DM DM DM DM
Tank Tank Tank Tank
DM DM Rec. DM
Tank 1 Tank Tank Tank
(1000T) 2 3 4 5 6 7 8

Stage-I
Rec. Valve
DM Pumps

Stage-III &IV
Pumps

Make Up Pumps
Boiler fill
2
Recirculation Pump
8 7 6 5

DM-59

Unit-1 Interconnec
tion Stage-I
Interconnecti
Unit-2 on Stage-III

Stage-III TO DM Tanks
3
Eco. Filling line

2 4 5
Eco. Filling line

Unit - 3
Unit - 4

Unit 4
Unit 3
Dea Dea
 RIVER WATER PUMP HOUSE
Tummala palem TO Stage - I
CWP Sump

Trash Racks
TO Stage - II &
III CWP Sump
Motor
TWS
7 RWP 7 7

Pg-95
Motor
Krishna River

TWS
6 RWP 6 6

Cooling Canal
Motor
TWS
Trash Rack

5 RWP 5 5

Motor
TWS
Sump

RWP 4
Main

4 4

Motor
TWS
3 RWP 3 3

Motor
TWS
2 RWP 2 2

Motor
TWS
1 RWP 1 1

River Water Pumps

Trash Rack

Gravity canal
(Under ground)

3x3=9 GATES
 Hot Water Pump house
Pg-96

Hot Water Pumps

7
GATE 4

6
BUDA MERU CANAL

CT3
GATE 3

4
GATE 2

3 Hot Water from Pumps 3&4

2 CT1
GATE 1

CT2
1

Cooling Towers
Incoming Canal From CT1
 Radiator To Sump Pit CWP SYSTEM

Duct Water
Cooling
TWS Pg-97
CWP 6 6
8
CWB-2
CWB-9 CWB-11

Tubine side BCW

Rtn. Water
Bottom Gland
bearing Sealing Top bearing
4B
7 CWP 5 5
CWB-7B
Condenser 4
From HP BCW Suction header

Duct Water
header
s

Discharge
Tank CWB-7A 4A
6 CWP 4 4

pit
CWB-8 Debris CWB-10
BCW Separator
Water CWB-1

Duct Water
Seal Water 5 CWP 3 3
Discharge Header
Main Sump

CWB-9 CWB-11

Tubine side BCW

CWB-2

Rtn. Water
4 CWP 2 2 3B
CWB-7B

Condenser 3
Duct Water

Discharge
CWB-7A 3A
3

pit
CWP 1 1
CWB-8 Debris CWB-10
Separator
CWB-1
 TRAVELLING WATER SCREEN SYSTEM Pg-98

From 3
CWP
Dich. 4
Lines
6

s s s
TWS
Wash Pumps. 1 2 3

B
F
V
9 -
8 7 6 5 1
4 3 2

Spray nozzle
8 7 6 5 4 3 2 1 TWS
TWS
Trench Wate
Spray nozzle r pit
 DEBRIS & TUBE CLEANING SYSTEM Pg-99

Condenser Outlet valve

CW

Ball
D P Flushing pump Seperator
3 way Reversing
valve

Ball circulating pump

Debris outlet valve

D P Flushing pump
Clarified Water
Inlet

Ball vessel CONDENSER

3 way
rev. Flushing pump Outlet
vavle
CW
Condenser
inlet valve Debris
filter

CW : Circulating water
 Sump
1

4
3
2

To seal water hdr

H P Water Pump

CW Sump
Scraper conyer 3 Scraper conyer 4

Economiser hopper-3
Service water
Economiser hopper-4
Service water

Unit-4 duct hoppers

ESP-4 1st Row Unit-3 duct hoppers

Service water

ESP-4 Trench nozzles

ESP-3 Trench nozzles
Service water

Silo-4
Service water

Unit-3 Silo
HP WATER DISTRIBUTION

Service water
Pg-100

Service water

4
3
2
1

S
S
S

S
L

U
Y
R
R
U
A

E
L
Z
Z
N
O
M
 Pg-101
L P WATER SYSTEM

Service water
L L

R R
A1 A6
L L

R R

To scraper conveyor-3
B1 B6
L L

From HP water line

R R
LP Water Pump C1 C6
1 U L L
n
i D1 R
D6 R
t
2 3

Sump
3
L L

From HP water line

R R
A1 A6
U

To scraper conveyor-4
4 L L
n
i R R
B1 B6
t L L
4
R R
C1 C6
L L

D1 R D6 R

Service water
 MULSIFIRE & FIRE HYDRANT
Pg-102

D.set Self Cooling Stage-I

water UAT 3A

Gear box GT-3

WSP-2 UAT 3B
s
s
WSP-1
3 No’s DV
CHP

FHP-1 Stg-III
FHP-2 ST-3

Sump DV
JP-1 Cable gallery
ST5
ST-5

JP-2 Comp.
Gate valve at
air tank
budameru bridge
Rec. Valve Loop-II
FHP-3 Fire hydrant system
UAT 4A
Loop-I

GT-4
GEAR Air Tank
BOX UAT 4B
Compressor
Self cooling
D.Set water
DV

Drn. DV : Deluge Valve

 FP 1
FLUSHING WATER SYSTEM Pg-103
BF VALVE

FP 2
To BCW Sump
BF VALVE BF Valve
To Condenser

CW duct To Ash slurry sump-1

From CWP-1
Pr.Relief valve BF Valve
To Condenser

To Ash slurry sump-2

CW duct

BF Valve
From CWP-3
To Condenser
To Ash slurry sump-3
CW duct

BF Valve

From CWP-4
To Ash slurry sump-4
To Condenser
CW duct

From CWP-6
 Chlorination

Water
60HP
Chlorination

Water
60HP

CW Duct
From Stage I Clarifiers

Water
CW Duct
Water
Interconnection
valve between Pg-104
St-I & II

Interconnection
Raw Water

Gate
Chemical Chemical
Vent Raw Water
Mixing Mixing
Vent Alum
Alum

Return water
Mixer-1 from Blr/Stage2 Mixer-1
Rec.V

Bridge-1 Bridge-2

1 2 3

Clarified Water
Tank 1
Clarified Water
Tank 2
BCW SYSTEM
Raw Water Sump

Rec. Line
Main Sump

Unit-4
Unit-3
Alum
s s s s s s Tanks
BCWP-3A 3B 3C 4A 4B 4C

06B 06C
BW 06A

BW-12B
Filter Beds
BW-12A
 Pg-105

BCW DISTRIBUTION-1

Seal Oil

CEP-4C
Exci BFP-4C
`
Seal

SUMP
Pit
CEP-4B
GEN BFP-4B
MOT
CEP-4A
VP BFP-4A

Unit - 4

Unit - 3

VP GEN
CEP-3A
MOT

SUMP
BFP-3A Exci
CEP-3B
Seal
COMPRESSOR

BFP-3B Pit
Seal` Oil
PLANT

HOUSE

House
CWP

CEP-3C
A.C

BFP-3C
 Drn Drn BCW DISTRIBUTION-2 Pg-106

Return Header-4

MILLS

Grinder
FDF-4B

Clinker

ECS-4
IDF-4B 4EF
PAF-4B
4CD FDF-4A

`
IDF-4A
PAF-4A Sample coolers
To Ash Sump 4AB
Analyser room
UNIT-4

VENT
BCW
I/L
Silo To SW
Blower ESP-3 ESP-4

UNIT-3
Sample coolers
MILLS Analyser room
3AB
PAF-3A FDF-3A

Grinder
Clinker

ECS-3
3CD
IDF-3A
PAF-3B FDF-3B
3EF
IDF-3B

Drn
Return to BCW
Sump

Return Header-3
P
W
Drn Drn
 ASH SLURRY DISPOSAL SYSTEM Pg-107

To BCWPH

ASH ISPOSAL PUMPS ADP-1C ADL-I

ADP-1A ADP-1B
HP Water Drain Pump 1

Flushing/ Duct water

Ash U3
Slurry CL RW
U4 ADL-II
inlet

Drain Pump 2

ADL-III
To
CLWPH

From BCW Hdr

1
2
3

SEAL WATER PUMPS

CL RW : Clarified return water
 HOT AIR
DRY ASH SYSTEM
Pg-108

SUCTION
INSTRUMENT
COMPRESSOR-II I1 2 3 4 I 5 6 7 8
II 1 2 3 4 II 5 6 7 8
HOT AIR

SILO
SUCTION

INSTRUMENT TANK
COMPRESSOR-I

AIR RECEIVER TANK

III 1 2 3 4
III 5 6 7 8
AIR RECEIVER TANK

LORRY

IV 1 2 3 4 IV 5 6 7 8

SUCTION

CONVEYOR FLUIDISING AIR

COMPRESSOR-II
BLOWERS
V&VI 1 2 3 4
V&VI 5 6 7 8
HOT AIR SUCTION

COMPRESSOR

CONVEYOR
COMPRESSOR-I

FLUIDISING AIR LINE

 SCRAPER CONVEOR Pg-109

Fluid Coupling
Gear Box
BAH Gates 11Pairs & 2 nos Side gates

1 2 3 - - - 11

Motor
LP/HP Water Inlet

Clinker grinder
Drn
.

Overflow Drain

Ash Slurry to trench

 BCW O/L
Instrument air compressor Unit

header
Pg-110

Suction Inter cooler

Blower 1
air

Chamber
Hot air
Filter
Blower 2

BCW BCW
O/L O/L
Pre After
Filter Filter
LP HP
Cylind Crank Case Cylind
er er

BCW
I/L Motor BCW
I/L

Air drying
Air drying
After cooler

unit 2
unit 1
BCW I/L
Header

I/L Header
From Fire
Hydrant
line Air receiving
tank
O/L Header
 INSTRUMENT AIR SYSTEM Pg-111

Inlet header

AR
T4 Outlet
IAC AR header Carbon
4 T5 4 5 reactivated
filter
AR
IAC T3
AR
3 3 6
T6
AR
Air drying units
T2
IAC
2 AR 2 7 Air filter
T7
AR
T1
IAC
Service air header
1 1 8

IAC
7

IAC
6

IAC : Instrument air compressors

IAC unit C ART : Air receiving tank
unit3
5 4 A
 Service air Compressor & Service air system Pg-112
BCW O/L
header

ART
1
ART SAC 1
Suction Inter cooler 7
air
Filter SAC 7

BCW O/L
ART
BCW O/L 2
Service air
LP HP SAC 2
inlet line Cylinder Cylinder

After Cooler
BCW I/L BCW I/L
BCW O/L
Crank Case BCW O/L ART
LP HP 6
Cylinder
ART
Cylinder SAC 6 3
BCW I/L
BCW I/L Moto SAC 3
r To Service
air Ring
Header
ART
Inter cooler 4
SAC 4
ART
5

Air receiver
SAC 5 CA

tank
BCW I/L
Header

UNIT 3
HEADER UNIT 4
From Fire
Hydrant
line
 INSTRUMENT/SERVICE AIR SYSTEM
Service air to Pg-113
Compressor house
ART Stage - III
1
IAC 1
ART
1
Inlet header SAC 1
ART SAC-2

ADU1
ADU8
7
IAC 7
SAC-7 Unit 6
SAC-3
ART
6 Outlet header ADU2
SAC-6
IAC 6 SAC-4
ADU7
SAC-5
ART CA
5
IAC 5
ADU3 Unit 3
ADU6 Filter
Tan
k Unit 4
ART ADU4 Dipc
4 ADU5

IAC 4
Silo
Unit 3 Unit 4 Dipc

ART ART
2 3
IAC 2 IAC 3 IAC : Instrument air compressors
ART : Air receiving tank
 LIGHT OIL SYSTEM U1 U2 U3 U4 U5 U6

Pg-114

LA Vent
Pressure CV

Pressure CV

1000KL LIGHT

LO Decanting Header
OIL TANK 1
25 nos.

LO Pump 4
LO Pump 3
LO Pump 1

LO Pump 2
Railway Tankers

Vent
Tansfer Pump1

Tansfer Pump2

S S S S
1000KL LIGHT
OIL TANK 2
 Steam

HEAVY OIL SYSTEM

Start up Boiler Pg-115
HTR - 4
Vent
4
HFO Pump
3
Decanting Header

HTR - 3
5000KL
35 nos.

HFO
TANK 2 PCV
Railway Tankers

Unit - 2&4
Drn. Unit - 1&3
Screw Pump 3

Screw Pump 1
Screw Pump 2

Return Oil Flash

Vent tank

PCV

HTR - 2

2800KL 2
HFO HFO Pump
TANK 1 1

s s s s s s
HTR - 1

Drain Tank
Main Gate Valve PCV: Pressure control Valve Flash
Drn. Tank

Drain Pump