BVY-99-112, Monthly Operating Rept for Aug 1999 for Vermont Yankee.With

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Monthly Operating Rept for Aug 1999 for Vermont Yankee.With
ML20212C065
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 08/31/1999
From: Balduzzi M, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-99-112, NUDOCS 9909210125
Download: ML20212C065 (6)
v • d • e


Text

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VERMONT YANKEE NUCLEAR POWER CORPORATION P.O. Box 157, Govemor Hunt Road

@ Vemon, Vermont 053 (802) 257-7711 September 10,1999 BVY-99-ll2 United States Nuclear Regulatory Commission ATfN: Document Control Desk Washington, D.C. 20555

Reference:

(a) License No. DPR-28 (Docket No. 50-271)

In accordance with section 6.7.A.3 of the Vermont Yankee Technical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of August.1999. ,

i Sincerely, VERMONT YANKEE NUCLEAR POWER CORPORATION h $ '

j Michael A. Balduzzi F

Plant Manager cc: USNRC Region 1 Administrator I USNRC Resident Inspector- VYNPS

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USNRC Project Manager-VYNPS Vermont Department ofPublic Service 1

9909210125 99003121 '

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VERMONT YANKEI~ NUCLEAR POWER STATION MONTIILY STATISTICAL REPORT 99-08 FOR TIIE MONTII OF AUGUST 1999 4

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1 OPERATING DATA REPORT

  • DOCKET NO.50-271 DATE 990910 I COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STAT _U_S_ I
1. Unit.Name: Vermont Yankee
2. Reporting Period: August
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rating (Gross MWe): 540
5. Design Electrical Rating (Net MWe): 522
6. Maximum Dependable Capacity (Gross MWe): 535 i
7. Maximum Dependable Capacity (Net MWe): 510 1
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): N/A
10. Reasons for restrictions, if any: N/A This Month Yr-to-Date Cumulative
11. Hours in Reporting Period 744.00 5831.00 233735.00
12. Number Of Hours Reactor was Critical 744.00 5831.00 196032.16
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 744.00 5831.00 192555.00
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1180200.70 9222487.50 290302148.90
17. Gross Electrical Energy Generated (MWH) 393490.00 3142520.00 97184717.00
18. Net Electrical Energy Generated (MWH) 370546.00 2995828.00 92437279.00
19. Unit Service Factor 100.00 100.00 81.30
20. Unit Availability Factor 100.00 100.00 81.30
21. Unit Capacity Factor (Using MDC Net) 97.70 100.70 77.30
22. Unit Capacity Factor (Using DER Net) 95.40 98.40 75.70
23. Unit Forced Outage Rate 0.00 0.00 4.40
24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each: 1999 Refueling Outage scheduled to begin on October 29,1999 and end on November 30, 1999.
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 INITIAL ELECTRICITY COMMERCIAL OPERATION VYDPF 0411.01 (Sample)

DP 0411 Rev. 7 Page 1 of 1 RT No. 13.F01.19F

AVERAGE DAILY UNIT POWER LEVEL

+-

, DOCKET NO. 50-271 UNIT Vermont Yankee DATE 990910 COMPLETED BY G.A. WALLIN

, TELEPHONE (802)258-5414 MONTH August DAY AVERAGE DAILY POWER LEVEL DAY AVEPAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 488 17. 502
2. 496 18. _

502

3. 492 19. 501
4. 486 20. 503
5. 486 21. 504
6. 495 22. 503
7. 498 23. 504
8. 495 24. 506
9. 501 25. 505
10. 495 26. 475 11, 500 27. 503
12. 496 28. 499
13. 496 29. 501 14, 493 30. 506
15. 499 31. 507
16. 499 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 (Sample)

DP 0411 Rev. 7 Page 1 of 1 RT No. 13.F01.18V

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DOCKET NO. 50-271

. - DATE 990910 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH August

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 99.6% of rated thermal power for the month.

Gross electrical generation was 393,490 MWHe or 96.9% design 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 99.9%

of rated thermal power.

990810 At 0146 hours0.00169 days <br />0.0406 hours <br />2.414021e-4 weeks <br />5.5553e-5 months <br />, reducing power to 77% to perform a rod pattern adjustment. (See Unit Shutdowns and Power Reductions) 990810 At 0227 hours0.00263 days <br />0.0631 hours <br />3.753307e-4 weeks <br />8.63735e-5 months <br />, initiated a rod pattern adjustment.

990810 At.0245 hours0.00284 days <br />0.0681 hours <br />4.050926e-4 weeks <br />9.32225e-5 months <br />, completed the rod pattern adjustment.

-990810 At 0257-hours, initiated a return to full power.

990826 At 0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br />, reducing power to 69.5%-to perform Main Steam Isolation Valve and Turbine Bypass Valve testing, and a rod pattern exchange. (See Unit Shutdowns and Power Reductions) 990626 At 0205 hours0.00237 days <br />0.0569 hours <br />3.38955e-4 weeks <br />7.80025e-5 months <br />, initiated Main Steam Isolation Valve testing.

990826 At 0225 hours0.0026 days <br />0.0625 hours <br />3.720238e-4 weeks <br />8.56125e-5 months <br />, initiated Turbine Bypass Valve testing.

990826 At 0242 hours0.0028 days <br />0.0672 hours <br />4.001323e-4 weeks <br />9.2081e-5 months <br />, completed Main Steam Isolation Valve testing.

990826 At 0303 hours0.00351 days <br />0.0842 hours <br />5.009921e-4 weeks <br />1.152915e-4 months <br />, completed Turbine Bypass Valve testing.

990826 At 0310 hours0.00359 days <br />0.0861 hours <br />5.125661e-4 weeks <br />1.17955e-4 months <br />, initiated a rod pattern exchange.

990826 At 0350 hours0.00405 days <br />0.0972 hours <br />5.787037e-4 weeks <br />1.33175e-4 months <br />, completed a rod pattern exchange.

l 990826 At 0430 hours0.00498 days <br />0.119 hours <br />7.109788e-4 weeks <br />1.63615e-4 months <br />, began a return to full power. j l

l At the end of the reporting period the plant was operating at 99.9% of I

rated thermal power.

VisPr 0411. 04 (Sample)

DP 0411 Rev. 7 Page 1 of 1 RT No. 13.F01.18X

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