BVY-96-154, Monthly Operating Rept for Nov 1996 for Vermont Yankee Nuclear Power Station

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Monthly Operating Rept for Nov 1996 for Vermont Yankee Nuclear Power Station
ML20132B117
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 11/30/1996
From: Wallin G, Wanczyk R
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-96-154, NUDOCS 9612170068
Download: ML20132B117 (6)
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VERM,0NT YANKEE NUCLEAR POWER CORPORATION e' -

P.O. Box 157, Governor Hunt Road Vernon, Vermont 05354-0157

( , , , (802) 257-7711 December 10, 1996 BVY-96-154 United States 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 November.1996.

Sincerely, VER KEENUCLEARPOWERCORPORATION

(

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forRobe anczyk Plant Manager cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Manager - VYNPS

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1 9612170068 961130 PDR ADOCK 05000271 l )

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l VERMONT YANKEE NUCLEAR POWER STATION MONTIILY STATISTICAL REPORT 96-11 FOR TIIE MONTII OF NOVEMBER 1996 i

l l

l DP 0411 Rev. 6 Page 1 of I

, OPERATING DATA REPORT DOCKET NO.50-271 DATE 961210 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Name: Vermont Yankee
2. Reporting Period: November
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rating (Gross MWe): HAQ
5. Design Electrical Rating (Net MWe): Saa
6. Maximum Dependable Capacity (Gross MWe): 521
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. Reasons for restrictions, if any: N/A This Month Yr-to-Date Cumulative
11. Hours in Reporting Period 720.00 8040.00 210'34.00
12. Number Of Hours Reactor was Critical 720.00 6741.63 174 am ' 6 Q
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 686.97 6678.27 170929.27
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1036174.95 10394467.75 256477227.00
17. Gross Electrical Energy Generated 353850.00 3561730.00 85647237.00
18. Net Electrical Energy Generated (MWH) 340210.00 3409957.00 81427056.00
19. Unit Service Factor 95.42 83.06 80.70
20. Unit Availability Factor 95.42 83.06 80.70
21. Unit Capacity Factor (Using MDC Net) 92.60 83.20 76.10
22. Unit Capacity Factor (Using DER Net) 90.50 81.20 74.60-
23. Unit Forced Outage Rate 3.94 0.42 4.63
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 Page 1 of 1 RT No. 13.F01.19F

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

i. . AVERAGE DAILY UNIT POWER LEVEL j

DOCKET NO. 50-271 UNIT Vermont Yankee j DATE 961210 t-COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 I i

MONTH November ,

l

DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL j (MWe-Net) (MWe-Net)

\

1- . 1. 2 17. 530 J

! 1 J

l i 2. 79 18. 530 I

3. 98 19. 530 i

e 4. 265 20. 529 3

5. 497 21. 529 I 6. 529 22. 529 )

j- '7. 527' 23. 530 l 2

'8. 529 24. 530 i  !

9. 530 25. 530 i 4

i 530 529

10. 26. j j

11, 529 27. 529

12. 529 28. 529 1

{ 13. 528 29. 529 i

14, 529 30. 530

15. 530 31. 0

.i

16. 530 4

INSTRUCTIONS:

On this format, list the average daily unit power level in MWE-Net i

for each day-in the reporting month. Compute to the nearest whole megawatt.

VYDPF 0411.02

, DP 0411 Rev. 6 l- Page 1 of 1 i

4 RT-No. 13.F01.18V i

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

l UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH NOVEMBER DOCKET NO 50-271 UNIT NAME Vermont Yankee ,

DATE 961210 COMPLETED BY G.A. Wa11in TELEPHONE (802)258-5414 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 96-07 961101 S 3.18 C 1 N/A N/A N/A Shutdown for 1996 (Cont) Refueling / Maintenance outage 96-08 961101 F 24.92 A N/A N/A N/A VALVEX Turbine trip due to "A" Moisture Separator high level signal 96-09 961102 S 1.65 B N/A N/A N/A N/A Turbine overspeed testing and balancing 96-10 961103 F 3.28 A N/A N/A IF INSTRU Turbine trip due to i loss of condenser vacuum; caused by atmospheric drain tank level control system problem t

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) l 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 961210 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH November

SUMMARY

OF OPERATING EXPERIENCES Hiahlichts Vermont Yankee operated at 90.3% of rated thermal power for the month.

Gross electrical generation was 353.850 MWHe or 90.0% 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 15.7%

of rated thermal power.

961101 At 0311 hours0.0036 days <br />0.0864 hours <br />5.142196e-4 weeks <br />1.183355e-4 months <br />, the turbine-generator was phased to the grid, and a return to full power was initiated.

961101 At 0405 hours0.00469 days <br />0.113 hours <br />6.696429e-4 weeks <br />1.541025e-4 months <br />, the turbine tripped due to "A" moisture separator high level signal. (See Unit Shutdowns and Power Reductions) 961102 At 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, the turbine-generator was phased to the grid.

961102 At 0856 hours0.00991 days <br />0.238 hours <br />0.00142 weeks <br />3.25708e-4 months <br />, the turbine-generator was removed from the grid for testing. (See Unit Shutdowns and Power Reductions) 961102 At 1035 hours0.012 days <br />0.288 hours <br />0.00171 weeks <br />3.938175e-4 months <br />, the turbine-generator was phased to the grid following testing.

961103 At 1711 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.510355e-4 months <br />, the turbine tripped due to loss of condenser vacuum, which was caused by atmospheric drain tank level control system problems. (See Unit shutdowns and Power Reductions) 961103 At 2028 hours0.0235 days <br />0.563 hours <br />0.00335 weeks <br />7.71654e-4 months <br />, the turbine-generator was phased to the grid, and a return to full power was initiated.

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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