CEPSI2016BANGKOK

23-27October2016TURBINEDRIVENBOILERFEEDPUMP

WORKOPTIMIZETIONPresentedBy

TUANGSITPRAJAKSABTechnicianLevel4.TurbineMaintenanceDepartmentBangpakongPowerplant

ELECTRICITYGENERATINGAOTHORITYOFTHAILAND.

1

2

CONTENT

1.OVERVIEW2.INTRODUCTION3.METHOD4.RESULT5.CONCLUSION

PAGE

3

4-6

7-13

14 - 15 16

1.OVERVIEW

3

Thermal1,2

Thermal3,4

CombinedCycle3,4

CombinedCycle5

1,100MW

Total=3,729MW

Thermal1=550MW

1,200MW

720MW

709MW

2.INTRODUCTION

4

8,000Hrs.

16,000Hrs.

24,000Hrs.

32,000Hrs.

40,000Hrs.

48,000Hrs.

MinorInspec\on.

MajorOverhaulInspec\on.

Hours.Event.

2.INTRODUCTION

5

0 5 10 15 20 25 30

AUXILIARY.

ELECTRO-HYDRAULICCONTROL.

TURBINEDRIVENBOILERFEEDPUMP

DAYS.

LONGESTWORKOFTURBINEMAINTENANCE

2.INTRODUCTION

6

-TD-BFPisatypeofpumpusedinapowerplantsteamturbineforthetrapoutofthepumpwhichdrivestheuseofsteamwillsaveenergytodrivethepumpsignificantly.ThepumphasincreasedthewaterpressureinthewatersystemfromlowpressuretohighpressurebeforeenteringtheHPfeedwaterheater6,7,8andintotheboiler.

3.METHOD

7

ParameterforMakingDecision

MaintenanceData

OperaUngData

VibraUonData Criteria

-MaintenancePlanedOutageData-PM,CMData

-OverAllVibraUonPMData-VibraUonAnalysisData

GoodLimit=0-2.9mm/s

AdmissibleLimit=2.9-7.3mm/sSUllAdmissible=7.3-18.7mm/s

-EventRecord-BackLog-Alarm&TripData

NewWorkScope

Result

DuraUonReducUon

DownUmeCostReducUon

SparePartsCostReducUon

ManHourCostReducUon

1 2 3 4

3.METHODListofTD-BFPAcUvity/Date 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

BearingNo.1

BearingNo.2

ThrustBearing

BearingMainPump&ReducingGear

BearingBoosterPump&ReducingGear

HPStopValve

HPGoverningValve

LPStopValve

LPGoverningValve

OilCollecUngTank

BoosterPump&LubeOilCooler

LPStopValveActuator

LPGoverningValveActuator

8

1 MaintenanceData

3.METHOD

9

WEDIDNOTFINDANYSERIOUSSIGNDURINGOPERATION

2 OperatingData

3.METHOD

10

12

0

0.5

1

1.5

2

2.5

Vibration

.

Date.

TURBINEDRIVEN

1A

1H

1V

2A

2H

2V

Criteria

GoodLimit 0–2.9mm/s

AdmissibleLimit 2.9–7.3mm/s

S\llAdmissible 7.3–18.7mm/s3

4

VibrationData

2.1or2.2

3.METHOD

11

0

0.5

1

1.5

2

2.5

3

3.5

4

Vibration

.

Date.

MAINPUMP

3A

3H

3V

4A

4H

4V

4 3

Criteria

GoodLimit 0–2.9mm/s

AdmissibleLimit 2.9–7.3mm/s

S\llAdmissible 7.3–18.7mm/s

3

4

VibrationData

3.7or3.8

3.METHOD

12

00.51

1.52

2.53

3.54

4.55

5.5

Vibration

.

Date.

REDUCINGGEAR

5A

5H

5V

6A

6H

6V

7A

7H

7V

8A

8H

8V

56

78

Criteria

GoodLimit 0–2.9mm/s

AdmissibleLimit 2.9–7.3mm/s

S\llAdmissible 7.3–18.7mm/s3

4

VibrationData

5.0

3.METHOD

13

0

0.5

1

1.5

2

2.5

3

3.5

4

Vibration

.

Date.

BOOSTERPUMP

9A

9H

9V

10A

10H

10V

910

Criteria

GoodLimit 0–2.9mm/s

AdmissibleLimit 2.9–7.3mm/s

S\llAdmissible 7.3–18.7mm/s3

4

VibrationData

3.5

4.RESULTListofTD-BFPAcUvity/Date

1 2 3 4 5 6 7 8 9 10111213141516171819202122

BearingNo.1

BearingNo.2

ThrustBearing

BearingMainPump&ReducingGear

BearingBoosterPump&ReducingGear

HPStopValve

HPGoverningValve

LPStopValve

LPGoverningValve

OilCollecUngTank

BoosterPump&LubeOilCooler

LPStopValveActuator

LPGoverningValveActuator

14

ListofTD-BFPAcUvity/Date

1 2 3 4 5 6 7 8 9 10111213141516171819202122

BearingNo.1

BearingNo.2

ThrustBearing

BearingMainPump&ReducingGear

BearingBoosterPump&ReducingGear

HPStopValve

HPGoverningValve

LPStopValve

LPGoverningValve

OilCollecUngTank

BoosterPump&LubeOilCooler

LPStopValveActuator

LPGoverningValveActuator

Comparison

4.RESULTListofTD-BFPAcUvity/Date 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

HPStopValve

HPGoverningValve

LPStopValve

LPGoverningValve

OilCollecUngTank

BoosterPump&LubeOilCooler

LPStopValveActuator

LPGoverningValveActuator

15

REDUCETIME=10Days.REDUCEWORK=5Jobs.

COSTSAVED=6,327,720Baht.

ManHourCost=1,037,850Baht.

SparePartsCost=1,289,870Baht.

Availability=4,000,000Baht.

5.CONCLUSION

16

-Reducetheamountoftimethatcorrespondstothedayreductionpolicies.

GovernoroftheElectricityGeneratingAuthority

ofThailand.

17