ML20065G926

Monthly Operating Rept for Mar 1993 for Cooper Nuclear Station

ML20065G926
Person / Time
Site:	Cooper
Issue date:	03/31/1994
From:	Dedic J, Gardner R NEBRASKA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CNSS948587, NUDOCS 9404130365
Download: ML20065G926 (5)

Text

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• COOPER NUCLE AA STATON P.o. BOX 96. BROWNVILLE, NEBRASKA 68321 Nebraska Public Power District _ _

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CNSS948587 April 8, 1994 Document Control Desk U. S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Monthly Operating Status Report for March, Docket No. 50-298.

Gentlemen:

Enclosed for your information and use is the Cooper Nuclear Station Monthly Operating Status Report for March 1994. The report includes Operating Status,

. Average Daily Unit Power Level, Unit Shutdown Data and a Narrative Summary of

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

i Sincerely, R. L. Gardner l Plant Manager RLG:JRD: dis l Enclosures l

cc: G. D. Watson L. J. Callan l

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l40004 9404130365 940331 PDR

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R ADOCK 05000298 f l {i j PDR .

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OPERATING DATA REPORT DOCKET NO, 050-0298

. UNIT CNS DATE April 8. 1994 OPERATING STATUS TELEPHONE (402) 825-5396

1. Unit Nam 6. COODer Nuclear Station Notes

3. Reporting Period: March 1994

3. Ucensed Thermal Power (MWt): 2381

4. Nameplate Rating (Gross MWe): 836

5. Design Electrical Rating (Not MWe): 778

6. Maximum Dependable Capacity (Gross MWe): 787

7. Maximum Dependable Capacity (Not MWe): 764

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report, Give Reasons:

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[ 0. Power Level To Which Restricted, if Any (Not MWe):

10. Reasons For Restriction, if Any:

l This Month Yr.-to-Date Cumulative

]

11. Hours in Reporting Period 744.0 2.160.0 173.137.0 '

12. Number of Hours Reactor Was Critical 343.4 1.759.4 131.873.2

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Hours Generator On-Une 300,0 1.716.0 129.962.3

15. Unit Reserve Shutdown Hours 0.0 0.0 - 0.0

16. Gross Thermal Energy Generated (MWH) 541.152.0 3.849.168.0 268.207.060.0

17. Gross Electric Energy Generated (MWH) 173.806.0 1.276.995.0 87.098.893.0

18. Net Electric Energy Generated (MWH) 167.887.0 1.237.289.0 84.108.467.0

10. Unit Service Factor 40.3 79.4 75.1

20. Unit Availability Factor 40.3 79.4 75.1 1

21. Unit Capacity Factor (Using MDC Net) 29.5 75.0 63.6

22. Unit Capacity Factor (Using DER Net) 29A. 73.6 62.4

23. Unit Forced Outage Rate 59.7 20.6 4.5

24. Shutdown Scheduled Over Next 6 Months (Type, Date, and Duration of Each):

l 25. If Shut Down At End of Report Period, Estimated Date of Startup:

26. Units in Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICAlfTY INITIAL ELECTRICITY COMMERCIAL OPERATION i

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 050-0298 UNIT CNS DATE ADril 8, 1994 TELEPHONE (402) 825-5396 MONTH March 1994 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 742 17 0-2 551 18 0 3 0 19 0 4 0 20 0 5 0 21 0 1

1 6 0 22 0 7 0 23 0 8 0 24 62 9 0 25 526 10 0 26 709 11 0 27 759 12 0 28 771 r 13 93 29 770 14 179 30 769 15 144 31 769 16 152 INSTRUCTIONS 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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UNIT SHUTDOWNS AND POWER REDUCTIONS ,

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DOCKET NO. 050 &298 '_

UNIT NAME Cooper Nuclear Station DATE April 8.1994 =

, COMPLETED BY J. R. Dedic' TELEPHONE (402) 825-5396 REPORT MONTH March 1994 ,

i Method Of Licensee Cause & Corrective Duration Shutting Event System' Cornponent' Action to 2 Prevent Recurrence No. Date Type' (Hours) Reason Down Reactor' Report Code Code 94-3 3/2/94 F 256.5 A 3 94 G4 JJ RJX Partial closure of turbine governor valves due to turbine control sysem mat'uncbon retutting in a reactor high flux and subsequent automatic  !

scram. Replaced failed power supplies.

94-4 3/16/94 F 187.5 A 2 N/A N/A N/A Vatve RHR-MO-27A failed surveillance testing.

Repaired RHR-MO-27A.  !

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1 F: Fo ced 2 Reason: 3 Method: 4 Exhibit G - Instructions for S: Scheduled A- Equipment Failure (Explain) 1 - Manual Preparation of Data Entry .

B - Maintenance or Test 2 - Manual Scram Sheets for tJcensee Event C - Refueling 3 - Automatic Scram Report (LER) File (NUREG0161)

D - Regulatory Restriction 4 - Continued E - Operator Training & License Examination 5 - Reduced Load 5 Exhicit 1- Same Source F- Administrative 6 - Other i G - Operational Error (Explain)

H - Other (Explain) i 1

OPERATIONS NARRATIVE COOPER NUCLEAR STATION March 1994 Cooper Station operated at 100 percent for the month of March with the following exceptions:

1. March 1 - Derate to perform RPS surveillance testing.

2. March 2 Automatic scram due to high neutron flux caused by partial closure of turbine governor valves resulting from turbine -

control system malfunction.

3. March 17 Manual scram to repair valve RHR-MO-27A.

A unit capacity factor of 29.5 percent (MDC Net) was attained for the month of March.

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