task list for mtg
TRANSCRIPT
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1D-EBC MTG Online Inspctn,EGMTG01
1.Take and record generator operation readings (from moni
2.Monitor cooling air temperature at generator stator
3.Perform physical inspection and check any abnormalities.
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oring panel): Power,Voltage,Current,Power Factor,Frequency,Windi
. Record: Alarm and Sign of Overheated [at panel],Abnormal Sound
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ng & Bearing Temperature,Vibration Reading - for those with indic
/ Noise/ Hunting Noise [at GTG site]
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ator
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1M-EBC MTG Online Inspctn,EGMTG02
1. Perform Daily Maintenance Tasks
2. Perform alternator vibration reading
3. Check bearing condition using bearing analyzer [online
4. Perform visual inspection on Earthing System conection5. Check condition of alternator ventilation system fan
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] and leaking bearing lubrication
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4) To ensure operators are well trained and competent for
5) To establish procedures for conductiong winding IR te
6) To produce procedures for generator rotor pull out and
7) Check and review spare part inventories: excitation co
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and perform cleaning
heck & tighten holding bolt and screw. Check air gap and clean d
Resistance,Ohmic,and Polarization index
Index,Perform Ohmic Resistance Test and Inspect space heater f
sistance,Check for signs of overheated,and tighten bolt and
tion on sign of overheating and cleanliness
ernator cooling system [Cleanliness,Blocked etc]
lubrication for bearing
synchronization capability with other generator and Test synch
tightness,signs of overheating,insulation for cracking,physical
ing is correct/calibrated and functional,Perform functional chec
t operation
NER and Measure NER value
or loose parts and Clean & repaint as necessary
aker as per HV Switchgear checklist
ating limit
rained for the generator operation.
procedures
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the control and parallel operation of generators
st,etc,to avoid loss of magnetism
generator rotor cool down as recommended by manufacturer to a
ntrol card,rotating diodes,
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rt accumulation in the air gap
nctional (Ohmic value,IR)
onizing protective relay (if required)
damage and moisture,Measure IR and Polarization index for power
on the control and interlocking circuit,Perform fucntional che
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oid rotor unbalance and rotor saging.
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Cable and Tighten bolt
ck on the alarm and instrumentation circuit,After maintenance t
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perform normal generator output Load test ,After maintenance
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to perform Load Acceptance Test and With clean dry compressed a
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r clean up heat exchanger tubes and enclosure as required
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32K-PM Shutdown Maintenance,EGMTG04
SHUTDOWN INSPECTION
Permanent Magnet Generator (PMG) - Check and clean PMG as
Rotor excitation coils - Measure winding resistance and PLube oil cooler pump Motor: Perform visual
Cooling System [Filter,Fan,Tubing ] - Check generator alt
Generator bearing - Measure vibration level and Perform
Generator speed sensor - Check magnetic pickup signal
Synchronizing & Control panel - After maintenance : Verif
Electronic Governor System - Governor system (visual ins
Battery - Impedance test,Measure Voltage reading (Individ
Terminal Box and Electrical Connection Joints - Check cl
Gauges/Indicator - Check indicators and gauges for correc
Neutral Gounding - Check neutral grounding connection to
Casing/Frame - Check for crack in base/support for broken
NOTES : OPERATING PROCEDURE REVIEW
1) To establish clear operating procedure with clear oper
2) To ensure the panel operators are competent and well t
4) To ensure operators are well trained and competent for
5) To establish procedures for conductiong winding IR te
6) To produce procedures for generator rotor pull out and
7) Check and review spare part inventories: excitation co
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sembly
erform cleaning
ernator cooling system [Cleanliness,Blocked etc]
lubrication for bearing
synchronization capability with other generator and Test synch
pection),Check and test governor system,clean magnetic speed se
ual & total),Physical condition (Water level,Deformation etc)
eanliness & Water ingress/Moisture and Retighten bolts[Generato
t operation
NER and Measure NER value
or loose parts or corrosion and Clean & repaint as necessary
ating limit
rained for the generator operation. procedures
the control and parallel operation of generators
st,etc,to avoid loss of magnetism
generator rotor cool down as recommended by manufacturer to a
ntrol card,rotating diodes,
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onizing protective relay (if required)
sor,check the setting,etc and Perform calibration for the Elect
terminal and Control terminal] correct/calibrated and function
oid rotor unbalance and rotor saging.
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ronic Governor
al. Perform functional check on the control and interlocking ci
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cuit,Perform functional check on the alarm and instrumentation
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circuit,After maintenance to perform normal generator output Lo
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d test and After maintenance to perform Load Acceptance Test
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120M-PM Shutdown Maintenance,EGMTG05
Permanent Magnet Generator (PMG)[If applicable] -Check an
Rotor excitation coils - Measure winding resistance and P
Generator rotor - Check rotor air fan for fatigue/crack,C
Stator Exciter Winding - Check :[IR,Ohmic and PI],Check RStator main winding - Perform Megger Test,Measure Polariz
Rotating diodes & Surge suppressor - Change rotating diod
Automatic Voltage Regulator (AVR) - AVR Panel (sign of ov
Lube oil filter - Filter Replacement / Cleaning
Lube oil cooler pump motor - Bearing (visual inspection)
Cooling System [Filter,Fan,Tubing ] - Check generator alt
Generator radial and roller bearing - NDE and DE :Measure
Generator speed sensor - Check magnetic pickup signal
Synchronizing & Control panel - After maintenance : Verif
Electronic Governor System - Governor system (visual insBattery - Impedance test,Measure Voltage reading (Individ
Terminal Box and Electrical Connection Joints - Check cle
Miscellaneous - Ensure the winding temperature alarm sett
Gauges/Indicator - Check indicators and gauges for correc
Neutral Gounding - Check neutral grounding connection to
Casing/Frame - Check for crack in base/support for broken
1) To establish clear operating procedure with clear oper
2) To ensure the panel operators are competent and well t
3) Establish synchronising,load control and load sharing
4) To ensure operators are well trained and competent for5) To establish procedures for conductiong winding IR te
6) To produce procedures for generator rotor pull out and
7) Check and review spare part inventories: excitation co
card,rotating diodes,
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d clean PMG assembly
erform cleaning / Refurbish winding
heck & tighten holding bolt and screw,Check clearance between ro
C circuit blocks and Overvoltage Protection and Check characteation Ratio Index Perform Ohmic Resistance Test,Inspect space he
e
erheating,visual check,etc ),Perform calibration inspection and
,Lubrication system (leak check,visual inspection,cleaning) and
ernator cooling system [Cleanliness,Blocked etc] and Perform IR
vibration level,Change roller bearing lubrication /greasing for
synchronization capability with other generator and Test synch
pection),Check and test governor system,clean magnetic speed seual & total) and Physical condition (Water level,Deformation etc)
anliness & Water ingress/Moisture and Retighten bolts[Generator
ing is correct/calibrated and functional,Perform functional chec
t operation
NER and Measure NER value
or loose parts or corrosion and Clean & repaint as necessary
ating limit
rained for the generator operation.
procedures
the control and parallel operation of generatorsst,etc,to avoid loss of magnetism
generator rotor cool down as recommended by manufacturer to a
ntrol
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or & stator ,To check wedge,To check retainer rings for loosenes
istic of the Diodester [RTD] functional (Ohmic value,IR),Perform cleaning of the wi
ontrol card inspection for loose connection,abnormalities etc
Perform IR and PI test for motor [Refer Appendix 12 PTS 63100811
nd PI test for motor
bearing - For non self lubricate,Perform Insulation Resistance,P
onizing protective relay (if required)
sor,check the setting,etc and Perform calibration for the Elect
erminal and Control terminal]
on the control and interlocking circuit,Perform functional chec
oid rotor unbalance and rotor saging.
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s,Cleaning with Dry Ice/CO2 or Compressed air & Electrical Solve
nding [e. g. recommended using CO2] ,Partial Discharge,To check
]
erform clearance check between housing and bearing and Check con
ronic Governor
k on the alarm and instrumentation circuit,After maintenance to
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t,Rotor insulation resistance,Voltage drop test to ensure rotor
edge,Check stator core for loosenes/ blocked cooling channel,Che
ition for white metal [sleeve bearing] and change if necessary
erform normal generator output Load test and After maintenance t
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coil turns are balanced ,Rotor Earthing Connection & EF Detectio
ck stator winding for debris,hot spot,deformation,looseness of s
o perform Load Acceptance Test
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: Carbon brush inspection method etc. Partial Discharge check at
acers between coil and support ring,HIPOT test for all the windi
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winding : for signs of PD if was not rewounded. Check winding H
gs [with reduced voltage to 1. 5 times] and Tangen Delta measur
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tSpot especially at end winding (visual signs),Rotor Dynamic Bal
ment [to check each winding phase health]
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ancing Test ,Tangen Delta measurement and Inspection of End Windi
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ng and Spacer
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18M-PM Replace Air Filter,EGMTG06
replace air filters, fuel injectors & combustion liner
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24M-PM Replace Injector,EGMTG07
replace injectors, thermocouple and main battery pack
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5Y-PM Engine Change Out,EGMT08
Engine change out