BVY-96-072, Monthly Operating Rept for May 1996 for Vermont Yankee Nuclear Power Station

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Monthly Operating Rept for May 1996 for Vermont Yankee Nuclear Power Station
ML20112G403
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 05/31/1996
From: Wallin G, Wanczyk R
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-96-072, BVY-96-72, VY-RE-96-013, VY-RE-96-13, NUDOCS 9606110412
Download: ML20112G403 (6)
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VERMONT YANKEE

' l NUCLEAR POWER CORPORATION l .  ;

-  % P.O. Box 157, Governor Hunt Road Vernon, Vermont 05354-0157 (s {

g, (802) 257-7711 l .

! l June 10, 1996 1 l VY-RE-96-013  !

BVY-96-072 U.S. Nuclear Regulatory Commission Attn: Document Control Desk

Washington, D.C. 20555 l

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Reference:

a) License No. DPR-28 (Docket No. 50-271)

! In accordance with section 6.7.A.3 of the Vermont Yankee Technical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of May. 1996, i

Sincerely, Vermont Yankee Nuclear Power Corp.

Rober J. Wanczyk Plant Manager cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Manager - VYNPS l

l t 110081 (

9606110412 960531 PDR ADOCK 05000271- )

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VERMONT YANKEE NUCLEAR POWER STATION i i 4 )

i MONTHLY STATISTICAL REPORT 96-05 i

FOR THE MONTH OF MAY 1996

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1 DP 0411 Rev. 6 Page 1 of 1

.. OPERATING DATA REPORT DOCKET NO.50-271 DATE 960610 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

.1._ Unit Name: Vermont Yankee l 2. Reporting Period: May l

~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 (Items Number 3.through 7) since last-report, give reasons:
9. Power level to which restricted, if any(Net MWe): N/A
10. Reasono for restrictions, if any: ,

N/A This Month Yr-to-Date Cumulative

11. Hours in Reporting Period 744.00 3647.00 205991.00
12. Number Of Hours Reactor was Critical 744.00 3647.00 171128.03
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 744.00 3647.00 167898.63
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1167963.20 5772442.45 251855201.35
17. Gross Electrical Energy Generatal 403200.00 1997287.00 84082794.00
18. Net Electrical Energy Generated [?WH) 387147.00 1920170.00 79937269.00
19. Unit Service Factor 100.00 100.00 81.51
20. Unit Availability Factor 100.00 100 ,00 81.51
21. Unit Capacity Factor (Using MDC Net) 102.00 103.20 76.30
22. Unit Capacity Factor (Using DER Net) 99.70 100.90 74.80
23. Unit Forced Outage Rate 0.00 0.00 4.69
24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each: 1996 Refuelinu Outace scheduled to becin on September 7. 1996 and end on October 6. 1996.
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 l COMMERCIAL OPERATION l

i VYDPF 0411.01 i DP 0411 Rev. 6 I

Paga 1.of 1 RT No. 13.F01.19F

AVERAGE DAILY UNIT POWER LEVEL i '

l DOCKET No. 50-271 l UNIT Vermont Yankee DATE 960610

( COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH 1i02 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL l (MWe-Net) (MWe-Net)

! 1. 530 17. 529 l

2. 531 18. 529
3. 530 19. 528 1
4. 530 20. 528 l S. 529 21. 519 529 527
6. 22.
7. 523 23. 526
8. 529 24. 527 l
9. 529 25. 526
10. 529 26. 527 l

1 i 11. 529 27. 526

12. 529 28. 527 l 13. 529 29. 474

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14. 528 30. 382 15, 526 31. 497 16, 529 l

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  ;

msgawatt. )

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[ VYDPF 0411.02 l DP 0411 Rev. 6 .

Page 1 of 1 )

RT No. 13.F01.18V i i

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r UNIT SHUTDOWNS AND POWER REDUCTIONS .

4 REPORT MONTH MAY DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 960610 COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 1 2 3 4 5 Noe Date Type Duration Reason Method of License System Component Cause and Corrective (hours) Shutting Event Code Code Action to Prevent Down Report # Recurrence ,

Reactor i 96-05 960529 S 0.00 B 4 N/A RB VALVE Scram Solenoid Pilot Power valve maintenance and Reduction testing.

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)

. . DOCKET NO. 50-271 DATE 960610 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH May

SUMMARY

OF OPERATING EXPERIENCES Hiahliahts Vermont Yankee operated at 98.5% of rated thermal power for the month.

Gross electrical generation was 403,200 MWHe or 99.3% design electrical capacity.

Operatina 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%

of rated thermal power.

960516 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 requirements as delineated by our NPDES permit. These requirements, based on upstream river temperature, define

. operation of the Circulation Water system in open, hybrid or closed cycle.

960529 At 1607 hours0.0186 days <br />0.446 hours <br />0.00266 weeks <br />6.114635e-4 months <br />, decreasing power to approximately 80% to perform maintenance and testing on sixty-four scram solenoid pilot valves. (See Unit Shutdowns and Power Reductions) 960529 At 1710 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.50655e-4 months <br />, commenced scram solenoid pilot valve' maintenance i

and testing.

l 960531 At 0135 hours0.00156 days <br />0.0375 hours <br />2.232143e-4 weeks <br />5.13675e-5 months <br />, completed scram solenoid pilot valve maintenance

l. and testing.

l 960531 At 0255 hours0.00295 days <br />0.0708 hours <br />4.21627e-4 weeks <br />9.70275e-5 months <br />, commenced a return to full power, i

At the end of the reporting period the plant was operating at 99.8% of rated thermal power.

4 VYDPF 0411.04 DP~0411 Rev. 6 Page 1 of 1

.RT No. 13.F01.18X

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