ML20237H425

Monthly Operating Rept for Jul 1987

ML20237H425
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/31/1987
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC
References
VYV-87-161, NUDOCS 8708170206
Download: ML20237H425 (6)

Text

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l VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 87-07 FOR THE MONTH OF JULY, 1987 l

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pN 8708170206 870731 PDR ADOCK 05000271 R

PDR

i OPERATING DATA REPORT DOCKET NO.

50-271 DATE 870810 COMPLETED BY -G.A. Wallin TELEPHONE (802) 257-7711 OPERATING STATUS Notes:

1.

Unit Name:

Vermont Yankee 2.

Reporting Period:

July 3.

Licensed Thermal Power (MWt):

1593 4.

Nameplate Rating (Gross MWe):

540 5.

Design Electrical Rating (Net MWe):514(oc7 504(cc) 6.

Maximum Dependable Capacity (Gross MWe):

535 7.

Maximum Dependable Capacity (Net MWe):

504 i

8.

If changes occur in capacity ratings (Items Number 3 through 7) since last report, give reasons:

N/A j

9.

Power leve to which restricted, if any (Net MWe): N/A l

10. Reasons for restrictions, if any:

N/A 1

l This month Yr-to-Date Cumulative l

11. Hours in Reporting Period 744.00 5087.00

12. Number of Hours Reactor was Critical 744.00 5087.00 102557.73 j

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00 1

14. Hours Generator On-Line 744.00 5081.68 100060.37

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15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1016438.00 7747356.00 146422996.50

17. Gross Electrical Energy Generated (MWH) 331715.00 2598230.00 48727064.00

18. Net Electrical Energy Generated (MWH) 309114.00 2471387.00 46230063.00

19. Unit Service Factor 100.00 99.90 76.82

20. Unit Availability Factor 100.00 99.90 76.82

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21, Unit Capacity Factor (using MDC Net) 82.44 96.39 70.42 l

22. Unit Capacity Factor (using DER Net) 80.83 94.52 69.05 i

23. Unit Forced Outage Rate 0.00 0.10 6.38 l

24. Shutdowns scheduled over next 6 months (Type, Date and Duration of Each):

1987 Refueling Outage scheduled to begin on August 8,1987 and continue through October 2, 1987.

25. If shut down at end of report period, estimated date of startup:

N/A

26. Units in Test Status (prior to commercial operation): N/A Forecast Achieved INITIAL CRITICALITY VYDPF 0411.01 INITIAL ELECTRICITY Original COMMERCIAL OPERATION I

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-271 UNIT vermont Yankee DATE 870810 l

COMPLETED BY G.A. Wallin l

TELEPHONE (802) 257-7711 i

MONTH July DAY.

AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWo-Net) 1 447 17 418 i

2 445 18 412 3

443 19 406 l

4 441 20 411 l

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441 21 408 l

6 433 22 403 l

7 431 23 402 8

431 24 399 9

426 25 394 10 423 26 393 11 420 27 399 I

12 410 28 399 l

13 388 29 399 i

i 14 423 30 397 15 420 31 396 16 420 INSTRUCTIONS:

On this format, list the average daily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

VYDPF 0411.02 Original

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DOCKET NO.

50-271 UNIT Vermont Yankee DATE 870810 COMPLETED BY G. A. Wallin TELEPHONE (802) 257-7711 REPORT MONTH July

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 85.8% of rated thermal power for the month.

5 Gross electrical generation was 331,715 MWH or 82.6% of design e

electrical capacity.

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

At the beginning of the reporting period the plant was operating at 89.6% of rated thermal power.

870712 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, decreased power to 80% for Control Rod Drive and Turbine Bypass Valve testing.

(See Unit Shutdowns and Power Reductions.)

870712 At 0115 hours0.00133 days <br />0.0319 hours <br />1.901455e-4 weeks <br />4.37575e-5 months <br />, completed Control Rod Drive and Turbine Bypass Valve testing. A return to full power was initiated.

870713 At 1515 hours0.0175 days <br />0.421 hours <br />0.0025 weeks <br />5.764575e-4 months <br />,' decreased power to 53% via recirculation flow to remove the "A recirc pump from service due to a brush wear problem.

(See Unit Shutdowns and Power Reductions.)

870713 At 1820 hours0.0211 days <br />0.506 hours <br />0.00301 weeks <br />6.9251e-4 months <br />, started the " A" recirculation pump after brush repairs were made and a return to full power was initiated.

870719 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, decreased power to 80% for Control Rod Drive and Turbine surveillance testing.

(See Unit Shutdowns and Power Reductions.)

870719 At 0120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br />, completed Control Rod Drive and Turbine surveillance testing. A return to full power was initiated.

870726 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, decreased power to 79% for Control Rod Drive and Turbine surveillance testing.

(See Unit Shutdowns and Power Reductions.)

l 870726 At 0105 hours0.00122 days <br />0.0292 hours <br />1.736111e-4 weeks <br />3.99525e-5 months <br />, completed Control Rod Drive and Turbine surveillance testing. A return to full power was initiated.

At the end of the reporting period, the p.ent was operating at 82.3% of rated thermal power and continuing to coast down.

VYDPF 0411.04 Original

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VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 l

GOVERNOR HUNT ROAD l

VERNON, VERMONT 05354 l

VYV 87-161 August 10,.1987 l

t U. S. Nuclear Regulatory Commission Director, Office of Management Information l

and Program Control Washington, D. C.

20555 i

Dear Sir:

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Submitted herewith is the Monthly Statistical Report for the Vermont Yankee i

Nuclear Power Station for the month of July,1987.

l Very truly yours, VERMONT YANKEE NUCLEAR POWER CORP.

1

,V Warren P. Murphy Vice President and Manager of Operations WPM / DAW /gmf:MSR1.1A4SR I

VYDPF 0411 l

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