ML19320A973

Monthly Operating Rept for June 1980

ML19320A973
Person / Time
Site:	Cooper
Issue date:	07/01/1980
From:	Ballinger P NEBRASKA PUBLIC POWER DISTRICT
To:
Shared Package
ML19320A971	List: ML19320A970 ML19320A973
References
NUDOCS 8007080395
Download: ML19320A973 (9)

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l OPERATING DATA REPORT i DOCKET NO. 050-298 DATE July 1. 1980 COMPLETED BY P. L. Ballinger TELEPHONE 402-825-3811 OPERATING STATUS Cooper Nuclear Station Notes

1. Unit Name:

2. Reporting Penod. June 1980

3. Licensed Thermal Power (MWt): 2381

4. Nameplate Rating (Gross MWe): 836 l S. Design Electrical Rating (Net MWe): 778 '

6. Mhan Dependable Capacity (Gross MWe): 660

7. Max %um Dependable Capacity (Net MWe): ^"

8. If Cha.w Occur in Capacity Ratings (items Number 3 Through 7) Since Last Report. Give Reasons:

Turbin tnodifications to remove cracked turbine discs and to replace turbine blades and discs with pressure controlling baffle plates resulted in reduced generating capacity

9. Power Level To Which Restricted,if Any (Net MWe): None

10. Reasons For Restrictions.lf Any: None This Month Yr to.Date Cumulative i1. Hours la Reporting Period 720.0 4.367.0 52.608.0

12. Number Of Hon Reactor Was Critical 658.3 2,105.3 43,342.6

13. Reactor Reserve 2,hutdown Hours 0.0 o,o- -

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14. Hours Generator On-Line 616.7 2.054.4 42.530.0

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1 911,nAA n go qa g.,_ nn A71 a1nA

17. Gross Electrical Energy Generated (MWH) 329.828.0 ._. 1.34. _ .3.d 25.886.871.0

18. Net Electrical Energy Generated (MWH) 315,966.0 1,297 ;94.0 24,955,371.0

19. Unit Service Factor 85 1 _ 47.0 80.8

20. Unit Availability Factor 85.7 47.0 80.8

21. Unit Capacity Factor (Using MDC Net) 69.1 _

46.8 74.7

22. Unit Capacity Factor (Using DER Net) 56.4 38,2 61.0

23. Unit Forced Outage Rate 0.9 1.4 4.4

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

None

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

26. Units in Test Status iPrior to Commercial Operation): Ferecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION 800708037b a- com

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

050-298 UillT Cooper Nuclear Station DATE July 1, 1980 COMPLETED BY P. L. Ballinner TELEPHONE 402-825-3811 MONTH 3"=

DAY AVERAGE DAILY POWER LEVEL DAY .tVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 1 0 37 575 2 n 18 555 3

0 19 546 4 3 20 547 5

37 21 541 6 W 22 374 7 324 23 500 8 355 24 529 9 443 25 621 10 547 26 626 11 585 27 621 12 559 23 615 13 566 -

29 59R 14 566 10 601 15 553 _ 3g ___

16 556 r

INS 1 RUCTIONS On this format. list the average dady unit power levelin MWe Net for each day in the reporting month. Compute to the nearest whole megawatt.

I' (9/77) i l

DOCKETNO.

050-298 UNITSilU1 DOWNS AND POWER REDUCTIONS UNIT NAME ('nnpor helanr Station DATE July 1, 1980 COMPLETED BY .P. I. Ballinger REPORT MONTil June TELEPHONE 402 825-3811

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, .! E 3g .h Yk Licensee ,E r, b.

k Cause & Connective Action to No. Daic g 3g jg5 Event u? 3

'E U Pievent Recurrence

• $E 5 j5g Report #

fU 6

55.8 C 2 NA NA NA 1980 Refueling and Maintenance 80-5 800301 S Outage 80-6 800604 F 5.9 A 3 NA NA NA Reactor scram from low reactor water level following reactor feedwater pump overspeed trip. Malfunctioning reactor feed pump controller problem was corrected and reactor returned to operation.

H NA NA NA NA Power was reduced to allow adjustment 80-7 800622 S NA of the control rod pattern.

3 4 I 2 Method: Edibit G -Instmetions F: Forted Reason:

for Picpa ation of Data A-Equipment Failure (Explain) 1-Manual S: E 'uted Eni y Sheets fo 1.icensee B-Maintenance of Test 2-Manual Scram.

3 Automatic Scram. Event Repost ILER) File INtlRIG C-Refueling D-Regulatory Restriction 4-Other (Explain) 0161)

E-Operator Training & Ucense Exam; nation 5

F-Administrative .

Exhibit I - Same Source G-Operational Error (Explain) 19/77) Il-Other (Explain)

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COOPER NUCL' EAR STATION OPERATIONS NARRATIVE .

JUNE 1980 Startup for Cycle 6 began on June 3, 1980 and first reactor criticality occurred at 0748 hours0.00866 days <br />0.208 hours <br />0.00124 weeks <br />2.84614e-4 months <br />. Maintenance work on the turbine resulted in removal of 12 rows of low pressure turbine blades. Pressure controlling baffle plates were installed in the turbine to allow continued operation until replacement turbine rotors can be obtained from manufacturer. A reduced electrical generating capacity of approximately 140 MWe has resulted from removal of the 12 rows of turbine blades.

Reactor scram occurred at 2349 hours0.0272 days <br />0.653 hours <br />0.00388 weeks <br />8.937945e-4 months <br />, June 4,1980 resulting from reactor low water level scram signal. Reactor feed pump tripped during the main turbine overspeed trip testing. A malfunctioning RFP con-troller allowed the feed pump turbine speed to increase to trip level.

Feedwater flow was lost to the reactor resulting in a low water level scram. Control problem with feed pump corrected and returned reactor to criticality at 0542 hours0.00627 days <br />0.151 hours <br />8.96164e-4 weeks <br />2.06231e-4 months <br />, June 5,1980.

Plant operated the remainder of June with no unscheduled power reduction and with only one scheduled power reduction on June 22 to allow for adjustment of the control rod pattern.

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