ML021430349

April 2002 Monthly Operating Report for Vermont Yankee Nuclear Power Station

ML021430349
Person / Time
Site:	Vermont Yankee
Issue date:	05/09/2002
From:	Bronson K Vermont Yankee
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BVY-02-30
Download: ML021430349 (6)

Text

VERMONT YANKEE NUCLEAR POWER STATION P.O. Box 157, Governor Hunt Road Vernon, Vermont 05354-0157 (802) 257-7711 May 9, 2002 BVY-02-30 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Reference:

(a) License No. DPR-28 (Docket No. 50-27 1)

In accordance with section 6.6.B of the Vermont Yankee Technical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of April, 2002.

Sincerely, VERMONT YANKEE NUCLEAR POWER STATION Kevin H. Bronson Plant Manager cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Manager - VYNPS 62Lt I

VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 02-04 FOR THE MONTH OF APRIL 2002

OPERATING DATA REPORT DOCKET NO.50-271 DATE 020509 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Name: Vermont Yankee

2. Reporting Period: April

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

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(Net MWe): N/A

10. Reasons for restrictions, if any: N/A This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 719.00 2879.00 257087.00

12. Number Of Hours Reactor was Critical 719.00 2879.00 217994.42

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 719.00 2879.00 214425.44

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated(MWH) 1031811.50 4313120.58 324503204.78

17. Gross Electrical Energy Generated(MWH) 352853.00 1481788.00 108911377.00

18. Net Electrical Energy Generated(MWH) 338459.00 1423829.00 103643572.00

19. Unit Service Factor 100.00 100.00 82.40

20. Unit Availability Factor 100.00 100.00 82.40

21. Unit Capacity Factor(Using MDC Net) 92.30 97.00 78.80

22. Unit Capacity Factor(Using DER Net) 90.20 94.70 77.20

23. Unit Forced Outage Rate 0.00 0.00 4.03

24. Shutdowns scheduled over next 6 months(Type, Date, and Duration of Each: Mid-Cycle Refueling Outage from 5/11/02 to 5/22/02

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.FO1.19F

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 020509 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH April DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 398 17. 475

2. 470 18. 475

3. 475 19. 475

4. 475 20. 475

5. 475 21. 476

6. 475 22. 462

• 7 456 23. 476

8. 460 24. 476

9. 475 25. 476

10. 474 26. 476

11. 474 27. 476

12. 474 28. 476

13. 474 29. 463

14. 474 30. 476

15. 461 31.

16. 476 *23 hour day 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.FO1.18V

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH APRIL DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 020509 COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 1 2 3 4 5 No. Date Type Duration Reason Method of License System Component Cause and Corrective (hours) Shutting Event Code Code Action to Prevent Down Report # Recurrence Reactor 02-08 020401 S 0.00 H* 4 N/A RB CONROD Rod pattern adjustment Power Reduction 1 F: Forced 2 Reason: 3 Method: 4 Exhibit G- Instructions S: Scheduled A-Equipment Failure (Explain) 1 - Manual for Preparation of Data B-Maintenance or Test 2 - Manual Scram Entry Sheets for License C-Refueling 3 - Automatic Scram Event Report (LER) File D-Regulatory Restriction 4 - Other (Explain) (NUREG 0161)

E-Operator Training and License Examination 5 Exhibit I - Same Source VYDPF 0411.03 F-Administrative DP 0411 Rev. 7 G-Operational Error (Explain)

Page 1 of 1 *H-(Explain) - Rod pattern adjustment

DOCKET NO. 50-271 DATE 020509 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH April

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 90.0 of rated thermal power for the month.

Gross electrical generation was 352,853 MWHe or 89.8% 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 77.4%

of rated thermal power.

020401 At 0016 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br />, commenced a power reduction to 65% for a rod pattern adjustment. (See Unit Shutdowns and Power Reductions) 020401 At 0225 hours0.0026 days <br />0.0625 hours <br />3.720238e-4 weeks <br />8.56125e-5 months <br />, initiated a rod pattern adjustment.

020401 At 0255 hours0.00295 days <br />0.0708 hours <br />4.21627e-4 weeks <br />9.70275e-5 months <br />, completed a rod pattern adjustment.

020401 At 0310 hours0.00359 days <br />0.0861 hours <br />5.125661e-4 weeks <br />1.17955e-4 months <br />, initiated a return to full power.

At the end of the reporting period the plant was operating at 90.9% of rated thermal power.

VYDPF 0411.04 (Sample)

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