BVY-95-106, Monthly Operating Rept for Sept 1995 for Vynp

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Monthly Operating Rept for Sept 1995 for Vynp
ML20093F510
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 09/30/1995
From: Wallin G, Wanczyk R
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-95-106, VY-RCE-95-024, VY-RCE-95-24, NUDOCS 9510180007
Download: ML20093F510 (7)
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9 VERMONTLYANKE'E1

' NUCLEAR POWERiCORPORATION

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P.O. Box 157, Governor Hunt Road

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Vernon, Vermont 05354-0157

__ ;, (802) 257-7711 October 10, 1995 VY-RCE-95-024 BVY-95-106

.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 Sectember, 1995. ,

Also, ' included with this report is a revised supplemental .

l

" Unit ' Shutdowns hnd Power Reductions" sheet for the June. 1995

- report. This sheet has been revised after further review of the 1 dated entry.

Sincerely, Vermont Yankee Nuclear Power Corp.

l

Robert . Wanczy Plant Manager

.cc: USNRC' Region _I Administrator

-USNRC' Resident Inspector.- VYNPS USNRC' Project Mananger - VYNPS L'?Old3 '

-9510190007 950930 [

PDR..ADOCK 05000271 /'

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_,PDR _ _ , -l l

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-i VERMONT YANKEE NUCLEAR POWER STATION-MONTHLY STATISTICAL REPORT 95-09 FOR THE MONTH OF SEPTEMBER 1995 a

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l l DP 0411 Rev. 6 Page 1 of 1 l

OPERATING DATA REPORT DOCKET NO.50-271

  • . DATE 951010 COMPLETED BY G A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS
1. Unit Name: Vermont Yankee
2. Reporting Period: Seotember
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rating (Gross MWe): EAR
5. Design Electrical Rating (Net MWe): 122
6. Maximum Dependable Capacity (Gross MWe): SlE
7. Maximum Dependable Capacity (Net MWe): 51H
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 6551.00 200135.00
12. Number Of Hours Reactor was Critical 720.0Q_ 5464.96 165327.63
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 720.00 5415.45 162111.56
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1143418.40 8519387.70 242688260.90
17. Gross Electrical Energy Generated 385287.00 2876936.00 80914288.00
18. Net Electrical Energy Generated (MWH) 363210.00 2735099.00 76893694.00
19. Unit Service Factor 100.00 82.67 81.00
20. Unit Availability Factor 100.00 82.67 81.00
21. Unit Capacity Factor (Using MDC Net) 98.91 82.29 75.57
22. Unit Capacity Factor (Using DER Net) 96.64 80.52 74.10
23. Unit Forced Outage Rate 0.00 0.00 4.81
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

,- DOCKET NO. 50-271

'- UNIT Vermont Yankee DATE 951010 i COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414

. MONTH September

DAY AVERAGE-DAILY POWER LEVEL- DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)
1. 498 17. 507
2. 504 18. 507

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3. 505 19. 508
4. 503 20, 508 3
5. 500 21. 505
6. 502 22. 501
7. 497 23. 510 i
8. 506 24. 510
9. 506 25. 505 10, 507 26. 506 11, 478 27. 505
12. 506 28. 509 13, 501 29. 512
14. 500 30. 512 15, 508 31. ---
16. 509 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 nu:3awatt .

VYDPF 0411.02 DP 0411 Rev. 6 Page 1 of 1

'RT No. 13.F01.18V

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH SEPTEMBER DOCKET NO 50-271 '

UNIT NAME Vermont Yankee DATE 951010 COMPLETED BY G.A. Wallin TELEPHONE f802)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 95-06 950911 S 0.00 B,H* 4 N/A RB CONROD Bypass valve tests; Power MSIV full closure test Reduction and a rod pattern exchange 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 0-411.03 F-Administrative DP 0411 Rev. 6 G-Operational Error (Explain)

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

. ~

DOCKET NO. 50-271 DATE 951010 COMPLETED BY G.A. WALLIN

    • TELEPHONE (802)258-5414
REPORT MONTH September i 4

SUMMARY

OF OPERATING EXPERIENCES Hichlights

' Vermont Yankee operated at 99.7% of rated thermal power for the month.

Gross electrical generation was 385.287 MWHe or 98.0% design electrical capacity.

J Ooeratina Summary j The following is a chronological description of plant operations including i other pertinent items of interest for the month: l

! At the beginning of the reporting period the plant was operating at 99.9%

of rated thermal power.

950911 At 0420 hours0.00486 days <br />0.117 hours <br />6.944444e-4 weeks <br />1.5981e-4 months <br />, initiated a power reduction to less than 80%, to ,

perform turbine bypass valve tests, MSIV full closure tests, and j a rod pattern exchange. (See Unit Shutdowns and Power Reductions)

-950911 At 0450 hours0.00521 days <br />0.125 hours <br />7.440476e-4 weeks <br />1.71225e-4 months <br />, initiated turbine bypass valve testing.

950911 At 0510 hours0.0059 days <br />0.142 hours <br />8.43254e-4 weeks <br />1.94055e-4 months <br />, completed curbine bypass valve testing. Reducing i power to less than 70%, to perform MSIV full closure tests, and )

l the rod pattern exchange.

l 950911 At 0525 hours0.00608 days <br />0.146 hours <br />8.680556e-4 weeks <br />1.997625e-4 months <br />, initiated MSIV full closure testing.  !

l 950911 At 0540 hours0.00625 days <br />0.15 hours <br />8.928571e-4 weeks <br />2.0547e-4 months <br />, completed MSIV full closure testing. Initiated the rod pattern exchange.

I 950911 At 0625 hours0.00723 days <br />0.174 hours <br />0.00103 weeks <br />2.378125e-4 months <br />, completed the rod pattern exchange.

950911 At 0655 hours0.00758 days <br />0.182 hours <br />0.00108 weeks <br />2.492275e-4 months <br />, initiated a return to full power. 1 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

. __. _. _. . . _. _.._.. ___ .- _ ~ . - . . _ _ - . _ _ < . _ ..m. . . _ . - . . . ,_ . .. .

. .t 1.--

o UNIT SHUTDOWNS AND POWER REDUCTIONS-REPORT MONTH JUNE ;Rev.1 DOCKET NO 50-271 #' f UNIT NAME Vermont Yankee

-DATE 950710 -

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 ,

(hours) Shutting Event- Code Code Action to Prevent  ;

Down Report # Recurrence .

Reactor t 95 950619 F 0.00 A 4 N/A RB 'CONROD Power reduction'due'to Power crid stability with Reduction loss of the 379 KV. .

line  :

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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) t Page 1 of 1 H-(Explain) -

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