ML19261D483

Monthly Operating Rept for May 1979

ML19261D483
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	06/12/1979
From:	Sjogren R VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML19261D478	List: ML19261D477 ML19261D483
References
NUDOCS 7906190311
Download: ML19261D483 (6)

Text

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ERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 79-05 FOR THE MONTH OF MAY, 1979 2307 294 7906190311

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OPERATING DATA REPORT DOCKET NO.

50-271 DATE 790612 COh!PLETED BY R M-6Jogren TELEPHONE (617) 366-9011 X2281 OPERATING ST ATUS

1. Unit Name:

Vermont Yankee Notes

2. Reporting Period:

May, 1979

3. Licensed Thermal Power 431Wt):

1593 540

4. Nameplate Rating (Gross 31We):

5. Design Electrical Rating iNet 31We): 514 fe en cvele\\504 (closed cycle)

6..\\laximum Dependable Capacity (Gross i!We):

535 504

7. Sf aximum Dependable Capacity (Net alwe):

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

9. Power Lesel To which Restricted. If Any (Net 31We):

10. Reasons For Restrictions. If Any:

i This Stor.th Yr..to.Date Cumulative

11. Hours In Reporting Period 744 3,623

'58,658.75

12. Number Of Hoitrs Reactor Was Critical 744 3,215.3 47,105

13. Reactor Resene Shutdown Hours 0

0 0

14. Hours Generator 0n.Line 744 3.201.8 45,334.8

15. Unit Reserve Shutdown Hours 0

0 0

16. Gross Thermal Energy Generated (.\\lWH) 1,173.157 4,958,861 63,345,679

17. Gross Electrical Energy Generated #5thH) 393,080 1,687,312 21,026,780

18. Net E!ectrical Energy Generated (31WH) 371,880 1,614,315 19,934,038

19. Unit Senice Factor 100 88.4

/7.3 100 88.4 77.3

20. Unit Availability Factor

21. Unit Capacity Factor (Using.\\tDC Net) 99.2 88.4 e7.4

22. Unit Capacity Factor (Using DER Net) 97.2 86.7 66.1 0

0 e.d

23. Unit Forced Outage Rate

24. Shutdowns Scheduled Over Nest 6 Stonths (Type. Date.and Duration of Eacht:

Refueling Sectember 22, 1979.

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

26. Units In Test Status iPrior to Commercial Operationi:

Forecast Achieved INITIA L CRITICA LITY INITIA L ELECTRICITY C0\\l.\\lERCIAL OPERATION 2307 295

AVERAGE DAILY UNIT POWER LEVEL 30-271 DOCKET NO.

Ver nt Yankee L31T 790612 D A TE R. M. Sjogren CO\\fPLETED BY TELEPHONE (617) 366-9011 X22el NIONTH _.M y, 1979 DAY A\\ r ' sGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL L\\lWe Net) i.stwe.Ner; 524 495 i

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524 494 2

33 523 492 3

39 4

20 480 5

523 488 21 509 6

92 7

522 493

3 522 3

24 492 519 9

25 420 517 483 10

,6 518 11 37 494 515 491 1:

,3 485 492 33

,9 30 491 14 494 493 15 3:

493 16 493 INSTRUCTIONS On this format,!ist the average da:!y unit power !esel in.\\1We Net for each day in the reporting month. Compute to the nearest wnele me;2 watt.

WITT) 2307 296

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50-271 UNIT SilOIDOWNS AND POWl:lt ItEDUCIlONS DOCEET NO.

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(See narrative operations summary)

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s DOCKET NO.

50-271 UNIT Vermont Yankee 790612 DATE COMPLETED 3Y R. M. Sjogren TELEPHONE (617) 366-9011 X2281 REPORT MONTH May, 1979 SU'BiARY OF OPERATING EXPERIENCES Highlights:

Vermont Yankee operated at 99.0% of rated thermal power for the month of May, 1979. Gross electrical generation for the month was 393,080 MWHe.

Ooerations Su==ary:

The following is a chronological description of plant operations including other pertinent items of interest for the month:

5-1 At the beginning of the report period, the plant was operating at 99% of rated thermal power.

5-13 Closed Cycle operation commenced at 0145 hours0.00168 days <br />0.0403 hours <br />2.397487e-4 weeks <br />5.51725e-5 months <br />.

5-25 'B' Recire. Pump tripped at 1425 hours0.0165 days <br />0.396 hours <br />0.00236 weeks <br />5.422125e-4 months <br /> following a malfunction of a MC Set Lube Oil Pump starter.

'A' Recire. Pump was reduced to 50% speed and power was reduced to 45%.

Recire. MG Set was restored at 1840 hours0.0213 days <br />0.511 hours <br />0.00304 weeks <br />7.0012e-4 months <br />.

Power increase to 90% commenced at 2058 hours0.0238 days <br />0.572 hours <br />0.0034 weeks <br />7.83069e-4 months <br /> following turbine surveillance at 80%.

5-31 At the conclusion of the report period, the plant was operating at 99% of rated thermal power.

2307 299

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