ML20214K399

Monthly Operating Rept for Jul 1986

ML20214K399
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/31/1986
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF RESOURCE MANAGEMENT (ORM)
References
VYV-86-239, NUDOCS 8608210068
Download: ML20214K399 (7)

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VEINONT YAMEE NUCLEAR POWER STATION WNTH.Y STATISTICAL REPORT 86-07 l

FOR THE K) NTH OF Jll.Y,1986 VYDPF 0411 Original 03%hk 3UP6

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w OPERATING 04TA REPORT DOCKET f0.

50-271 DATE 860810 COWLETED BY G.A. Wallin TELEPHOPE (802) 257-7711 a

OPERATING STATUS Notes:

1.

Unit Names Vermont Yankee 2.

Reporting Period:

July 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 any:

N/A This month Yr-to-Date Cumulative

11. Hours in Reporting Period 744.00 5087.00

12. Number of Hours Reactor was Critical 714.13 714.55 93825.61

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 648.57 648.57 91366.92

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 915088.50 915088.50 133024719.50

17. Gross Electrical Energy Generated (MWH)

_290965.00 290965.00 44246867.00

18. Net Electrical Energy Generated (MWH) 271725.00 271725.00 41971975.00

19. Unit Service Factor 87.17 12.75 75.21

20. Unit Availability Factor 87.17 12.75 75.21

21. Unit Capacity Factor (using MDC Net) 72.46 10.60 68.55

22. Unit Capacity Factor (using DER Net) 71.05 10.39 67.21

23. Unit Forced Outage Rate 0.00 0.00 6.88

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 COM4ERCIAL OPERATION f

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. AVERAGE'ORILY LMIT POWER LEVEL

. DOCKET 10. -

50-271 UNIT Vermont Yankee 04TE' 860710-COWLETED BY.

G.A. Wallin-TELEPHONE.

(802) 257-7711

>0 NTH' July DAY. ~ AVERAGE DAILY POWER LEVEL mY AVERAGE DRILY-POWER LEVEL (MWe-Net)-

-(MWe-Net).

1 0

17 483 2

0 18 479 3

12 19 478 4

0-~

20 462 5

61 21 483

'6 81 22 484 7

154 23 482'

-8 274 24 -

481 9

362' 25 481 10 392 26

-480 11 402 27 475-12 472 28 480 13 460 29 481 14 485 30 485 15 484 31 486

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16 484 1-INSTRUCTIONS:

On this format, list the average daily unit pcwer level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawatt.

j VYDPF 0411.02 j

Original

DOCKET 70.

50-271 LNIT P4W4E Vermont Yankee UNIT SHUTDOWNS AND POWER PEu:TIONS

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DRTE 860810-1 COWLETED BY G. A. Wallin REPORT E NTH July TELEPHOPE (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 #

85-14 860701 S

63.00 C

1 N/A NA NA 1985/1986 RefuelingA4aintenance/

(cont:

Recirc Pipe Replacement Outage.

86-01 860703 S

32.43 8

N/A N/A N/A NA.

Turbine Overspeed Testing 86-02 860710 S

0.00 8

4 N/A CB PLMPXX Power Reduction for Recirc Power Piping Stability Testing Reduction 86-03 860713 S

0.00 B

4 N/A CB Ptw XX Power Reduction for Recirc -

Power Piping Stability Testing Reduction 86-03 860713 S

-0.00 8

4 NA RB CONm0 Power Reduction for Turbine and (cont:

Power Control Rod Surveillance Reduction 1

2 3

4 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 Report (LER) File (NUREG 0161)

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

F-Administrative 5

VYDPF 0411.03 G-Operational Error (Explain)

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

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50-271 UNIT

,V:rmont Yankee O

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DATE 860810 COMPLETED BY G.A. Wallin TELEPK)tE (802) 257-7711 REPORT K) NTH July SLM4ARY OF OPERATING EXPERIENCES Highlights t

Vermont Yankee. operated at 77.2% of rated thermal power for the month.

Gross slactrical generation was 290,965 MWH or 72.4% of design e

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 0% of rated thermal power.

860702 At 0552 hours0.00639 days <br />0.153 hours <br />9.126984e-4 weeks <br />2.10036e-4 months <br />, the reactor was critical.

860703 At 1500 hours0.0174 days <br />0.417 hours <br />0.00248 weeks <br />5.7075e-4 months <br />, the turbine generator was phased to the grid.

860703 At 1945 hours0.0225 days <br />0.54 hours <br />0.00322 weeks <br />7.400725e-4 months <br />, the turbine generator was removed from the grid for overspeed-testing.

1860705 At 0411 hours0.00476 days <br />0.114 hours <br />6.795635e-4 weeks <br />1.563855e-4 months <br />, the turbine ganerator was phased to the grid.

860710 At 1644 hours0.019 days <br />0.457 hours <br />0.00272 weeks <br />6.25542e-4 months <br />, the "A" recirc pump was tripped for Stability Testing.

(See Unit Shutdowns And Power Reductions.)

860710 At 1847 hours0.0214 days <br />0.513 hours <br />0.00305 weeks <br />7.027835e-4 months <br />, the "A" recirc pump was started.

' 860713 At 1025 hours0.0119 days <br />0.285 hours <br />0.00169 weeks <br />3.900125e-4 months <br />, the "B" recirc pump was tripped for Stability Testing.

(See Unit Shutdowns and Power Reductions.)

860713 At 1122 hours0.013 days <br />0.312 hours <br />0.00186 weeks <br />4.26921e-4 months <br />, the "B" recirc pump was started.

860713 At 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br />, following final Stability Testing, Control Rod and Turbine surveillances were initiated.

860713 At 1300 hours0.015 days <br />0.361 hours <br />0.00215 weeks <br />4.9465e-4 months <br />, Control Rod and Turbine surveillances were completed and a return to full power was started.

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

VYDPF 0411.05 Original

VERMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR HUNT ROAD j

VERNON, VERMONT 05354 VYV 86-239 August 10,' 1986 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 July,1986.

Very truly yours, VERM)NT YAWEE NUCLEAR POWER CORP.

f@

Warren P MurpMy Vice Pre ident an Manager of Operations WPM / TAW /lat:MSRl.lA4SR VYDPF 0411

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