ML20059G834

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Monthly Statistical Rept for Aug 1990 for Vermont Yankee Nuclear Power Station
ML20059G834
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 08/31/1990
From: Murphy W, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
VYV-90-260, NUDOCS 9009130194
Download: ML20059G834 (6)


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f VERMONT YANKEE NUC

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GOVERNOR HUNT ROAD -;

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i U.S. Nuclher Regulatory Commiasion.

. ATTNi' DocumMnt-Control Desk.

Washington,1D'.'.'- 20555

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Dear:

Sir

' submitted herewith is the Monthly StatisticalhReport for the.

vermont Yankee Nuclear. Power' Station for thecmonth of August,'1990.

4 Very;truly yours,-

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l' VERMONT YANKEE: NUCLEAR POWER' CORP.

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Warren-P. Mu,tphy y

-SeniorVice[ President, pe r ions' l

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1) USNRC
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King of' Prussia,'PA 19406'

2) USNRC Resident-Inspector, VYNPS DP-0411'Rev. 3

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i 9009130194 900831

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PDR ALOCK 05000271

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V VERMONT: YANKEE NUCLEARr:POWERLSTATION~

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l MONTHLY.' STATISTICAL.REPORTc90- 8i

.FOR.THE.M'ONTH OriAOGUST,y 1990_'

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OPERATING DATA REPORTI J'-

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DOCKET,NO..-50-271-DATE 900910

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-COMPLETED BY G.A. Wallin TELEPHONE-(802)257-7711 g

OPERATING STATUS 1.

Unit Name.

Vermont Yankee NOTES:

4 2,

Reporting Period:

August-3.

' Licensed.LThermal Power (MWt):

1593 1

4.

.NameplateLRating(Gross MWe):

540-u 5.

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

Maximum Dependable capacity (Gross MWe): 535 7.

Maximum Dependable. Capacity (Net MWe):.

504 I

8.

If changes occur in capacity. ratings (Ite.99 Number 3Lthrough 7)since

-last. report,-give reasons:'

N/A i

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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 Period 744.00-5831.00 12.

Number Of Hours Reacter was Critical 741.05 5669.37 126335.23 13.

Reactor Reserve Shutdown Hours 0.00-0.00 0.00 14.

Hours Generator On-Line 738.58=

5580.36 123557.43

15. - Unit-Reserve Shutdown-Hours 0.00-0.30 0.00-16.

Gross Thermal Energy Generated (MWH)1042855.50 8570857.50' 182580414.00 17.

Gross Electrical Energy Generated 344619.00-2878197.00 60832086.00 18.

Net Electrical Energy Generated (MWH)321932.00 2738578.00 57754277.00 19.

Unit Service Factor 99.27 95.70 78.55 20.

Unit Availability Factor 99.271 95.73-78.55 21.

Unit Capacity Factor (Using MDC Net) 85.85.

93.19 72.85 22.

Unit Capacity Factor (Using DER Net) 84.18 91.37 71.43.

23.

Unit Forced Outage Rate 0.00

2. 26, _

5.57 24.

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

1990 Refueling Outage began on August' 31, 1990'for six.

weeks duration.

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-25.

If shut down at end of report period, estimated date of startup:10/15/90 L

26.

Units In Tet: "tatus(prior to commercial operation):: N/A Forecast Achieved In1 :AL CRITICALITY

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IN'*IAL ELECTRICITY Cl.iRCIAL OPERATION VYDPF 0411.01 L

DP 0411 Rev. 3 Page 1 of 1 RT No. 13.F01.19F P

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AVERAGE DAILY UNIT POWER' LEVEL

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50-271' UNIT.--Vermont Yankee DATE~ 900910

~COMPLFTED=BY-L-G.A.- Wallin TELEPHONE ~ (802)257-7711-

' MONTH-August DAY-: -AVERAGE DAILY POWER LEVEL' DAY AVERAGE DAILY POWER LEVEL

.(MWe-Net).

(MWe-Net) l 1.

452

' 17.

.439 j

2.

451 18..

439 3.

447 19. L 440

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447 27.

424 12, 445 28.

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418 14.

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420 15.

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INSTRUCTIONS:

4

. 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 negawatt.

VYDPF 0411.02 t

DP-0411 Rev. 3 i

Page 1 of 1

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UNIT SNUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 REPORT MONTH AUGUST UNIT NAME Persent Yankee DATE 900910 CONVLETED SY G.A.

Wallin T3LEPRONE (802)257-7711 1

2 Method of License System

- componac-

-Casse and corrective No.

Date Type.

Duration Reason Shutting Down Event Code Code' Action to.

(hours)

Reactor 3 Reporti 4_

5 Prevent Recurrence 90-08

-900831 S

5.42 C,B 1

N/A N/A N/A Shutdown for 19 90; Ref ueling/

Maintenance outage.

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i F: Forced 2 Reason:

3 Method:

4 Exhibit G-Instructions 55 Scheduled

.A-Equipment railure (Explaint 1-Manual' for Preparation of Data

" B-Maintenance or' Test

~ '2-Manual-Scram.

Entry Sheets for Licensee.

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C-Refueling

.3-Automatic Scram ' Event l Repo rt 'l( LER)' File

4-Other (Explain)

(NUREG 0161)

'l D-Regulatory Festriction.

Examination E-Operator Training'and License F-Administrative 5 Exhibit I - Same Source.

VYDPF 0411.03 G-Operational Error (Explain)

DP 0411 Rev. 3 H-$ Explain)

Page 1 of 1 1

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I DOCKET NO.- 50 271 -

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UNIT-Varnont Ynnkom-

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. COMPLETED BY G.A.-Wallin TELEPHONE (802)257-7711-f REPORT MONTH

. August 1

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SUMMARY

OF OPERATING EXPERIENCES-

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Highlights Vermont Yankee; operated at!88.0% of ratedLthermal power for the month.

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' Gross electrical generation was 344,619 MWHe or 85.8% design: electrical:

' capacity.

Op3ratinglSummary H

.Tha following is a-chronologicaI description of[ plant. operations i~ncluding:

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other pertinent. items'of-interest for the month:

'At=the beginning ofl(the; reporting period the plant was" operating at: 92.4%

of rated thermal power and continuing coasting down=to the end;of cycle..

900831.'At.1100. hours,'a reactor shutdown:was initiated for.the 19901 il Refueling / Maintenance outage. (See' Unit Stutdowns'and Power

,5

' Reductions).

~900831' 1At 1835 hours0.0212 days <br />0.51 hours <br />0.00303 weeks <br />6.982175e-4 months <br />, the generator was removed =from;the grid.

900831-At 2106. hours, the reactor was sub-critical..

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1' At the end of the reporting period the plant was shutdown for the-1990; L

Refueling / Maintenance outage.

VYDPF'0411.04 lDP 0411 Rev. 3 Page 1 of 1 LRT No. 13.F01.18X Y

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