ML20085G153

Monthly Operating Rept for Sept 1991 for Oyster Creek Nuclear Generating Station

ML20085G153
Person / Time
Site:	Oyster Creek
Issue date:	09/30/1991
From:	J. J. Barton, Bradley E GENERAL PUBLIC UTILITIES CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
C321-91-2285, NUDOCS 9110240164
Download: ML20085G153 (7)

Text

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d GPU Nuclear Corporation

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Nuclear

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Forked River New Jersey 08731-0388 609 971 4000 Wnter's Direct D:al Number:

C321-91-2785 October 15, 1991 U.S. Nuclear Regulatory Comission ATTH: Document Control Desk Washington, D.C.

20555

Subject:

Oyster Creek Nuclear Generating Station Docket No. 50-?l9 Monthly Operating Report In accordance with the Oyster Creek Nuclear Generating Station Operating License No. DPR-16, Appendix A, Section 6.9.1.C, enclosed are two (2) copies of the Monthly 0 prating Data (gray book information) for the Oyster Creek Nuclear Generating Station.

If you should have any questions, please contact Brenda DeMerchant, Oyster Creek Licensing Engineer at (609) 971-4642.

Sincerely, M

J.J. Barton Vice President and Director Oyster Creek JJB/BDEM: jc Attachment (MOR-RPT) cc:

Administrator, Region 1 Senior NRC Resident Inspector Oyster Creek NRC Project Manager 911024G164 910930 PDR ADOCK 05000219 b

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l GPU Nuclear Corporation is a subsidiary of Genera! Pubhc Utities Corporation

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MONTH!.Y OPERATING REPORT - SEPTEMBER 1991 At the beginning of September, Ofster Creek was operating at. about 70% power while t, condensate pump was repaired, full power was achieved on September 4th.

On Septernber 25th, during performance of tha isolation Condenser isolation test and calibration surveillance, pressure dam)ers in the instrument lines failed to meet their pressure bleedoff criteria. Due to the potentially degraded condition of the isolation condensers, a plant shutdowr, consnenced in parallel with repairs to the dampers.

Repairs to t.he dampers scre completed, the surveillance completed satisfactorily, and the plant

' rned to full power on September 20th.

MORillLY OPERATING REPORT SEP1 EMBER 1991 The foll onng Licensee Event Reports were submitted during the month of September 1991.

i LER 91-02)

On August 22, 1991, at 0306 hours0.00354 days <br />0.085 hours <br />5.059524e-4 weeks <br />1.16433e-4 months <br />, a reactor scram occurred due to low reactor l

water level.

The cause of the low reactor water level was a loss of feedwater flow due to a main feed pump trip on low suction )ressure.

The root cause of this event was a grounded condensate pump motor wiish led to a condensate pump trip while the plant was operating above 80% power.

The motor was replaced, i

The shrink in reactor water level caused by the scram and the reduction in feedvater flow caused reactor water icvel to reach the double low Reactor Protection System (RPS) setpoint which actuated appropriate Engineered Safety features.

A sncond event being reported is a procedure violation which occurred at 1012 hours0.0117 days <br />0.281 hours <br />0.00167 weeks <br />3.85066e-4 months <br />. While plant cooldown to cold shutdown cohditions was in progress, all five reactor recirculation discharge valves were shut simultaneously with reactor temperature above 212*F.

The plant achieved cold shutdown at approximately 1800 hours0.0208 days <br />0.5 hours <br />0.00298 weeks <br />6.849e-4 months <br />, i

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Oyster Crcok Station #1 Dockot No. 50-219 REFUELING INFOlutATION - SEPTEMBER, 1991 Name of Faciitty: Oyster Crook Station #1 scheduled date f or next ref ueling shutdown:

November 27, 1992 Gehodulod date for restart following refuelings robruary 9, 1993 Will refueling or resumption of operaticn thereafter require a Technical Specification change or other liconeo amantiment?

No Important licensing considerations associated with refueling, e.g.,

new or different fuel design or supplier, unreviewed der'.gn or performance analysin methods, oignificant changen in fuel design, now operating 1,rocedureus 1

Fuel design and 1r 00noral Electric Fuel Assemblion parrformance analysis methods have been approved by the NRC.

2.

Exxon Fuel Assemblies - No major changon have been made ner 1

aro there any anticipated.

l Tho number of fuel assemblics (a) in the core 560

=

(b) in the spent fuel storago pool = 1700 a

44 (c) in dry storage l'

l The present licensed opent fuel pool storage capacity and the size of any l

increase in licenood storage capacity that has been roquestod or is plannod, in j

number of fuel asuemblies Procent Liconned Capacity:

2600 The projected dato of the last refueling that can be diocharged to the spent fuel pool accuming the present 11 conned capacity:

Discharge capacity to _the spent fuel pool will be available through the 1994 refueling outage, i

NFC_RPT.WPD/26 l-l

L AVERAGE DAlf.Y POWER LEVEL tlET MWe DOCKET #.

. 502'.9 UllIT.

. OYSTER CREEK #1 REPORT DATE.

.OCTODER 7, 1991 CottPILED DY.

. ED BRADLEY TELEP110HE #.

.609-971-4097 MONTilt SEPTEMBER, 1991 D11 M

EAX M

1.

414 16.

602 2.

408 17.

593 3.

405 18.

598 4.

528 19.

593 5.

603 20.

606 6.

575 21.

612 7.

473 22.

614 8.

505 23, 614 9.

602 24.

612 10.

598 25.

575 11.

599 26.

501 12.

606 27.

614 13.

600 28.

615 14.

606 29.

014 15.

606 30.

611 1

l NRC_RPT.WPD/27

i OPERATING DATA REPORT OPERATING STATUS

1. DOCKET:

50-219

2. REPORTING PERIOD:

9/91

3. UTILITY CONTACT:

ED BRADLEY (609)971-4097

4. LICENSED THERMAL POWER (HWt):

1930

5. NAMEPLAPE RATING (OROSS HWo):

687.5 x 0.8 = 550

6. DESIGN ELECTRICAL RATING (NET HWo):

650

7. KAXIHUM DEPENDADLE CAPACITY (CROSS HWo):

642

8. KAXIMUM DEPENDADLE CAPACITY (NET HWo):

620

9. IF CitANGES OCCUR ABOVE SINCE LAST REPORT, GIVE hEASONS NONE

10. POWER LEVEL TO WHICH RESTRICTEt, IF ANY (NET HWo):

NONE

11. REASON FOR RESTRICTION, IF ANY:

NONE gQ11'II)

Ehli CUMULATIH

12. REPORT PERIOD HOURS 720.0 6551.0 190847.0

13. HOURS RX CRITICAL 720.0 3164.8 122229.9

14. RX RESERVE SHUTDOWN HRS 0.0 0.0 918.2

15. HRS CENERATOR ON-LINE 720.0 3074.5 118987.5

16. UT RESERVE SHTDWN HR$

0.0 0.0 1208.6

17. GROSS THERH ENERGY (HWH) 1312843.0 5434222.0 200329178.0 i

18. GROSS FLEC ENERGY (MWH) 426570 1768E50 67374483

19. NET ELEC ENEROY (HWH).

410401 1684520 64044552

20. UT SERVICE FACTOR 100.0 46.9 62.3

21. UT AVAIL FACTOR 100.0 46.9 63.0 l

22. UT CAP FACTOR (MDC NET) 91.9 41.5 54.6

23. UT CAP FACTOR (DER NET) 87.7 39.6 52.1

24. UT FORCED OUTAGE RATE 0.0 9.2 11.6

25. FORCED OUTAGE HRS.

0. 0 -

310.0 15580.5

26. SHUTDOWNS SCHEDULED OVER NEXT 6 HONTHS (TYPE, DATE, DURATION):

NONE

27. IF CURRENTLY SHUTDOWN, ESTIKATED STARTUP DATES-N/A NRC RPT.WPD/28

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