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

v . e OPERATING DATA REPORT DOCKET NO. 050-298 DATE 9-8-82 COMPLETED BY P. L. Ballinger TELEPHONE 402-825-3811 OPERATING STATUS Cooper Nuclear Station Notes

1. Unit Name:

August 1982

2. Reporting Period:

2381

3. Licensed Thermal Power (MWt):

836

4. Nameplate Rating (Gross MWe):

5. Design Electrical Rating (Net MWe): 778

6. Maximum Dependable Capacity (Gross MWe):

787 764

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 i1. Hours in Reporting Period 744.0 5,831.0 71,616.0

12. Number Of Hours Reactor Was Critical 716.5 4,600.6 58,487.0 0.0 0.0 - -

' O.0

13. Reactor Reserve Shutdown Hours

14. Hours Generator On-Line 700.9 4,550.2 57,507.7 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

, 19. Unit Service Factor 94.2 78.0 80.3

20. Unit Availability Factor 94.2 78.0 80.3

21. Unit Capacity Factor (Using MDC Net! 83.6 71.0 63.0 I

22. Unit Capacity Factor (Using DER Net) 82.1 69.8 61.9 I 23. Unit Forced Outage Rate 5.8 3.0 3.9

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 D 0 ("/ W 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 22 605 752 753

_7 23 8 751 24 745 9 735 25 703 10 700 26 711 g3 698 27 754 12 705 ;g 727 13 721 29 725 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 UNIT N AME C Per Nuclear Statios 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 mO pu Action to Prevent Recurrence H jE 5 Ji di cg Report e o U

Q N/A N/A N/a A failure in the turbine control sys-82-7 820817 F 43.1 A 3 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.

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

5 F Administrative G Operational Error (Explain) Exhibit I - Same Source

(?/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.