ML20207M960

Monthly Operating Rept for Dec 1986

ML20207M960
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	12/31/1986
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
VYV-87-1, NUDOCS 8701130357
Download: ML20207M960 (6)

Text

-

VEfNONT YAlWEE NUCLEAR NWER STATION MONTH _Y STATISTICAL REPORT 86-12 FOR THE MONTH OF DECEMBER,1986 i

WDPF 0411 Original ADO $Ko jf

~

OPERATING OATA REPORT DOCKET 70.

50-271 DATE 870110 COWLETED BY G.A. Wallin TELEPHONE (802) 257-7711 OPERATING STATUS Notes:

1.

Unit Names Vermont Yankee

2.. Reporting Period:

December 3.

Licensed Thermal Power (MWt):

1593 4.

Nameplate Rating (Gross MWe):

540

'5.

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

NA 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 Ctnulative

11. Hours in Reporting Period 744.00 8760.00

12. Number of Hours Reactor was Critical 744.00 4359.67 97470.73

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line '

744.00 4260.34 94978.69

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 1171624.00 6566009.50 138675640.50

17. Gross Electrical Energy Generated (MWH) 397756.00 2172932.00 46128834.00

18. Net Electrical Energy Generated (MWH) 381731.00 1058426.00 43758676.00

19. Unit Service Factor 100.00 48.63 75.89

20. Unit Availability Factor 100.00 48.63-75.89

21. Unit Capacity Factor (using MOC Net) 101.80 46.62 69.37

22. Unit Capacity Factor (using DER Net) 99.82 45.72 68.02 i

- 23. Unit Forced Outage Rate 0.00 1.42 6.69

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 VYDPF 0411.01 INITIAL ELECTRICITY Original COWERCIAL OPERATION

AVERAGE DRILY LNIT POWER LEVEL DOCKET NO.

50-271 UNIT Vermont Yankee 04TE-870110-C0lfLETED BY G.A. Wallin TELEPK)NE (802) 257-7711 MONTH-December DAY AVERAGE M ILY POWER LEVEL DAY AVERAGE MILY POWER LEVEL

-(MWe-Net)

(MWe-Net) 1 519 17' 519 2

521 18 519 3

519 19 519 4

519 20 396 5

519-21 480 6

520 22 518 7

510 23 518

-8 520 24 519 9

519 25 519 10 519 26 519 11 519 27 519 12 519 28 515 13 519 29 518 14 513 30 518 15 518 31 519 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 Original

TOCKET NO.

50-271 UNIT NAME vermont Yankee UNIT SHUTDOWNS AND F0WER REDUCTIONS D4TE 870110 COMPLETED BY G. A. Wallin REPORT K) NTH December TELEPH3NE (802) 257-7711 1

2 3

4 5

No.

Date Type Duration Reason Method of License System Component Cause and Corrective Action to (hours)

Shutting Down Event Code Code Prevent Recurrence Reactor Report #

86-11 861207 S

0.00 B

4 N/A RB ZZZZZZ Power reduction for Turbine Power Bypass Valve testing.

Reduction 86-12 861220 S

0.00 B,H*

4 N/A RB CONROD Power reduction for a control roc Power pattern exchange and surveillance l Reduction testing.

I 2

3 4

F-Forced A-Equipment Failure (Explain)

Methods 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 Report (LER) File (NUREG 0161)

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

F-Administrative 5

WDPF 0411.03 G-Operational Error (Explain)

Exhibit I - Same Source Original

• H-Other (Explain)- Control Rod Pattern Exchange

DOCKET NO.

50-271 UNIT Vermont Yankee

[R TE 870110 COWLETED BY G.A. Wallin TELEPK)NE -

(802) 257-7711 REPORT K) NTH December SlMMRY OF OPERATING EXPERIENCES Highliohts Vermont Yankee operated at 98.9% of rated thermal power for the month.

Gross electrical generation was 397,756 MWH or 99.0% of design e

electrical capacity.

- Operating Sumary 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.

861207 At 0030 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />, reduced power to 80% to perform Turbine surveillance.

(See Unit Shutdowns and Power Reductions) 861207 At 0150 hours0.00174 days <br />0.0417 hours <br />2.480159e-4 weeks <br />5.7075e-5 months <br />, completed Turbine surveillance and a return to full power was started.

861220 At 0935 hours0.0108 days <br />0.26 hours <br />0.00155 weeks <br />3.557675e-4 months <br />, reduced power to 57% to perform Control Rod exer-cising and Turbine surveillance.

861220 At 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br />, completed surveillances and initiated a Rod Pattern Exchange.

(See Unit Shutdowns and Power Reductions) 861220 At 1155 hours0.0134 days <br />0.321 hours <br />0.00191 weeks <br />4.394775e-4 months <br />, completed the Rod Pattern Exchange.

861220 At 1201 hours0.0139 days <br />0.334 hours <br />0.00199 weeks <br />4.569805e-4 months <br />, tripped off the "B" recirc pump.

861220 At 1437 hours0.0166 days <br />0.399 hours <br />0.00238 weeks <br />5.467785e-4 months <br />, started the "B" recirc pump and began a return to full power.

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

VYOPF 0411.04 Original

,.. s e

VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR IIUNT ROAD VERNON, VERMONT 05354 VYV 87-1 January 10, 1987 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 December,1986.

Very truly yours, VERMONT YAM (EE NUO. EAR POWER CORP.

A[

Warren P.(Murph Vice President d

Manager of Operations WPM / TAW / mmh:MSR1.1/f4SR VYDPF 0411 Original I

t ft24 d,I I