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Revision 0 March, 1984 Page 1 of 14 GRAND GULF NUCLEAR STATION GAS TURBINE GENERATOR SYSTEM MAINTENANCE AND OPERATION PROCEDURE
- 1. 0 PURPOSE
2.0 REFERENCES
3.0 GENERAL REQUIREMENTS 4.0. MAINTENANCE REQUIREMENTS S.0 SYSTEM START-UP 6.0 OPERATIONAL TESTING 7.0 OPERATION 8.0 DOCUMENTATION REQUIREMENTS APPENDIX A - MAINTENANCE CHECKLIST APPENDIX B - DAILY CHECK AND LOG RECORD APPENDIX C - START-UP CHECKLIST APPENDIX D - ACCELERATION CHECKS TIT BAND AT 6000 RPM AND RPM INCREASING APPENDIX E - CHECKLIST FOR OPERATING MORE THAN AN HOUR JNFORMATION CC'PY ONLY t
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I R:; vision 0 March, 1984 Page 2 of 14
- 1. 0 PURPOSE The purpose of this procedure is to provide t.he requirements for the maintenance, operational testing, and operation of the Standby Gas Turbine Generator (GTG) System.
2.0 REFERENCES
2.1 MP&L Technical Special Test Instruction (TSTI) 09-S-01-601
- 2. 2 0'Brien Mobile Power Rental Company Gas Turbine Generator Set Manual
- 2. 3 Bechtel System Description - Gas Turbine Generator System; S0-018.5 3.0 GENERAL REQUIREME'NTS 3.1 The GTG system shall be maintained in a standby mode so as to minimize the time required to start and make the system oper-ational.
The standby mode will be established by performance of daily and other routine maintenance as specified in Appendix A and Appendix B and by periodically testing as specified in' section 5.0.
- 3. 2 The MP&L Unit #1 shift supervisor and the MP&L Unit #2 Project Manager shall be notified of any change in the availability status of the system.
3.2.1 Unit #1 Control Room - Phone 8-435-5374.
3.2.2 Ted H. Cloninger (Work) Extension 3284 (Home) 924-2762
- 3. 3 The MP&L Unit #1 shift supervisor shall be notified prior to initiating start and run testing of the system as specified in Appendix C, sections 6.0 and 7.0.
3.3.1 Unit #1 Control Room - Phone 8-435-5374
- 3. 4 Personnel authorized to operate the GTG system shall be trained in the content of this procedure and the operation of the system.
4.0 MAINTENANCE REQUIREMENTS 4.1 Conformance to the maintenance requirements contained in this section is necessary to assure operational availacility of the GTG system.
IN FOR VI ATION CO PY ONLY
Revision 0 March, 1984 Page 3 of 14
- 4. 2 Routine periodic maintenance shall be performed for all items on the Maintenance Checklist contained in Appendix A and Appendix B.
The results of the maintenance inspections per-formed and any corrective action taken will be noted on the checklist.
5.0 SYSTEM START-UP 5.1 The sequence outlined in Appendix C shall be followed in starting the turbines, synchronizing the generators, preparing the system to accept loading, and for shutdown of the system.
6.0 OPERATIONAL TESTING 6.1 The GTG system will be tested in coordination with MP&L to verify proper system operation and ability to operate with the required loading.
Testing will be performed to MP&L procedure TSTI 09-5-01-601 (Reference 2.1).
6.2 Following initial testing, the GTG system will be tested at least once every 31 day s to verify system opernbility.
This periodic test shall consist of starting the turbines, synchro-nizing the units and running a minimum of 60 minutes in an unloaded condition.
6.3 During test operation of the system, data shall be recorded as required by the run checklist of Appendix E on at least an
/
hourly basis.
7.0 OPERATION 7.1 The GTG system shall be started and prepared for operation at the direction of the MP&L Unit #1 shift supervisor or his designee.
This direction shall be made by telephone or radio from the Unit #1 Control Room.
- 7. 2 The GTG system duty operator snall notify the Unit #1 Control Room (Phone 8-435-5374 or radio) when the system is operating and ready to accept Unit #1 loading.
7.3 During system operation, data shall be recorded as required by the run checklist of Appendix E on at least an hourly basis.
- 8. 0 DOCUMENTATION REOUIREMENTS 8.1 The maintenance records contained in Appendix A and Appendix 8 shall be completed as required by section 3.0 and maintained
_in the GTG system file.
- 8. 2 Records of training of GTG system operators shall be main-tained in the GTG system file.
1N =OR V ATIC'N CC'PY ONLY
F Revision 0 March, 1984 Page 4 of 14 8.3 After completion of. the monthly operational test run and a review of the maintenance records since the last run, the MP&L Unit #2 Project Manager shall be notified, in writing, of the operational availability status of the system.
8.4 Records of run time data contained in Appendix E required by Appendix C, sections 6.0 and 7.0, shall be maintained in the GTG system file.
I N FO R Vi A~~lON COPY ON _.Y e
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Revision 0 March, 1984 Page 5 of 14 APPENDIX A GTG MAINTENANCE CHECKLIST (WEEKLY) 1.
For APU Batteries a.
Put a battery charger on units for a minimum of 1 hr.
Record Volts Amps (After 1 Hr.)
2.
Air Cleaners a.
Check for obstructions (visual).
OK Remove Obstructions
. QUARTERLY CHECKLIST (90 DAYS) 1.
- 2 Diesel Main Storage Tank a.
Contact Barry Wedgeworth (MP&L) to perform Quarterly Sampling and Testing.
Date Last Contacted b.
Minimum Testing (1) Specified or API Gravity (2) Water 'and Sediment (3) Viscosity
, \\,<.OR VI ATlON CC'PY ONLY RFE Review Date
R: vision 0 March, 1984 Page 6 of 14 APPENDIX B DAILY CHECKLIST Date Operators Unit ENGINE SYSTEM A.
FUEL 1.
Fuel level in main storage tank (min. 5' in tank).
2.
Level of fuel in auxiliary tank (read gauge).
3.
Percent of fuel in day tank
' (read gauge).
4.
Check all fuel line connections (make sure all valves are open).
Leaks Corrective Action No Leaks Action Taken:
B.
LUBE OIL 1.
Check oil in gear box.
Full Low Ci'l Added Lube oil condition A.
Milky B.
Diluted C.
Dirty D.
Clear 2.
For Generator 1 and Generator 2, check oil level in air expander.
Full Low Oil Added C.
BATTERIES AND CHARGING SYSTEM 1.
Check and record battery chargers.
- Volts Amps
" Notify GTG Engineers if volts are low or 0 and if amps are high (above 10 amps).
Corrective Action (if required):
! N FOR'vi ATlO N COPY C'N _Y
Revision 0 March, 1984 Page 7 of 14 APU SYSTEM A.
FUEL SYSTEM 1.
Fuel level in main storage tank (on auxiliary trailer).
Note:
(Min. level 9".)
2.
Check all fuel line connections (make sure all valves are open).
Leaks _
Corrective Action No Leaks Action Taken:
B.
LUBE OIL 1.
Check oil level.
Good Add Oil r
C.
BATTERIES 1.
Check connections are tight.
OK Tighten 2.
Push test button on unit record battery voltage.
Volts (APU 2 has no meter.)
3.
Verify connecting cord between APU and GTG is plugged in.
OK Re-attached 4.
Verify air hose is connected and secure.
OK Re-attached (Attach APU air hose for Unit #3 only, when needed for operation.)
INFO lMAIION COPY C'NLY RFE Review Date
Revision 0 March, 1984 Page 8 of 14 APPENDIX C START-UP CHECKLIST
- 1. 0 Start-uo of APUs Open compressor inlet housing doors and turbine exhaust doors and check that all air hoses are connected.
1.1 Position Master Switch to RUN.
1.2 Momentarily position Start Switch to ON and release.
1.3 Momentarily switch Air Load Switch.to ON to test output air 1.4 hose.
2.0 Start-uo of Turbine #3 Verify Location Switch to LOCAL position.
2.1 Set Operator Selector Switch to MANUAL position.
2.2 Verify Flash Switch to ARMED position.
2.3 Verify Oil Cooler Switch to MANUAL position.
2.4 Position Engine Control Circuit Breaker ON.
- 2. 5 Push in Reset Button and release.
2.6 Push in Start Button and Release.
2.7 After unit is running and up to speed, close the field breaker.
2.8 Observe Voltage Meters for proper voltage and frequency and 2.9 adjust as required.
Start-uo of Turbines #1 and #2 3.0 Position DC Power Switch ON.
3.1 Verify Fuel Transfer System to ARMED position.
3.2 Verify Emergency Light Switch to ARMED position.
3.3 Verify Fuel Enrichment Switch to 0FF.
3.4 Verify Governor Mode Switch to DROOP position.
3.5 Verify Reactive Oroop Switch to ON position.
3.6 Pusn in,Re esSuO R cVpasA T I U N,
el N-3.7 CODY ONLY
Revision 0 March, 1984 Page 9 of 14 3.8 If alarm sounds, push alarm silence and check indicating lights for fault - correct as necessary.
3.9 Push Start Button.
3.10 Observe Meters for proper voltage and frequencies and adjust, as required.
4.0 Engine Start Failure 4.1 If engine fail to start, the turbine must be motored for one minute to remove excess fuel from turbine prior to attempting to restart the engine.
Excess fuel should be wiped from around: turbine and from floor.
Note:
Do not attempt to start engine if temperature is above 200*F, motor and cool first.
4.2 During turbine start at approximately 6000 RPM, the turbine inlet temperature should be in the range of 1350-1450 F at an ambient terr.perature of 60 F or in the range of Appendix 0 for other ambient temperatures.
Note:
No adjustments are to be made without prior verbal approval of O'Brien Machinery (Phone 1-215-269-6600).
If turbine inlet temperature is outside of the applicable range, adjust Acceleration (CDP) adjustment.
Clockwise adjustment of 1/4 turn decreases inlet temperature approximately 100 F.
Counterclockwise increases temperature approximately 100*F.
Note:
Do not make any other adjustments on the engines.
5.0 Sychronizino and Paralleling the Units - Monthly Test 5.1 After starting all three units, checking and setting voltages and speeds, close unit circuit breaker on Unit #3.
5.2 Turn Synchronizing Switch in Unit #2 to ON anc observe bus and generator voltage.
5.3 Adjust Unit #2 generator voltage to match bus /oltage.
(Rheostat clockwise adjustment increases voltage.)
5.4 Observe Sychronizing Scope and lignts.
Adjust pass rate to approximately 3 times per minute by using Fuel Governor Control Switch to increase or decrease speed, as necessary.
Hold switch at desired position momentarily.
Switch will return to center.
- 5. 5 With Synchronizing Scope and lights indicating ::rocer pass rate and scope rotating clockwise, Unit #2 is syncnronized and ready to be paralleled to bus.
5.6 With Sychronizing Scope needle at exactly 12 o' clock and Synchronizing lights are unlit, close circuit breaker on Unit o it o.
opOPY C'NiLY
R3 vision 0 March, 1984 Page 10 of 14 5.7 Adjust Governor Control Switch to zero KW indication on meter.
5.8 Turn 0FFSychSnizingSwitch.
- 5. 9 Adjust voltage rheostat to equalize power factor on all units.
5.10 Synchronize Unit #1 by repeating steps 5.2 through 5.9.
5.11 Trim all three units by adjusting voltage rheostat until common power factor is established and Governor Control Switch to zero KW.
- 6. 0 Sychronizino and Parallel Units With Other Source 6.1 Start all units as per Appendix C, sections 1, 2 and 3.
6.2 Select any one of the three units and sychronize as described in section 5.2 thru 5.7.
6.3 Immediately after closing circuit breaker, use governor control switch to pick up load.
300 to 400 KW should be sufficient to stabilize unit initially.
6.4 Use voltage adjust rheostat to correct power factor to approxi-mately.8 lag.
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- 6. 5 Bring remaining units on line using same procedure as detailed in steps 6.2 thru 6.4.
i 6.6 Trim all units to equalize KW and power factor indications.
- 6. 7 If above steps are being taken in preparation for removal of utility from bus, load units to the approximate level of existing bus load.
l 6.7 If the above steps are being taken in preparation for removal of diesel from bus, coordination will be required between control room and GTG site to gradually shift load from diesel to GTGs prior to opening diesel circuit breaker.
- 7. 0 Operation of GTGs Onto Dead Bus 7.1 Start units as Appendix C, sections 1, 2, and 3.
7.2 Select any one of the three units and close its breaker onto bus.
- 7. 3 Coordinate with control room to allcw start up of all Dus load, except large pumo motors.
7.4 Bring remaining units onto cus as described in section 6.2 thru E.4 NFORMATION COPY ONLY
Revision 0 March, 1984 Page 11 of 14 7.5 Trim all units to equalize KW and PF.
7.6 After pumps are started, retrim system.
8.0 Shut Down of APUs 8.1 After GTGs have been started, allow APUs to run for 5 minutes to cool down.
- 8. 2 Turn Master Switch to STOP position.
9.0 Shut Down of GTGs Monthly Test 9.1 Open unit circuit breakers one at a time.
- 9. 2 Push stop button.
9.3 After GTGs stop, turn 0FF DC Power Supply Switch.
10.0 Shut Down of GTGs After Loadino 10.1 After operating under load, units must be given approximately 10 minutes coci down time before shut down.
10.2 After cool down, shut down units as described in sections 9.1 thru 9.3.
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Revision 0 March, 1984 Page 14 of 14 APPENDIX E CHECK AND LOG RECORD (To be used when t. nit is operating more than an hour)
(FOR UNIT #3 ONLY)
Record Every Hour (To be used when unit is operating)
Name Date Unit No.
Remarks Time Oil Filter in osi Oil Filter out osi Oil Temo *F Engine Oil osi Gear Box osi Fuel Manifold psi Fuel Filter psi AC Amo 1 AC Amo 2 AC Amo 3 KW Power Factor AC Volts 1-2 ( A-B)
AC Volts 2-3 (B-C)
AC Volts 3-1 (C-A)
Frequency Field OP Amos Turbine RPM Turbine Temo Vib Como Vib Turbine Hour Meter DC Amos (130V Bat)
Fuel Tank Level
!NFORMATON COPY ONLY RFE Review Date