ML20043G127

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Monthly Operating Rept for May 1990 for Vermont Yankee Nuclear Power Station.W/900610 Ltr
ML20043G127
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 05/31/1990
From: Cihak J, Murphy W
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
VYV-90-178, NUDOCS 9006190095
Download: ML20043G127 (6)
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i . VERhiONT YANKEE NUCLEAR POWER CORPORATION

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o , P. O. BOX 157 GOVERNOR HUNT ROAD

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June 10, 1990 VYV.90-178

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"li U*.S. Nuclear Regulatory Commission ATTN: Document Control Desk washington, D.C.- 20555 J

Dear Sir:

Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of May, 1990, j Very truly yours,

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i VERMON YANKEE NUCLEAR POWER. CORP. l

$4^ M Warren P. urphy l_

Senior Vice Presi nt Operations l

' cc : - 1) USNRC Region I 475 Allendale Road "

King . of = Prussia, PA '19406

2) USNRC Resident Inspector, VYNPS i DP'0411 Rev. 3 Page'l of 1 6

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. VERMONT YANKEE NUCLEAR POWER STATION 1

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MONTHLY. STATISTICAL REPORT 90-05  !

FOR THE MONTH OF MAY, 1990 1!

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l-l l' 'DP'0411: Rev. 3 Page.1'of 1 g

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OPERATING DATA REPORT 50-271 3- DOCKET NO.

DATE 900610- l E COMPLETED BY J. Cihak  !

TELEPHONE (802)257-7711' -j OPERATING STATUS

________________- 1

1, Unit Name:= Vermont Yankee I

NOTES:

-2,' . Reporting Period: May

3. Licensed Thermal Power (MWt): 1593 i
4. Nameplate Rating (Gross MWe): 540 l l 1
5. Design Electrical Rating (Net MWe): 514(oc) 504(cc)  ;

'6.- ' Maximum Dependable Capacity (Gross MWe): 535 r .

7. Maximum Dependable capacity (Net MWe): 504 q 18 . - If changes occur in capacity ratings (Items Number 3 through 7)since 11ast report, give reasons:

l 1 N/A j

9. Power level to which restricted, if any(Net MWe): N/A i
10. Reasons for restrictions, if any: .N/A This Month Yr-to-Date Cumulative

-11.- Hours In Reporting Period 744.00 3623.00 -----

12. Number Of Hours Reactor was Critical 744.00 3493.52 124159.38 1
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00 l
14. -Hours Generator On-Line 744.00 3415.61 121392.68
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00 i
16. .. Gross Thermal Energy Generated (MWH)1169372.00 5369981.50 179379538.00 j

-17. Gross Electrical Energy Generated 396243.00 1818355.00 59772244.00 k 18. Net Electrical Energy Generated (MWH)379406.00 1743364.00 56759063.00 l

19. Unit-Service Factor 100.00 94.28 78.27 '

2 0. - Unit Availability Factor .

100.00 94.28 78.27 j

21. -Unit Capacity Factor (Using MDC Net) 101.18 95.47 72.62  :

22,' Unit Capacity Factor (Using DER Net) 99.21 93.62 71.20 L2 3. ' Unit Forced Outage Rate 0.00 2.62 5.64

24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each): 1990 Refueling Outage scheduled to begin on September 1, 1990 l and conclude on October 13, 1990.  ;

i L25. -If. shut down at end of ' report period, estimated date of startup: N/A 126. Units In Test Status (prior to commercial operation): N/A 4 Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

.DP 0411 Rev.,3 Page 1 of 1 RT-No. 13.FO1.19F 1

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AVERAGE DAILY UNIT POWER LEVEL 1

DOCKET-NO. 50-271 UNIT Vermont Yankee- 'l DATE 900610-COMPLETED BY J. Cihak- 1 TELEPHONE -(802)257-7711 j

' MONTH-' .May j i

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL l

(MWe-Net) (MWe-Net)  ;

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1. 518 17. 517 I

~2. 519 18. 517 3 -.

517 19. 401 .

4. 518 20, 474
5. 517 21. 513 .

'6. 476 22, 517 l

7. 516 23. 516 8.- 517 24. 517
9. 516 25.- 516 l 10 '. 518 26, 517 l

11, 517 27. 514 .q

'12. 517 28. 516

.13. =513- 29. 514 q

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14. -516 30. 517 j
15. 513 31 '. 514  !

-16. 517 +

INSTRUCTIONS:

On:this format, list the average daily

. it power level in MWe-Net for..each' day-in he reporting month. - pute to the nearest whole ,

-megawatt.

VYDPF-0411.02.

DP 0411 Rev. 3 Page 1 of 1

RT No. 13.F01.18V i

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c DOCKET No. 50-271 l

. UNIT VerC:nt Y0nkCe

, DATE 900610 COMPLETED BY J. Cihak e TELEPHONE (802)257-7711

, REPORT MONTH May
  • W.MM.-

SUMMARY

Or OPERATING EXPERIENCES Highlights Varmont Yankee operated at 98.7% of rated thermal power for the month.

Gross electrical generation was 396,243 MWHe or 98.6% design electrical capacity.

Operating Sukuary Tha following is a chronological description of plant operations including other pertinent items of interest for t1e month:

At the beginning of the reporting period the plant was operating at 99.8%

of rated thermal power.

900516 At 0001 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, began cooling tower operations and went to a hybrid cycle of operation. Varying modes of cycle operation from this point on will be based upon river temperature considarations.

900519 At 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, initiated a power reduction to minimum recirculation flow to perform a rod pattern exchange.

.900519 At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />, started turbine surveillance at 79.0% power. (see Unit Shutdowns and Power Reductions) 900519 At 0435 hours0.00503 days <br />0.121 hours <br />7.19246e-4 weeks <br />1.655175e-4 months <br />, completed turbine surveillance.

900519 At 0455 hours0.00527 days <br />0.126 hours <br />7.523148e-4 weeks <br />1.731275e-4 months <br />, initiated a rod pattern exchange. (See Unit Shutdowns and Power Reductions) 900519 At 0725 hours0.00839 days <br />0.201 hours <br />0.0012 weeks <br />2.758625e-4 months <br />, compluted the rod pattern exchange.

900519 At 0730 hours0.00845 days <br />0.203 hours <br />0.00121 weeks <br />2.77765e-4 months <br />, began a return to full power. l 1

At the end of the reporting period the plant was operating at 100% of rated thermal power.

VYDPr 0411.04 DP 0411 Rev. 3 PCge 1 of 1 RT No. 13.rO1.18X 4

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