BVY 04-061, June 2004 Monthly Operating Report for the Vermont Yankee Nuclear Power Station

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June 2004 Monthly Operating Report for the Vermont Yankee Nuclear Power Station
ML042020304
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 07/08/2004
From: Bronson K
Entergy Nuclear Northeast
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
BVY 04-061
Download: ML042020304 (6)
v • d • e


Text

Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.

Vermont Yankee Entergy 322 Governor Hunt Rd.

P.O. Box 157 Vernon, VT 05354 Tel 802-257-7711 July 8, 2004 BVY-04-061 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 6.6.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 June, 2004.

Sincerely, Kevin H. Bronson General Mqnager, Plant Operations cc: USNRC Region I Administrator USNRC Resident Inspector USNRC Project Manager uir2c1

VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 04-06 FOR THE MONTH OF JUNE 2004

i1 OPERATING DATA REPORT DOCKETNO.50-271 DATE 040708 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Name: Vermont Yankee
2. Reporting Period: JUNE
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 720.00 4367.00 279288.80
12. Number Of Hours Reactor was Critical 414.67 3359.17 235160.39
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 414.67 3327.07 231453.76
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated(MWH) 660019.75 5248582.20 351221571.94
17. Gross Electrical Energy Generated(MWH) 219788.00 1790094.00 118022346.00
18. Net Electrical Energy Generated(MWH) 209343.00 1715913.00 112342424.00
19. Unit Service Factor 57.59 76.19 82.87
20. Unit Availability Factor 57.59 76.19 82.87
21. Unit Capacity Factor(Using MDC Net) 57.01 77.04 79.54
22. Unit Capacity Factor(Using DER Net) 55.70 75.27 77.91
23. Unit Forced Outage Rate 42.41 8.41 3.91
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 commerci al 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 040708 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH JUNE DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 513 17. 492
2. 513 18. 123
3. 513 19. 0
4. 512 20. 0
5. 511 21. 0
6. 512 22. 0
7. 511 23. 0
8. 506 24. 0
9. 506 25. 0
10. 505 26. 0
11. 509 27. 0
12. 504 28. 0
13. 501 29. 0
14. 500 30. 0
15. 499 31.
16. 494 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.FO1.18V

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH JUNE 'I DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 040708 1 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 04-03 040618 F 305.33 A 3 2004-003 EB TRANSF Generator load reject due to electrical fault on main transformer 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 040708 COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 REPORT MONTH JUNE

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 57.5% of rated thermal power for the month.

Gross electrical generation was 219,788 MWHe or 55.9% 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.

040618 At 0640 hours0.00741 days <br />0.178 hours <br />0.00106 weeks <br />2.4352e-4 months <br />, the turbine tripped and reactor scrammed due to main generator load reject. The cause of the load reject was a fire on the main transformer caused by excessive ground. (See Unit Shutdowns and Power Reductions)

At the end of the reporting period the plant was operating at 0.0% of rated thermal power.

VYDPF 0411.04 (Sample)

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

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