ML20069H030

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

ML20069H030
Person / Time
Site:	Vermont Yankee
Issue date:	05/31/1994
From:	Reid D, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-94-61, VY-RCE-94-014, VY-RCE-94-14, NUDOCS 9406100271
Download: ML20069H030 (6)

Text

o , e VERMONT YANKEE NUCLEAR POWER CORPORATION

• f. .-  ; P,0. Box 157, Governor Hunt Road

/ Vernon, Vermont 05354-0157

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p (802) 257-7711

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June 10,1994  :

VY-RCE-94-014 BVY 94-61

)

U.S. Nuclear Regulatory Commission Washington, D.C. 20555 j i

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 Vermont Yankee Nuclear Power Station for the month of May.1994.

Very truly yours, ,

Vermont Yankee Nuclear Power Corp.

Donald A. Reid Vice President, Operations cc: USNRC, Region I USNRC Resident Inspector, VYNPS 13000n ,q 9406100271 940531 PDR ADOCK 05000271 R '

PDR

VERMONT YANKEE NUCLEAR POWER STATION MONTIILY STATISTICAL REPORT 94-05 FOR TIIE MONTII OF MAY 1994 DP 0411 Rev. 5 Page 1 of 1

-_. - - _ _ . - _ . - _ _ ~ - - _ _ _ _ _ . . _. __]

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OPERATING DATA REPORT .

DOCKET NO.50-271 DATE 940610

. COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 i OPERATING STATUS

1. Unit Name: Vermont Yankee l

2. Reporting Period: May NOTES:

3. Licensed Thermal Power (MWt):1593 l

4. Nameplate Rating (Gross MWe): 540

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

6. Maximum Dependable Capacity (Gross MWe) : 115 -[

7. Maximum Dependable Capacity (Net MWe) : ED4

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 744.00 3623.00 188447.00

12. Number Of Hours Reactor was Critical 744.00 3582.12 154799.53

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00 l

14. Hours Generator On-Line 744.00 3566.17 151681.79 l

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00 i

16. Gross Thermal Energy Generated (MWH) 1182788.95 5638286.95 226343958.45 l

17. Gross Electrical Energy Generated 399978.00 1909096.00 75428478.00 -

18. Net Electrical Energy Generated (MWH) 383561.00 1834618.00 71681642.00 ,

19. Unit Service Factor 100.00 98.43 79.77

20. Unit Availability Factor 100.00 98.43 79.77

21. Unit Capacity Factor (Using MDC Net) 102.29 100.47 74.80

22. Unit Capacity Factor (Using DER Net) 100.30 98.52 73.34 j

23. Unit Forced Outage Rate 0.00 1.57 5.10  ;

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

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 i

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee '

. DATE 940610 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 i 1

MONTH May DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 518 17. 499

2. 518 18. 516  ;

3. 518 19. 517

4. __518 20. 516

5. J118 21. 517

6. 518 22. 515

7. 518 23. 515 -

8. 517 24. 514

9. 517 25. 514 r

10. 517 26. 514

)

11. 514 27. 515 l

12. 513 28. 514  ;

515

13. 517 29.

14. 516 _ _ _ _

30. 514

15. 517 31. 516 l

16. 517 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. ,

i VYDPF 0411.02 i

DP 0411 Rev. 5 Page 1 of 1 i RT No. 13.F01.18V 1

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UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH MAY DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 940610 COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 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 94-05 940517 S 0.00 B,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)

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) - Rod Pattern Exchange i

i i

i l

i t .-. - _ .

DOCKET NO. 50-271 DATE 940610 t COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 REPORT MONTH May

SUMMARY

OF OPERATING EXPERIENCES Highlichts Vermont Yankee operated at 99.8% of rated thermal power for the month.

Gross electrical generation was 399.978 MWHe or 11161 design electrical capacity.

Operatina 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 99.8%

of rated thermal power.

940516 At 0000 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />, began operation of Circulation water system governed by the NPDES permit, which is based upon river flow and temperature considerations.

940517 At 0125 hours0.00145 days <br />0.0347 hours <br />2.066799e-4 weeks <br />4.75625e-5 months <br />, initiated a power reduction to 69% for MSIV testing.

940517 At 0158 hours0.00183 days <br />0.0439 hours <br />2.612434e-4 weeks <br />6.0119e-5 months <br />, and 69% power, initiated MSIV testing. (See Unit Shutdowns and Power Reductions) 940517 At 0208 hours0.00241 days <br />0.0578 hours <br />3.439153e-4 weeks <br />7.9144e-5 months <br />, completed MSIV testing. Increasing power to 75% for  !

a rod pattern exchange.

940517 At 0220 hours0.00255 days <br />0.0611 hours <br />3.637566e-4 weeks <br />8.371e-5 months <br />, and 75% power, initiated a rod pattern exchange.

(See Unit Shutdowns and Power Reductions) 940517 At 0305 hours0.00353 days <br />0.0847 hours <br />5.042989e-4 weeks <br />1.160525e-4 months <br />, completed the rod pattern exchange.

940517 At 0338 hours0.00391 days <br />0.0939 hours <br />5.588624e-4 weeks <br />1.28609e-4 months <br />, 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 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.18X

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