ML20081F452

Monthly Operating Rept for May 1991 for Cooper Nuclear Station

ML20081F452
Person / Time
Site:	Cooper
Issue date:	05/31/1991
From:	Kernes E, Meacham J NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CNSS918685, NUDOCS 9106100296
Download: ML20081F452 (5)

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- 3 COOPT H NUCLL AH $ T A1 ION l Nebraska Public Power District "" """Mn??2E'lM.!s""^T" "'" i n--- -=- = ..- = = == = - = r- .

,wc== ,_r4 CNSS918685-June 3, 1991 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555 Subj ec t: Monthly operating Status Report for May 1991, Docket No. 50-298.

Centlemen:

Enclosed for your information and use is the Cooper Nuclear Station Monthly Operating Status Report for May 1991. The report includes Operating Status, Average Daily Unit Power Level Unit Shutdown Data and a Narrative Summary of Operating Experience.

l Should you have any comments, or require additional information regarding this report, please contact me.

l Sincerely, b er <rs-J M. Meacham vision Manager of Nuclear Operations JMM:EAK: kap Enclosures cc: C. D. Watson w/ enclosures R. D. Martin w/ enclosures I  !

l 9106100296 910531

{DR ADOCK 05000298 PDR

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UNIT SHUTDOWNS AND POWER REDUCTIONS . DOCKET NO. 050-0298 .-

UNIT NAME Cooper Nuclear Station :

. DATE- June 3.1991 '.1 COMPLETED BY E. A. Kernes /

- TELEPHONE (4021825-5487' j REPORT MONTH " May 1991_ < -

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l Method Of Ucensee Cause & Corrective Component 5 Duration Shutting Event System' Action to No. Dste Type' . (Hours) ' Reason 2 Down Reactor3 . Report Code ' Code Prevent Recurrence l 91-02 5441 S' 38.5 B' 2 NO - - Shutdown to repair leaking core spray va% -

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l 1 F: Ferced 2 Reason: 3 Method: 4 Exhbit G - instrucronsfor S: Scheduted A- Equipment Failure (Explain) 1 - Manual Preparate of Data Entry 8 - Maintenance or Test 2 - Manual Scram Sheets for Licensee Event C- Refueing 3 - AutomaticScram Report (LER) File (NUREGC161) I D - Regulatory Restriction 4 - Continued E - Operator Training & Ucense Exar nnation 5 - Reduced Load 5 ExhitntI- Same Source F - Administrative 6 - Other  !

G - Operational Error (Explain)

H - Other (Esplair:)

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.o AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-0298 UNIT CNS DATE June 3, 1991 TELEPHONE (492) 825-5487 MONTH __May 1991 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Fet) (MWe-Net) 1 770 17 , 766__ _

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770 18 766 l I

3 770 19 732 4 773 20 768 5 769 21 768 6 776 22 768 7 775 23 766 8 746 ___

24 766 l l

9 88 25 766  !

10 0 26 _

715 369 764 I 11 27 12 676 28 763 13 713 29 761 14 769 30 759 15 767 31 759 16 768 ZNSTRUCTIONS.

On this format, list the average daily unit power level in MWe-Net for each day in the. reporting month. Compute to the nearest whole megawatt,

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- OPERATIONS NARRATIVE COOPER NUCLEAR STATION MAY 1991 NORMAL POWER OPERATION WAS EXPERIENCED DURING THE MONTH OF MAY WITH ONE EXCEPTION. A SHUTDOWN WAS CONDUCTED TO REPAIR A LEAKING CORE SPRAY VALVE. A CAPACITY FACTOR OF 91.6% WAS ACHIEVED FOR THE MONTH.

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b OPERATING DATA REPORT DOCKET NO, Q3.Q 0298 UNIT _qNS DATE J und. 1991 OPERATING STATUS TELEP110NE (402). 825-S487 i

1, Unit Name: Coooer Nuclear Station Notes

2. Reporting Period: Mav 1991 3 Ucensed Thermal Power (MWir 2381

4. - Nameplate Rating (Gross MWe): 836 5 Design Electrical Rating (Not cAWe); 778 6 Maximum Dependable Capacity (Gross MWe): 787 7, Maximum Dependable Capacity (Not MWe): 764

8. If Changes Occur in Oapacity Ratings (ftems Number 3 Through 7) Since Last Report, Give Reasons-

9. Power Level To Which Restricted, if Any (Net MWe):

10. Reasons For Restriction,if Any:

This Month v r.-to-Date Cumulatwo

11. Hoars in Reporting Peilod 744 0 3.623 0 148.296 0

12. Number of Hours Reactor Was Critical 713.4 3.492.6 113.094.1 13 Reactor Reserve Shutdown Hours Q_Q., 00 00

14. Hours Generator On-Une 705.5 3 492.1._ 111.403.7.

15. Unit Reserve Shutdown Hours 0.0 00 00 t6 Gross Thermal Energy Generated (MWH) 1.604.040.0 0 8m2Q,971Q 226.623.100 0

17. Gross Electric Energy Generated (MWH) 535.298 0 2688.0080 73.298.098 Q 18 Not Electric Energy Generated (MWH) 520.511.0 2.606.320 0 70.732.900 0 l

19. Unit Service Factor 94 8 95.6 75 1

20. Unit Availability Factor __ 94.8 9R 75.1

21. Unit Capacity Factor (Using MDC Net) 91.6 94 2 62.4 .

22. - Unit Capacity Factor (Vaing DER Net) 89 9 92 5_ C1,3

23. Unit Forced Outage Rate 0.0 00 46 24; Shutdown Scheduled Over Next 6 Months (Type, Date, and Duration oi Each):

Refuelina and Maintenance Outaae 14. scheduled October 1991. S week duration.

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25. If Shut Down At End of Report Period, Estimated Date of Startup: N/A 26 Units ;n Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICAUTY INITIAL ELECTRICITY

- COMMERCIAL OPERATION i

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