BVY-97-074, Monthly Operating Rept for May 1997 for Vermont Yankee Nuclear Power Station

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Monthly Operating Rept for May 1997 for Vermont Yankee Nuclear Power Station
ML20140H314
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 05/31/1997
From: Maret G, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-97-074, BVY-97-74, NUDOCS 9706180171
Download: ML20140H314 (6)
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_ . . - . . , . . . . . . - . . - _ , - . . -- .

VERMONT' YANKEE l

' NUCLEAR POWER CORPORATION -

! r% % P.O. Box 157, Governor Hunt Road

'[ Vernon, Vermont 05354-0157 s

. _ , . /, (802) 257-7711 f x..

June,101997 BVY-97-074 l

United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Reference:

(a) License No. DPR-28 (Docket No. 50-271) l In accordance with section 6.7.A.3 of the Vermont Yankee Tecimical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of May.1997.

Sincerely, 1

VE i JT EENUCLEAR POWERCORPORATION 4

Q~

l Greg . M aret Plant Manager cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS p USNRC Project Manager - VYNPS p

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i 9706180171 970531 PDR ADOCK 03000271 R PDR

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VERMONT YANKEE NUCLEAR POWER STATION MONTIILY STATISTICAL REPORT 97-05 FOR TIIE MONTII OF MAY 1997 DP 0411 Rev. 6 Page1 of1 l

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, OPERATING DATA REPORT DOCKET NO.50-271 DATE 970610 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 l OPERATING STATUS

1. Unit Name: Vermont Yankee
2. Reporting Period: May
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rating (Gross MWe) : 112
5. Design Electrical Rating (Net MWe) : 122 ,

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6. Maximum Dependable Capacity (Gross MWe): 525
7. Maximum Dependable Capacity (Net MWe): 512
8. If changes, occur in capacity ratings (Items 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 l
11. Hours in Reporting Period 744.00 3623.00 214751.00 l
12. Number Of Hours Reactor was Critical 597.37 3317.54 178284.20
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00 i
14. Hours Generator On-Line 565.87 3286.04 174959.94
15. Unit Reserve Shutdown Hours 0.00 C.maq 0.00
16. Gross Thermal Energy Generated (MWH) 889693.40 5213848.80 262860982.20
17. Gross Electrical Energy Generated 304949.00 1797381.00 87848803.00
18. Net Electrical Energy Generated (MWH) 292454.00 1728035.00 83543924.00 l
19. Unit Service Factor 76.00 90.70 80.80 )
20. Unit Availability Factor 76.00 90.70 80.80 j
31. Unit Capacity Factor (Using MDC Net) 77.10 93.50 76.50 ;
22. Unit Capacity Factor (Using DER Net) 75.30 91.40 75.00
23. Unit Forced Outage Rate 20.5R_ 7.10 4.65 l
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 i

VYDPF 0411.01

! DP 0411 Rev. 6 Page 1 of 1 RT No. 13.F01.19F

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 970610 l COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH May DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 0 17. 524
2. 0 18. 526
3. 0 19. 527
4. 0 20. 527
5. 0 . 21. 527
6. 0 22. 526 7, 0 23. 522
8. 142 24, 526
9. 491 25. 527
10. 515 26. 526 )

11, 528 27. 52i

12. 518 28. 524
13. 528 29. 524
14. 528 30. 524
15. 527 31. 526
16. 527 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 l

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UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH MAY DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 970610 COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 1 2 3 4 5 No. Date Type Duration Reason ' Method of License System Component Cause and Corrective 1

(hours) Shutting Event Code Code Action to Prevent Down Report # Recurrence Reactor 97-04 970501 F 146.63 B 3 N/A EB TRANSF Mini-Outage Repairs (cont) 97-04 970501 S 31.50 B 3 N/A EB TRANSF Mini-Outage Repairs (cont) 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 9

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, DOCKET NO. 50-271 DATE 970610

. COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH May

SUMMARY

OF OPERATING EXPERIENCES JIiahliahts Ver' cont Yankee operated at 75.1% of rated thermal power for the month.

Gross electrical generation was 304,949 MWHe or 75.1% design electrical capacity.

.Oneratina Summary The following is a chronological description of plant operations including  !

other pertinent items of interest fJr the month:

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1 At the beginning of the reporting period the plant was operating at 00.0% )

of rated thermal power. l 970507 At 0238 hours0.00275 days <br />0.0661 hours <br />3.935185e-4 weeks <br />9.0559e-5 months <br />, the reactor was critical following completion of the j mini-outage. (See Unit Shutdowns and Power Reductions) l l

970508 At 1008 hours0.0117 days <br />0.28 hours <br />0.00167 weeks <br />3.83544e-4 months <br />, the turbine-generator was phased to the grid, and a  !

return to full power was initiated. l 1

970516 At 0001 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />, began complying with stricter thermal discharge i requirements as delineated by our NPDES permit. These requirements, I based on upstream river temperature, define operation of the Circulation Water system in open, hybrid or closed cycle.

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l 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

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