ML20064F788

Monthly Operating Rept for Feb 1994 for VT Yankee Nuclear Power Station

ML20064F788
Person / Time
Site:	Vermont Yankee
Issue date:	02/28/1994
From:	Reid D, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-94-31, VY-RCE-94-006, VY-RCE-94-6, NUDOCS 9403150440
Download: ML20064F788 (6)

Text

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VERMONT YANKEE NUCLEAR POWER CORPORATION

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4 - C' ' - P.O. Box 157. Governor Hunt Road

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Vernon, Vermont 05354-0157

[/'kly f')y) (802) 257-7711

'( 1~3.),

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h1 arch 10,1994 VY-RCE-94-006 BVY 94-31 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attn: Document Control Desk

Reference:

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

Dear Sir:

Submitted herewith is the hionthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of Febmary.1994.

Very truly yours, Vermont Yankee Nuclear Power Corp.

l (w c_ w.

Donald A. Reid  ;

Vice President, Operations  ;

cc: USNRC, Region I l USNRC Resident Inspector, VYNPS f

940315044o 940228 [' )

I gDR ADOCK 05000271 l )

PDR 'l

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VERMONT YANKEE NUCLEAR POWER STATION A10NTIILY STATISTICAL REPORT 94-02 FOR TIIE A10NTil OF FEBRUARY 1994 I

l DP 0411 Rev. 5 Page 1 of 1 j i

OPERATING DATA REPORT DOCXET NO.50-271 DATE 940310 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 OPERATING STATUS

1. Unit Name: Vermont Yankee

2. Reporting Period: February NOTES:

3. Licensed Thermal Power (MWt):1593

4. Nameplate Rating (Gross MWe): 512

5. Design Electrical Rating (Net MWe): 514(oc) 504(cc)

6. Maximum Dependable Capacity (Gross MWe): 535

7. Maximum Dependable Capacity (Net MWe): 501

8. If changes, occur in capacity ratings (Items Number 3 through 7) since last report, give reasons: ,

N/A

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 672.00 1416.00 186240.00

12. Number Of Hours Reactor was Critical 672.00 1416.00 152633.41

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 666.35 1410.35 149325.97

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1049956.00 2231946.00 222937617.50

17. Gross Electrical Energy Generated 355149.00 756318.00 74275700.00

18. Net Electrical Energy Generated (MWH) 341377.00 727047.00 70574071.00

19. Unit Service Factor 99.16 99.60 79.56

20. Unit Availability Factor 99.16 99.62 79.56

21. Unit Capacity Factor (Using MDC Net) 100.79 101.J8 74.50

22. Unit Capacity Factor (Using DER Net) 98.83 99.89 73.06

23. Unit Forced Outage Rate 0.84 0.40 5. 11

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 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.19F 1

. .- AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 940310 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 MONTH February DAY AVERAGE [AILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL.

(MWe-Net) (MWe-Net)

1. 519 17, 519

2. 519 18. 519

3. 519 19. 519

4. 519 20. 519

5. 520 21. 519

6. 519 22. 521

7. 520 23. 519

8. 519 24. 519

9. 211 25. 519

10. 512 26. 519

11. 519 27. 519

12. 520 28. 519

13. 519 29. ---

14, 519 30. ---

.. 519 31. ---

16. 519 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 DP 0411 Rev. 5 Page 1 of 1

-RT No. 13.F01.18V

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UNIT SHUTDOWNS AND POWER REDUCTIONS .

d REPORT MONTH FEBRUARY DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 940310 COMPLETED BY G.A. Wallin TELEPHONE (8021257-7711 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 94-02 940209 F 5.65 B 4 N/A EB ELECON During a routine Power inspection, discovered i

, Reduction neutral ground on the main generator disconnected.

Generator was taken off-line to make the connection.-

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. 5 G-Operational Error (Explain)

Page 1 of 1 H-(Explain) -

f i

i I

e e

e .* DOCKET NO.19-271 l

.- DATE 940310 COMPLETED BY G.A. WALLIN

, TELEPHONE (802)257-7711 REPORT-MONTH February ,

i

SUMMARY

OF OPERATING EXPERIENCES 1 Highlights Vermont Yankee operated at 98.1% of rated thermal power for the month.

Gross electrical generation was 355.149 MWHe or 97.9% design electrical capacity.

Operating Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:

i At the beginning of the reporting period the plant was operating at 22_.2]L of rated thermal power.

940209 At 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, initiated a power reduction so a neutral ground connection could be established on the main generator. (See Shutdowns and Power Reductions) 940209 At 0919 hours0.0106 days <br />0.255 hours <br />0.00152 weeks <br />3.496795e-4 months <br />, and 25% power, the turbine-generator was removed from the grid.

940209 At 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br />, completed connection of the neutral ground to the main generator.

-940209 At 1458 hours0.0169 days <br />0.405 hours <br />0.00241 weeks <br />5.54769e-4 months <br />, the turbine-generator was phased to the grid and a return to full power was initiated, i

t i

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

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