SHINKO TURBINE

OPERATION
&
MAINTENANCE
 STEAM FLOW DIAGRAM
DRAIN SEPARATOR HIGH PRESSURE STEAM

EXPANSION JOINT

STRAINER

DRAIN
GOVERNOR VALVE

GOV.V.CASING
GOVERNOR
STEAM SENTINEL VALVE
CHEST
TO ATMOS
TRIP DEVICE

REDUCTION
STEAM TURBINE GEAR
TRIP DEVICE
TURBINE CASING DRAIN

EXPANSION
JOINT EXHAUST STEAM

TO ATMOS
OIL FLOW DIAGRAM
OF STEAM TURBINE
 PRIM LO PUMP LOW LO
START & STOP PRESS.TRIP
ELECTRIC SOURCE
PG PG PG

TURBINE
CONTROL
PANEL

PRESSURE
REGULATING VALVE
TRIP
GOVERNOR SERVO MOTOR
VALVE

OIL FILTER w
JIS 5K
32A F.F
TG
TG GOVERNOR
C.W.OUTLET STEAM
CHEST M

OIL COOLER
S
C.W.INLET
TRIP
TG TG DEVICE
STEAM TURBINE REDUCTION LS
TG GEAR LS
TG
SHAFT
TG TG
END
DRIVEN

M
MAIN LO
COOLER
PRIM LO
PUMP
LUBE OIL RESERVOIR
LG
( BUILT IN COMMON BED )
TURBINE - CONSTRUCTION
 TURBINE - CONSTRUCTION

 THE MODEL RB STEAM TURBINE IS A

HORIZONTAL CURTIS SINGLE STAGE WITH
REDUCTION GEAR UNIT.
 ITS CONSTRUCTION IS SIMPLE,STRONG AND
COMPACT AND THE SAFETY DEVICE AND THE
GOVERNING DEVICE ARE COMPOSED OF SIMPLE
MECHANISM.
 TURBINE - CONSTRUCTION

 THE EXHAUST CASING IS

SOLID CONTRUCTION TO
LEAD STEAM FLOW
SMOOTHLY TO THE
EXHAUST STEAM PIPING
FOR SAVING STEAM
CONSUMPTION.
 TURBINE - CONSTRUCTION

 ROTOR DISC IS PROVIDED ON

THE PINION SHAFT END BY
SHRINKAGE FIT.
 THE PINION AND SHAFT ARE
SOLID CONSTRUCTIONAND
TEETH FACES ARE GRINDED
OF SHAVED IN ORDER TO
OPERATE IN GOOD
EFFICIENCY AND SILENTLY.
 THE OUTER CIRCUMFERENCE
OF ROTOR IS PROVIDED WITH
BLADES IN TWO ROWS AND
SHROUD RINGS ARE
PROVIDED ON THE BLADES
TO PREVENT STEAM
LEAKAGE.
 TURBINE - CONSTRUCTION

 GOVERNOR VALVE IS
DOUBLE SEAT TYPE
TO PREVENT
UNBALANCE BY THE
EFFECT OF STEAM
PRESSURE AND ALSO
ACTS AS AN
EMERGENCY STOP
VALVE SO THAT THIS
VALVE CLOSSES TO
STOP THE TURBINE
WHEN EMERGENCY
TRIP DEVICES WORK.
 TURBINE - CONSTRUCTION

 TURBINE GLAND IS
PROVIDED WITH
LABYRINTH PACKING.
 IN CASE THE
EXHAUST STEAM
SUPPLIED TO
PROCESS, AN EJECTOR
DRIVEN BY A PART OF
EXHAUST STEAM
ACTUATES AND
PREVENT STEAM
LEAKAGE FROM
GLAND.
TURBINE - CONSTRUCTION

 IN CONSIDERATION OF
ECONOMICAL TURBINE
OPERATION, A HAND
VALVE IS PROVIDED AND
ITS FULLY OPENED
DURING GENERATOR
OPERATION UNDER THE
RATED POINT AND
CLOSED UNDER 85-90% OF
LOAD TO PREVENT
TURBINE EFFICIENCY GO
DOWN.
 REFER TO FIG.C1101-MS 52
 TURBINE - CONSTRUCTION

 FOR SPEED REGULATING

GOVERNOR WOODWARD
UG TYPE IS ADOPTED AND
INSTALLED ON THE TOP
OF THE REDUCTION GEAR
CASING,DRIVEN BY BEVEL
GEAR AT MAIN L.O PUMP
SHAFT END.
 THE SPEED REGULATIONS
ARE AS FOLLOWS.
MOMENTARY ± 7 %
STEADY STATE ± 0.5 %
NAME CLASS D
TURBINE - CONSTRUCTION

 FOR THE PURPOSE OF

SAFE TURBINE
OPERATION,THE
FOLLOWING
EMERGENCY TRIPS
ARE PROVIDED.
 THEY ACTUAE
AUTOMATICALLY THE
GOVERNOR VALVE ,
WHICH IS DIRECTLY
CLOSED BY
LINGKAGE, THUS
TURBINE IS STOPPED.
 TURBINE - CONSTRUCTION

 FORCED LUBRICATION SYSTEM BY TURBINE DRIVEN L.O

PUMP IS ADOPTED.
 NAMELY,AFTER L.O PRESSURE IS ADJUSTED AT 1.0 –1.5
KG/CM²G BY ADJUSTING VALVE,THE L.O IS SUPPLIED TO
BEARING,REDUCTION GEAR AND ETC. THROUGH THE L.O
COOLER AND STRAINER .
 AND A PART OF L.O IS SENT TO SOLENOID VALVE,TRIP THE
SERVO-MOTOR AND ACTUATES AS CONTROL OIL FOR
VARIOUS EMERGENCY TRIP DEVICES.
 FOR THE SAFE OPERATION OF TURBINE A MOTOR DRIVEN
CENTRIFUGAL TYPE PRIMING L.O PUMP IS PROVIDED.
 UNLESS THE PRESSURE IN L.O LINE REACHES 0.2 –
0.3KG/CMG THE INTERLOCK ACT SO THAT THE TURBINE
DOES NOT START EVEN THOUGH THE MAIN STEAM VALVE
IS OPENED.
 TURBINE- BEFORE OPERATION

 CONFIRM IF THE GENERATOR

IS READY FOR STARTING.
 CHECK BY OPENING THE
DRAIN VALVE OR REMOVING
THE PLUG IF WATER IN THE
OIL TANK.
 WOODWARD GOVERNOR ,
THE L.O COOLER OR OIL
STRAINER.
 CHECK THE OIL LEVEL IN THE
OIL TANK AND THE
GOVERNOR.
 START THE PRIMING L.O
PUMP AND CONFIRM OIL
PRESSURE REACHES ABOVES
0.3 KG/CM.
 REFER TO FIG.3.1
 TURBINE - BEFORE OPERATION

 PASS COOLING WATER TO THE

L.O COOLER.
 CONFIRM ALL RELATING
EQUIPMENTS,SUCH AS
CONDENSOR COOLING
WATER PUMP,CONDENSATES
PUMPS AND ETC. ARE READY
READY FOR STARTING THE
TURBINES.
 OPENED FULLY THE DRAIN
VALVES ON THE DRAIN
SEPARATOR ,THE GOVERNOR
VALVE , THE EXHAUST
CASING AND THE PIPING AND
ALSO ON THE PIPINGS
BEFORE THE INLET STEAM
VALVE AND AFTER THE
EXHAUST VALVE.
 REFER TO FIG.3.1
 TURBINE –BEFORE OPERATION
 OPEN THE EXHAUST VALVE
FULLY
 TURN THE TURBINE
TOGETHER WITH THE
GENERATOR SEVERAL
REVOLUTIONS BY THE
TURNING BAR TO CONFIRM
SMOOTH TURNING.
 SET ALL STRIPS ON RESET
CONDITION BY THE REET
KNOB ON THE TRIP
CASING.REFER TO FIG. 3.2
 SET THE GOVERNOR AT THE
MINIMUM SPEED BY
TURNING THE ADJUSTING
KNOB COUNTERCLOCKWISE
AND FULLY.
 TURBINE –BEFORE OPERATION
 SUPPLY THE SEALING
STEAM TO THE TURBINE
GLAND AS FOLOWS : ( IN
CASE OF THE EXHAUST IS
VACUUM).OPEN THE
SEALING STEAM VALVE
GRADUALLY TILL THE
SEALING STEAM BEGINS
TO SLIGHTLY LEAK FROM
THE TURBINE GLAND
WHERE THE TURBINE
SHAFT PASSES THROUGH.
(THE SEALING STEAM
PRESSURE AS AN IDEA IS
0.1-0.5KG/CM²G).
 TURBINE -OPERATION
 OPEN THE INLET STEAM VALVE SLIGHTLY TO WARM-UP THE
TURBINE.PULL THE STARTING LEVER ON THE GOVERNOR TO
OPEN THE GOVERNOR VALVE TO SUPPLY A JUST SUFFICIENT
STEAM TO THE TURBINE FOR ITS WARM-UP,NOT SO MUCH STEAM
AS TO START THE TURBINE.UNLESS PULLING THE STARTING
LEVER THE GOVERNOR DOES NOT FUNCTION AND THE
GOVERNOR VALVE REMAINS CLOSED.MOREOVER,UNLESSL.O.
PRESSURE IS ABOVE 0.3KG/CM²G BY OPERATING THE PRIMING
L.O. PUMP,THE L.O. INTERLOCK ACTS AND THE GOVERNOR
VALVE CAN NOT BE OPENED.
 TURBINE -OPERATION

 IF THE STEAM EJECTOR IS

FITTED,OPEN FULLY THE
EJECTOR DRIVING STEAM
VALVE FOR THE GLAND
LEAK STEAM AS SHOWN
IN FIG. 3.1.
 TURBINE -OPERATION
 STARTING
 OPEN THE INLET STEAM
VALVE GRADUALLY AND
START THE TURBINE.THEN
KEEP IT SPEED AT 100 TO
200RPM TO WARM-UP THE
TURBINE FOR 25 MINUTES.
 DURING THAT TIME CHECK IF
THERE IS NO ABNORMAL
NOISE OR VIBRATION IN THE
TURBINE,IN THE REDUCTION
GEAR AND IN THE
GENERATOR.IN CASE ANY
ABNORMAL STATE IS
FELT,STOP THE TURBINE
IMMEDIATELY AND TRACE
THE CAUSE.
 TURBINE -OPERATION

 CLOSE EACH DARIN VALVE

ON MAKING SURE THAT THE
DRAIN HAS BEEN
COMPLETELY DISCHARGED
FROM EACH PORTION.
 TRIP THE TURBINE BY
OPERATING THE HAND TRIP
KNOB TO CONFIRM THAT THE
GOVERNOR VALVE CLOSES
IMMEDIATELY.
 AFTER SUFFICIENT WARM-
UP,OPEN THE INLET STEAM
VALVE FURTHER AND
GRADUALLY AND RAISE THE
SPEED UP TO THE RATED
REVOLUTIONS IS ABOUT 5
MINUTES.
 TURBINE -OPERATION

 WHEN THE GOVERNOR IS

USED FOR THE FIRST
TIME,DRAW OUT AIR IN THE
GOVERNOR OIL BY OPENING
THE NEEDLE VALVE ON THE
GOVERNOR AND ADJUST THE
NEEDLE VALVE AS DESCRIBE
IN THE MANUAL OF
WOODWARD GOVERNOR.
 CONFIRM IF THE EMERGENCY
TRIP MECHANISM ACTUATES
SURELY ALWAYS AT THE TIME
OF STARTING.ALSO AT THE
FIRST OPERATION AFTER
INSPECTION OR LONG
STANDSTILL,CONFIRM THE
ACTUATION OF OVERSPEED
TRIP AT THE SPECIFIED
SPEED.
 TURBINE -OPERATION

 3.3 -OPERATION AT VARIOUS

SPEEDS.
 FOR REMOTE CONTROL IN
THE CONTROL
ROOM,OPERATE THE SPEED
CONTROL SWITCH.FOR SPEED
INCREASE,TURN THE SWITCH
CLOCKWISE AND VICE
VERSA.
 FOR LOCAL CONTROL FOR
SPEED DECREASE,TURN THE
MANUAL ADJUSTING KNOB
COUNTERCLOCKWISE, AND
VICE VERSA.
 TURBINE -OPERATION

 3.4-STOPPING
 DECREASE THE LOAD ON THE
TURBINE GRADUALLY.
 CLOSE THE INLET STEAM
VALVE.ALSO STOPPING IS
POSSIBLE WHEN THE
REMOTE STOP OR THE HAND
TRIP ON THE TURBINE IS
ACTUATED.
 WHEN SPEED DECREASES
AND OIL PRESSURE FALLS
BELOW 0.45KG/CM²G THE
PRIMING L.O. PUMP STARTS
AUTOMATICALLY,KEEPING
OIL PRESSURE ABOVE
0.3KG/CM²G.
 TURBINE -OPERATION

 STOP THE COOLING WATER

TO THE L.O. COOLER.
 WHEN THE TURBINE HAS
STOPPED,CLOSE THE
EXHAUST VALVE AND OPEN
ALL DRAIN VALVES ON THE
TURBINE TO DISCHARGE
DRAIN COMPLETELY.
 KEEP THE PRIMING L.O. PUMP
IS IN OPERATION FORMORE
THAN 5 MINUTES AFTER
STOPPING THE
TURBINE.AFTER STOPPING
THE PRIMING L.O.
PUMP,CONFIRM THAT THE
TURBINE BEARING
TEMPERATURE DOES NOT
RISE ABOVE 80ºC.
 TURBINE -OPERATION

 3.5 EMERGENCY STOPPING

 LOCAL STOPPING
PUSH THE HAND TRIP
KNOB PROVIDED ON THE
TRIP CASING ON THE
REDUCTION GEAR CASING
SO THAT THE SPINDLE
MOVES DOWNWARD AND
THE GOVERNOR VALVE
CLOSES THROUGH
ACTUATION OF THE TRIP
MECHANISM AND THE
TURBINE STOPS THE
STOPS AS SHOWN IN FIG.
3.2 AND 3.3.
 REMOTE CONTROL

 PUSH THE REMOTE

STOP SWITCH
PROVIDED IN THE
REMOTE CONTROL
ROOM SO THAT THE
TRIP MECHANISM
ACTUATES TO CLOSE
THE GOVERNOR VALVE
TO STOP THE TURBINE
AS SHOWN IN FIG. 3.2
AND 3.3
 MAINTENANCE CHECKLIST FOR DURING
OPERATION
ITEM INSPECTION PROCEDURE REMEDY IN CASE OF
TROUBLE
INLET STEAM KEEP CONSTANT AS MUCH
PRESSURE AND AS POSSIBLE AND RECORD
TEMPERATURE PERIODICALLY
BEFORE
GOVERNOR
VALVE
L.O. PRESSURE CHECK EVERYDAY. REFER TO TROUBLE
KEEP BETWEEN 1 AND SHOOTING & REMEDIES
1.5KG/CM2G AND RECORD
PERIODICALLY
L.O. CHECK EVERYDAY. ADJUST COOLING WATER
TEMPERATURE KEEP BETWEEN 20 AND 45C FLOW TO L.O. COOLER
AT L.O COOLER AND RECORD BY ITS DISCHARGE
OUTLET PERIODICALLY VALVE.
REFER TO TROUBLE
SHOOTING & REMEDIES
 MAINTENANCE CHECKLIST FOR
DURING OPERATION
DRAIN IN STEAM IN CHECK EVERYDAY DISCHARGE DRAIN
TO TURBINE PERIODICALLY BY
OPENING DRAIN
VALVE ON DRAIN
SEPARATOR AND
PIPING
VIBRATION ON NOISE CHECK EVERYDAY REFER TO TROUBLE
SHOOTING &
REMEDIES

OIL STRAINER TURN IT HANDLE

SEVERAL TIME ONCE
A WEEK TO CLEAN
FILTER PLATE
AIR IN L.O. COOLER DRAW OUT BY VENT
AND STRAINER VALVE OR PLUG
 MAINTENANCE CHECKLIST FOR
DURING OPERATION
OIL LEVEL IN OIL CHECK ONCE A WEEK SUPPLY OIL
TANK AND BY OIL LEVEL GAUGE REFER TO
GOVERNOR FOR OIL TANK AND “LUBRICANTS”
BY SIGHT GLASS FOR
GOVERNOR
INLET STEAM CHECK EVERYDAY
PRESSURE AND AND RECORD
TEMPERATURE IN PERIODICALLY
TURBINE AND
EXHAUST STEAM
PRESSURE OR
VACUUM
PRIMING L.O. PUMP KEEP ITS SWITCH IN
AUTOMATIC
OPERATION ALWAYS
 MAINTENANCE CHECKLIST FOR DURING OPERATION
ALL TRIP DEVICES CONFIRM ONCE A YEAR
THAT THEY ACTUATE
SURELY AND
SMOOTHLY
STEAM LEAKAGE CHECK EVERYDAY REFER TO “ TROUBLE
FROM TURBINE SHOOTING &
GLAND REMEDIES”

BEARING CHECK EVERYDAY AND REFER TO “ TROUBLE

TEMPERATURE RECORD PERIODICALLY SHOOTING &
REMEDIES”

CORROSION CORROSION
PROTECTIVE PIECE PROTECTIVE PIECE (IF
ON L.O. COOLER FITTED,THE PIECE IS
SHOWN IN THE SPARE
LIST AS ITS SPARE) IS TO
BE CHECKED EVERY 3
MONTHS AND
REPLACED IF ANY
 4.2-ADJUSTMENT FOR ACCESSORIES & EMERGENCY TRIP
 AS ALL PARTS OF THE TURBINE HAVE BEEN ADJUSTED AT
THE SHOP TRIAL, IT IS IMPORTANT TO AVOID
UNNECESSARY READJUSTMENT. HOWEVER, IF
READJUSTMENT IS REQUIRED PROCEED AS FOLLOWS:
 SPEED GOVERNOR (WOODWARD GOVERNOR) REFER TO
THE SEPARATE INTRUCTION MANUAL OF WOODWARD
GOVERNOR. HOWEVER, THE ADJUSTMENT OF THE
INTERIOR IS VERY COMLICATED AND, THEREFORE, MUST
BE DO BY EXPERT. NEVER OPEN THE SEALED GOVERNOR
PART FOR THE ADJUSTMENT.
L.O PRESSURE ADJ.VALVE
 L.O PRESSURE ADJ.VALVE

 REMOVE THE PLUG AND TURN THE ADJUSTING SCREW

TO ADJUST LUBRICATING OIL PRESSURE BETWEEN 1.0
AND 1.5KG/CM²G. CLOCKWISE TURN OF THE
ADJUSTING SCREW INCREASES L.O. PRESSURE AND
VICE VERSA.
 SANTINEL VALVE

 REMOVE THE CAP AND TURN THE ADJUSTING SCREW

TO ADJUST THE VALVE ACTUATING PRESSURE
SPECIFIED IN THE DRAWING.CLOCKWISE TURN OF THE
ADJUSTING SCREW INCREASES THE VALVE ACTUATING
PRESSURE AND VICE VERSA.
SANTINEL VALVE
 ELECTRIC TACHOMETER

 TURN THE ADJUSTING SCREW INSIDE THE ADJUSTING

NUT AT THE BACK OF THE TACHOMETER TO ADJUST THE
READING. (REMOVE THE WATER-PROOF CASE IF FITTED)
CLOCKWISE TURN OF THE ADJUSTING SCREW
INCREASES THE READING AND VICE VERSA.

 THE TACHOMETER POINTER MUST BE AT ZERO POINT

WHEN THE TURBINE IS AT A STANDSTILL.OTHERWISE.
ADJUST BY MEANS OF THE ZERO POINT ADJUSTING
SCREW IN THE CENTER OF THE TACHOMETER FRONT.
ELECTRIC TACHOMETER
 MECHANICAL OVERSPEED TRIP

 REMOVE THE TRIP CASING ON THE REDUCTION GEAR CASING

AND REMOVE FROM THIS OPENING THE SPILTPIN FOR LOCKING
THE TRIP WEIGHT AND TRIP SPINDLE OF THE OVERSPEED TRIP.
THEN DRAW OUT THE TRIP SPINDLE AND SPRING FROM THE
TRIP WEIGHT BY SCREW DRIVER.
 THE ADJUSTING LINER IS PROVIDED AT THE BACK OF THE
SPRING IN ORDER TO CHANGE AS DESIRED ITS COMPRESSIVE
LOAD. BY CHANGING THE THICKNESS OF THIS LINER THE
OVERSPEED TRIP ACTUATING REVOLUTIONS CAN BE CHANGED.
EVERY INCREASE OF 0.5MM IN THICKNESS OF THIS LINER MEANS
ABOUT 65RPM RISE IN REVOLUTIONS OF THE OVERSPEED TRIP
AND VICE VERSA.REFER TO FIG. 4.3.
OVERSPEED
 PRESSURE SWITCH

 REMOVE THE COVER AND TURN THE ADJUSTING SCREW

CLOCKWISE TO DECREASE THE ACTUATING PRESSURE
AND VICE VERSA.

 FOR DIFFERENCIAL PRESSURE ADJUSTMENT,CLOCKWISE

TURN OF THE DIFFERENTIAL PRESSURE ADJUSTING
SCREW WIDENS PRESSURE DIFFERENCE AND VICE
VERSA.FIG 4.4
PRESSURE SWITCH
 MAINTENANCE CHECKLIST
 4.3.1 MAINTENANCE CHECK LIST FOR DURING LONG STAND STILL
MAINTENANCE AND CHECK FOR THE FOLLOWINGS CAN KEEP A GOOD CONDITION OF THE
TURBINE FOR OPERATION

ITEM PROCEDURE AND INSPECTION

COOLING WATER IN L.O COOLER DRAW OUT COMPLETELY

DRAIN IN INLET AND EXHAUST DRAW OUT COMPLETELY BY DRAIN VALVES OR

STEAM LINE,EXHAUST PLUGS AND CLOSE THEM AND ALSO INLET STEAM
CASING,STEAM VALVE AND EXHAUST VALVE COMPLETELY
CHEST,GOVERNOR VALVE AFTERWARD.
CASING,DRAIN SEPARATOR AND
DRAIN TRAP
MOISTURE APPLY MOISTURE PREVENTIVE ( SILICAGEL CTE )
IN INERT GAS INTO EXHAUST CASING.
WHEN USE SILICAGEL , PUT A NOTICE WARNING
SILICAL GEL IS IN EXHAUST CASING.
 MAINTENANCE CHECKLIST
ITEM PROCEDURE AND INSPECTION
WATER MIXED IN OIL OPEN DRAIN VALVES OR PULGS FOR IOIL
TANK,GOVERNOR,L.O COOLER AND OIL STRAINER
TO DRAW OUUT WATER COMPLETELY AND CLOSE
THEM AFTERWARD.
ALL MACHINED PARTS EXPOSED APPLY RUST PREVENTITIVE

WOODWARD GOVERNOR FILL GORVENOR WITH OIL UP TO TOP OF OIL

LEVEL GAUGE.

TURBINE TURBINE ONCE A WEEK GIVE 5 TURNS TO TURBINE WHILE

POPERATING PRIMING L.O PUMP.
IN RAINY SEASON DO THIS TURNING 2 OR 3 TIMES
A WEEK.
REDUCTION GEAR ONCE A MONTH OPEN INSPECTION HOLE ON
REDUCTION GEAR CASING COVER AND INSPECT
TEETHE IF THERE IS NO RUST ON THEM.
 MAINTENANCE CHECKLIST
 4.3.2 MAINTENANCE CHECK LIST FOR REGULAR INSPECTION
IT IS RECOMMENDENDABLE TO PERFORM THE RGULAR INSPECTION TO AVOID ACCIDENTAL
TROUBLES.

1 ) INSPECTION EVERY 3 MONTH

ITEM PROCEDURE AND INSPECTION

LUBRICATING OIL OPEN DRAIN VALVE OR PLUG FOR L.O. TANK AND
GORVERNOR AND CHECK FOR POLLUTION
OILNOIL AND MIXING OF WATER.
 MAINTENANCE CHECKLIST
2 ) INSPECTION EVERY YEAR

ITEM PROCEDURE AND INSPECTION

TURBINE BLADE AND NOZZLE CHECK BLADES AND NOZZLES FOR
EROSION,CORROSION,DAMAGE AND STIKING
SCALE.
( SCALE ON BLADES CAUSES
VIBRATION,ABNORMALSTEAM THRUST AND
INSUFFICIENT OUTPUT )
GOVERNOR VALVE,ITS SEAT CHECK VALVE AND VALVE SEAT FOR
AND PARTS. EROSION,CORROSION AND WEAR.
CHECK VALVE STEAM AND GUIDE BUSH FOR
WEAR.
DYNAMIC BALANCE FOR DYNAMIC BALANCE TO BE CARRIED IF ROTOR IS
ROTOR TURBINE ROTOR DAMAGED OR REPAIRED.
LABYRINTH PACKING AND CONFIRM WAER AND DAMAGED ON LABYRINTH
STEAM GUARD. PACKING AND STEAM GUARD.
SUITABLE CLEARANCE BETWEEN SHAFT
LABYRINTH PACKING IS SHOWN IN STANDARD
CLEARANCE TABLE.
 MAINTENANCE CHECKLIST
2 ) INSPECTION EVERY YEAR
ITEM PROCEDURE AND INSPECTION
BEARING METAL CONFIRM WEAR AND DAMAGE ON BEARING.SUITABLE
CLEARANCE IS SHOWN IN CLEARANCE TABLE.
NO ADJUSTMENT IS REQUIRED FOR RADIAL BEARING WHEN
FITTING AS THEY ARE MACHINED FINE.
THRUST BEARING CLEARANCE IS ADJUSTED WITH
ADJUSTING LINER AND ITS RELATING POSITION IS SUBJECT
TO CLEARANCE BETWEEN MOVING BLADES AND NOZZLES.
REDUCTION GEAR CONFIRM WEAR AND RUST ON TEETH FACES.IF
THERE IS ANY INDICATION OF RUST ,IMMEDIATELY
FIND CAUSE AND TAKE PROPER MEASURE.
MAIN L.O PUMP CHECK CLEARANCE BETWEEN CASING AND
PUMPING GEAR AND ALSO AXIAL CLEARANCE.

L.O. COOLER REMOVE INLET AND RETURN HEADS AND CHECK

FOR OCCURRENCE OF EROSION,CORROSION AND
CLOGGING OF FOREIGN MATTER FOR COOLING
WATER TUBES.
 LUBRICANTS
4.4.1 REPLACEMENT OF LUBRICANTS.
(1) THE REPLACEMANT OF THE LUBRICATING OIL IS BASED
ON DETERIORATION OR CONTAINMINATION OF L.O. BEING USED.

REPLACEMENT
LOCATION
AFTER INITIAL NORMAL
START OPERATION
L.O TANK WITHIN 3 EVERY 1 YEAR
MONTHS
WOODWARD WITHIN 3 EVERY 1 YEAR
GOVERNOR MONTHS
 LUBRICANTS
ISO VG 68 (INTERNATIONAL STANDARD ORGANIZATION) FOR LUBRICATING
OIL FOR THE BEARING,THE REDUCTION GEAR AND THE
WOODWARD GOVERNOR ARE RECOMMENDABLE.
THE BRAND NAMES OF THE OILS EQUIVALENT TO THE RECOMMENDABLE ONE ARE SHOWN IN TABLE .

NAME OF COMPANY LUBRICATING OIL

BP BP ENERGOL THB 68
77
CASTROL PERFECTO T 68
EXXON TRO-MAR T68
IDEMITSU KOSAN DAPHNE TURBINE OIL 68
JAPAN ENERGY RIX TURBINE OIL 68
MITSUBISHI OIL TURBINE OIL 68
DIAMOND MARINE 68
MOBIL MOBIL DTE OIL HEAVY
MOBIL DTE OIL HEAVY MEDIUM
 LUBRICANTS

NAME OF COMPANY LUBRICATING OIL

COSMO OIL SWALOOP RO68
SPECIAL TURBINE OIL68
NIPPON OIL FBK 68
CALTEX OIL REGAL OIL R & O 68
SHOWA SHELL OIL SHOSEKI TURBINEACE 66
SHOSEKI J – H 68
TEXACO OIL REGAL OIL R & O 68
STANDARD CLEARANCE AND LIMIT OF USE
 STANDARD CLEARANCE AND LIMIT OF USE
ALL UNIT IN MM

NO 1 2 3 4 5 6 7 8
STANDARD 0.15 – 0.2 0.2-0.3 0.2-0.3
CLEARANCE ( OVERALL ( OVERALL 0.10 – 0.14
( ON DIAMETER ) CLEARANCE ) CLEARANCE )

LIMIT OF
USE 0.23 0.4 0.24

NO 9 10 11 12 13 14 15 BACKLASH

STANDARD
CLEARANCE
0.15-0.19 0.23-0.26 0.2 – 0.24 2.2 –2.8 0.22-0.49

LIMIT OF
USE
0.29 0.36 0.34 1.5 – 3.5 -
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

1. INCORRECT ASSEMBLY 1. CHECK AXIAL PARALLELISM BETWEEN

SHAFT AND BEARING AND CORRECT.
CHECK TAPER LAND OF OIL GROOVE OF
THRUST BEARINGAND CORRECT OR
REPLACE
2. CORRECT IT WITHIN PERMISSIBLE VALUE.
2. ABNORMAL
MISALIGNMENTBETWEEN ( REFER TO INSTALLATION AND PIPING AND
TURBINE AND GENERATOR ALIGNMENT)
3. AIR,WATER OR FOREIGN 3. REFER TO INSUFFICIENT L.O SUPPLY AND
MATTER MIXED IN OIL. PRESSURE MENTIONED LATER IN THIS
TABLE 7.1
OVERHEATING OF 4. INCORRECT SELECTIONOF
OILIN OIL TANK 4. REFER OIL WITH CORRECT ONE.
BEARING
5. SHORTAGE OF OIL IN OIL ( REFER TO LUBRICANTS )
TANK AND OF OIL SUPPLY 5. REFER TO INSUFFICIENT L.O SUPPLY AND
AND OF OIL PRESSURE BY PRESSURE MENTIONED LATER IN THIS
MAIN L.O.PUMP TABLE 7.1
6. VIBRATION. 6. REFER TO VIBRATION MENTIONED LATER
7. DETERIORATION OR THIS TABLE 7.1
POLUTTION OF L.O. 7. REPLACE OIL
8. HIGH TEMPRATURE OF L.O 8. REFER TO TO HIGH TEMPRATURE OF L.O
SUPPLIED BYMAIN L.O SUPPLIED BY MAIN L.O PUMP MENTIONED
PUMP LATER IN THIS TABLE 7.1
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES
1. SHORTAGE OF OIL IN OIL 1. ADD OIL
TANK
2. ABNORMAL CONDITION OF 2. CHECK CLEARANCE BETWEEN SHAFT AND
MAIN L.O PUMP. BEARING OF MAIN L.O PUMP AND
CORRECT IT BY REPLACING BEARING IF
NECESSARY.CHECK AXIAL THRUST
CLEARANCE PUMPING GEAR AND
BEARINGS OF MAIN L.O PUMP AND
REPLACE BEARINGS IF NECESSARY.
3. ABNORMAL OIL ESCAPE
3. INCREASE OIL PRESSURE BY ADJUSTING
FROM L.O PRESSURE
VALVE ( REFER TO ADJUSTMENT FOR
ADJUSTING VALVE.
ACCESSORIES AND EMERGENCY TRIP )
INSUFFICIENT L.O
SUPPLY AND 4. AIR MIXED IN OIL
4. DRAW AIR FROM OIL STRAINER AND L.O
PRESSURE COOLER BY PLUG OR VENT VALVE.REPAIR
PART FROM WHERE AIR INVADES INTO OIL.
5. DRAW WATER FROM OIL TANK,OIL
5. WATER MIXED IN OIL STRAINER AND L.O COOLER BY PLUG OR
DRAIN VALVE.CHECK AND REPAIR
COOLING TUBE OF L.O COOLER IF
NECESSARY.CHECK STEAM LEAKAGE
FROM TURBINEGLAND INTO REDUCTION
GEAR CASINGAND REPLACE LABYRINTH
PACKINF IF NECESSARY.
6. CLEAN OIL STRAINER BY TURNING
6. FOREIGN MATTER IN OIL HANDLE ON OIL STRAINER.
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

1. FOULING OF COOLING 1. CLEAN COOLING TUBE OF L.O COOLER.

TUBE OF L.O COOLER.
2. INSUFFICIENT COOLING 2. INCREASE COOLING WATER BY OPENING
WATER FLOW TO L.O COOLING WATER INLET AND OUTLET
COOLER. VALVES FOR L.O COOLER AND KEEP L.O
TEMPRATURE BETWEEN 20 AND 45ºC
HIGH SUITABLE FOR CORRECT BEARING
TEMPRATURE OF TEMPRATURE.
L.O SUPPLIED BY 3. REPAIR TO WORK CORRECTLY.
MAIN L.O PUMP 3. ABNORMAL OPERATION OF
L.O TEMPRATURE CONTROL
VALVE IF FITTED.

4. HIGH TEMPRATURE OF
COOLING WATER TO L.O 4. DECREASE COOLING WATER TEMPRATURE.
COOLER
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

1. EXCESS OF SEALING 1. ADJUST SEALING STEAM ADJUSTING

STEAM SUPPLY ( INCASE OF VALVE PROVIDED ON THIS LINE.
EXHAUST STEAM IS
VACUUM )

STEAM LEAKAGE 2. OPEN FULLY DRIVING STEAM VALVE

2. EJECTOR IF FITTED DOES VALVE FOR EJECTOR.CHECK IF STEAM
FROM TURBINE NOT WORK SUFFICIENTLY.
GLAND. PROVIDED ON EJECTOR DRIVING STEAM
PIPE IS CLOGGED.CHEACK IF EJECTOR
NOZZLE IS FOULLED.
3. EXCESS OF CLEARANCE 3. REPLACE WITH NEW PACKING
BETWEEN SHAFT AND
LABYRINTH PACKING
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

1. DAMAGE OF BEARING 1. CHECK BRAING AND REPLACE IF

NECESSARY.
2. ABNORMAL 2. CORRECT IT BETWEEN PERMISSIBLE
MISALLIGNMENT BETWEEN VALUE ( REFER TO INSTALLATION AND
TURBINE AND GENERATOR. PIPING AND ALIGNMENT )
3. EXCESS OF BEARING
CLEARANCE. 3. REPLACE BEARING.

4. UNBALANCE OF SHAFT 4. CHECK AND CORRECT OR REPLACE WITH

DUE TO DAMAGE BLADES GREAT CONSIDERATION AND
OR SHROUDS OR BENDING DINAMICALLY REBALANCE.
VIBRATION OF SHAFT
5. ABNORMAL CONTACT
BETWEEN SHAFT AND 5. CORRECT AND REPLACE LABYRYNTH
LABYRINTH PACKING. PACKING.

6. THERMAL DEFORMATION 6. CHECK AND CORRECT.WARM-UP

OF SHAFT AND CASING DUE SUFFICIENT AND RUN TURBINE MANUALLY
TO INSUFFICIENT AND SUFFICIENTLY
WARMING UP AND
TURNING AND EXCESSIVE
OUTSIDE FORCE,LIKE
INCORRECT PIPING
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

7. ACCUMULATED DRAIN IN 7. DISCHARGE DRAIN VALVE OR PLUG.CLEAN

EXHAUST CASING AND DRAIN SEPARATOR AND DRAIN TRAP.
DRAIN IN INLET STEAM.
8. CHECK AND CORRECT.
8. ABNORMAL TEETH
CONTACT OF REDUCTION
VIBRATION
GEAR AND DRIVING GEAR
OF MAIN L.O PUMP AND
SPEED GOVENOR.
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

1. ABNORMAL CONTACT OR 5. CHECK AND CORRECT PARALLEL

DAMAGE OF TEETH OF BETWEEN PINION ANG GEAR WHEEL AND
PINION AND GEAR DRIVING WHEEL GEARS.CORRECT TEETH
WHEEL,DRIVING GEAR OF BY SHAVING OR GRIDING MACHINE ETC.
MAIN L.O PUMP AND
GOVERNOR.
NOISE
6. CLEAN OIL SPRAY TO TEETH
2. INSUFFICIENT OIL SPRAY
TO TEETH OF PINION GEAR
WHEEL AND DRIVING GEAR
OF MAIN L.O PUMP AND
GOVERNOR
 TROUBLE SHOOTING
TROUBLES CAUSES REMEDIES

1. STICKING IN MOVEMENT 5. CHECK AND CORRECK TO MOVE

OF COVERNOR SMOOTHLY OR REPLACE.
VALVE,VALVE STEAM AND
VALVE PLUG.
2. WEAR OR STICKINGOF 6. CORRECT TO MOVE SMOOTHLY OF
HUNTING IN JOINT AND PINS OF REPLACE.
OPERATION AND LINGKAGE.
7. REFER TO CORRECT OIL ( REFER TO
DIFFICULTLY OF 3. INCORRECT SLECTION OF LUBRICANT
SPEED CONTROL OIL IN GOVERNOR.
CAUSED BY
8. REPLACE OIL.
TURBINE ITSELF 4. DETERIORATION OR
PULLITION OF L.O IN
GOVERNOR

5. INCORRECT OPERATION OF 9. REFER TO MANUAL OF Woodward governor

GOVERNOR