ML20245G420

Monthly Operating Rept for Jul 1989 for Vermont Yankee Nuclear Power Station

ML20245G420
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/31/1989
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
VYV-89-146, NUDOCS 8908150400
Download: ML20245G420 (7)

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? 5 VERMONTYANKEE NUCLEAR POWER CORPORATION -

P 'O. BOX 157 GOVERNOR HUNT ROAD VERNON, VERMONT 05354 August 10, 1989 VYV 89-;146 m'

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.U.S. Nuclear Regulatory Commission ATTN:., Document Control Desk

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Washington',-D.C.

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Dear Sir:

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Submitted-herewith is the Monthly statistical. Report for the

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Vermont Yankee Nuclear Power' Station for the month ~of July, 1989.

very truly yours, j

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VERMONT YANKEE NUCLEAR POWER CORP.

[ de n Mulph

// w Warren P Vice Pre ident d

Manager of Ope ns cc:

1) USNRC Region I 475 Allendale Road King of Prussia, PA 19406 2).'USNRC

' Resident Inspector, VYNPS

DP 0411: Rev. 2 Page 1 of-1 h

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VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 89-07 FOR THE MONTH OF JULY, 1989 DP 0411 Rev. 2 Page 1 of 1 l

OPERATING DATA REPORT DOCKET NO.

50-271 DATE 890810 COMPLETED BY G.A.

Wallin TELEPHONE (802)257-7711 OPERATING STATUS 1.

Unit Name:

Vermont Yankee NOTES:

2.

Reporting Period:

July 3.

Licensed Thermal Power (MWt):

1593 4.

Namepla te Rating (Gross MWe):

540 5.

Design Electrical Rating (Net MWe): 514(oc) 504(cc)

.6.

Maximum Dependable Capacity (Grocs 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 744.00 3743.18 116992.86 13.

Reactor Reserve. Shutdown Hours 0.00 0.00 0.00 114.

Hours Generator On-Line 744.00 3700.65 114304.07 15.

Unit Reserve Shutdown Hours 0.00 0.00 0.00' 16.

Gross Thermal Energy Generated (MWH)1152635.00 5543435.00 168240141.00

'17.

Gross Electrical Energy Generated 376852.00 1853462.00 56015833.00 18.

Net Electrical Energy Generated (MWH)353850.00 1764105.00 53173027.00

' 19.

Unit Service Factor 100.00 72.75 77.34 100.00 72.75 77.34 20.

Unit Availability Factor 94.37 68.81 71.39 21.

Unit Capacity Factor (Using MDC Net) 22.

Unit' Capacity Factor (Using DER Net) 92.53 67.47 70.00 23.

Unit Forced Outage Rate 0.00 0.00 5.90 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 INITIAL ELECTRICITY I

COMMERCIAL OPERATION l

VYDPF 0411.01

DP 0411.Rev. 2 Page 1 of 1 RT No. 13.FO1.19F 1

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' AVERAGE DAILY UNIT POWER LEVEL-DOCKET NO. 50-271 UNIT Vermont Yankee DATE 890810 COMPLETED BY G.A.

Wallin TELEPHONE (802)257-7711 MONTH July DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

484 17.

492

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2.

474 18.

489 l

3.

482 19.

487 4.-

490 20.

490 5.

492 21.

490 6.

493 22.

487 4

7.

492 23.

484 8.

268 24.

486 9.

428 25.

484 10, 484 26, 484 11.

492 27.

484 12.

502 28.

488 13.

499 29.

445 14.

493 30.

411 15.

492 31.

486 16.

490

. 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 DP 0411 Rev. 2 Page 1 of 1 RT No. 13.FO1.18V L________

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^L DOCKET NO. 50-271~

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UNIT Vermont Yankno-

'DATE 890810 f-COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 i-4 REPORT MONTH July

SUMMARY

'OF OPERATING EXPERIENCES-Highlights

~ Vermont Yankee operated at 97.3% of rated' thermal power for the month.

LGross electrical generation was 376,852 MWHe or 93.8% design electrical capacity.

Operating 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 99.9%

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of rated thermal power.

890708 At 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br />,' initiated a power reduction to minimum recirculation

flow to perform scheduled maintenance, turbine surveillance, control rod exercising, bypass valve testing and a rod. pattern adjustment.

890708. At 0437 hours0.00506 days <br />0.121 hours <br />7.225529e-4 weeks <br />1.662785e-4 months <br />, at 40% power secured the."A"1 recirculation pump for MG set brush replacement. (See Unit Shutdowns and Power Reductions) 890708 At 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, started turbine surveillance, control rod exercising, and bypass valve tesing. (See Unit Shutdowns and Power Reductions) 890708-At 0540 hours0.00625 days <br />0.15 hours <br />8.928571e-4 weeks <br />2.0547e-4 months <br />, completed turbine surveillance, control rod exercising, and bypass valve tesing.

.890708 At'0625 hours0.00723 days <br />0.174 hours <br />0.00103 weeks <br />2.378125e-4 months <br />, started the "A" recirculation pump'following MG set brush replacement.

890708 At 0658 hours0.00762 days <br />0.183 hours <br />0.00109 weeks <br />2.50369e-4 months <br />, secured the "B"

recirculation pump for MG set brush replacement. (See. Unit Shutdowns and Power Reductions) 890700 At 1103 hours0.0128 days <br />0.306 hours <br />0.00182 weeks <br />4.196915e-4 months <br />, started the "B" recirculation pump following MG set brush replacement.

890708 At 1222 hours0.0141 days <br />0.339 hours <br />0.00202 weeks <br />4.64971e-4 months <br />, initiated a rod pattern adjustment.(See Unit Shudowns and Power Reductions) 890709-At'0308 hours0.00356 days <br />0.0856 hours <br />5.092593e-4 weeks <br />1.17194e-4 months <br />, completed the rod pattern adjustment and began a l

return to full power.

J At the end of the reporting period the plant was operating at 99.4% of rated thermal power, j

l VYDPF 0411.04 DP 0411 Rev. 2 3

Page 1.of 1 RT No. 13.F01.18X I

L11__=-.__. -_ _ _ -

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DOCKET NO. 50-271

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UNIT Vermont Ycnkee DATE 890810 COMPLETED BY G.A.

Wallin TELEPHONE (802)257-7711 REPORT MONTH July

SUMMARY

OF OPERATING EXPERIENCES - CONTINUED Highlights

-Vermont Yankee operated at 97.3% of rated thermal power for the month.

Gross electrical generation was 376,852 MWHe or 93.8% design electrical capacity.

Operating Summary The following is a chronological description of plant operations including i

other pertinent items of interest for the month:

At the beginning of the reporting period the plant was operating at 99.9%

of rated thermal power.

890729 At 1700' hours, initiated a power reduction to 65% to perform turbine surveillance, control rod exercising, and a rod pattern exchange.

890729 At 1912 hours0.0221 days <br />0.531 hours <br />0.00316 weeks <br />7.27516e-4 months <br />, started turbine surveillance and control rod exercising. (See Unit Shutdowns and Power Reductions) 890729 At 2043 hours0.0236 days <br />0.568 hours <br />0.00338 weeks <br />7.773615e-4 months <br />, completed turbine surveillance and control rod exercising.

890729 At 2048 hours0.0237 days <br />0.569 hours <br />0.00339 weeks <br />7.79264e-4 months <br />, started the rod pattern exchange. (See Unit Shutdowns and Power Reductions) 890729 At 2256 hours0.0261 days <br />0.627 hours <br />0.00373 weeks <br />8.58408e-4 months <br />, completed the rod pattern exchange.

890730, At 0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br />, began a return to full power.

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At the end of the reporting period the plant was operating at 99.4% of rated thermal power.

1 VYDPF 0411.04 DP 0411 Rev. 2 j

l Page 1 of 1 RT No. 13.FOl.18X i

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