ML20148R561

Monthly Statistical Rept for Mar 1988

ML20148R561
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	03/31/1988
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC
References
VYV-88-064, VYV-88-64, NUDOCS 8804140477
Download: ML20148R561 (6)

Text

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VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 88-03 FOR THE MJNTH OF MRCH,1988 VYDPF 0411 Rev. I h

8804140477 000331 E

ll PDR ADOCK 05000271 R

DCD

OPERATING DATA REPU6T 4

DOCKET NO.

50-271 DATE 880410 COMPLETED BY G.A. Wallin TELEPHOPE (802) 257-7711 OPERATING STATUS

~' Notes:

1.

Unit Names Vermont Yankee 2.

Reporting Period:

March 3.

Licensed Thermal Power (MWt):

593 4.

N&Aplate Rating (Gross MWeh 540 5.

Design Electrical Rating (Net MWe):514(oc) 504(ec) 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 744.0d 2184.00

12. Number of Hours Reactor was Critical 744.00 2184.00 107029.36

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 744.00 2184.00 104453.27

15. Unit Reserve Shutdown Hours 0.00 0.d5 0.00

16. Gross Thermal Energy Generated (MWH) 1163019.50 3439001.00 153179712.50

17. Gross Electrical Energy Generated (MWH) 393216.00 1163883.00 51003827.00

18. Net Electrical Energy Generated (MMi) 377284.06 1116806.00 48411893.00

19. Unit Service Factor 100.00 100.00 76.74

20. Unit Availability Factor 100.00 100.00 76.74

21. "nit Capacity Factor (using MDC Net) 100.62 101.46 70.57

22. Mit Capacity Factor (using DER Net) 98.66 99.49 69.20 23.

. orced Outage Rate 0.00 0.00 6.19

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 Rev. 1 COERCIAL OFERATI0ii 1

AVERAGE DAILY LNIT POWER LEVEL o

o DOCKET NO.

50-271 UNIT Vermont Yankee DATE 880410 CO H.ETED BY G.A. Wallin TELEPHONE (802) 257-7711 MONTH March DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(HWe-Net) 1 518 17 517 2

520 18 517 3

518 19 355 4

518 20 429 5

518 21 507 6

510 22 517 7

517 23 517 8

517 24 517 9

SP/

25 517 10 518 26 517 11 484 27 514 12 515 28 517 13 517 29 517 14 516 30 516 15 516 31 511 16 516 I

l l

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 Rev. 1

[

00CKET NO, 50-271 UNIT NAT Vermont Yankee

• UNIT SHUTDOWNS APO POWER REDUCTIONS DATE 880410 COPOLETED BY G. A. hallin

~

REPORT MONTH March TELEPH0tE (802) 257-7711

~

1 2

P 3

4 5

No.

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

Shutting Down Event Code Code Prevent Recurrence 4

Spectacle flange bolts loosened.

B8-02 880311 F

0.00 8

Power N/A CH XXXXXX All bolts torqued to Reduction specifIcatlon.

4 Control Rod and Turbine 88-02 880311 F

0.00 8

Power N/A RB CONROD Surveillance Testing.

Reduction 4

Control P,od Pattern Exchange, 88-03 880319 S

0.00 B,H*

Power N/A RB CONROD Surveillance Testing and Raduction Seteduled Maintenance.

J 2 Reason F Forced A-Equipment Failure (Explain) 3 Method.

4 Exhibit G - Instructions S-Scheduled B-Maintenance or Test 1-Marrsal for Preparation of Data Entry C-Refueling 2-Manual Scram Sheets for Licensee Event D-Regulatory Restriction 3-Automatic Scram Report (8ER) File (NUREG 0161)

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

F-Administrative 5 Exhibit I - Same Source G-Operational Error (Explain) See Above Cause and Corrective Action section

• H-(Explain) - Control Rod Pattern Exchange VYDPF 0411.03 Rev. 1

e DOCKET NO.

50-271 UNIT Vermont Yankee DATE 880410 COMPLETED BY G.A. Wallin TELEPHONE (802) 257-7711 REPORT MONTH March

SUMMARY

OF OPERATING EXPERIENCES Hiahliahts Vermont Yankee operated at 98.1% of rated thermal power for the monti.

Gross electrical generation was 393,216 kWHe or 97.9% of design electrical capacity.

Operatino Summary The following is a chronological descr!ption of plant operations including other pertinent items of interest for the month:

At the beginning of the reporting period the plant das operatirg at _99.9%

of rated thermal power.

880311 At 1415 hours0.0164 days <br />0.393 hours <br />0.00234 weeks <br />5.384075e-4 months <br />, commenced a power reduction to 75% to inver.tigate leakage at the spectacle flange on the "B' high pressure heater line.

880311 At 1443 hours0.0167 days <br />0.401 hours <br />0.00239 weeks <br />5.490615e-4 months <br />, isolated the "B" high pressure heater line for temporary repair work.

(See Unit Shutdowns and Power Reductions) 880311 At 1505 hours0.0174 days <br />0.418 hours <br />0.00249 weeks <br />5.726525e-4 months <br />, initiated control rod exercising.

(See Unit Shutdowns and power Reductions) 880311 At 1642 hours0.019 days <br />0.456 hours <br />0.00271 weeks <br />6.24781e-4 months <br />, completed control rod exercising.

880311 At 1800 hours0.0208 days <br />0.5 hours <br />0.00298 weeks <br />6.849e-4 months <br />, temporary repair work completed and the "B" high pressure heater line was returned to service.

880311 At 1815 hours0.021 days <br />0.504 hours <br />0.003 weeks <br />6.906075e-4 months <br />, commenced t'trbine surveillance.

880311 At 1835 hours0.0212 days <br />0.51 hours <br />0.00303 weeks <br />6.982175e-4 months <br />, completed turbine surveillance and a return to full power was initiated.

880319 At 0630 hours0.00729 days <br />0.175 hours <br />0.00104 weeks <br />2.39715e-4 months <br />, initiated a power reduction to minimum recir-culation flow to perform scheduled maintenance and surveillance testing.

880319 At 1200 hours0.0139 days <br />0.333 hours <br />0.00198 weeks <br />4.566e-4 months <br />, completed curveillance testing and initiated a rod pattern exchange.

(See Unit Shutdowns and Power Reductions) 880319 At 1237 hours0.0143 days <br />0.344 hours <br />0.00205 weeks <br />4.706785e-4 months <br />, completed the rod pattern exchange.

880319 At 1715 hours0.0198 days <br />0.476 hours <br />0.00284 weeks <br />6.525575e-4 months <br />, completed scheduied maintenance and a return to full power was initiated.

,,u',. 4 % of At the end of the reporting period the plant was operating at c

rated thermal power.

VYOPF 0411.04 Rev. 1

.7g.

VERMONT YANKEE NUCLEAR POWER CORPORATION w

P. O. BOX 157 GOVERNOR IIUNT ROAD VElul0N, VERMONT 05354 April 10, 1988 VYV 88-064 U. S. Nuclear Regulatory Commission Director, Office of. Management Information and Program Control Washington, D. C.

20555 Dear Sir SubgttedherewithistheMonthlyStatisticalReportfortheVermontYankee Nuclear Power Station for the month of March, 1988.

Very truly yours, VERl10NT YANKEE NUCLEAR POWER CORP.

$dt 0** V Warren. Murphy

)

j Vice P sident ant /

Manage of Operations VYDPF 0411 Rev. 1 s\\

i