turbine logics and interlocks

GREENESOL POWER SYSTEMS PVT.LIMITED PROJECT: M/S.MADHUCON-2X135MW - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

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TURBINE INTERLOCK WRITE UP 1

GREENESOL POWER SYSTEMS (P) LIMITED

PROJECT: M/S.MADHUCON-2X135MW THERMAL POWER PLANT (Phase-I)

DOCUMENT NO: 1104-113

REV-0

TURBINE INTERLOCK & CLOSED LOOP WRITE UP


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INDEX

1) MOTORS

1. BOILER FEED WATER PUMP-1 2. VFC LUBE OIL PUMP-1 3. BOILER FEED WATER PUMP-2 4. VFC LUBE OIL PUMP-2 5. CONDENSATE EXTRACTION PUMP-1 6. CONDENSATE EXTRACTION PUMP-2 7. CCW PUMP-1 8. CCW PUMP-2 9. VACCUM PUMP MOTOR-1 & 2 10. HOT WATER PUMP-1 11. HOT WATER PUMP-2 12. CLEAN OIL PUMP 13. DIRTY OIL PUMP 14. GLAND STEAM VENT CONDENSER-1 15. GLAND STEAM VENT CONDENSER-2 16. BALL RECIRCULATION PUMP 17. PURIFICATION PUMP 18. OIL MIST FAN-1 19. OIL MIST FAN-2 20. EMERGENCY OIL PUMP(DC MOTOR) 21. OIL RESERVOIR HEATER 22. HP START UP OIL PUMP 23. AUXILIARY OIL PUMP 24. BARRING GEAR MOTOR 25. JACKING OIL PUMP-1 26. JACKING OIL PUMP-2 27. HP OIL PUMP-1 28. HP OIL PUMP-2

2) MOTORISED VALVES

1. HP SIDE MAIN STEAM BYPASS MOV-LIFT (1044) 2. HP SIDE MAIN STEAM BYPASS MOV RIGHT (1045) 3. HP SIDE MAIN STEAM MOV LEFT 4. HP SIDE MAIN STEAM MOV RIGHT 5. START UP VENT HP SIDE 6. LP SIDE MAIN STEAM MOV LEFT 7. LP SIDE MAIN STEAM MOV RIGHT 8. START UP VENT HP SIDE 9. LP SIDE MAIN STEAM DRAIN-LEFT 10. LP SIDE MAIN STEAM DRAIN-RIGHT


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11. 1ST BLEED MOV 12. 2ND BLEED MOV 13. 3RD BLEED MOV 14. 4TH BLEED MOV 15. BFP-1 DISCHARGE MOV BYPASS 16. BFP-2 DISCHARGE MOV BYPASS 17. HP HEATER-1 BYPASS MOV BYPASS 18. HP HEATER -1 I/L MOV BYPASS 19. HP HEATER-1 O/L MOV BYPASS 20. HP HEATER-2 BYPASS MOV BYPASS 21. HP HEATER-2 I/L MOV BYPASS 22. HP HEATER-2 O/L MOV BYPASS 23. HP SIDE MAIN STEAM LEFT 24. HP SIDE MAIN STEAM RIGHT 25. COLD RE HEATER HEADER DRAIN-1 26. COLD RE HEATER HEADER DRAIN-2 27. LP SIDE MAIN STEAM LEFT 28. LP SIDE MAIN STEAM RIGHT 29. 5TH BLEED MOV 30. LP HEATER-1 I/L MOV 31. LP HEATER-1 BYPASS MOV 32. LP HEATER-1 O/L MOV 33. LP HEATER-2 I/L MOV 34. LP HEATER-2 BYPASS MOV 35. LP HEATER-2 O/L MOV 36. LP HEATER-3 I/L MOV 37. LP HEATER-3 BYPASS MOV 38. LP HEATER-3 O/L MOV 39. BFP-1 DISCHARGE MOV 40. BFP-2 DISCHARGE MOV 41. HP HEATER-1 I/L MOV 42. HP HEATER-1 BYPASS MOV 43. HP HEATER-1 O/L MOV 44. HP HEATER-2 I/L MOV 45. HP HEATER-2 BYPASS MOV 46. HP HEATER-2 O/L MOV 47. BALL RECIRCULATION SECTION-1 48. BALL RECIRCULATION SECTION-2 49. BALL RECIRCULATION DISCHARGE-1 50. BALL RECIRCULATION DISCHARGE-2 51. VACCUM BREAKER 52. CEP-1 DISCHARGE MOV 53. CEP-2 DISCHARGE MOV 54. MAIN OIL TANK TO DIRTY OIL TANK 55. AUXILIARY STEAM LINE FROM PRDS


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3) SOLENIDE VALVES

1. DRAIN SOLENOIDE VALVES: (DCV-01 to DCV-08)

2. Spray water to Dump SOV 3. TURBINE EXHAUST HOOD SPRAYING SYSTEM SOV

4. DEAERATOR TO COMMON SURGE TANK SOV (LCV-909). 5. BOP (20-1) SOV-230V AC

6. BOP (20-2) SOV-230V AC 7. EOP (20-1) SOV-230V AC

8. EOP (20-2) SOV-230V AC

4) CONTROL VALVES

1. TEMPERATURE CONTROL IN GLAND SEALING LINE(TCV-905)

2. PRESSURE CONTROL IN CLAND SEALING LINE (PCV-901) 3. TEMPERATURE CONTROL IN PEGGING STEAM LINE (TCV-906) 4. PRESSURE CONTROL IN PEGGING STEAM LINE (PCV-902)

5. GLAND SEALING DRAIN TO LH-1 (FCV-000) 6. TEMPERATURE CONTROL IN AUXILLARY STEAM LINE (TCV-907)

7. PRESSURE CONTROL IN AUXILLARY STEAM LINE (PCV-903) 8. MINIMUM RECIRCULATION TO CONDENSER (FCV-941) 9. CONDENSER TO LP-1(LCV-907)

10.FROM EXPORT CONTROL VALVE TO SURGE TANK ) LCV-908) 11.SURGE TANK TO HOT WELL (LCV-907A)

12.CONDENSETE TO LP HEATER-2 (LCV-904) 13.LP HEATER-1 TO HOTWELL (LCV-904A) 14.LP HEATER-3 TO LP HEATER-2 (LCV-902)

15.LP HEATER-3 TO HOT WELL (LCV-902A) 16.LP HEATER-2 TO LP HEATER-1 (LCV-903)

17.LP HEATER-2 TO HOT WELL (LCV-903A) 18.HP HEATER-2 TO HP HEATER-1 (LCV-905A) 19.HP HEATER-2 TO HP FLASH TANK (LCV-905B)

20.HP HEATER-1 TO DEAERATOR (LCV-906) 21.HP HEATER-1 TO HP FLASH TANK (LCV-906A)

22.LUBE OIL PRESSURE REGULATOR (PRV-910)

5) Turbine Trips from DCS to ETS:

6) TURBINE ALARMS (SOE) in DCS:


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7) OPEN LOOPS

8) PERFORMANCE CALCULATION

9) DEH LOGICS

10) EMERGENCY TRIP SYSTEM (ETS)


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FUNCTIONAL WRITE UP

BOILER FEED WATER PUMP - 1

BFP #1 shall be switched on manually after switching on Aux. Lube

oil pump in auto/Manual:

Start Permissive (VFC Aux. lube oil pump #1) 1. Lube oil temp. Downstream of heat exchanger not high.

a. TE-27A (


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Starting permissive (BFP#1)

A. BFP #1 Pump in remote (DCS) mode. B. BFP #1 Pump not in trip condition. C. Ready to start permissive from HT breaker D. Local stop not active. E. Auxiliary lube oil pump-1 ON feedback. F. VFC Scoop is in minimum position (0.8bar (PT-19A).

H. Dearator water level (LAL-916) is not low. I. BFP #1 Pump Suction Valve is in open position (ZSO-3301).

J. BFP #1 Pump Discharge MOV is close Position (ZSC-1034). K. BFP #1 Pump discharge bypass MOV close position (ZSC-1034A).

L. Boiler Stream Drum Level not high.

If Starting Per missives OK. Manual Start

1) Start From DCS.

Stop Interlocks (BFP#1)

BFP #1 shall be stopped automatically or manually when in remote mode of operation, the conditions are:

1) Any Motor Winding Temperature are HI HI(R, Y, B) >120Deg. 2) Any Motor bearing Temperature are HI HI (DE, NDE) >80Deg.

3) Any Pump Bearing Temperature (NDE, DE, THRUST 1 & 2) are High High (>90deg).

4) Any Vibrations motor or pump (VAHH-901, 902, 903, 904, 905, 906, 907 and 908) are High High.

5) Dearator Water Level (LALL-916) is Low Low. 6) BFP #1 Pump Suction valve is closed (ZSC-3301).

7) BFP #1 Pump Suction Differential Pressure Switch (DPS-901) is high.

8) Any VFC Coupling Bearing temperatures (TE-60.1A, 59.1A, 58.1A, 57.1A, 56.1A, 40A, 41A and 44A) high high. (>95 deg.)

9) Any VFC lube Oil Temperature are high high a. TE-27.1A& 27.2A (60 Deg.)

b. TE-29.1A&29.2A (70Deg.)

c. TE-33.1A&33.2A (130Deg.) d. TE-35.1A & 35.2A (85Deg.)

10) Lube Oil Pressure (PT-19.1A) is less than 0.8bars. 11) Stop from DCS when in remote mode.


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12) Trip from HT breaker.

13) CCW discharge pressure (PT-982)


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1. Lube oil pressure (PT-19.2B)>2.9bar when BFP#2 is running.

2. Trip FB from MCC. 3. DCS stop.

Refer Interlock Logic Diagram: 1104-113-A-04.

Starting permissive (BFP#2) 2. BFP #2 Pump in remote (DCS) mode.

3. BFP #2 Pump not in trip condition. 4. Ready to start permissive from HT breaker

5. Local stop not active.

6. Auxiliary lube oil pump-2 ON feedback. 7. VFC Scoop is in minimum position (0.8bar (PT-19B). 9. Dearator water level (LAL-916) is not low.

10. BFP #2 Pump Suction Valve is in open position (ZSO-3302). 11. BFP #2 Pump Discharge MOV is close Position (ZSC-1035).

12. BFP #2 Pump Discharge bypass MOV close position (ZSC-1035A).

13. Boiler Stream Drum Level not high.

If starting per missives Ok. Manual Start

1) Start From DCS.

Stop Interlocks (BFP#2)

BFP #2 shall be stopped automatically or manually when in remote

mode of operation, the conditions are:

1. Any Motor Winding Temperature are HI HI(R, Y, B) >120Deg. 2. Any Motor bearing Temperature are HI HI (DE, NDE) >80Deg.

3. Any Pump Bearing Temperature (NDE, DE, THRUST 1 & 2) are High High (>90deg).

4. Any Vibrations motor or pump (VAHH-909, 910, 911, 912, 913, 914, 915 and 916) are High High.

5. Dearator Water Level (LALL-916) is Low Low. 6. BFP #1 Pump Suction valve is closed (ZSC-3302).

7. BFP #1 Pump Suction Differential Pressure Switch (DPS-902) is high.

8. Any VFC Coupling Bearing temperatures (TE-60.1B, 59.1B,

58.1B, 57.1B, 56.1B, 40B, 41B and 44AB high high. (>95 deg.) 9. Any VFC lube Oil Temperature are high high

a. TE-27.1B & 27.2B (60 Deg.) b. TE-29.1B & 29.2B (70Deg.)


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c. TE-33.1B & 33.2B (130Deg.)

d. TE-35.1B & 35.2B (85Deg.) 10. Lube Oil Pressure (PT-19.1B) is less than 0.8bars.

11. Stop from DCS when in remote mode. 12. Trip from HT breaker.

13. CCW discharge pressure (PT-982)


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CONDENSATE EXTRACTION PUMP -1

Condensate Extraction Pump-1 shall be switched on from DCS

either in Manual mode or Auto mode, which can be selected by using soft selector switch.

Starting Per missives (CEP#1)

1) Hot well level (LALL-912) not low low. 2) Condensate Extraction Pump-1 Suction Valve (ZSO-902) is in

open position.

3) CEP Pump-1 in remote (DCS) mode. 4) CEP Pump-1 not in trip condition from VFD.

5) Ready to start permissive from VFD. 6) Local stop not active.

7) Discharge MOV (1023) in close FB.

If Start Per missives are OK. Manual Start mode

1. Start from DCS

Auto Start mode 1. CEP-2 trip FB from VFD.

2. Discharge header pressure low(PS-941) 3. Hot well level high (LAH-912)

Stop Interlocks (CEP-1)

1) Hot well level (LALL-912) low low. 2) CEP #1 Motor any Winding (R, Y and B) temperature>120 Deg.

3) CEP#1 Motor any Bearing (NDE and DE) temperatures>90 Deg. 4) Trip FB from VFD

5) Stop from DCS



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CONDENSATE EXTRACTION PUMP -2

Condensate Extraction Pump-2 shall be switched on from DCS either in Manual mode or Auto mode, which can be selected by

using soft selector switch.

Starting Per missives (CEP#2)

1. Hot well level (LALL-912) not low low.

1. Condensate Extraction Pump-1 Suction Valve (ZSO-904) is in open position.

2. CEP Pump-2 in remote (DCS) mode.

3. CEP Pump-2 not in trip condition from VFD. 4. Ready to start permissive from VFD.

5. Local stop not active. 6. Discharge MOV (1024) in close FB.

If start per missives Ok.

Manual Start mode 1. Start from DCS

Auto Start mode

1. CEP-1 trip FB from VFD. 2. Discharge header pressure low(PS-941)

3. Hot well level high (LAH-912)

Stop Interlocks (CEP-2)

1) Hot well level (LALL-912) low low. 2) CEP #2 Motor any Winding (R, Y and B) temperature>120 Deg.

3) CEP #2 Motor any Bearing (NDE and DE) temperatures>90 Deg. 4) Trip FB from VFD

5) Stop from DCS



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CCW PUMP -1

CCW Pump-1 shall be switched on from DCS either in Manual mode.

Starting Per missives (CCWP#1)-Manual mode

1. Common surge tank level (LT-901A) not low (>25%). 2. CCW Pump-1 in remote (DCS) mode.

3. CCW Pump-1 not in trip condition from HT Breaker. 4. Ready to start from HT breaker.


If start per missives OK.

Manual Start 1. Start from DCS.

Stop Interlocks (CCWP-1)-Manual Mode

1. Common surge tank level (LT-901A) low (120

Deg. 3. CCWP#1 Motor any Bearing (NDE and DE) temperatures>90

Deg. 4. Trip FB from HT breaker.

5. Stop form DCS.


CCW PUMP -2

CCW Pump-2 shall be switched on from DCS either in Manual mode.

Starting Per missives (CCWP#2)-Manual mode

1. Common surge tank level (LT-901A) not low (>25%).

2. CCW Pump-2 in remote (DCS) mode. 3. CCW Pump-2 not in trip condition from HT Breaker.

4. Ready to start from HT breaker. 5. Local stop not active.


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If start per missives are OK. Manual Mode

1. Start from DCS.

Stop Interlocks (CCWP-2)-Manual Mode

1. Common surge tank level (LT-901A) low (120 Deg.

3. CCWP#2 Motor any Bearing (NDE and DE) temperatures>90

Deg. 4. Trip FB from HT breaker.

5. Stop form DCS.

Refer Interlock Logic Diagram: 1104-113-A-O8.

VACCUM PUMP MOTOR-1& 2 and Recirculation Motor 1&2:

Please refer document Edwards contract no:

NXP518000&NXP519000.

HOT WATER PUMP -1

Hot water Pump-1 shall be switched on from DCS either in Manual

mode or Auto mode, which can be selected by using soft selector switch.

Starting Per missives (HWP#1)

1. LP Heater-1 level (LAL-906) not low low. 2. HW Pump-1 in remote (DCS) mode.

3. HWP Pump-1 not in trip condition from MCC. 4. Ready to start permissive from MCC.


If starting per missives are OK Manual Start mode

1. Start from DCS


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Auto Start mode

1. HWP-2 trip FB from MCC. 2. LP Heater level-1 high (LAH-907)

Stop Interlocks (HWP-1)

1. LP Heater-1 level (LAL-906) low low. 2. Trip FB from MCC

3. Stop from DCS


HOT WATER PUMP -2

Hot water Pump-2 shall be switched on from DCS either in Manual mode or Auto mode, which can be selected by using soft selector

switch.

Starting Per missives (HWP#2)

1. LP Heater-1 level (LAL-906) not low low. 2. HW Pump-2 in remote (DCS) mode.

3. HWP Pump-2 not in trip condition from MCC. 4. Ready to start permissive from MCC.


If starting per missives are OK


Auto Start mode

1. HWP-1 trip FB from MCC. 2. LP Heater level-1 high (LAH-907)

Stop Interlocks (HWP-2)

1. LP Heater-1 level (LAL-906) low low. 2. Trip FB from MCC

3. Stop from DCS


CLEAN OIL PUMP


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COP shall be switched on manually, only when the following Conditions are satisfied:

Starting Per missives (COP)-Manual mode

1) Cleaning oil tank level (LAL-901A) not low. 2) COP in remote mode.

3) COP not in trip condition. 4) Ready to start from MCC.

5) Local stop not active.


Manual Mode 1) Start from DCS.

Stop Interlocks (COP)

1) Cleaning oil tank level (LAL-901A) is low.

2) Unit-1 Main oil tank level high(LTI-133) 3) Unit-2 Main oil tank level high(LTI-133)

4) Stop from DCS.


DIRTY OIL PUMP

DOP shall be switched on manually, only when the following Conditions are satisfied:

Starting Per missives (DOP)-Manual mode

1. Dirty oil tank level (LAL-901) not low. 2. DOP in remote mode.

3) DOP not in trip condition. 4) Ready to start from MCC.

5) Local stop not active.

If starting per missives are OK Manual Mode

1) Start from DCS.

Stop Interlocks (DOP)

1. Dirty oil tank level (LAL-901) is low. 2. Unit-1 Main oil tank level high(LTI-133)


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3. Unit-2 Main oil tank level high(LTI-133)

4. Stop from DCS.


Gland steam vents condenser FAN-1:

GSVC-1 shall be switched on manually, only when the following Conditions are satisfied:

Starting Per missives (GSVC-1)-Manual mode

1. GSVC-1 in remote mode.

2. GSVC-1 not in trip condition. 3. Ready to start from MCC.



1) Start from DCS.

Stop Interlocks (GSVC-1) 1. GSVC-1 stop from DCS.


Gland steam vents condenser FAN-2:

GSVC-2 shall be switched on manually, only when the following Conditions are satisfied:

Starting Per missives (GSVC-2)-Manual mode

1. GSVC-2 in remote mode. 2. GSVC-2 not in trip condition.

3. Ready to start from MCC. 4. Local stop not active.



Stop Interlocks (GSVC-2) 1. GSVC-2 stop from DCS.



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Ball Recirculation Pump: This motor is PLC based controlled not from DCS.

Purification Pump:

This motor is PLC based controlled not from DCS.

Oil mist FAN-1: OMF-1 shall be switched on manually, only when the following

Conditions are satisfied:

Starting Per missives (OMF-1)-Manual mode

1. OMF-1 in remote mode. 2. OMF-1 not in trip condition.

3. Ready to start from MCC. 4. Local stop not active.



Stop Interlocks (OMF-1)

1. OMF-1 stop from DCS.


Oil mist FAN-2:

OMF-2 shall be switched on manually, only when the following Conditions are satisfied:

Starting Per missives (OMF-2)-Manual mode

1. OMF-2 in remote mode.

2. OMF-2 not in trip condition. 3. Ready to start from MCC.



1) Start from DCS.

Stop Interlocks (OMF-2)

1. OMF-2 stop from DCS.


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EMERGENCY OIL PUMP (DC MOTOR)

Starting Per missives (EOP)-Auto mode 1. EOP DC Supply ON.

2. FFR NOT OPERATED. 3. Local stop not active.

4. Ready to start from EOP panel



Auto Mode

1. EOP inlet Lube Oil Pressure (PS-63/1-EOP) is low. OR

2. EOP inlet Lube Oil Pressure (PS-23/2-EOP) is low.

Stop Interlocks (EOP)

1. Stop from DCS.


OIL RESERVOIR HEATER

Oil reservoir heater shall be switched on from DCS either in Manual mode or Auto mode, which can be selected by using soft selector

switch.

Starting Per missives (ORH): 1. Ready to start permissive from MCC.



Auto Start mode

1. ORH no trip condition from MCC.

2. Lube oil temperature (TE-22)


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Stop Interlocks (ORH):

1. Lube oil temperature (TE-22) >28Deg. 2. Trip FB from MCC

3. Stop from DCS


HP START UP OIL PUMP

SOP shall be started in Manual mode, When SOP shall Be selected in remote mode of operation. Local / remote selection

Shall be from DCS only.

Starting Per missives (HP SOP)-Manual mode 1. Ready to start from DCS



1) Start from DCS.

Stop Interlocks (HP SOP) 1. Stop from DCS 2. Trip FB from MCC 3. Turbine reaches rated RPM (3000 RPM) with delay of 3S time.


AUXILARY OIL PUMP

AOP shall be started in Auto/Manual mode, When AOP shall

Be selected in remote mode of operation. Local / remote selection Shall be from DCS only.

Starting Permissive (AOP)-

1. Ready to start from DCS 2. Local stop not active.

If starting pre missives are OK

Manual Start mode


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1. Start from DCS.

Auto Start mode

1. AOP Lube Oil Pressure (PS-63/1 BOP) is low. OR

2. AOP Lube Oil Pressure (PS-63/2 BOP) is low.

NOTE: AOP forcedly shall made select to auto mode when turbine trips.

Stop Interlocks (AOP) 1. Stop from DCS 2. Trip FB from MCC


BARRING GEAR MOTOR

BGM shall be started in Manual mode, When BGM shall

Be selected in remote mode of operation from BGM panel.

BGM shall be switched on manually, only when the following Conditions are satisfied:

Starting Permissive (BGM)-Manual mode

1. Lube Oil Header Pressure switch (PIS-317) is not low. 2. Turbine Speed Zero (from TSI panel).


Manual Mode 1. Start from DCS.

Stop Interlocks (AOP)

1. Lube Oil Header Pressure Switch (PIS-317) is low.

2. Stop from DCS.


JACKING OIL PUMP-1

JOP #1 shall be started in Auto/Manual mode.


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Starting Permissive (JOP-1)- 1. Lube oil header pressure (PT-128)>0.9 kg/cm2.

Manual mode

1. Start from DCS.

Auto mode 1) Jacking Oil Device Pressure (PS-505) is Low.

2) Jack Oil Pump-2 Stop.

3) Turbine speed0.9 kg/cm2.

Manual mode 1. Start from DCS

Auto mode

1. Jacking Oil Device Pressure (PS-505) is Low. 2. Jack Oil Pump-1 Stop.

3. Turbine speed


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HP OIL PUMP-1

HOP #1 shall be started when HOP #1 selected to remote mode from EH panel.

Starting Permissive (HP PUMP-1) 1) DCS mode selected from EH panel 2) 220V AC OK from EH panel 3) Int.lock enable from EH panel


Manual Start mode 1) Start from DCS

Auto Start mode

1. PS-63/LP. 2. HP Oil Pump-2 Stop.

3. PS-63/MP.

Stop Interlocks (HP PUMP-1)

1. DCS mode not selected 2. EH oil tank level


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3. PS-63/MP.

Stop Interlocks (HP PUMP-2) 1. DCS mode not selected

2. EH oil tank level


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3) HP SIDE MAIN STEAM DRAIN MOV-LEFT (1004)

1) MOV-1004 in remote (DCS) mode. 2) MOV-1004 not in trip condition.

3) MOV-1004 Close Command not Active. 4) Stop - not active.

5) Local Push Button is in release condition.

The above Conditions are satisfied

1) Open Command from DCS.

2) Close Command from DCS. Refer Interlock Logic Diagram: 1104-113-06.

4) HP SIDE MAIN STEAM BYPASS MOV-LEFT (1005)

1) MOV-1005 in remote (DCS) mode.

2) MOV-1005 not in trip condition. 3) MOV-1005 Close Command not Active.

4) Stop - not active. 5) Local Push Button is in release condition.

The above Conditions are satisfied 1) Open Command from DCS.

2) Close Command from DCS.

Refer Interlock Logic Diagram: 1104-113-07.

5) START UP VENT HP SIDE (1015)






2) Close Command from DCS. .


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6) LP SIDE MAIN STEAM BYPASS MOV-LEFT (1048)







7) LP SIDE MAIN STEAM BYPASS MOV-LEFT (1049)







8) START UP VENT LP SIDE (1015A)

1) MOV-1015A in remote (DCS) mode. 2) MOV-1015A not in trip condition.

3) MOV-1015A Close Command not Active. 4) Stop - not active.





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9) LP SIDE MAIN STEAM DRAIN MOV-LEFT (1012)



4) Stop - not active.





10) LP SIDE MAIN STEAM DRAIN MOV-LEFT (1013)







Refer Interlock Logic Diagram: 1104-113-13. 11) BLEED -1 to HP Heater-2 (MOV-1018 INCHING TYPE) Bleed#1 MOV shall be opened or closed manually in remote mode

(DCS) when the following conditions are occurred.

Opening Permissive (Bleed-1 MOV) 1. Remote (DCS) mode selected

2. No trip FB.

3. No Stop FB. 4. No Close Command.

5. Local Push Button is in release condition


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Or HP Heater-2 level high High (LT-905)


12) BLEED -2 to HP Heater-1 (MOV-1019 INCHING TYPE) Bleed#2 MOV shall be opened or closed manually in remote mode


1. Remote (DCS) mode selected 2. No trip FB.


5. Local Push Button Release Condition 6.



OR HP Heater-1 level high High (LT-906)


13) BLEED -3 to Deaerator (MOV-1020 INCHING TYPE) Bleed#3 MOV shall be opened or closed manually in remote mode



2. No trip FB 3. No Stop FB.

4. No Close Command. 5. Local Push Button is in release condition



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14) BLEED -4 to LP Heater-3 (MOV-1021 INCHING TYPE)

Bleed#4 MOV shall be opened or closed manually in remote mode (DCS) when the following conditions are occurred.


2. No trip FB





OR LP Heater-3 level High High(LT-902)

Refer Interlock Logic Diagram: 1104-113-17. 15) BFP -1 (Discharge MOV BYPASS-1034A INCHING TYPE) BFP#1 discharge BY PASS MOV shall be opened or closed on

automatically or manually in remote mode (DCS) when the

following conditions are occurred.

Opening Per missives (BFP#1 discharge BYPASS MOV)- 1. Remote (DCS) mode selected

2. No trip FB 3. No Stop FB.

4. No Close Command. 5. Local Push Button is in release condition

Manual Open

1. Open command from DCS.

Auto Open 1. BFP#1 VFD ON FB with 1s delays open 20% with reference of

position FB.

Closing Per missives (BFP#1 discharge BYPASS MOV)-


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Manual Close 1. Close command from DCS.

Auto Close

1. BFP#1 discharge MOV (1034) open FB with 3s delays BFP-1 discharge Bypass MOV closing.

. Refer Interlock Logic Diagram: 1104-113-18.

16) BFP -2 (Discharge MOV BYPASS-1035A INCHING TYPE) BFP #2 discharge BY PASS MOV shall be opened or closed on

automatically or manually in remote mode (DCS) when the following conditions are occurred.

Opening Per missives (BFP#2 discharge BYPASS MOV)

1. Remote (DCS) mode selected 2. No trip FB



Manual Open 1. Open command from DCS.

Auto Open 1. BFP#2 VFD ON FB with 1s delays open 20% with reference of

position FB.

Closing Per missives (BFP#2 discharge BYPASS MOV)

Manual Close 1. Close command from DCS.

Auto Close

2. BFP#2 discharge MOV (1035) open FB with 3s delays, BFP-2 discharge Bypass MOV closing.


17) HP HEATER-1 BYPASS MOV BYPASS (1036A)

Start Permissive


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1) MOV-1036A in remote (DCS) mode.

2) MOV-1036A not in trip condition. 3) MOV-1036A Close Command not Active.






18) HP HEATER-1 I/L MOV BYPASS (1037A)






19) HP HEATER-1 O/L MOV BYPASS (1038A)






20) HP HEATER-2 BYPASS MOV BYPASS (1039A)


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21) HP HEATER-2 I/L MOV BYPASS (1040A)








22) HP HEATER-2 O/L MOV BYPASS (1041A)









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23) HP SIDE MAIN STEAM MOV-LEFT (1042)







24) HP SIDE MAIN STEAM MOV-RIGHT (1043)







25) COLD REHEATER HEADER DRAIN-1 (1050B)

1) MOV-1050B in remote (DCS) mode. 2) MOV-1050B not in trip condition.

3) MOV-1050B Close Command not Active. 4) Stop - not active.






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26) COLD REHEATER HEADER DRAIN-2 (1051B)

1) MOV-1051B in remote (DCS) mode.

2) MOV-1051B not in trip condition. 3) MOV-1051B Close Command not Active.





27) LP SIDE MAIN STEAM MOV-LEFT (1046)







28) LP SIDE MAIN STEAM MOV-LEFT (1047)







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29) BLEED -5 to LP Heater-2 (MOV-1022 INCHING TYPE)

Bleed#5 MOV shall be opened or closed manually in remote mode (DCS) when the following conditions are occurred.

Opening Permissive (Bleed-5 MOV)-Manual mode

1. Remote (DCS) mode selected 2. Open command from DCS.

3. No trip FB

4. No Stop FB. 5. No Close Command



2) Close Command from DCS. OR

1. LP Heater-2 level high(LT-903) Refer Interlock Logic Diagram: 1104-113-32.

30) LP HEATER-1 I/L MOV (1025)







31) LP HEATER-1 BYPASS MOV (1026)





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32) LP HEATER-1 O/L MOV (1027)


















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2) MOV-1032 not in trip condition.













39) BFP -1(Discharge MOV-1034 ON & OFF TYPE)

BFP#1 discharge BY PASS MOV shall be opened or closed on

manually in remote mode (DCS) when the following conditions are occurred.

Opening Per missives (BFP #1 discharge MOV)



5. Local Push Button is in release condition.





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40) BFP -2(Discharge MOV-1035 ON & OFF TYPE)

BFP#2 discharge BY PASS MOV shall be opened or closed on manually in remote mode (DCS) when the following conditions

are occurred.

Opening Per missives (BFP#2 discharge MOV) 1. Remote (DCS) mode selected

2. No trip FB


5. Local Push Button is in release condition.




41) HP HEATER-1 I/L MOV (1036)



3) MOV-1036 Close Command not Active. 4)Stop - not active.





42) HP HEATER-1 BYPASS MOV (1037)






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43) HP HEATER-1 O/L MOV (1038)







44) HP HEATER-2 I/L MOV (1039)






In release condition. 6) Stop from DCS.


45) HP HEATER-2 BYPASS MOV (1040)



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3) MOV-1040 Close Command not Active.





46) HP HEATER-2 O/L MOV (1041)







47) BALL RECIRCULATION SECTION-1(1052)







48) BALL RECIRCULATION SECTION-2(1053)



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49) BALL RECIRCULATION DISCHARGE-1(1054)







50) BALL RECIRCULATION DISCHARGE-2(1055)







51) VACCUM BREAKER (1011)



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52) CONDENSATE EXTRACTION PUMP -1(Discharge MOV-1023) CEP #1 discharge MOV shall be opened or closed on automatically

or manually in remote mode (DCS) when the following conditions are occurred.

Opening Per missives (CEP#1 discharge MOV)-



5. Local Push Button is in Release Condition.


Auto Open 1. CEP#1 VFD ON FB with 3s delays opening.

Closing Per missives (CEP#1 discharge MOV)

Manual Close

1. Close command from DCS.

Auto Close 7. CEP#1 VFD OFF FB with 3s delays closing.


53) CONDENSATE EXTRACTION PUMP -2(Discharge MOV-1024) CEP #2 discharge MOV shall be opened or closed on automatically

or manually in remote mode (DCS) when the following conditions

are occurred.


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Opening Per missives (CEP#2 discharge MOV)-



5. Local Push Button is in Release Condition.


Auto Open 1. CEP#2 VFD ON FB with 3s delays opening.

Closing Per missives (CEP#2 discharge MOV)

Manual Close

1. Close command from DCS.

Auto Close 1. CEP#2 VFD OFF FB with 3s delays closing.


54) MAIN OIL TANK TO DIRTY OIL TANK (1056)







55) AUXILIARY STEAM LINE FROM PRDS (1057)

Start Permissive



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SOLENIDE VALVES

1. DRAIN SOLENOIDE VALVES: (DCV-01 to DCV-08) All SOVs are 230V AC supply, should open or close manually all SOVs

at a time.

2. Spray water to Dump SOV (SOV-941-220VDC):When ever any of the LP BY PASS Valves 1or2 is open with reference of

position feedback >5%(ZT-903 or ZT-904) should open SOV-941 and shall be closed after closing of LP BYPASS VALVES

1&2 with reference of feedback


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Closed Loops:

1) PRDS Temperature control steam to Gland Sealing (TCV-

905): This control loop is used to control the PRDS temperature. The temperature element (TE-916) senses the PRDS line temperature. The

output temperature signal from temperature element is fed to a temperature indicating controller (TIC-916) as a process variable. The

process variable signal is compared with the operator feed manual set point in the temperature indicating controller. The output of the

temperature controller operates the temperature control valve (TCV-905) on the PRDS line to control the PRDS temperature.

Refer closed loop logic diagram: 1104-02-2820-2

2) PRDS PRESSURE CONTROL STEAM TO GLAND SEALING (PCV-901): This control loop is used to control the PRDS pressure. The

pressure transmitter (PT-916) senses the PRDS line pressure. The

output pressure signal is fed to a pressure indicating controller (PIC-916) as a process variable. The process variable signal is compared

with the fixed set point in the pressure indicating controller. The output of the pressure controller operates the PRDS pressure control

valve (PCV-901) on the PRDS line to control the PRDS pressure. Refer closed loop logic diagram: 1104-02-2820-3

3) PRDS TEMPERATURE CONTROL STEAM TO PEGGING STEAM

(TCV-906): This control loop is used to control the PRDS temperature. The temperature element (TE-917) senses the PRDS line

temperature. The output temperature signal from temperature element is fed to a temperature indicating controller (TIC-917) as a

process variable. The process variable signal is compared with the operator feed manual set point in the temperature indicating

controller. The output of the temperature controller operates the

temperature control valve (TCV-906) on the PRDS line to control the PRDS temperature.


4) PRDS PRESSURE CONTROL STEAM TO PEGGING STEAM (PCV-902): This control loop is used to control the PRDS pressure. The

pressure transmitter (PT-917) senses the PRDS line pressure. The output pressure signal is fed to a pressure indicating controller (PIC-

917) as a process variable. The process variable signal is compared with the fixed set point in the pressure indicating controller. The

output of the pressure controller operates the PRDS pressure control valve (PCV-902) on the PRDS line to control the PRDS pressure.


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Refer closed loop logic diagram:p 1104-02-2820-5

5) GLAND SEALING DRAIN TO LP HEATER-1 (FCV 000): This

control loop is used to control GLAND SEALING STAM. The pressure transmitter (PT-919) senses GLAND SEALING STEAM PRESSURE is

given as process variable to level controller. The process variable signal is compared with the operator feed manual set point in the

controller. When the GLAND SEALING STEAM PRESSURE comes above the set point, controller will open FCV-000 to maintain the pressure.


6) PRDS TEMPERATURE CONTROL STEAM TO AUXILIARY STEAM

HEADER (TCV-907): This control loop is used to control the PRDS temperature. The temperature element (TE-59) senses the PRDS line

temperature. The output temperature signal from temperature element is fed to a temperature indicating controller (TIC-59) as a

process variable. The process variable signal is compared with the operator feed manual set point in the temperature indicating

controller. The output of the temperature controller operates the temperature control valve (TCV-907) on the PRDS line to control the

PRDS temperature. Refer closed loop logic diagram: 1104-02-2820-7

7) PRDS PRESSURE CONTROL STEAM TO AUXILIARY STEAM

HEADER (PCV-903): This control loop is used to control the PRDS

pressure. The pressure transmitter (PT-60) senses the PRDS line pressure. The output pressure signal is fed to a pressure indicating

controller (PIC-60) as a process variable. The process variable signal is compared with the fixed set point in the pressure indicating controller.

The output of the pressure controller operates the PRDS pressure control valve (PCV-903) on the PRDS line to control the PRDS

pressure. Refer closed loop logic diagram: 1104-02-2820-8

8) MINIMUM RECIRCULATION TO CONDENSER (FCV-941): This

control loop is used to control minimum recirculation to condenser. The flow transmitter (FT-942) senses the line flow from GLAND STEAM

VENT CONDESER. The output of flow signal is fed to a flow indicating controller (FIC-941) as a process variable. The process variable signal

is compared with the fixed set point in the flow indicating controller.

The output of the flow controller operates the flow control valve (FCV-941) on the minimum recirculation line.



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9) Hot Well LEVEL CONTROL (LCV-907): This control loop is used

to control the LP HEATER level. The level transmitter (LT-907A, LT-907B and LT-907C senses the hot well tank level. These signals from

three level transmitters are given to a 2 out of 3 logic block. This block output is given to process variable to level controller LIC-

907.The process variable signal is compared with the operator feed manual set point in the controller.

When the hot well level comes above the set point, controller will open LCV-907 to maintain the level.


10) CONDENSATE FROM EXPORT CONTROL VALVE TO COMMON

SURGE TANK (LCV-908): This control loop is used to control the Common surge tank level. Two numbers of level transmitters (LT-908

& LT-909) senses the Deaerator tank level. The signals from two level transmitters are given to a 1 out of 2 logic block. The 1 out of 2 output

is given as process variable to level controller. The process variable signal is compared with the operator feed manual set point in the

controller. When the surge tank level comes below the set point, controller will open LCV-908 to maintain the level.


11) COMMON SURGE TANK TO HOT WELL (LCV-907A): This control loop is used to control the hot well level. The level transmitter

(LT-907A, LT-907B, and LT-907C (2 OUT OF 3 LOGIC)) senses the

hot well level is given as process variable to level controller. The process variable signal is compared with the operator feed manual set

point in the controller. When the surge tank level comes above the set point, controller will open LCV-907A to maintain the level.


12) CONDENSATE TO LP HEATER-2 (LCV-904): This control loop is used to control the level in LP HEATER-2. The level transmitter (LT-

903) senses the LP HEATER-2 level is given as process variable to level controller. The process variable signal is compared with the operator

feed manual set point in the controller. When the LP HEATER-2 level comes above the set point, controller will open LCV-904 to maintain

the level. Refer closed loop logic diagram: 1104-02-2820-13

13) LP HEATER-1 LEVEL CONTROL (LCV-904A): This control loop is used to control the LP HEATER-1 level. The level transmitter (LT-

904) senses the LP HEATER-1 level is given as process variable to level controller. The process variable signal is compared with the operator


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feed manual set point in the controller. When the LP HEATER-1 level

comes above the set point, controller will open LCV-904A to maintain the level.


14) LP HEATER-3 DRAIN TO LP HEATER-2 CONTROL (LCV-902): This control loop is used to control the LP HEATER-3 level. The level

transmitter (LT-902) senses the LP HEATER-3 level is given as process variable to level controller. The process variable signal is compared

with the operator feed manual set point in the controller. When the LP

HEATER-3 level comes above the set point, controller will open LCV-902 to maintain the level.


15) LP HEATER-3 TO HOT WELL CONTROL (LCV-902A): This control loop is used to control the LP HEATER-3 level. The level


with the operator feed manual set point in the controller. When the LP HEATER-3 level comes above the set point, controller will open LCV-

902A to maintain the level. Refer closed loop logic diagram: 1104-02-2820-16

16) LP HEATER-2 DRAIN TO LP HEATER-1 CONTROL (LCV-903):

This control loop is used to control the LP HEATER-2 level. The level


with the operator feed manual set point in the controller. When the LP HEATER-2 level comes above the set point, controller will open LCV-

903 to maintain the level. Refer closed loop logic diagram: 1104-02-2820-17

17) LP HEATER-2 TO LP HOT WELL CONTROL (LCV-903A): This

control loop is used to control the LP HEATER-2 level. The level transmitter (LT-903) senses the LP HEATER-2 level is given as process

variable to level controller. The process variable signal is compared with the operator feed manual set point in the controller. When the LP

HEATER-2 level comes above the set point, controller will open LCV-903A to maintain the level.


18) HP HEATER-2 DRAIN TO LP HP HEATER-1 CONTROL (LCV-

905A): This control loop is used to control the HP HEATER-2 level. The level transmitter (LT-905) senses the HP HEATER-2 level is given as


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process variable to level controller. The process variable signal is

compared with the operator feed manual set point in the controller. When the HP HEATER-2 level comes above the set point, controller will

open LCV-905A to maintain the level. Refer closed loop logic diagram: 1104-02-2820-19

19) HP HEATER-2 TO LP HP FLASH TANK CONTROL (LCV-905B):

This control loop is used to control the HP HEATER-2 level. The level transmitter (LT-905) senses the HP HEATER-2 level is given as process

variable to level controller. The process variable signal is compared

with the operator feed manual set point in the controller. When the HP HEATER-2 level comes above the set point, controller will open LCV-

905B to maintain the level. Refer closed loop logic diagram: 1104-02-2820-20

20) HP HEATER-1 DRAIN TO DEAERATOR CONTROL (LCV-906):

This control loop is used to control the HP HEATER-1 level. The level transmitter (LT-906) senses the HP HEATER-1 level is given as process

variable to level controller. The process variable signal is compared with the operator feed manual set point in the controller. When the HP

HEATER-1 level comes above the set point, controller will open LCV-906 to maintain the level.


21) HP HEATER-1 DRAIN TO HP FLASH TANK CONTROL (LCV-

906A): This control loop is used to control the HP HEATER-1 level. The level transmitter (LT-906) senses the HP HEATER-1 level is given as

process variable to level controller. The process variable signal is compared with the operator feed manual set point in the controller.

When the HP HEATER-1 level comes above the set point, controller will open LCV-906A to maintain the level.


22) LUBE OIL OVER PRESSURE CONTROL (PRV-910): This control loop is used to control LUBE OIL OVER PRESSURE. This

pressure transmitter (PT-128) Senses LUBE OIL HEADER PRESSURE and consider as a process variable to pressure controller. The process

variable signal is compared with the operated feed manual set point in the controller. When the LUBE OIL HEADER PRESSURE comes above

the set point, controller will open PRV-910 to maintain the pressure.

Refer Closed Loop Logic Diagram: 1104-02-2820-23


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Turbine Trips from DCS to ETS:

All turbine trips are derived in ETS logics some important trips related to process derived in DCS and turbine trip

command shall issued to ETS PLC to trip turbine, the conditions are:

1. LP HEATER-1 LEVEL HI HI(LT-904)-95%

2. METAL TEMPERATURE OF BEARING-1(TE-114A)-100DEG. 3. METAL TEMPERATURE OF BEARING-1(TE-114B)-100DEG.

4. WORKING PAD TEMPERATURE OF TRUST BEARING (TE-100)-100DEG.



7. WORKING PAD TEMPERATURE OF TRUST BEARING (TE-

103)-100DEG. 8. WORKING PAD TEMPERATURE OF TRUST BEARING (TE-






109)-100DEG. 14. RETURN OIL TEMPERATURE OF LOCATING PAD (TE-110)-

100DEG.

15. METAL TEMPERATURE OF BEARING-2(TE-115)-100DEG. 16. WORKING PAD TEMPERATURE OF TRUST BEARING (TE-


113)-100DEG. 18. METAL TEMPERATURE OF BEARING-3(TE-116A)-100DEG.

19. METAL TEMPERATURE OF BEARING-3(TE-116B)-100DEG. 20. EGERGENCY PUSH BUTTON 1&2 OPERATED FROM

CONSOLE. 21. TURBINE INLET TEMPERATURE HIGH.

22. TURBINE INLET PRESSURE HIGH.


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TURBINE ALARMS (SOE) in DCS:

1. EH OIL PRESSURE LOW. 2. LUBE OIL PRESSURE LOW.

3. VACUUM LOW. 4. TRUST POSITION TRIP.

5. TSI OVER SPEED. 6. BEARING VIBRATION TRIP.

7. SHAFT VIBRATION TRIP. 8. GENERATOR FAULT TRIP.

9. HP EXHAUST STEAM TEMPERATURE HIGH. 10. MANAUL TRIP.

11. ON LINE TEST. 12. DEH POWER LOST.

13. DIFFRENTIAL EXPANSION TRIP. 14. MFT TRIP.

15. ASP-1.

16. ASP-2 17. OPC DISABLE.

18. DEH OVER SPEED. 19. ETS TURBINE TRIPPED-1.

20. ETS TURBINE TRIPPED-2. 21. ETS TURBINE TRIPPED-3.



26. ETS TURBINE TRIPPED-8. 27. 220 VDC-A ALARM FROM ETS.

28. 220 VAC-A ALARM FROM ETS. 29. 220 VAC-B ALARM FROM ETS.

30. 24V DC-A ALARM FROM ETS.

31. 24V DC-B ALARM FROM ETS.


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OPEN LOOPS:

1. QCNRV TO COLD RE HEATER TO HEADER: This QCNRV shall be open or close manually from DCS.

2. QCNRV TO HP HEATER-2: This QCNRV shall be open or close manually from DCS.



5. QCNRV TO DEAERATOR: This QCNRV shall be open or close manually from DCS.

6. QCNRV TO LP HEATER-3: This QCNRV shall be open or close manually from DCS.

7. QCNRV TO LP HEATER-2: This QCNRV shall be open or close manually from DCS.


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8) PERFORMANCE CALCULATION

Turbine Heat Rate =Q1 (h1-h2) + Q2 (h3-h4) P

Q1= Main Steam Inlet Flow-TPH Q2= Reheat Steam Inlet Flow-TPH

h1= Enthalpy of Main Steam Inlet kj/kg h2= Enthalpy of Feed Water at Inlet of Economizer-kj/kg

h3= Enthalpy of Hot Reheat Inlet-kj/kg h4= Enthalpy of Cold Reheat Steam-kj/kg

P = Output Power of Generator-KW Turbine heat rate-in kj/kw hr

For Q1=Flow of Main Steam Flow Nozzle (FE 902 + FE 904)

Q2=Flow of Hot Reheat Steam Flow Nozzle (FE 906 + FE 908)

h1=Main Steam Enthalpy Considering Temperature &

Pressure (PT-921, PT-922 & TE-901A, TE-902A) h2=Feed Water Enthalpy Considering Pressure &

Temperature (PT-973 & TE-973) h3=Hot Reheat Steam Enthalpy Considering Pressure &

Temperature (PT-905, PT-906 & TE-907, TE-908) h4=Cold Reheat Steam Enthalpy Considering Pressure &

Temperature (PT-905, PT-906 & TE-905, TE-906)

Specific Steam Consumption = Main Steam Flow / MW.


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EMERGENCY TRIP SYSTEM (ETS) and Automatic

Turbine tester:

Turbine tripping has been derived in ETS panel through

independent two PLCs all critical signals are connected to each PLC in ETS panel to trip Turbine immediately when any abnormal conditions

are happened and further it has been derived for any fault to display in

DCS as SOE inputs and as well as annunciation which provide in ETS panel.

1.There are three levels of voltages are provided for channel-1 and channel-2,230V AC,220V DC and 24V DC the healthiness of these

voltages will be monitored on ETS panel. 2. The following signals are connected to ETS panel and then it has

been connected to each PLC from field.

1. EH OIL PRESSURE LOW 63/LP-1 2. EH OIL PRESSURE LOW 63/LP-3 3. LUBE PRESSURE LOW 63/LBO-1 4. LUBE PRESSURE LOW 63/LBO-3 5. VACUUM LOW 63/LV1 6. VACUUM LOW 63/LV3 7. GENERATOR FAULT TRIP12TWO CHANNELS 8. HP EXHAUST STEAM TEMPERATURE HIGH 12TWO CHANNELS 9. ASP-1 10. EH OIL PRESSURE LOW 63/LP-2 11. EH OIL PRESSURE LOW 63/LP-4 12. LUBE PRESSURE LOW 63/-2 13. LUBE PRESSURE LOW 63/-4 14. VACUUM LOW 63/LV2 15. VACUUM LOW 63/LV4 16. ASP-2 THE FOLLOWING SIGNALS WERE DERIVED FROM TSI PANEL.

1. THRUST POSITION TRIP12TWO CHANNELS 2. TSI OVERSPEED TRIP12TWO CHANNELS


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3. BEARING VIBRATION TRIP12TWO CHANNELS 4. SHAFT VIBRATION TRIP12TWO CHANNELS 5. DIFFERENTIAL EXPENSION TRIP 12TWO CHANNELS

THE FOLLOWING SIGNALS WERE DERIVED FROM DEH PANEL. 1. DEH POWER SUPPLY LOST TRIP 12TWO CHANNELS 2. DEH OVERSPEED TRIP 12TWO CHANNELS

THE FOLLOWING SIGNALS WERE DERIVED FROM MANUAL PANEL MOUNTED IN ETS PANEL.

1. AST1 2. AST2 3. AST3 4. AST4 5. MANUAL TRIP

THE FOLLOWING SIGNALS ARE DERIVED FROM DCS 1. MANUAL TRIP NOTENOTENOTENOTE: RESET OF TRIPPINGS CAN BE DONE FROM MANUAL PANEL OR FROM DCS. FOLLOWING ARE THE ON LINE TEST WHICH CAN BE PREFORMED FROM ETS PANEL

1. ON LINE TEST-TO TEST THE OPERATION OF SOLENOIDE VALVES IN ON LINE.

2. LAMP TEST-TO TEST LAMPS GLOWING ON ETS PANEL. AUTOMATIC TURBINE TEAUTOMATIC TURBINE TEAUTOMATIC TURBINE TEAUTOMATIC TURBINE TESTERSTERSTERSTER:::: 1. LPTLPTLPTLPT----1111(CH(CH(CH(CH----1)OR LPT1)OR LPT1)OR LPT1)OR LPT----2(C2(C2(C2(CHHHH----2)2)2)2)----EH OILEH OILEH OILEH OIL TEST:-TEST BLOCK OF EH

OIL PRESSURE:DURING NORMAL RUNNING CONDITION ANY MAIN OIL PUMP(HP1 OR HP2)WILL BE IN RUNNING CONDITION AND IF THE DISCHARGE PRESSURE IS LOW TURBINE WILL TRIP WITH REFRENCE OF PRESSURE SWITCHS(LP63-1&LP63-3 CONNECTED TO PLC1 AND LP63-2&LP63-4 CONNECTED TO PLC-

turbine logics and interlocks

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