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Monthly Operating Rept for May 1990 for Vermont Yankee Nuclear Power Station
	ML20043G127
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee 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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. VERhiONT YANKEE NUCLEAR POWER CORPORATION o

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GOVERNOR HUNT ROAD VERNON, VERMONT 05354 l

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June 10, 1990 VYV.90-178

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Nuclear Regulatory Commission ATTN: Document Control Desk washington, D.C.-

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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.

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$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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OPERATING DATA REPORT 3-DOCKET NO.

50-271 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

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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 l

11ast report, give reasons:

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

AVERAGE DAILY UNIT POWER LEVEL

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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) 1 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

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'12.

517 28.

516

.13.

=513-29.

514 q

l 14.

-516 30.

517 j

15.

513 31 '.

514

-16.

517

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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 2.777778e-4 hours 1.653439e-6 weeks 3.805e-7 months , 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 0.0556 hours 3.306878e-4 weeks 7.61e-5 months , initiated a power reduction to minimum recirculation flow to perform a rod pattern exchange.

.900519 At 0400 hours0.00463 days 0.111 hours 6.613757e-4 weeks 1.522e-4 months , started turbine surveillance at 79.0% power.

(see Unit Shutdowns and Power Reductions) 900519 At 0435 hours0.00503 days 0.121 hours 7.19246e-4 weeks 1.655175e-4 months , completed turbine surveillance.

900519 At 0455 hours0.00527 days 0.126 hours 7.523148e-4 weeks 1.731275e-4 months , initiated a rod pattern exchange.

(See Unit Shutdowns and Power Reductions) 900519 At 0725 hours0.00839 days 0.201 hours 0.0012 weeks 2.758625e-4 months , compluted the rod pattern exchange.

900519 At 0730 hours0.00845 days 0.203 hours 0.00121 weeks 2.77765e-4 months , began a return to full power.

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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

ML20043G127

Text

Dear Sir:

SUMMARY

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