BVY-96-087, Monthly Operating Rept for June 1996 for Vermont Yankee Nuclear Power Station

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Monthly Operating Rept for June 1996 for Vermont Yankee Nuclear Power Station
ML20115E002
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 06/30/1996
From: Wallin G, Wanczyk R
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-96-087, BVY-96-87, NUDOCS 9607160052
Download: ML20115E002 (6)
v • d • e


Text

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VERMONT YANKEE j

NUCLEAR POWER CORPORATION

<- P.O. Box 157, Governor Hunt Road

/ '

Vernon, Vermont 05354-0157 h (802) 257-7711 July 10,1996 BVY-96-087 United States Nuclear Regulatory Commission ATIN: 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 June.1996.

Sincerely, VERM ONT YANKEE NUCLEAR POWER CORPORATION Robert anczyk Plant Manager cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Manager - VYNPS 9607160052 DR 960630 ADOCK 05000271 PDR 100016 i v

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l VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 96-06 FOR THE MONTH OF JUNE 1996 l

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DP 0411 Rev. 6 Page 1 of 1

OPERATING DATA REPORT DOCKET NO.50-271 DATE 960710 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS .

1. Unit Name: Vermont Yankee
2. Reporting Period: June
3. Licensed Thermal Power (MWt):1593
4. Nameplate Rating (Gross MWe): 540
5. Design Electrical Rating (Net MWe): 522
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. Reasons for restrictions, if any: . N/A This Month Yr-to-Date Cumulative
11. Hours in Reporting Period 720.00 4367.00 206711.00
12. Number Of Hours Reactor was Critical 720.00 4367.00 171848.03
13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00
14. Hours Generator On-Line 720.00 4367.00 168618.63
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1128181.65 6900624.10 252983383.00
17. Gross Electrical Energy Generated 383765.00 2381052.00 84466559.00
18. Net Electrical Energy Generated (MWH) 365241.00 2285411.00 80302510.00
19. Unit Service Factor 100.00 100.00 81.57
20. Unit Availability Factor 100.00 100.00 81.57
21. Unit Capacity Factor (Using MDC Net) 99.50 102.60 76.40
22. Unit Capacity Factor (Using DER Net) 97.20 100.30 74.90
23. Unit Forced Outage Rate 0.00 0.00 4.67
24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Each: 1996 Refuelino Outaae scheduled to begin 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 oper'ation): N/A Forecast Achieved INITIAL CRITICALITY -

INITIAL ELECTRICITY COMMERCIAL OPERATION VYDPF 0411.01 DP 0411 Rev. 6 Paga 1 of 1 RT No. 13.F01.19F

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l RVERAGE DAILY UNIT POWER LEVEL l l

DOCKET NO. 50-271 UNIT Vermont Yankee DATE 960710 COMPLETED BY G.A. WALLIN j TELEPHONE (802)258-5414 MONTH June I

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

1. 525 1.7 . 522  ;
2. 620 18. 513 i

l 3. 518 19, 516

4. 522 20. 516 l S. 519 21. 510 l
6. _

521 22. SQ3 i

7. 515 23. 51a _
8. 515 24. 510 l l I
9. 521 25. 520 l 10. 524 26. 518
11. 418 27. 522 j 12. 349 28. 518

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( 13. 488 29. 517

14. 500 30. 516 l

) 15. 523 31. ---

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16. 522 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.

VYDPF 0411.02 i DP 0411 Rev. 6 Page 1 of 1 RT No. 13.F01.1BV

UNIT SHUTDOWNS AND POWER REDUCTIONS ,

REPORT MONTH JUNE DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 960710 COMPLETED BY G.A. Wallin TELEPHONS (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 96-06 960611 S 0.00 B,H* 4 N/A RB CONROD MSIV and turbine Power bypass valve testing, Reduction scram solenoid pilot valve diaphragm changeouts, single rod scram testing, and a rod pattern exchange 1 F: Forced 2 Reason: 3 Method: 4 Exhibit G- Instructions S: Scheduled A-Eq"ipment 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 VYDPP 0411.03 F-Administrative DP 0411 Rev. 6 G-Operational Error (Explain)

Page 1 of 1

  • H-(Explain) - Rod Pattern Exchange

DOCKET NO. 50-271 DATE 960710 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH June

SUMMARY

OF OPERATING EXPERIENCES Hiahlichts V:rmont Yankee operated at 98.4% of rated thermal power for the month. l Gross electrical generation was 383,765 MWHe or 97.6% design electrical i capacity.

Operatina S""rary 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 99.8% l of rated thermal power. j

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i 960611 At 1600 hours0.0185 days <br />0.444 hours <br />0.00265 weeks <br />6.088e-4 months <br />, decreasing power with recirculation flow to l l perform Main Steam Isolation valve, turbine bypass valve, and l l single rod scram testing. Also, to perform a rod pattern exchange and Scram Solenoid Pilot Valve (SSPV) diaphragm changeouts. (See Unit Shutdowns and Power Reductions) 960611 At 1645 hours0.019 days <br />0.457 hours <br />0.00272 weeks <br />6.259225e-4 months <br />, with power at 70%, initiated MSIV and turbine

, bypass valve testing.

l 960611 At 1710 hours0.0198 days <br />0.475 hours <br />0.00283 weeks <br />6.50655e-4 months <br />, completed MSIV testing.

960611 At 1721 hours0.0199 days <br />0.478 hours <br />0.00285 weeks <br />6.548405e-4 months <br />, completed turbine bypass valve testing.

960611 At 1724 hours0.02 days <br />0.479 hours <br />0.00285 weeks <br />6.55982e-4 months <br />, decreasing power to 50% for SSPV maintenance, single rod scram testing, and a rod pattern exchange.

960611 At 1859 hours0.0215 days <br />0.516 hours <br />0.00307 weeks <br />7.073495e-4 months <br />, with power at 50%, initiated SSPV maintenance, and single rod scram testing.

960612 At 0502 hours0.00581 days <br />0.139 hours <br />8.300265e-4 weeks <br />1.91011e-4 months <br />, initiated a rod pattern exchange.

i 960612 At 0553 hours0.0064 days <br />0.154 hours <br />9.143518e-4 weeks <br />2.104165e-4 months <br />, completed SSPV maintenance and single rod scram j testing.

960612 At 0600 hours0.00694 days <br />0.167 hours <br />9.920635e-4 weeks <br />2.283e-4 months <br />, completed the rod pattern exchange.

960612 At 0615 hours0.00712 days <br />0.171 hours <br />0.00102 weeks <br />2.340075e-4 months <br />, began a return to full power.

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

VYDPF 0411.04 DP 0411 Rev. 6 Pcge 1 of 1 RT No. 13.F01.18X

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