ML20212M432

Monthly Operating Rept for Oct 1986

ML20212M432
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	10/31/1986
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF ADMINISTRATION (ADM)
References
VYV-86-363, NUDOCS 8701300119
Download: ML20212M432 (6)

Text

VERMONT YAWEE NUCLEAR POWER STATION MONTH.Y STATISTICAL REPORT 86-10 FOR THE MONTH OF OCTOBER,1986 VYOPF 0411 0701300119 061031 PDH ADOCK 05000271

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OPERATIbG DATA REPORT DOCKET NO.

50-771 DATE 861110 COMPLETED BY G.A. Wallin TELEPHONE (807) 757-7711 OPERATING STATUS Notes:

1.

Unit Name Vermont Yankee 2

Reporting Period:

October-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:

N/A 9.

Power level to which restricted, if any (Net MWe), N/A

10. Reasons for restrictions, if anye N/A This month Yr-to-Date Cumulative

11. Hours in Reporting Period 745.00 7796.00

12. Number of Hours Reactor was Critical 717.17 7895.67 96006.73

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator OrwLine 643.77 2796.34 93514.69

15. Unit Reserve Shutdown Hours 0.00 0.00 0.05

16. Gross Thermal Eneray Generated (MWH) 1049948.00 42636??.50 136374753.50

17. Gross Electrical Eneroy Generated (MWH) 350570.00 1391505.00 45347407.00

18. Net Electrical Energy Generated (MWH) 333374.00 1308493.00 43008743.00

19. Unit Service Factor 91.78 18.33 75.60

20. Unit Availability Factor 91.78 38.33 75.60

21. Unit Capacity Factor (using MDC Net) 88.77 15.58 58.99

22. Unit Capacity Factor (using' DER Net) 87.05 34.89 67.64

~

23. Unit Forced Outage Rate 8.??

2.14 6 79

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 O riginal COMMERCIAL OPERATION

AVERAGE DAILY UNIT PODER LEVEL DOCKET NO.

50-271 UNIT Vermont Yankee DATE 861110 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 MONTH October DAY AVERAGE DAILY POWER LEVEL MY AVERAGE 04ILY POWER LEVEL (MWe-Net)

(MWe-Net )

1 485 17 518 2

489 18 518 3

226 19 496 4

0 20 518 5

0 21 519 6

141 22 518 7

400 23 518 8

424 24 518 9

485 25 515 10 499 26 513 (25 hr. day) 11 499 27 512 12 492 28 518 13 491 29 519 14 487 30 519 15 515 31 519 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.

VYDPF 0411.02 O rl01nal

DOCKET to.

50-271 UNIY PAME Vermont Yankee LNIY SfJTD0nNS AND POWER REDUCVIGNS D4TE 861110 COMPLETED BY G. A. Wallin REPORT K) NTH October TELEPK)NE (802) 257-7711 1

2 3

4 5

hb.

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

Shuttino Down Event Code Code Prevent Recurrence Reactor Report #

86-07 861003 F

20.78 8

4 NA HJ XXXXXX Power reduction to repair a Power section of Turbine boot which was Reduction causino excessive in-leakaoe to the condenser.

86-GS 861004 F

t.0.45 G

3 LER 1A INSTRU Scram causad by HIHI IRM flux 86-15 sionals. (See LER 86-15) 86-09 861003 5

0.00 H

4 NA RB CONROD Power reduction for a rod patterr Power adjustment.

Reduction 1

2 3

4 F Forced A-Equipment Failure (Explain)

Method.

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

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

F A tinistrative 5

WDFF 0411.03 G-Operational Error (Explain)

Exhibit I - Same Source Original H-Other (Explain)

DOCKET NO.

50-271 UNIT Vermont Yankee 04 TE 861110 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 REPORT K) NTH October SJMMARY OF OPERATING EXPERIENCES Hlahllahts Vermont Yankee operated at 88.5% of rated thermal power for the month.

Gross electrical generation was 350,570 MWH or 87.1% f design e

electrical capacity.

Operating Summary The following is a chronological description of plant operations including other pertinent items of interest for the months At the beginning of the reporting period the plant was operating at 99.9% of rated thermal power.

861003 At 0420 hours0.00486 days <br />0.117 hours <br />6.944444e-4 weeks <br />1.5981e-4 months <br />, reduced power to 50%.

(See Unit Shutdowns and Power Reductions)"

861003 At 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />, secured the "B" recirc pump.

861003 At 1612 hours0.0187 days <br />0.448 hours <br />0.00267 weeks <br />6.13366e-4 months <br />, started the "B" recirc pump.

861003 At 2046 hours0.0237 days <br />0.568 hours <br />0.00338 weeks <br />7.78503e-4 months <br />, the generator was removed from the grid.

861004 At 1733 hours0.0201 days <br />0.481 hours <br />0.00287 weeks <br />6.594065e-4 months <br />, the reactor automatically scrammed.

(See Unit Shutdowns and Power Reductions) 861005 At 2126 hours0.0246 days <br />0.591 hours <br />0.00352 weeks <br />8.08943e-4 months <br />, the reactor was critical.

861006 At 1000 hours0.0116 days <br />0.278 hours <br />0.00165 weeks <br />3.805e-4 months <br />, the turbine-generator was phased to the grid.

861008 At 0845 hours0.00978 days <br />0.235 hours <br />0.0014 weeks <br />3.215225e-4 months <br />, reduced power to perform a rod pattern adjustment.

(See Unit Shutdowns and Power Reductions) 861008 At 1130 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.29965e-4 months <br />, a return to full power was initiated.

861015 At 0155 hours0.00179 days <br />0.0431 hours <br />2.562831e-4 weeks <br />5.89775e-5 months <br />, the cooling towers were secured and the plant went to an open cycle mode of operation.

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

VYOfY 0411.04 0rlgina1

D o

VICitMONT YANK 1010 NucL10An l'OwiCit Colt!'Olt ATION l' O. BOX 157 GOVI:ltNOlt IIUNT ItOAD VEltNON, VEllMONT 05354 WV 86-363 November 10, 1986 U. S. Nuclear Regulatory Commission Director, Office of Management Information and Program Control Washington, D. C.

20555 Dear Stre Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of October,1986.

Very truly yours, j

VERMONT YANKEE NUCLEAR NWER CORP.

1. N 4h Warren P.

urphy Vice President and Manager of Operations WPM / CAW / mmh eMSRI.1#91 VYDPf 0411 O riginal M

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