ML20063G255

Monthly Operating Rept for Jan 1994 for Vermont Yankee Nuclear Power Station

ML20063G255
Person / Time
Site:	Vermont Yankee
Issue date:	01/31/1994
From:	Reid D, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-94-16, VY-RCE-94-003, VY-RCE-94-3, NUDOCS 9402150375
Download: ML20063G255 (6)

Text

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.o . VURMONT YANKEE NUCLEAR POWER CORPORATION Th , P.O. Box 157, Governor Hunt Road

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Vernon, Vermont 05354-0157 (802) 257-7711

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February 10,1994 VY-RCE-94-003 BVY 94-16 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 Monthly Statistical Report for the Vennont Yankee Nuclear Power Station for the month of Januarv.1994.

Very tmly yours, Vennont Yankee Nuclear Power Corp.

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Donald A. Reid Vice President, Operations cc: USNRC, Region I USNRC Resident Inspector, VYNPS i

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m 9402150375 940131 1 iJ DR ADOCK 0500 j .

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1 VERMONT YANKEE NUCLEAR POWER STATION ,

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MONTIILY STATISTICAL REPORT 94-01 FOR TIIE MONTII OF JANUARY 1994

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,. ~ OPERATING-DATA REPORT f DOCKET NO.50-271 l DATE-940210 COMPLETED BY G.A. WALLIN Ll TELEPHONE (802)257-7711' l OPERATING STATUS -

1. Unit Name: Vermont Yankee

'2. . Reporting Period: Januarv NOTES:  !

3. Licensed Thermal Power (MWt):1593 i

4. Nameplate Rating (Gross MWe) : E40

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

6. Maximum Dependable Capacity (Gross MWe) : 535_-

7. Maximum Dependable Capacity (Net MWe): 524 .i y

8. If changes, occur in capacity ratings-(Items Number 3 through 7) sinca '

last report, give reasons: }

'N/A 3

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 744.00 744.00 185568.00o

12. Number Of Hours Reactor was Critical 744.00 744.00' 151961.43J q

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator-On-Line- 744.00' '744.00 148859.62

15. Unit. Reserve Shutdown Hours 0.00 'O.00 -0.00 1

16. Gross Thermal Energy Generated (MWH) 1181990.00 1181990.00'221887661.50 ,

17. Gross Electrical Energy Generated 401169.00 401169.00' 73920551.00

18. Net Electrical Energy Generated (MWH) 385670.00 385670.00 '70232694.00 i

19. Unit Service Factor- 100.00 100.00 -79.49. j

20. Unit Availability Factor 100.00- 100.00- '79.49  ?

21. Unit Capacity Factor (Using MDC Net) 102.85 102.85 74.41- j

22. Unit. Capacity Factor (Using DER Net)- 100.85 100.85 72.96'  ;

23. Unit Forced Outage Rate 0.00 0.00 5.15 j

24. Shutdowns scheduled over next'6 months (Typei Date,.and Duration of. .

1l Each: N/A 7

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25. If shut down at end of report period, . estimated 1date of startup:N/A' l

26. Units In. Test Status (prior to~ commercial operation): N/A l Forecast Achieved- ,

INITIAL CRITICALITY ci INITIAL ELECTRICITY  ;

-COMMERCIAL OPERATION VYDPF 0411.01

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AVERAGE DAILY UNIT POWER LEVEL  ;

.4-DOCKET NO. 50-271 [

. UNIT Vermont Yankee. t DATE 940210 .

COMPLETED BY G.A. WALLIN .

TELEPHONE (802)257-7711 MONTH Janua ry

' DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL  ;

(MWe-Net) (MWe-Net)

1. 520 17. 51  !

2. 519 18. 521  !

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3. 519 19. 519

-4. 519 20. 519 -i t

5. 519 21. 520 i

6. 519 22. 520

7. 519 23. 519 l

8. 520 24. 520 490

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9. 25. 520

10. __

519 26. 520  :

11. 519 27. 519  ;

12. 519 28. 519 -i

13. 519 29. 520 l

14. 519 30. 519  !

15. 519 31. 519 i V

16. 518  ;

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.  ;

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UNIT SHUTDOWNS AND POWER REDUCTIONS i REPORT MONTH JANUARY DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 940210 COMPLETED BY G.A. Wallin -

TELEPHONE (802)257-7711 t

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 94-01 940109 S 0.00 H* 4 N/A RB CONROD MSIV testing, and a-Power Rod Pattern Exchange 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) 4 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) - Control Rod Pattern Exchange

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, . . DOCKET.NO. 50-271

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c1* DATE 940210 i COMPLETED BY G.A.-WALLIN

' TELEPHONE. (802)257-7711 REPORT MONTH 'Januarv

SUMMARY

OF OPERATING EXPEEJENCES Highlights

. Vermont Yankee _ operated at 99.7% of rated thermal power for the. month. -

Gross electrical generation.was 401.169 MWHe or 99.9% design electrical- f capacity. 1 i

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.

940109 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, initiated a power reduction to minimum recirculation flow to perform surveillance, and a rod pattern exchange. ' (See Unit' ,

' Shutdowns and Power' Reductions) 1 940109 At 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, initiated MSIV testing.  !

-940109 At 0207 hours0.0024 days <br />0.0575 hours <br />3.422619e-4 weeks <br />7.87635e-5 months <br />, completed MSIV testing.  !

940109 At 0220 hours0.00255 days <br />0.0611 hours <br />3.637566e-4 weeks <br />8.371e-5 months <br />, at 65% power initiated'a control rod pattern exchange. -

940109 At 0335 hours0.00388 days <br />0.0931 hours <br />5.539021e-4 weeks <br />1.274675e-4 months <br />, completed the control rod pattern exchange. '

-940109 At 0405 hours0.00469 days <br />0.113 hours <br />6.696429e-4 weeks <br />1.541025e-4 months <br />, began a return to full power.

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

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