ML20087F186

Monthly Operating Rept for Jul 1995 for Vermont Yankee Nuclear Power Station

ML20087F186
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/31/1995
From:	Wallin G, Wanczyk R VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-95-82, VY-RCE-95-018, VY-RCE-95-18, NUDOCS 9508150179
Download: ML20087F186 (6)

Text

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TERMONT YANKEE-j NUCLEAR POWER CORPORATION s.

P.O. Box 157, Governor Hunt Road

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J Vernon, Vermont 05354-0157 (802) 257-7711 I '.

August 10, 1995 VY-RCE-95-018 BVY-95-82 I

U.S.

Nuclear Regulatory Commission Attn:

Document Control Desk Washington, D.C.

20555

Reference:

a)

License No. DPR-28 (Docket No. 50-271) i In accordance with section 6.7.A.3 of the Vermont Yankee Technical Specifications, submitted herewith is the Monthly l

Statistical Report for the Vermont Yankee Nuclear Power Station for the month of July, 1995.

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Sincerely, Vermont Yankee. Nuclear Power Corp.

Robert J.

3 nczyk Plant. Manager cc:

USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Mananger - VYNPS E

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.o 9508150179 950731

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VERMONT YANKEE NUCLEAR POWER STATION -

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i MONTHLY STATISTICAL REPORT 95-07' i

FOR THE MONTH OF JULY 1995 i

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OPERATING DATA REPORT-DOCKET NO.50-271 DATE 950810 1

COMPLETED BY G.A.

WALLIN TELEPHONE (802)258-5414' OPERATING STATUS

1. Unit Name:

Vermont Yankee 2.

Reporting Period:

Julv NOTES:

3. Licensed Thermal Power (MWt):1593

4. Nameplate Rating (Gross MWe): 540 5.

Design Electrical Rating (Net MWe):

122

6. Maximum Dependable Capacity (Gross MWe):

535 7._ Maximum Dependable Capacity (Net MWe):

510 8.

If changes, occur in capacity ratings (Itams Number 3 through 7) since last report, give reasons:

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 198671.00

12. Number Of Hours Reactor was Critical 744.00 4000.96 163864.62

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 744.00 3951.45 160668.56

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00.

16. Gross Thermal Energy Generated (MWH) 1181447.35 6191916.60 240361791.60

17. Gross Electrical Energy Generated 393819.00 2094331.00 80131683.00

18. Net Electrical Energy Generated (MWH) 371194.00 1996413.00 76158987.00

19. Unit Service Factor 100.00 77.68 80.87

20. Unit Availability Factor 100.00 77.68 80.87

21. Unit Capacity Factor (Using MDC Net) 97.83 76.95 75.17

22. Unit Capacity Factor (Using DER Net) 95.58 75.18' 73.44'

23. Unit Forced Outage Rate 0.00 0.00 4.85

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 COMMERCIAL OPERATION VYDPF 0411.01 DP 0411 Rev. 6 i

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1 AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 950810 COMPLETED BY G.A.

WALLIN-TELEPHONE (802)258-5414 MONTH Julv DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net) 1.

499 17.

504 2.

500 18.

502 3.

505 19.

509 4.

503 20.

504 5.

500 21.

498 6.

497 22.

501 7.

498 23.

498 8.

499 24.

499 9.

503 25.

487 10.

501 26.

492 11.

479 27.

501 12.

501 28.

502 13.

497 29.

497 14.

494 30.

505 15.

490 31.

301 16.

499 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. 6 Page 1 of 1 RT No. 13.F01.18V

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH JULY DOCKET NO 50-271 UNIT NAME Vermont Yankee" DATE 950810 COMPLETED BY G.A. Wal-lin TELEPHONE (802)258-5414-1 2

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5 No.

Date Type Duration Reason Method of License System Component

'Cause and. Corrective (hours)

Shutting Event Code Code Action.to Prevent Down Report /

Recurrence Reactor 95-05 950711 S

0.00 B,H*

4 N/A RB' CONROD Bypass valve tests; Power MSIV full closure test Reduction and a rod pattern exchange 1

F: Forced 2_ Reason:

3 Method:

4 Exhibit G-Instructions S: Scheduled.

A-Equipment Failure-(Explain)'

1 -- Manual for, Preparation of Data B-Maintenance or Test 2 - Manual Scram Entry Sheets for License C-Refueling 3 - Automatic Scram Event Report (LER) File

'D-Regulatory Restriction 4 - Other (Explain)

(NUREG 0161)-

E-Operator Training'and License Examination 5 Exhibit I - Same Source VYDPF 0411.03 F-Administrative DP 0411 Rev. 6

.G-Operational-Error (Explain)

Page 1 of 1

• H-(Explain) - Rod Pattern Exchange i

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DOCKET NO. 50-271 DATE 950810 COMPLETED BY G.A.

WALLIN t

TELEPHONE (802)258-5414 i

Li REPORT MONTH Julv

SUMMARY

-OF OPERATING EXPERIENCES

-Hiahliahts

.1 Vermont Yankee operated at 99.7% of rated thermal power for the month.

Gross electrical generation was 393,819 MWHe or 96.9% design electrical

. capacity.

j Operatina Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:

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

of rated thermal power.

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950711 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' j

flow to perform turbine bypass valve tests, MSIV full closure-i tests, and a rod pattern exchange.

(See Unit Shutdowns and Power Reductions) 950711 At 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br />, initiated turbine bypass valve testing.

i 950711 At 0240 hours0.00278 days <br />0.0667 hours <br />3.968254e-4 weeks <br />9.132e-5 months <br />, completed turbine bypass valve testing.

950711 At 0247 hours0.00286 days <br />0.0686 hours <br />4.083995e-4 weeks <br />9.39835e-5 months <br />, initiated MSIV fast closure testing.

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950711 At 0252 hours0.00292 days <br />0.07 hours <br />4.166667e-4 weeks <br />9.5886e-5 months <br />, completed MSIV fast closure testing.

950711 At 0255 hours0.00295 days <br />0.0708 hours <br />4.21627e-4 weeks <br />9.70275e-5 months <br />, initiated a rod pattern exchange.

950711 At 0316 hours0.00366 days <br />0.0878 hours <br />5.224868e-4 weeks <br />1.20238e-4 months <br />, completed the rod pattern exchange.

950711 At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />, initiated a return to full power..-

j At the end of the reporting period the plant was operating at 99.9% of rated thermal power.

VYDPF 0411.04 DP 0411 Rev. 6 Page 1 of 1 RT No. 13.F01.18X