task list for mtg

7/27/2019 Task List for MTG

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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.


2/40

oring panel): Power,Voltage,Current,Power Factor,Frequency,Windi

. Record: Alarm and Sign of Overheated [at panel],Abnormal Sound


3/40

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


9/40

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


10/40

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,


11/40

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


12/40

oid rotor unbalance and rotor saging.


13/40

Cable and Tighten bolt

ck on the alarm and instrumentation circuit,After maintenance t


14/40


15/40

perform normal generator output Load test ,After maintenance


16/40


17/40

to perform Load Acceptance Test and With clean dry compressed a


18/40


19/40

r clean up heat exchanger tubes and enclosure as required


20/40

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




21/40

sembly

erform cleaning

ernator cooling system [Cleanliness,Blocked etc]

lubrication for bearing


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


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


ntrol card,rotating diodes,


22/40


sor,check the setting,etc and Perform calibration for the Elect

terminal and Control terminal] correct/calibrated and function



23/40

ronic Governor

al. Perform functional check on the control and interlocking ci


24/40

cuit,Perform functional check on the alarm and instrumentation


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circuit,After maintenance to perform normal generator output Lo


26/40

d test and After maintenance to perform Load Acceptance Test


27/40

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



card,rotating diodes,


28/40

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


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


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


ntrol


29/40

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


sor,check the setting,etc and Perform calibration for the Elect

erminal and Control terminal]

on the control and interlocking circuit,Perform functional chec



30/40

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


31/40

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


32/40

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


34/40

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]


36/40

ancing Test ,Tangen Delta measurement and Inspection of End Windi


37/40

ng and Spacer


38/40

18M-PM Replace Air Filter,EGMTG06

replace air filters, fuel injectors & combustion liner


39/40

24M-PM Replace Injector,EGMTG07

replace injectors, thermocouple and main battery pack


40/40

5Y-PM Engine Change Out,EGMT08

Engine change out

task list for mtg

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