ML20065T125

Monthly Operating Rept for Aug 1982

ML20065T125
Person / Time
Site:	Cooper
Issue date:	09/08/1982
From:	Ballinger P NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML20065T116	List: ML20065T114 ML20065T125
References
NUDOCS 8211020223
Download: ML20065T125 (4)

Text

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OPERATING DATA REPORT DOCKET NO.

050-298 DATE 9-8-82 COMPLETED BY P.

L. Ballinger TELEPHONE 402-825-3811 OPERATING STATUS Notes Cooper Nuclear Station

1. Unit Name:

August 1982

2. Reporting Period:

2381

3. Licensed Thermal Power (MWt):

836

4. Nameplate Rating (Gross MWe):

778

5. Design Electrical Rating (Net MWe):

787

6. Maximum Dependable Capacity (Gross MWe):

764

7. Maximum Deperviable Capacity (Net MWe):

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

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

10. Reasons For Restrictions. If Any:

This Month Yr..to.Date Cumulative 744.0 5,831.0 71,616.0 i1. Hours in Reporting Period 716.5 4,600.6 58,487.0

12. Number Of Hours Reactor Was Critical 0.0 0.0 -

' O.0

13. Reactor Reserve Shutdown Hours 700.9 4,550.2 57,507.7

14. Hours Generator On-Line 0.0 0.0 0.0

15. Unit Reserve Shutdown Hours

16. Gross Thermal Energy Generated (MWH) 1,503,024.0 9,868,200.0 113,556,678.0

17. Gross Electrical Energy Generated (MWH) 491,847.0,_,

3,269,131.0 35,749,918.0

18. Net Electrical Energy Generated (MWH) 475,188.0 3,164,680.0 34,462,058.0 94.2 78.0 80.3

19. Unit Service Factor 94.2 78.0 80.3

20. Unit Availability Factor 83.6 71.0 63.0

21. Unit Capacity Factor (Using MDC Net!

82.1 69.8 61.9 I

22. Unit Capacity Factor (Using DER Net) 5.8 3.0 3.9 I

23. Unit Forced Outage Rate

24. Shutdowns Scheduled Over Next 6 Months (Type.Date.and Duration of EachI:

f

25. If Shut Down At End Of Repost Pen;od. Estimated Date oiStartup:

l

26. Units In Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION 82 1

("/ W D

0 R

v AVERAGE DAILY UNIT POWER LEVEL DOCKET No.

050-298 UNIT Cooper Nuclear Stat.

DATE 9-8-82 t

COMPLETED BY P. L. Ballinger TELEPHONE 402-825-3811 MONTH August DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 515 17 483 2

562 gg 0

3 669 19 29 4

752 20 279 5

748 21 607- -

6 750 22 605

_7 752 23 753 8

751 24 745 9

735 25 703 10 700 26 711 698 754 g3 27 705 727 12

g 721 725 13 29 14 723 30 740 15 701 33 752 16 726 INSTRUCTIONS On this format. list the average daily unit power levelin MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

(9/77) ll 4

050-298

~C DOCKET NO.

UNIT SIIUlDOWNS AND POWER REDUCTIONS C Per Nuclear Statios UNIT N AME DATE September 8, 1982 COMPLETED BY P.

I,.

Ballinger REPORT MONTil August TELEPHONE, 402-825-3811

~.

E c

5 ?

'h

$Y3 Licensee gg yn, Cause & Corrective No.

Date g

5g 4

2s5 Event p

pu Action to jE 5

Ji di c Report e mO Prevent Recurrence H

o g

U Q

82-7 820817 F

43.1 A

3 N/A N/A N/a A failure in the turbine control sys-tem caused the main steam control val-ves to close. The pressure transient caused by the control valve closure resulted in a neutron flux spike and a reactor scram. A bad circuit card was replaced in the turbine control system and plant returned to operation.

I 2

3 4

F: Forced Reason:

Method:

Exhibit G - Instructions S: Scheduled A Equipment Failure (Explain) 1-Manual for Preparation of Data Il-Maintenance of Test 2-Manual Scram.

Entry Sheets for Licensee C-Refueling 3-Automatic Scram.

Event Report (LER) Fde (NURI G-D Regulatory Restriction 4 01her (Explain) 0161)

E-Operator Training & License Examination F Administrative 5

Exhibit I - Same Source G Operational Error (Explain)

(?/77)

Il-Other (Explain)

,. ~

OPERATIONS NARRATIVE Cooper Nuclear Station August 1982 The plant operated the month of August with only one unscheduled shut-down. On August 17, a failure in the turbine control system electronic circuitry caused the main steam control valves to close. This closure caused a pressure transient in the reactor vessel and resulted in high neutron flux and a reactor scram. A circuit card in the turbine control system was found def ective and was replaced. The plant returned to operation after satisfactorily testing of the' turbine control system.