ML041670527

May 2004 Monthly Operating Report for Vermont Yankee

ML041670527
Person / Time
Site:	Vermont Yankee
Issue date:	06/10/2004
From:	Bronson K Entergy Nuclear Northeast, Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BVY-04-052
Download: ML041670527 (6)

Text

Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.

Vermont Yankee

-= Entergy 322 Governor Hunt Rd.

RO. Box 157 Vernon, VT 05354 Tel 802-257-771 1 June 10, 2004 BVY-04-052 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Reference:

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

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 May. 2004.

Kevin H. Bronsio'n General Manager, Plant Operations cc: USNRC Region I Administrator USNRC Resident Inspector USNRC Project Manager

VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 04-05 FOR THE MONTH OF MAY 2004

OPERATING DATA REPORT DOCKETNO.50-271 DATE 040610 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Name: Vermont Yankee

2. Reporting Period: May

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 744.00 3647.00 278568.80

12. Number Of Hours Reactor was Critical 685.08 2944.50 234745.72

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 656.58 2912.40 231039.09

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated(MWH) 1004658.50 4588562.45 350561552.19

17. Gross Electrical Energy Generated(MWH) 334645.00 1570306.00 117802558.00

18. Net Electrical Energy Generated(MWH) 319916.00 1506570.00 112133081.00

19. Unit Service Factor 88.30 79.90 82.90

20. Unit Availability Factor 88.30 79.90 82.90

21. Unit Capacity Factor(Using MDC Net) 84.30 81.00 79.60

22. Unit Capacity Factor(Using DER Net) 82.40 79.10 78.00

23. Unit Forced Outage Rate 0.00 0.00 3.80

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

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. 8 Page 1 of 1 RT No. 13.FO1.19F

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 040610 COEIPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH May DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (Myle-Net)

1. 0 17. 510

2. 0 18. 507

3. 0 19. 510

4. 64 20. 507

5. 227 21. 506

6. 365 22. 503

7. 457 23. 509

8. 508 24. 511

9. 512 25. 512

10. 511 26. 512

11. 513 27. 513

12. 512 28. 513

13. 512 29. 512

14. 512 30. 513

15. 508 31. 513

16. 509 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. 8 Page 1 of 1 RT No. 13.F01.18V

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH MAY DOCKET NO 50-271 UNIT NAME Vermont Yangee DATE 040610 COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 1 2 3 4 5 Cause and Corrective Action to Prevent No. Date Type Duration Reason Method of License System Component Recurrence.

Shutting Event Code Code (hours) Down Report #

Reactor 04-02 040504 S 87.42 B,C 1 N/A RB CONROD Shutdown for RFO-24 refueling outage 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 F-Administrative G-Operational Error (Explain)

H-(Explain) - VYDPF 0411.03 DP 0411 Rev. 8 Page 1 of 1

DOCKET NO. 50-271 DATE 040610 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH May

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 84.8% of rated thermal power for the month.

Gross electrical generation was 334,645 MWHe or 82.4% 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 00.0%

of rated thermal power.

040503 At 1055 hours0.0122 days <br />0.293 hours <br />0.00174 weeks <br />4.014275e-4 months <br />, the reactor was critical. (See Unit Shutdowns and Power Reductions) 040504 At 1331 hours0.0154 days <br />0.37 hours <br />0.0022 weeks <br />5.064455e-4 months <br />, the turbine-generator was phased to the grid.

040504 At 2113 hours0.0245 days <br />0.587 hours <br />0.00349 weeks <br />8.039965e-4 months <br />, the turbine-generator was removed from the grid.

040504 At 2307 hours0.0267 days <br />0.641 hours <br />0.00381 weeks <br />8.778135e-4 months <br />, the turbine-generator was phased to the grid and began a return to full power.

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

VYDPF 0411.04 (Sample)

DP 0411 Rev. 8 Page 1 of 1 RT No. 13.FO1.18X