ML20050C821

Monthly Operating Repts for Aug 1981

ML20050C821
Person / Time
Site:	Prairie Island
Issue date:	09/01/1981
From:	Hunstad A NORTHERN STATES POWER CO.
To:
Shared Package
ML20050C817	List: ML20050C816 ML20050C821
References
NUDOCS 8204090383
Download: ML20050C821 (8)

Text

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! r'~ NARRATIVE SLNY OF OPERATING EXPERIENCE t

DOCKET NO. 50- 282 UNIT Prairie Island No. 1 i DATE 810901 COMPLETED BY A A Hunstad j TELEPHONE 612-388- 1121 i

MONTH August 1981 k #

. The unit was. base loaded this month. At 1946 on August 31st, a .

S control card in the turbine E-H system failed, closing the control n valves, and causing a reactor trip from low steam generator level.

I " Unit I had been on line since November 11, 1980, a run of 293 days.

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82040903ED B10914 PDR ADOCK 05000282 PDR R

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DAILY UNIT P0k'ER OUTPUT

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DOCKET NO. 50- 282 UNIT]'rairie Island No. I DATE _ 810901 COMPLETED BY A A Hunstad TELEPHONE 612-388- 1121 MONT11 August 1981 DA AVERAGE LOAD FNe-Net DAY AVERAGE LOAD iMe-Net

> 1 431 17 496

. 2 494 18 494

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3 496 19 496 e .

4 498 20 497

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5 497 21 497 6 497 22 500 7 497 23 496 8 495 24 498 9 496 25 498 10 495 26 498 11 496 27 499 497 12 28 498 _

13 497 29 499 14 497 30 497 15 487 31 405 16 425 Average loads above 503 !Ne-Net are due to cooler condenser circulating water.

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OPERATING DATA REPORT l

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b DOCKET NO 50- 282 i

DATE 810901 3

. COMPLETED BY A. A. Hunstad OPERATING STATUS TELEPHONE 612-388-1121 l

i 1. Unit Name: Prairie Island No. 1 --

2. Reporting Period: **

August 1981

3. Licensed Thermal Power (MWt): 1650 i

t t 4. . Nameplate Rating (Gross MWe): 593 4

5. Design Electrical Rating'(Net MWe): 530 I

6. Maximum Dependable Capacity (Gross MWe): 534 503 g 7. Maximum Dependable Capacity (Net MWe):

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

o m Give Reason:

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

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, 10. Reasons for Restrictions, If Any:

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I This Month Yr-To-Date Cumulative

11. Hours In Reporting Period 744 5831 67583

12. Number Of Hours Reactor Was Critical 739.8 5826.8 53993.9

13. Reactor Reserve Shutdown Hours 4.2 4.2 5542.3 4

14. Hours Generator on Line 739.8 5826.8 52817.4

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross Thermal Energy Generated (MWH) 1203906 9485388 82206069

17. Gross Electrical Energy Generated (MWH) 387640 3107720 26589230

18. Net Electrical Energy Generated (MWH) 363933 2915188 24860795

19. Unit Service Factor 99.4 99.9 78.2

20. Unit Availability Factor 99.4 99.9 78.2

21. Unit Capacity Factor (Using MDC Net) 97.2 99.4 73.1 j 22. Unit Capacity Factor (Using DER Net) 92.3 94.3 69.4

23. Unit Forced Outage Rate 0.6 0.0 11.0 i 24 Shutdowns Scheduled Over Next 12 Months (Type, Date and Duration of Each):

Refueling September 19, 1981 5-weeks

25. If Shut Down at End Of Report Period, Estimated Date of Startup: gingot ,

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50- 282 REPORT MONTil August 1981 UNIT NAME Prairie Island No. 1 DATE. 810901 COMPLETED BY A. A. Ilunstad TELEP110NF' 612-388-1121

-i c n 4. d'u Licensee n .: u Cause & Corrective Date $. 3 17 5 58 Event 3 4l $c Action to l N N$ $ 3U$ Repor t # $, O $ 4l Prevent Recurrence

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ci g ,810831 F 4.2 A 3 NA NA NA Trip when a capacitor on a m turbine E-Il control card failed M and turbine control valves c1psed .

[ Reactor trip came from low steam generator level.

I F: Forced Reason Method: Exhibit G-In-S: Scheduled A-Equipment Failure (Explain) 1-Manual structions for B-Maintenance or Test 2-Manual Trip Preparation of C-Refueling 3-Automatic Trip Data Entry Sheets D-Regulatory Restriction 4-Other (Explain) for Licensee Event E-Operator Training & License Examination Rcport (LER) File F-Administrative (NUREG-0161)

G-Operational Error (Explain) ll-Other (Explain 5 Exhibit 1 - Same Source

f NARRATIVE SlHMARY OF OPERATING EXPERIENCE d

LOCKET NO. 50- 306 UNIT Prairie Island No.7 DATE 810901 COMPLETED BY A A Hunstad TELEPHONE 612-388- 1121 MONTH Aucust 1981

$ The unit was in Load Follow operation this month; no shutdowns.

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DAILY UNIT P0'JER OUTPUT

, DOCKET NO. 50- 306 UNIT Prairie Island No. 2 DATE 810901 COMPLETED BY A A Hunstad TELEPHONE 612-388- 1121 MONTH August 1981 DAY AVERACE LOAD M'Je-Ne t DAY AVERAGE LOAD M'Je-Net s

1 494 17 x

{ 492

- 2 493 18 496

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3 , 493 19 497 G

{ 4 495 20 496 5 494 21 497 6 494 22 493 i

7 495 23 498 8 446 24 494 9 463 25 496 10 439 26 495 11 492 27 496 12 491 28 496 13 492 29 496 14 496 30 447 15 495 31 497 16 496 Average loads above 500 trJe-Net are due to cooler condenser circulating water.

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OPERATING DATA REPORT 1

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DOCKET NO 50- 306 DATE 510901 COMPLETED BY A. A. Hunstad OPERATING STATUS TELEPHONE 612-388-1121

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l. Unit Name: Prairie Island No. 2 ,

2. Reporting Period: August 1981 Notes  !

3. Licensed Thermal Power (MWt)

1650

4. Nameplate Rating (Gross MWe): 593

5. Design Electrical Rating (Net MWe): 530

6. Maximum Dependable Capacity (Gross MWe): 531 g 7. Maximum Dependable Capacity (Net MWe): 500 g 8. If Changes occur in Capacit.y Ratings (Items Number 3 Through 7) Since Last Report:

$ Give Reason:

f [ 9. Power Level To Which-Restricted, If Any (Net MWe):

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10. Reasons for Restrictions, If Any:

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This Month Yr-To-Date Cuaulative

11. Hours In Reporting Period 744 5831 98701

12. Number Of Hours Reactor Was Critical 744.0 3711 7 50093.5_

-13. Reactor Reserve Shutdown Hours 0.0 R.I 1516.1

14. Hours Generator On Line 744.0 . 3666.3 69112.2.  ;

l 15. Unit Reserve Shutdown Hours 0.0_ 0.0 0 . D_

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16. Gross Thermal Energy Generated (MWH) 1207705 5871934 76970924___

17. Gross Electrical Energy Generated (MWH) 387440 1895330 __2465_4220___

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18. Net Electrical Energy Generated (MWH) ___363712 1771274 __23029177

, 19. Unit Service Factor 100.0 62.9 83,9.

20. Unit Availability Factor 100.0_ 62.9 83.9_

21. Unit Capacity Factor (Using MDC Net) 97.8 6 QiH_. 18. 6.

22. Unit Capacity Factor (Using DER Net) 92m1_ 57.3 14.1

23. Unit Forced Outage Rate 0.0 22.3 5.9

! 24. Shutdowns Scheduled Over Next 12 Months (Type, Date and Duration of Each):

)

Refueling, Spring 1982 6 weeks _.

25. If Shut Down at End Of Report Period, Estimated Date of Startup: ____,

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