BVY-99-127, Monthly Operating Rept for Sept 1999 for Vermont Yankee Nuclear Power Station.With

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Monthly Operating Rept for Sept 1999 for Vermont Yankee Nuclear Power Station.With
ML20217G178
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 09/30/1999
From: Balduzzi M, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-99-127, NUDOCS 9910210213
Download: ML20217G178 (6)
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i VERMONT YANKEE )

NUCLEAR POWER CORPORATION l P.O. Box 157, Governor Hunt Road Vernon, Vermont 05354-0157 (802)257-7711 l

October 8,1999 BVY-99-127 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 Tecimical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of _ September.1999.

Sincerely, VERMONT YANKEE NUCLEAR f OWER CORPORATION '

,( )

Michael A. Balduzzi l Plant Manager  !

l cc: USNRC Region I Administrator USNRC Resident Inspector- VYNPS USNRC Project Manager- VYNPS l Vermont Department of Public Service 9910210213 990930 "~ bN /)

PDR ADOCK 05000271 R PDR 1

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l VERMONT YANKEE NUCLEAR POWER STATION l MONTHLY STATISTICAL REPORT 99-09 FOR THE MONTH OF SEPTEMBER 1999 i

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OPERATING DATA REPORT l

. DOCKET NO.50-271 DATE 991008 COMPLETED BY L A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Name: Vermont Yankee
2. Reporting Period: September i
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rat ig(Gross MWe): 540
5. Design Electrical Rating (Net MWe): 522 i
6. Maximum Dependable Capacity (Gross MWe): 535
7. Maximum Dependable Capacity (Net MWe): 510
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(Nat MWe): N/A )
10. Reasons for-restrictions, if any: N/A This Month Yr-to-Date Cumulative 1
11. Hours in Reporting Period 720.00 6551.00 234455.00 l
12. Number Of Hours Reactor was Critical 720.00 6551.00 196752.16 1
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 720.00 6551.00 193275.00 l
15. Unit Reserve Shutdown Hcurs 0.00 0.00 0.00 l
16. Gross Thermal Energy Generated (MWH) 1144828.40 10367315.90 291446977.30 1
17. Gross Electrical Energy Generated (MWH) 388884.00 3531404.00 97573601.00
18. Net Electrical Energy Generated (MWH) 367482.00 3363310.00 92804761.00
19. Unit Service Factor 100.00 100.00 81.30 l
20. Unit Availability Factor 100.00 100.00 81.30 21.. Unit Capacity Factor (Using MDC Net) 100.01 100.70 77.30 j
22. Unit Capacity Factor (Using DER Net) 97.80 98.40 75.80 l
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

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AVERAGE DAILY UNIT POWER LEVEL

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DOCKET NO. 50-271 UNIT Vermont Yankee DATE 991008

. COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH September DAY AVERAGE-DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 505 17. 519 2, 503 18, 520 3 .. 503 19. 522
4. 500 20. 521
5. 498 21. 521
6. '495~ 22, 523
7. 496 23. 522  !
8. 498 24. 522-
9. 497 25. 522 __
10. 497 26. 522
11. 504 27. 520
12. 505 28. 509
13. 506 29. 522 __
14. 503 30. 517
15. 507 31. ---

16, 511 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)

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  • DOCKET NO. 50-271 DATE 991008 COMPLETED BY G.A. WALLIN

. TELEPHONE (802)258-5414 '

. REPORT MONTH- September

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont - Yan:cee . operated at 99.8% of rated thermal power for the month.

Gross electrical generation was 388,884, MWHe or 98.9% 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 opera: ing at 99.9%

of rated thermal-power.

,990928 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, reducing power to 77% to perform a rod pattern adjustment. (See Unit Shutdowns and Power Reductions) 990928 At 0120 hours0.00139 days <br />0.0333 hours <br />1.984127e-4 weeks <br />4.566e-5 months <br />, initiated a rod pattern adjustment.

990928 At 0130 hours0.0015 days <br />0.0361 hours <br />2.149471e-4 weeks <br />4.9465e-5 months <br />, completod the rod pattern adjustment.

990928 At 0135 hours0.00156 days <br />0.0375 hours <br />2.232143e-4 weeks <br />5.13675e-5 months <br />, initiated a return to full power.

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l At the'end 6f the reporting period.the plant was operating at 99.9% of rated thermal power.

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VYDPF 0411.04 (Sample)

DP 0411 Rev. 7 l Page 1 of 1 '

RT No. 13.F01.18X t

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