ML20077R303

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Monthly Operating Rept for Dec 1994 for VT Yankee Nuclear Power Station
ML20077R303
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 12/31/1994
From: Reid D, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-95-03, BVY-95-3, VY-RCE-95-001, VY-RCE-95-1, NUDOCS 9501200138
Download: ML20077R303 (6)
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VdRMONT YANKEE

NUCLEAR POWER CORPORATION i P.O. Box 157. Governor Hunt Road I N Vernon, Vermont 05354-0157

.j (802) 257-7711 i

January 10,1995  ;

VY-RCE-95-001 BVY 95-03 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C. 20555

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 December.1994. i Sincerely,

- i Vermont Yankee Nuclear Power Corp. l 1

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Donald A. Reid h  :

Vice President, Operations cc: USNRC Region I Administrator i USNRC Resident Inspector - VYNPS l USNRC Project Mananger - VYNPS l 4 n r.r. m .,

95012'00138 941231 1 PDR ADOCK 0500 R L ,

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VERMONT YANKEE NUCLEAR POWER STATION MONTIILY STATISTICAL REPORT 94-12 FOR TIIE MONTH OF DECEMBER 1994 l

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DP 0411 Rev. 5 Page 1 ofI i

OPERATING DATA REPORT DOCKET NO.50-271 DATE 950110 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 OPERATING STATHE

1. Unit Name: Vermont Yankee
2. Reporting Period: December NOTES:
3. Licensed Thermal Power (MWt) :1593
4. Nameplate Rating (Gross MWe): Ein
5. Design Electrical Rating (Net MWe): 514(oc) 504 (cc)
6. Maximum Dependable Capacity (Gross MWe) : 111
7. Maximum Dependable Capacity (Net MWe): ERA
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 8760.00 193584.00
12. Number Of Hours Reactor was Critical 744.00 8646.25 159143.66
13. Reactor Reserve Shutdown Hours 0.00 *D.00 0.00
14. Hours Generator On-Line 744.00 8601.49 156717.11
15. Unit Reserve Shutdown Hours 0.00 0.00 0 . 0.2
16. Gross Thermal Energy Generated (MWH) 1181396.20 13464203.50 234169875.00
17. Gross Electrical Energy Generated 400509.00 4517970.00 78037352.00
18. Net Electrical Energy Generated (MWH) 384825.00 4315550.00 74162574.00
19. Unit Service Factor 100.00 98.19 80.96
20. Unit Availability Factor 100.00 98.19 80.96
21. Unit Capacity Factor (Using MDC Net) 102.63 97.75 76.01
22. Unit Capacity Factor (Using DER Net) 100.63 95.84 74.5.1
23. Unit Forced Outage Rate 0.00 1.20 4.97
24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each: 1995 Refuelina Outace scheduled to begin on March 18, 1995 and last for a six week period.
25. If shut down at end of report period, estimated date of startup:N/A
26. Units In Test E tatus (prior to commercial operation) : N/A Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION l VYDPF 0411.01 DP 0411 Rev. 5 l Page 1 of 1 RT No. 13.F01.19F

AVERAGE DAILY UNIT POWER LEVEL l

DOCKET NO. 50-271 i

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UNIT Vermont Yankee DATE ,950110 COMPLETED BY G.A. WALLIN -

TELEPHONE (802)257-7711 MONTH December  !

l DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL 1 (MWe-Net) (MWe-Net) l l

1. 518 17. 519 , !
2. 486 18, 516
3. 519 19. 519
4. 535 20. 521
5. 519 21. 519
6. 517 22. 519
7. 518 23. 519
8. 518 24. 519
9. 518 25. 517
10. 518 26. 519
11. 517 27. 519
12. 518 28. 519 13, 518 29. 519
14. 518 30. 515
15. 518 31. 519 _
16. 519 1

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 i megawatt. l

, i VYDPF 0411.02 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.18V l l

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UNIT SHUTDGWNS AND POWER REDUCTIONS

  • j REPORT MONTH DECEMBER DOCKET NO 50-271 UNIT NAME Vermont Yankee- '

DATE 950110 ,

COMPLETED BY G.A. Wallin '

TELEPHONE _(3021257-7711 1 2 3 4 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 94-14 941202 S 0.00 .B,H* 4 N/A RB CONROD MSIV closure and Power Bypass valve tests; Reduction and a rod pattern jexchange

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1 1 F: Forced 2 Reason: 3 Method: 4 Exhibit G- Instructions i

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. 5 G-Operational Error (Explain)

Page 1 of 1 H-(Explain) - Rod Pattern Exchange

.. .. ._ . . . , - - . .,. . . . . . - - - - , . ~ . . , . - - . , , , - - . . . . . . . , . . . , , . . - . , - - - - - - . . ,--. . . , . . - , . . -. - -- . .. . . - . _ . - - .

DOCKET NO. 50-271 DATE 950110 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711

  • REPORT MONTH December

SUMMARY

OF OPERATING EXPERIENCES Hichlights Vermont Yankee operated at 99.7% of rated thermal power for the month.  !

Gross electrical generation was 400.509 MWHe or 99.7% design electrical capacity.

Operatino 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% l of rated thermal power.

941202 At 0227 hours0.00263 days <br />0.0631 hours <br />3.753307e-4 weeks <br />8.63735e-5 months <br />, initiated a power reduction to minimum recirculation  ;

flow to perform, MSIV closure and Bypass valve tests, and a rod pattern exchange. (See Unit Shutdowns and Power Reductions) 941202 At 0312 hours0.00361 days <br />0.0867 hours <br />5.15873e-4 weeks <br />1.18716e-4 months <br />, commenced MSIV closure test.

941207. At 0318 hours0.00368 days <br />0.0883 hours <br />5.257936e-4 weeks <br />1.20999e-4 months <br />, initiated a rod pattern exchange.

941202 At 0342 hours0.00396 days <br />0.095 hours <br />5.654762e-4 weeks <br />1.30131e-4 months <br />, completed MSIV closure test. ,

941202 At 0412 hours0.00477 days <br />0.114 hours <br />6.812169e-4 weeks <br />1.56766e-4 months <br />, completed the rod pattern exchange; initiated Bypass valve test.

941202 At 0435 hours0.00503 days <br />0.121 hours <br />7.19246e-4 weeks <br />1.655175e-4 months <br />, completed Bypass valve test.

941202 At 0505 hours0.00584 days <br />0.14 hours <br />8.349868e-4 weeks <br />1.921525e-4 months <br />, initiated a return to full power. .

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

VYDPF 0411.04 DP 0411 Rev. 5 Page 1 of 1 RT No. 13.F01.18X r y e: - .

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