ML20065J008

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Monthly Operating Rept for Mar 1994 for Vermont Yankee Nuclear Power Station.W/940410 Ltr
ML20065J008
Person / Time
Site: Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date: 03/31/1994
From: Reid D, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-94-39, VY-RCE-94-009, VY-RCE-94-9, NUDOCS 9404150252
Download: ML20065J008 (6)
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VERMONT.. YANKEE MCCLEAR POWER' CORPORATION.-

t P.O. Box 157. Governor Hunt Road

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j Vernon, Vermont 05354-0157-  !

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j ,. (802) 257-7711 i --

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April 10,1994 VY-RCE-94-009 i BVY 94-39  ;

U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attn: Document Control Desk -

Reference:

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

Dear Sir:

Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of March.1994.

Very tally yours, Vermont Yankee Nuclear Power Corp.

Al' Donald A. Reid Vice President, Operations >

cc: USNRC, Region I USNRC Resident Inspector, VYNPS P

f 180006 9404150252 940331 PDR ADOCK 05000271

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R. PDR

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l l VERMONT YANKEE NUCLEAR POWER STATION -

l MONTIILY STATISTICAL REPORT 94-03

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FOR TIIE MONTII OF MARCII 1994 t

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i DP 0411 Rev. 5 Page 1 of 1

. OPERATING DATA REPORT

. DOCKET NO.50-271 DATE 940410 COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 OPERATING STATUS

1. Unit Name: Vermont Yankee
2. Reporting Period: March NOTES:
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rating (Gross MWe) : 14Q ,
5. Design Electrical Rating (Net MWe): 514(oc) 504 (cc)
6. Maximum Dependable Capacity (Gross MWe) : 11E
7. Maximum Dependable Capacity (Net MWe): 50A
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 2160.00 186984.00
12. Number Of Hours Reactor was Critical 744.00 2160.00 153377.41
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line
  • 744.00 2154.35 150269.97
15. Unit Reserve Shutdown Hours 0.0Q_ 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1_167695.00 3399641.00 224105312.50
17. Gross Electrical Energy Generated 395437.00 1151755.00 74671137.00
18. Net Electrical Energy Generated (MWH) 380313.00 1107360.00 70954384.00
19. Unit Service Factor 100.00 99.74 79.64
20. Unit Availability Factor 100.00 99.74 79.64 ,
21. Unit Capacity Factor (Using MDC Net) 101.42 101.72 74.61
22. Unit Capacity Factor (Using DER Net) 99.45 99.74 73.16
23. Unit Forced Outage Rate 1.51 0.79 5.12
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. 5 Page 1 of 1 RT No. 13.F01.19F

l AVERAGE DAILY UNIT POWER LEVEL l

DOCKET NO. 50-271 UNIT Vermont Yankee DATE 940410 l COMPLETED BY G.A. WALLIN TELEPHONE (802)257-7711 :

MONTH March DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 519 17. 494
2. 519 18. 490
3. 519 19. 519
4. 520 20. 520 ,
5. 519 21. 529
6. 519 22. 519
7. 519 23. 519
8. 519 24. 519
9. 519 25. 520
10. 519 26. 520
11. 519 27. 519
12. 519 28. 519 13, 519 29. 519 i l
14. 519 30. 519
15. 333 31. 519
16. 514 l INSTRUCTIONS: l l

On this format, list the average daily unit power level in MWE-Net j for each day in the reporting month. Compute to the nearest whole  !

megawatt.

VYDPF 0411.02 DP 0411 Rev. 5 Page 1 of 1  !

RT No. 13,F01.18V I i

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UNIT SHUTDOWNS AND POWER REDUCTIONS -

REPORT MONTH MARCH DOCKET NO 50-271 UNIT NAME Vermont' Yankee DATE 940410 COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 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 94-03 940315 S 0.00 B,H* 4 N/A RB CONROD Surveillance testing Power and a Rod Pattern Reduction Exchange 94-03 940315 F 11.42 A 4 N/A CD VALVOP MSIV-80B closure Power timing out of Reduction specification. Speed adjustment made to correct deficient time 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. 5 G-Operational Error (Explain)

Page 1 of 1 *H-(Explain) - Control Rod Pattern Exchange u_______._______ _. _ _ _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _

DOCKET NO. 50-271 I DATE 940410 i l ., COMPLETED BY G.A. WALLIN l TELEPHONE (802)257-7711 !

REPORT MONTH March

SUMMARY

OF OPERATING EXPERIENCES Highlichts Vermont Yankee operated at 99.5% of rated thermal power for the month.

Gross electrical generation was 395.437 MWHe or 98.4% design electrical i 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%

of rated thermal power. ,

940315 At 0405 hours0.00469 days <br />0.113 hours <br />6.696429e-4 weeks <br />1.541025e-4 months <br />, initiated a power reduction to minimum recirculation flow to perform surveillance testing, and a rod pattern exchange.

! 940315 At 0430 hours0.00498 days <br />0.119 hours <br />7.109788e-4 weeks <br />1.63615e-4 months <br />, initiated turbine bypass valve testing. (See Unit Shutdowns and Power Reductions) 940315 At 0533 hours0.00617 days <br />0.148 hours <br />8.812831e-4 weeks <br />2.028065e-4 months <br />, completed turbine bypass valve testing.

i 940315 At 0601 hours0.00696 days <br />0.167 hours <br />9.937169e-4 weeks <br />2.286805e-4 months <br />, at minimum recirculation flow, initiated MSIV testing.

MSIV-80B closure time was not within specification. (See Unit Shutdowns and Power Reductions) 940315 At 0620 hours0.00718 days <br />0.172 hours <br />0.00103 weeks <br />2.3591e-4 months <br />, initiated a rod pattern exchange. (See Unit Shutdowns l and Power Reductions) 1 940315 At 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br />, completed the rod pattern exchange.

940315 At 1448 hours0.0168 days <br />0.402 hours <br />0.00239 weeks <br />5.50964e-4 months <br />, and 40% power, initiated a drywell entry to perform a speed adjustment on MSIV-80B.

l l 940315 At 1840 hours0.0213 days <br />0.511 hours <br />0.00304 weeks <br />7.0012e-4 months <br />, completed speed adjustment to MSIV-80B.

, f 940315 At 1858 hours0.0215 days <br />0.516 hours <br />0.00307 weeks <br />7.06969e-4 months <br />, completed MSIV testing and began a return to full power.

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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. 5  !

Page 1 of 1 RT No. 13.F01.18X j i

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