ML20127C926

Monthly Operating Rept for May 1985

ML20127C926
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	05/31/1985
From:	Burger F, Murphy W VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
VYV-85-291, NUDOCS 8506240064
Download: ML20127C926 (7)

Text

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VERMONT YA*EE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 85-05 FOR THE MONTH OF MAY,1985

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OPERATING DATA REPORT Docket No.

50-271 Date 850610 Completed by F.J. Burger Telephone (802) 257-7711 t

OPERATING STATUS Notes:

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Unit Name:

Vermont Yankee 2.

Reporting Period:

May, 1985 3.

Licensed Thermal Power (MWt):

1593 4.

Nameplate Rating (Gross MWe):

54 0 3

5.

Design Electrical Rating (Net MWe):514(oc) 504(cc) 4' 6.

Maximum Dependable Capacity (Gross Mwe):

535 7.

Maximum Dependable. Capacity (Net MWe):

504 8.

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

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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 Pericd 744.00 3623.00

12. Number of Hours Reactor was Critical 744.00 3607.97 90421.90

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 744.00 3602.55 88032.62

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15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1160304.00 5656908.00 128215917.50

17. Gross Electrical Energy Generated (MWH) 385429.00 1909219.00 42698967.00 a

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18. Net Electrical Energy Generated (MWH) 365094.00 1825818.00 40526666.00

19. Unit Service Factor 100.00 99.44 79.12

20. Unit Availability Factor 100.00 99.44 79.12

21. Unit Capacity Factor (using MDC Net) 97.36 99.99 72.27

22. Unit Capacity Factor (using DER Net) 95.47 98.05 70.86

23. Unit Forced Outage Rate 0.00

.56 7.12

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

Refuelina outaae scheduled to start September 14, 1985 and continue to April 26, 1986.

25. If shut down at end of report period, estimated date of startup:

26. Units in Test Status-(prior to commercial operation):

Forecast Achieved Initial Criticality Initial Electricity Ccmmercial Operation MSR1.2 I

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AVERAGE DAILY UNIT POWER LEVEL Docket No.

50-271 Unit Vermont Yankee Date 850610 Completed by F.J. Burger Telephone (802) 257-7711 MONTH May, 1985 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1 514 17 502 2

513 18 317 3

513 19 446 4

514 20 503 5

484 21 504 6

514 22 504 7

514 23 504 8

513 24 503 9

510 25 496 10 508 26 480 11 506 27 481 12 460 28 487 13 501 29 483 14 489 30 484 15 483 31 483 16 503 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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Dockst No.-

50-271

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Unit Vcrmont Yankee UNIT SHUTDOWNS AND POWER-REDUCTIONS Date 850610 Completed by F. J. Burcer REPORT. MONTH-May Telephone (802) 257-7711

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Date Typed Duration Reason Method of License System Component Cause and CorrectG e Action to,

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Shutting.Dorn Event Code Code Prevent Recurrence e

Reactor,

Report #

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j 85-08 850518 IS?

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4 N/d RB COtiR00 Power reduction for control rod

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(Power pattern exchange and surveillance

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Redaction) testing.

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F-Forced A-Equipment Failure (Explain)

Method Exhibit G - Instructions S-Scheduled-B-Maintenance or Test 1-Manual for Preparation of Data Entry C-Refueling 2-Manual Scram Sheets for Licensee Event D-Regulatory Restriction 3-Automatic Scram Repcrt (LER) File (NUREG 0161)

E-Operator Training and License Examination 4-Other (Explain)

F-Administrative 5

G-Operational Error (Explain)

Exhibit I - Same Source H-Other (Explain)

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4' Oock2t No.

50-271 dnit Vermont Yankew 1

Date 850610 Completed by F 1. Burger 2

i Telephone (807) 257-7711 REPORT MONTH May, 1985 i

SUMMARY

OF OPERATING EXPERIEHQ{S

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Vermont Yankee operated at 97.9% of rated thermal power for the month. Gross electrical generation was 385,429 MWHe or 95.9% of design electrical capacity.

Operatina Summary A

The followi g is a chronological description of plant operations inclafding 9

other pertinent items of interest for the foqth:

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

7 850515 At 1314 hrs. started cooling tower operations.

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r 850518,. At 0001 hrs, a power redection was initiated for a control rod pattern exchange and other surveillance.

850518 At 0710 hr's. a return to full power was; started.

850528 At2'100 hrs.close'dcyclecooling,utilizingthecooling towers, was established.

At the end of ths cepur'.ing period the plant was operating at 99.9% of rated thermal power.

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VERMONT Y.ANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR huh"r ROAD VERNON, VERMONT 05354 VYV 85-291 June 10, 1985 U. S. Nuclear Regulatory Commission Director, Office of Management Information and Program Control Washington, D. C.

20555

Dear Sir:

Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station - for the month of May,1985.

Very truly yours, VERMONT YAFEEE NUCLEAR POWER CORPORATION t%+<*~--ffm Warren P. Murphy F [

Vice President and Manager of Operations

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