ML20215D101

Monthly Operating Rept for May 1987

ML20215D101
Person / Time
Site:	Cooper
Issue date:	05/31/1987
From:	Horn G, Jacqueline Thompson OMAHA PUBLIC POWER DISTRICT
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
CNSS878190, NUDOCS 8706180378
Download: ML20215D101 (5)

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-Document Control Desk U.S. Nuclear Regulatory Commission Washington. D.C..

20555

Subject:

Monthly Operation Status Report for May, 1987' Docket No. 50-298 Gentlemen:

' Enclosed for'your information and use is the-Cooper Nuclear Sta' tion Monthly.

Operating Status Report for May, 1987. The report includes Operating Status, Average Daily Unit-Power Level, Unit Shutdown. Data, and'a Narrative Summary of-Operating Experience.

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

Sin rel,

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Horn 1

Divfsion Manager of Nuclear Operationa

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GRH:drf Enclosure

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G. D. Watson w/ enc.

R. D. Martin w/ enc.

i 8706180378 870531 f?

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OPERATING DATA REPORT DOCKET NO. 050-0298 D/,TE 5-8-87 COMPLETED 11Y J.

E. Thompson TELEPilONE (402) 825-3811 OPERATING STATUS Notes

1. Unit Name:

Cooper Nuclear Station

2. Reporting Period:

May. 1987 2381

3. Licensed Thermal Power (MWI):

836

=

4. Nameplate Rating (Gross MWe):

778 S. Design Electrical Rating (Net MWe):

787

6. Maximum Dependable Capacity (Gross MWe):

764

7. Maximum Dependable 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,1f Any:

This Month Yr,-t o.Da t e Cumulative 744.0 3,623.0 113,232.0 i1. Ilours in Reporting Period 559.1 3,287.2 84.870.4

12. Number Of liours Reactor Was Critical;

13. Reactor Reserve Shutdown Hours 0.0 0.0 0.0

14. Ilours Generator On.Line "

511.5 3,155.4 83,407.4

15. Unit Reserve Shutdown flours

.0.0

_0. 0 0.0

16. Gross Thermal Energy Generated (MWil) 1.028,220.5 6,190,276.5

.163,657,620.5

17. Gross Electrical Energy Generated (MWil) 339,149.0 2,073,483.0 52,418,491.0 327,694.0-1,998,500.0 50,504,'998.0

18. Net Electrical Energy Generuted (MWil)

19. Unit Service Factor 68.8 87.1 73.7 l

68.8 87.I 73.7

{

20. Unit Availability Factor

21. Unit Capacity Factor (Using MDC Net) 57.7 72.2 58.4 56.6 70.9 57.3

22. Unit Capacity Factor (Using DER Net) i 31.3 9.7 4.9

23. Unit Forced Outage Rate

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

J

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

26. Units in Test Status IPrior to Commercial Operation):

Forecast Achieved INITIA L CRITICA LiTY INITIAL ELECTRICITY COMMEltCI A L OPER ATION to/77) e%

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AVERAGE DAILY UNIT POWER LEVEL -

DOCKET NO.-

050-0298 UNIT. CNS 6'-8-87 DATE J. E. Thompson Y

COMPLETED BY

'l TELEPilONE (402)825-3811 4

MON 1y May, 1987 DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe. Net)

(MWe. Net) -

1 699 36 37 2

699' 34 18 3

542 0

39 4

675 20 0

5 732

'O 21 6

'698 22 0

7 607 0

23 696 0

8 24

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695 9

25 0

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26 11 704 3 34' '.

27

.12 701 580 28 13 702 588 29 l

14 702 582 30 i

15 699 561

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694 16

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.j INSTRUCTIONS i

On this forrnat. list the average daily unit power level in MWe. Net for each day in the reporting month. Compute to -

the nearest whole megawatt.

(9/77) '

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l Operations Narrative Cooper Nuclear Station May, 1987 Load following operation continued into the month of May.

Power was decreased 1

to approximately 63% on May 3, in order to complete a control rod exchange and to accommodate reduced load demand.

On May 17, an automatic reactor scram occurred during turbine trip testing.

Due to operator error, a trip signal intended as a test actually tripped the turbine. The reactor was started up on May 18.

Due to high conductivity of the reactor water, the reactor was manually scrammed at 2257. One condenser a

tube leak was plugged and startup began on May 21.

On May 22, the reactor was shut down due to continued high conductivity of the condensate.

A more thorough investigation revealed three additional leaking tubes in the condenser. The tubes were plugged and the reactor started up on May 26.

The plant was returned to normal operation on May 28.

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