ML20077Q270

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Monthly Operating Repts for Jul 1991 for Limerick Generating Station Units 1 & 2
ML20077Q270
Person / Time
Site: Limerick  Constellation icon.png
Issue date: 07/31/1991
From: Leitch G, Meck K
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9108210155
Download: ML20077Q270 (12)
v • d • e


Text

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,, T.S.6.9.1.6

.. l ' 3917099060 PHILADELPHIA ELECTRIC COMPANY LIMERICK GENER ATING ST ATION Y. O, DO K A S AN ATOG A, PENNSYLV ANI A 19464 (fil) 3271200, EXT. 3000 O fe A H A M M L& lT C H 0g00 9 # l99l l Docket llos. 50-352 50-353 License Nos. NPF-39 11PF-85 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

Subject:

Limerick Generating Station Monthly Operating Report For Units 1 and 2 Enclosed are the monthly operating reports for Limerick Units 1 and 2 for the month of July,1991 forwarded pursuant to Technical Specification 6.9.1.6.

Very truly ours, KWM/dms Enclosure cc: T. T. Martin, Administrator, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector 910s}p/fge PDR R ADOCA7I v3Ooo33; FIO731 PDR m,

3917099060 Docket No. #50-353 Attachment to Monthly Operating Report for i LIMERICK GENERATING STAT!ON UNIT 1 JULY 1 THROUGH JULY 31,1991

1. NARRATIVE

SUMMARY

OF OPERATING EXPERIENCES Limerick Unit 1 began the month of July at a nominal 100% of rated thormal power. On July 7, 8,13,17, and 18 power was reduced to 98-99% due to high turbine back pressure. On July 19, load was reduced to 87% because of '1H' condensate domineralizer regonoration. Reactor pomor was returned to 100% on the fo!!owing shift. A series of load drops to 94% were done due to high turbine back pressure and then a load drop to 86% for '1D* and 'IG' condensate filtor domineralizor regonoration was conducted. Reactor power was returnod to 100% on July 21.

Load drops of 6% 3%. air) 8% were conducted on July 21, 22, and 23 due to high turbine back pressure. On July 23 at 2343 hours0.0271 days <br />0.651 hours <br />0.00387 weeks <br />8.915115e-4 months <br />, with the reactor ht 100% power a '1B' reactor recirculation pump trip caused a power reduction to 35%. Reactor power was returned to 95%

on July 26, but a load drop to 60% was done for a 100% control rod pattern adjustment.

Reactor power was returnod to 100% on July 28. A brief load drop to 96% was performed for a control rod exercise test on July 28. On July 31, load drop to 90% to perform a control rod pattern adjustment was conducted. Unit 1 ended the month of July at 100% of rated thermal power.

Operational events that occurrod during the month of July included:

On July 24, the '1B' Reactor Recirculation Pump Drive Motor Breaker trippod. Roactor power was roduced to approximately 30%. The Reactor Rocirculation Pump tripped due .

to spurious actuation of the pump motor stator high temperature relay. This condition

. was reset and tho '1B' Reactor Rocirculation Pump was restarted.

11. Challences to Maln Steam Safety Relief Va!ves There were no challengos to the Main Steam Safety Roliof Valves during the month of July.

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DOCMET NO. 50 - 35~

391709906.0 .

UN!' 5sCTDOWN3 Att H cE n L E D U CT I O'i5 ----_-_----------------------

UNIT NAVE LIVERICb UNIT 1 DATE AUGUST 7 199*

JULv. 1991 COMPLETED B( PHILADELPHIA ELECTRIC COWPANY REJORT FON" . * ------------------.--------

KARL WECK REPORTS SUPERVISOR BUSINESS UNIT LIwERICA GENERATING STATION TELEPHONE (215) 327-1200 EXTENSION 3320 VETHC9 O' i LICENSEE lSYSTEMICOMPONEN7l CAUSE AND CORRECTIVE 1 l l } l EVENT l CODE ! CODE ( ACTION TO l iTYPElDURATION!REASONISMUTTING D0wNI (4) } (5) ) PREVENT RECURRENCE NO.l DATE l (1)l (HOURS)! (2) l PEACTOR (3) i REPORT v l .----------- ---------

-- - ------ ----------- -- --- -- ~. -- - ----------------- --- ---l -- --- ------

l }  ! I i REGENEAATION.

! l  !

1 i I I I i 1 I I 4 N/A l HA l TURBIN l LOAD wAS REDUCED 6% DUi TO HIGH 'TUkBINE 4; i 910721 l F l 000.0 i l

F l l l l 1 1 BACK PRESSURE' I l {

1 i 1 I I I  !

4 l N/A l HA TURBIN LOAD WAS REDUCED 3% ouE TO HIGH ' TURS I .- I F

42 I 910722 l F l 000.0 l l l l l BACK PRESSupr' l l l i i i

' I i F 4 l N/A l HA TURBIN i LOAD WAS REDUCED 8% DUE TO HIGH 'TUR3INE 43 910723 l F l COO.O l  !

i l . l BARK PRESSURE' i j i l l i I t VD i 1 1 1 l l N/A j CA  ! PUMPxx l LOAD WAS RF 'ED 65% DUE TO RECIRC F 4 l 4A 1 910723 F 000.0 i l 1 TRIP.

I l i I i l 1 I 1 I

F i

4 j N/A l RB i CONROD j LOAD WAS REDUCED 1% TO PERFORM CONT OL 45 91072E l 5 l 000.0 l l l l l l ROD PATTERN ADJU$idENT.

! l l i I I I i l 1 I LOAD WAS REDUCED 4% TO PERF0FM CONTROL F 4 l N/A l RB i CONROD 46  ! 910728 I 5 1 000.0 3

i l

l l l l l ROD PATTERN ADJUSTMENT.

l 1 f I I

I I i l 4 l N/A l RB l CONROD LOAD WAS REDUCED 10% TO PERFORM CONTROL 47 I 910731 1 5 l 000.0 l 8 1 l l l i ROD PATTERN ADJUSTMENT.

} { l l 1 i i 1 1  ! ----- 1 i I i

i I l i 1 - 1 I (3) (4)

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METHOD EXHIBIT G- INSTRUCTIONS F - FORCED REASON * - WaNUAu FOR PREPARATION OF DATA S - SLMEDULED A - EQUIRMENT FAILURE f EXPL A!t 2 - MANUAL SCCAY. ENTRv SWEETS TOR LICENSEE B - MAINTENANCt OR TES' 3 - AUTOMATIC SCRAY EVENT REPORT (LER)

C- REFUELIFG 4 - OTHER (EXPLAIN) FILE (NUREG-0161)

D - REGULATORY DESTRICTION E - OaERATOR TRAINING - LICENSE ExAMINATIUN (S)

F - ADMINISTRATIVE G - OPERATIONAL ERACL (EA LAINJ ExHIB!i . - SAME SOURCE H - OTHERfExPLAIN)

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I

. .. . 3917099060 Docket No. #50 353 Attachment to Monthly Operating Report for July 1991 LIMERICK GENERATING STATION UNIT 2 JULY 1 THROUGH JULY 31,1991

1. NARRATIVE

SUMMARY

OF OPERaflNG EXPERIENCES Limerick Unit 2 began the month of July at a nominal 100% of rated thermal power. On July 25, reactor power was briefly reduced to 90% to perform Main Turbine Control Valve testing. On July 27, reactor power was briefly reduced to 96% to perform a control rod pattern adjustment.

Unit 2 ended the month of July at 100% of rated thermal power.

i l 11. Challenaes to Main Steam Safety Relief Valves l

There were no challenges to the Main Steam Safety Relief Valves during the month of July.

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ODELATING DATA REPORT (CONTINUED 1 DOCKET NO. 50 - 253 3917099060-

_a DATE AUGUST 1, 1991 ,

THIS MONTH VR-TC*-DATE CUMULATIVE

19. UNIT SERVICE FACTOR 100.0 63.9 76.2
20. UNIT AVAILABILITY FACTOP 100.0 63.9 7E.2 21 UNIT CAPACITV FACTOR (U5!NG MDC NETf 98.1 61.7 72.8
22. UNIT CADACITV FACTOR (USING PER ET) 98.1 61. 72.0
23. UNIT FORCED OUTAGE RATE O.0 1.1 7.7 24 5HUTDOWNS SCHEDULED OVER NEXT 6 MO*.**, ' TYPE. DATE. AND PURATION OF EACH):
25. IF SHUTDOWN AT END OF REPORT PERIOD. ESTIMATED DATE OF STARTUD:
26. UNITS IN TEST STATUS (PRIOR TO COMMERCIAL OPERATION): FORECAST ACHIEVED INITIAL CRITICALITY 08/12/89 08/12/89 INITIAL ELECTRICITY 09/01/89 09/01/89 COMMERCIAL OPERATION 02/01/90 01/08/90 PAGE 2 0: 2

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