ML032940501

September 2003 Monthly Operating Report for Vermont Yankee

ML032940501
Person / Time
Site:	Vermont Yankee
Issue date:	10/10/2003
From:	Bronson K Entergy Nuclear Northeast, Entergy Nuclear Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
BVY-03-91
Download: ML032940501 (7)

Text

Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.

Vermont Yankee

-- Entergy 322 Governor Hunt Rd.

RO. Box 157 Vernon, VT 05354 Tel 802-257-7711 October 10, 2003 BVY-03-91 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555

Reference:

(a) License No. DPR-28 (Docket No. 50-27 1)

In accordance with section 6.6.B of the Vermont Yankee Technical Specifications, submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of September, 2003.

Sincerey Kevin H. Bronson General Manager, Plant Operations cc: USNRC Region I Administrator USNRC Resident Inspector USNRC Project Manager aLf I

VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 03-09 FOR THE MONTH OF SEPTEMBER 2003

OPERATING DATA REPORT DOCKETNO.50-271 DATE 031010 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Name: Vermont Yankee

2. Reporting Period: September

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 6551.00 272712.80

12. Number Of Hours Reactor was Critical 658.17 6489.17 229638.00

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 634.83 6465.83 225979.10

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated(MWH) 970884.10 10200349.73 342580766.54

17. Gross Electrical Energy Generated(MWH) 326840.00 3483325.00 115064255.00

18. Net Electrical Energy Generated(MWH) 308413.00 3323280.00 109505639.00

19. Unit Service Factor 88.17 98.70 82.86

20. Unit Availability Factor 88.17 98.70 82.86

21. Unit Capacity Factor(Using MDC Net) 83.99 99.47 79.41

22. Unit Capacity Factor(Using DER Net) 82.06 97.18 77.79

23. Unit Forced Outage Rate 8.88 0.95 3.86

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 (Sample)

DP 0411 Rev. 8 Page 1 of 1 RT No. 13.FO1.19F

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 031010 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. 506 17. 221

2. 502 18. 277

3. 502 19. 474

4. 514 20. 500

5. 516 21. 504

6. 513 22. 504

7. 509 23. 512

8. 507 24. 525

9. 508 25. 525

10. 507 26. 515

11. 507 27. 179

12. 506 28. 0

13. 502 29. 0

14. 500 30. 0

15. 502 31. ---

16. 508 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 megawatt.

VYDPF 0411.02 (Sample)

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UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH SEPTEMBER DOCKET NO 50-271 UNIT NAME Vermont Yanket DATE 031010 COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 1 2 3 4 5 Cause and Corrective Action to Prevent No. Date Type Duration Reason Method of License System Component Recurrence.

Shutting Event Code Code (hours) Down Report #

Reactor 03-08 030917 S 0.00 B,H* 4 N/A RB CONROD Turbine and MSIV valve Power testing, "A" recirculation Reduction MG set maintenance, and a rod pattern exchange.

03-09 030917 F 17.90 A 4 N/A CB RELAYX "A" recirculation MG set Power field breaker did not Reduction close upon restart due to time delay relay failure.

Replaced failed component.

03-10 030927 F 30.20 A 1 N/A CA VALVEX Manual shutdown due to Manual drywell leakage caused by the RV-19 valve. Valve repaired.

03-11 030929 F 31.63 A 1 N/A CB VALVEX Manual shutdown for "B" Manual recirculation pump seal replacement.

UNIT SHUTDOWNS AND POWER REDUCTIONS REPORT MONTH SEPTEMBER DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 031010 -

COMPLETED BY G.A. Wallin TELEPHONE (802)258-5414 (Continued) 1 F: Forced 2 Reason: 3 Met]hod: 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 F-Administrative G-Operational Error (Explain)

• H-(Explain) - rod pattern exchange VYDPF 0411.03 DP 0411 Rev. 8 Page 1 of 1

DOCKET NO. 50-271 DATE 031010 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 REPORT MONTH September

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 84.6% of rated thermal power for the month.

Gross electrical generation was 326,840 MWHe or 83.1% design electrical capacity.

Operating 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.

030917 At 0241 hours0.00279 days <br />0.0669 hours <br />3.984788e-4 weeks <br />9.17005e-5 months <br />, commenced a power reduction to 26% to perform turbine valve testing, MSIV full closure testing, "A" recirculation MG set maintenance, and a rod pattern exchange. (See Unit Shutdowns and Power Reductions) 030917 At 0328 hours0.0038 days <br />0.0911 hours <br />5.42328e-4 weeks <br />1.24804e-4 months <br />, commenced MSIV full closure testing.

030917 At 0414 hours0.00479 days <br />0.115 hours <br />6.845238e-4 weeks <br />1.57527e-4 months <br />, completed MSIV full closure testing.

030917 At 0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br />, commenced turbine valve testing.

030917 At 0520 hours0.00602 days <br />0.144 hours <br />8.597884e-4 weeks <br />1.9786e-4 months <br />, completed turbine valve testing.

030917 At 0655 hours0.00758 days <br />0.182 hours <br />0.00108 weeks <br />2.492275e-4 months <br />, commenced a rod pattern exchange.

030917 At 0824 hours0.00954 days <br />0.229 hours <br />0.00136 weeks <br />3.13532e-4 months <br />, completed the rod pattern exchange.

030917 At 1030 hours0.0119 days <br />0.286 hours <br />0.0017 weeks <br />3.91915e-4 months <br />, secured the "A" recirculation MG set for maintenance.

030917 At 1556 hours0.018 days <br />0.432 hours <br />0.00257 weeks <br />5.92058e-4 months <br />, attempted restart of the "A" recirculation MG set following maintenance. Field breaker did not close due to time delay relay failure. Repair work ongoing. (See Unit Shutdowns and Power Reductions) 030918 At 0950 hours0.011 days <br />0.264 hours <br />0.00157 weeks <br />3.61475e-4 months <br />, restarted the "A" recirculation MG following time delay relay repair.

030918 At 0955 hours0.0111 days <br />0.265 hours <br />0.00158 weeks <br />3.633775e-4 months <br />, began a return to full power.

030927 At 0715 hours0.00828 days <br />0.199 hours <br />0.00118 weeks <br />2.720575e-4 months <br />, began a manual plant shutdown due to drywell leakage caused by the RV-19 valve. (See Unit Shutdowns and Power Reductions) 030927 At 1050 hours0.0122 days <br />0.292 hours <br />0.00174 weeks <br />3.99525e-4 months <br />, removed the turbine-generator from the grid.

030927 At 1659 hours0.0192 days <br />0.461 hours <br />0.00274 weeks <br />6.312495e-4 months <br />, the reactor was sub-critical.

030928 At 2311 hours0.0267 days <br />0.642 hours <br />0.00382 weeks <br />8.793355e-4 months <br />, the reactor was critical.

030929 At 1622 hours0.0188 days <br />0.451 hours <br />0.00268 weeks <br />6.17171e-4 months <br />, the reactor was sub-critical for "B" recirculation pump seal replacement. (See Unit Shutdowns and Power Reductions)

At the end of the reporting period the plant was operating at 00.0% of rated thermal power.

VYDPF 0411.04 (Sample)

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