This document provides information about gas turbine maintenance. It discusses inspection intervals for combustion, hot gas path, and major inspections. The inspections examine components like fuel nozzles, combustion liners, cross fire tubes, and more. Hot gas path inspections are more frequent than combustion inspections. Major inspections occur every 40,000-50,000 hours and examine additional components like inlet guide vanes, rotor blades, bearings, and the generator. Photos show component wear and repairs conducted during inspections.

1. GASTURBINEGASTURBINE
(MS(MS--5001)5001)

2. PersonalPersonal DataData
 NameName :: M. Sigit IsnaeniM. Sigit Isnaeni
 AgeAge : 35 Years: 35 Years AgeAge : 35 Years: 35 Years
 Work ExperienceWork Experience :: 12 Years12 Years

3. GASTURBINEGASTURBINE
2
3
1
4 5 6
1. ENGINE STARTING
2. ACC. GEAR
3. INLET PLENUM
4. STATOR & ROTOR
5. COMBUSTOR
6. EXHAUST COMP.

4. STARTING ENGINESTARTING ENGINE
 DIESEL ENGINEDIESEL ENGINE
 GAS EXPANDERGAS EXPANDER GAS EXPANDERGAS EXPANDER
 STEAM TURBINESTEAM TURBINE
 MOTORMOTOR

5. Gas Turbine MaintenanceGas Turbine Maintenance
 Combustion InspectionCombustion Inspection
 Hot Gas Path InspectionHot Gas Path Inspection
 Major InspectionMajor Inspection

6. Inspection IntervalInspection Interval
Combustion Inspection (CI)Combustion Inspection (CI)
8.000 RH8.000 RH –– 10.000 RH10.000 RH
Hot Gas Path Inspection (HGPI)Hot Gas Path Inspection (HGPI)
20.000 RH20.000 RH -- 25.000 RH25.000 RH
Major Inspection (MI)Major Inspection (MI)
40.00040.000 –– 50.000 RH50.000 RH

7. Combustion InspectionCombustion Inspection
 Fuel nozzleFuel nozzle
 Combustion linerCombustion liner
Cross fire tubeCross fire tube Cross fire tubeCross fire tube
 RetainerRetainer
 Flame detectorFlame detector
 Spark PlugSpark Plug

8. COMBUSTORCOMBUSTOR
RETAINER COMB. LINER CROSS FIRE TUBE

9. CROSS FIRE TUBECROSS FIRE TUBE
CROSS FIRE TUBE (HOT SPOT) CROSS FIRE TUBE (WEAR)

10. CROSS FIRE TUBECROSS FIRE TUBE

11. CROSS FIRE TUBECROSS FIRE TUBE
INSPECTION TO INSPECTION
30 JUNI 2006 – 22 OKTOBER 2009 ( ± 29.000 RH)

12. CROSS FIRE TUBECROSS FIRE TUBE
CROSS FIRE TUBE (EX USE) CROSS FIRE TUBE (NEW)

13. FUEL NOZZLEFUEL NOZZLE
TEREROSI

14. FUEL NOZZLE (DUAL FUEL)FUEL NOZZLE (DUAL FUEL)
MSMS--50015001--PAPA

15. COMBUSTION LINERCOMBUSTION LINER

16. FUEL NOZZLE COLLARFUEL NOZZLE COLLAR
(WEAR)(WEAR)
WEAR

17. CROSS FIRE TUBE COLLARCROSS FIRE TUBE COLLAR
(WEAR)(WEAR)
WEARWEAR

18. COMBUSTION LINER SPRING SEALCOMBUSTION LINER SPRING SEAL
(WEAR)(WEAR)

19. COMBUSTION LINER SPRING SEALCOMBUSTION LINER SPRING SEAL
(HEAVY WEAR)(HEAVY WEAR)

20. COMBUSTION LINERCOMBUSTION LINER
(COATING)(COATING)

21. CROSS FIRE TUBE RETAINERCROSS FIRE TUBE RETAINER

22. Hot Gas Path InspectionHot Gas Path Inspection
 Fuel nozzle
 Combustion liner
 Cross fire tube
 Retainer
 Second stage nozzle
 First stage bucket
 Second stage bucket
 Suppport ring Retainer
 Flame detector
 Spark plug
 Transition piece
 First stage nozzle
 Suppport ring
 Diaphragm
 First stage shroud
 Second stage shroud

23. First stage nozzleFirst stage nozzle

24. FIRST STAGE NOZZLEFIRST STAGE NOZZLE
(CRACK)(CRACK)
CRACK

25. 22NDND STAGE NOZZLESTAGE NOZZLE
(CRACK)(CRACK)

26. 22NDND STAGE NOZZLESTAGE NOZZLE
(CRACK)(CRACK)

27. TransitionTransition PPieceiece

28. TRANSITION PIECETRANSITION PIECE
(COATING DAMAGE)(COATING DAMAGE)

29. FIRSTFIRST STAGE BUCKETSTAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
FOD

30. SECOND STAGE BUCKETSECOND STAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
FOD

31. MAJORMAJOR IINSPECTIONNSPECTION
 Fuel nozzle
 Combustion liner
 Cross fire tube
 Retainer
 Flame detector
 Second stage bucket
 Suppport ring
 Diaphragm
 First stage shroud
 Second stage shroud Flame detector
 Spark plug
 Transition piece
 First stage nozzle
 Second stage nozzle
 First stage bucket
 Second stage shroud
 Rotor Blade Compressor
 Stator Blade Compressor
 Inlet GuideVane
 No.1 & No.2 Bearing
 Oil Deflector

32. IINLET GUIDE VANE 1NLET GUIDE VANE 1

33. IINLET GUIDE VANE 2NLET GUIDE VANE 2

34. IINLET GUIDE VANE 3NLET GUIDE VANE 3

35. IINLET GUIDE VANE 4NLET GUIDE VANE 4

36. IINLET GUIDE VANE 5NLET GUIDE VANE 5

37. IINLET GUIDE VANE 6NLET GUIDE VANE 6

38. BBEARING NO.1EARING NO.1
WEARWEAR

39. BBEARING NO.2EARING NO.2
WEARWEAR

40. THRUST BEARINGTHRUST BEARING

41. THRUST BEARING (ACTIVE)THRUST BEARING (ACTIVE)

42. THRUST BEARING (THRUST BEARING (ININACTIVE)ACTIVE)

43. OOIL DEFLECTORIL DEFLECTOR NONO.2.2

44. OOIL DEFLECTORIL DEFLECTOR NONO.2.2

45. OOIL DEFLECTORIL DEFLECTOR
SEALING AIR HOLE

46. RROTOROTOR (load coupling side)(load coupling side)

47. TURBINE BUCKETTURBINE BUCKET
(MS(MS--50015001--P)P)

48. FIRST STAGE BUCKETFIRST STAGE BUCKET
(REBUCKETING(REBUCKETING ))

49. SUPPORT RINGSUPPORT RING
(DISASSEMBLE 1)(DISASSEMBLE 1)
HEATING TORCHHEATING TORCH

50. SUPPORT RINGSUPPORT RING
(DISASSEMBLE(DISASSEMBLE 22))

51. ROTORROTOR
(DI(DISSASSEMBLE 1)ASSEMBLE 1)
MI 1B 2014

52. ROTORROTOR
(DI(DISSASSEMBLEASSEMBLE 22))
MI 1B 2014

53. ROTORROTOR
(DI(DISSASSEMBLEASSEMBLE 33))

54. ROTORROTOR
(DI(DISSASSEMBLEASSEMBLE 44))

55. AusAus akibatakibat FSNLFSNL
Aus

56. FIRSTFIRST STAGE BUCKETSTAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
RUBBING (BUCKET N0.1 – 120)

57. FIRSTFIRST STAGE BUCKETSTAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
MISSING
METAL
MI 1B 2014

58. FIRSTFIRST STAGE BUCKETSTAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
MISSING
METAL
MI 1B 2014

59. FIRSTFIRST STAGE BUCKETSTAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
CRACK

60. FIRSTFIRST STAGE BUCKETSTAGE BUCKET
(FOD(FOD = FOREIGN OBJECT DAMAGE= FOREIGN OBJECT DAMAGE))
MISSING
METAL

61. NEW FIRSTNEW FIRST STAGE BUCKETSTAGE BUCKET

62. ROTORROTOR

63. ROTORROTOR

64. ROTORROTOR

65. ROTORROTOR

66. ROTORROTOR

67. NEWNEW ROTORROTOR
(ASSEMBL(ASSEMBLEE 11))

68. NEWNEW ROTORROTOR
(ASSEMBL(ASSEMBLEE 22))

69. NEWNEW ROTORROTOR
(ASSEMBL(ASSEMBLEE 33))

70. NEWNEW ROTORROTOR
(ASSEMBL(ASSEMBLEE 44))

71. AIR COOLING CIRCULATIONAIR COOLING CIRCULATION
ACC GEAR
COMP.
TURBIN
COMP.
EXHAUST
COMP.
LOAD GEAR
COMP.

72. AIR COOLING CIRCULATIONAIR COOLING CIRCULATION
((REDUCTION GEARREDUCTION GEAR))

73. GAS TURBINE GENERATOR
OVERVIEW
BRG NO.1
BRG NO.2 HS BRGHS BRGT
U
LS BRGLS BRG GEN BRG
ACTIVE
THRUST BRG
INACTIVE
THRUST BRG
COMPRESSOR
U
R
B
I
N
E
HS GEAR
LS GEAR
GENERATORQUILL SHAFT
QS BRG

74. INLET SILENCERINLET SILENCER

75. INLET SILENCERINLET SILENCER

76. PEDESTAL BEARING GENERATORPEDESTAL BEARING GENERATOR
TA 2006TA 2006

77. Gear pump (main lube oil pump)Gear pump (main lube oil pump)

78. Gear pump (main lube oil pump)Gear pump (main lube oil pump)

79. Bearing (main lube oil pump)Bearing (main lube oil pump)

80. Bearing (main lube oil pump)Bearing (main lube oil pump)

81. QuillQuill SShafthaft

82. Support/screw jack forSupport/screw jack for
generator rotorgenerator rotor

83. SRV & GCVSRV & GCV

84. SRV/GCV SPRINGSRV/GCV SPRING

85. SRV & GCVSRV & GCV
(SEAT & DISK VALVE)(SEAT & DISK VALVE)

86. OVER SPEED TRIP (OST)OVER SPEED TRIP (OST)
Elec = 5610 ± 30 RPM
Mech = 5687 - 5789 RPMMech = 5687 - 5789 RPM
Max Pick Up Gap = 1.27 ± 0.13 MM
Max Search Speed = 5800 RPM

87. VIBRATIONVIBRATION
Trip = 25.4 mm/s (1 Inch/Second )
Sensor Vibration LocationSensor Vibration Location
1. Bearing No.1
2. Bearing No.2
3. Generator

88. VIBRATIONVIBRATION

89. EXHAUST TEMPERATUREEXHAUST TEMPERATURE

90. EXHAUST TEMPERATUREEXHAUST TEMPERATURE

91. COMPRESSOR BLADE VALVECOMPRESSOR BLADE VALVE
From 10th to 14th stage operation
automatic close at or above 80% speed

92. ROTOR TURNING DEVICEROTOR TURNING DEVICE
Type = Hydraulic Rachet
(Pump Motor Driven)(Pump Motor Driven)
Cylinder Size = 63.5 MM
Rating = 5.68 LPM at 105.5 Kg/cm2

93. LUBE OIL SYSTEMLUBE OIL SYSTEM
Type = Gear
Rating = 1740 LPM at 4.76 Kg/cm2Rating = 1740 LPM at 4.76 Kg/cm2
Driven By = Accesory Gear
Speed = 1432 RPM

94. EMERGENCY/COOL DOWNEMERGENCY/COOL DOWN
L.O PUMPL.O PUMP
Type = Centrifugal
Rating = 795 LPM at 1.41 Kg/cm2
Driven By = 7.5 HP 380 VAC Motor
Speed = 3000 RPM

95. HYDRAULIC SYSTEMHYDRAULIC SYSTEM
Type = Positif Displacement
Axial Piston
Rating = 62.5 LPM at 84.5 Kg/cm2Rating = 62.5 LPM at 84.5 Kg/cm2
Driven By = Accesory Gear
Speed = 1300 RPM
Setting = 89.5 ± 3.5 Kg/cm2
Press. Control = Press. Compensator

96. PROTECTION SYSTEMPROTECTION SYSTEM
Exhaust Plenum
Alarm = 5350 CAlarm = 5350 C
Trip = 5460 C
Diff. Alarm Setting = 190 C

97. SET VALUE SYSTEMSET VALUE SYSTEM
PRESSURE (Kg/cm2)

98. SET VALUE SYSTEMSET VALUE SYSTEM
TEMPERATURE (OC)

99. SET VALUE SYSTEMSET VALUE SYSTEM
LEVEL (MM)