BVY-97-126, Monthly Operating Rept for Sept 1997 for Vermont Yankee Nuclear Power Station

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Monthly Operating Rept for Sept 1997 for Vermont Yankee Nuclear Power Station
ML20211N683
Person / Time
Site: Vermont Yankee Entergy icon.png
Issue date: 09/30/1997
From: Maret G, Wallin G
VERMONT YANKEE NUCLEAR POWER CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
BVY-97-126, NUDOCS 9710170071
Download: ML20211N683 (6)
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EllMONT YANKEE NUCLEAR POWER CORPORATION

?'A P.O. L ox 157. Governor Hunt Road

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Verno.i, Vermont 05354-0157 q

j (802) 257 7711 October 10,1997 BVY-97-126 United States Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D.C. 20555 Refaence: (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 Esptember.1997.

Sincerely, VERM EN CLEARPOWERCORPORATION Grego Plant Ma er i

cc: USNRC Region I Administrator USNRC Resident Inspector - VYNPS USNRC Project Manager - VYNPS y

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9710170071 970930 PDR ADOCK 05000271 R PDR lllllllllII!!!b!!

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l l VERMONT YANKEE NUCLEAR POWER STATION MONTIILY STATISTICAL REPORT 97 09 FOR Tile MONTil OF SEPTEMBER 1997 Figure 11 DP 0411 Rev. 7 Page1 of1

l OPERATING DATA REPORT l

DOCKET NO.30-271 DATE 971010 COMPLETED BY G.A. WALLIR__

TELEPHONE (802)258-5414 OPERATING STATUS

1. Unit Names Vermont Yankee
2. Reporting Period: Seotembat
3. Licensed Thermal Power (MWt) :1593
4. Nameplate Rating (Gross MWe) : 112
5. Design Electrical Rating (Net MWe): 522 l
6. Maximum Dependable Capacity (Gross MWe) : Ell
7. Maximum Dependable Capacity (Net MWe): 112
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 216935.00
12. Number Of Hours Reactor was Critical 720.00 6245.39 181212.05

-13.-Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 720.00- 6214.00 177887.00
15. Unit Reserve Shutdown Hours 0.00 0.00 0.00
16. Gross Thermal Energy Generated (MWH) 1143428.85_ 9858315.60 267505448.90
17. Gross-Electrical Energy Generated 385825.00 _3351146.00 89402568.00 18._ Net Electrical _ Energy Generated (MWH) 363908.00 3194052.00 85009941.00
19. Unit Service Factor 100.00 94.90 81.10
20. Unit Availability Factor 100.RQ_ 94.90 81.10
21. Unit Capacity Factor (Using MDC Net) 99.10 95.60 76.80
22. Unit Capacity Factor (Using DER Net) 96.80, 93.40 75.30
23. Unit Forced Outage Rate 0.00 3.89 4.58
24. Shutdowns scheduled over next 6 months (Type, Date, and Duration of Esch: 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 opera *. ion): N/A Forecasc Achieved INITIAL CRITICALITY INITIAL ELECTRICITY _

COMMERCIAL OPERATION VYDPF 0411.C1 (Sample)

DP 0411 Rev. 7 Page 1 of 1 RT No. 13.F01.19F

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 971010 COMPLETED BY G.A. WALLIN TELEPHONE (802)258-5414 MONTH Sootember DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 506 17, 507
2. 498 18. 500
3. 499 19. 500 -
4. 505 20, 502
5. 504 21. 510
6. 508 22. 513
7. 506 23. 508
8. 500 24. 510
9. 50L J 25. 511
10. 503 26. 510
11. 506 27. 509
12. 480 28. 513
13. 503 29, 512
14. 509 30, 506
15. 508 31. ---
16. 505 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 magawatt.

VYDPF 0411.02 ' (Sample)

DP 0411 Rev. 7 Page 1 of 1 RT No. 13.F01.18V

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UNIT SHUTDOWNS AND POWER REDUCTIONS ,

REPORT MONTH SEPTEMBE DOCKET NO 50-271 -

l UNIT NAME Vermont Yankee DATE 971010 COMPLn cu BY G.A. Wallin  !

TELEPHONE (802)258-5414 l 1 2 3 4 S 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 97-11 970912 S 0.00 B 4 N/A RB CONROD Scram Solenoid Pilot Power Valve replacements and Reduction Single Rod Scram testing.

g 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 (Erpl. min) (NUREG 0161)

E-Operator Training and License Examination 5 Exhibit I - Same Source F-Administrative G-Operational Error (Explain)

H-Explain -

VYDPF 0411.03 (Sample)

DP 0411 Rev. 7 Page 1 of 1

.* DOCKET NO. 50-271 DATE 971010 COMPLETED'BY Q A. WALLIN l_

I TELEPHONE (802)258-5414 REPORT MONTH Sectember

SUMMARY

OF OPERATING EXPERIENCES

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

Gross electrical generation was 385,825 MNHe or 98.1% deLign electrical cepacity.

Ooeratina-Summary The following is-a chronological description of plant operations including other-pertinent items of interest for the-monthr At the beginning-of the reporting period-the-plant was operating at 99.9%

of rated thermal power. I 970912 At 1901-hours,-initiated a power reduction to less than 80% to perform three Scram Solenoid Pilot Valve repplacements and Single Rod Scram-testing. (See Unit Shutdowns and Power Reductions) 970912 At 1952 hours0.0226 days <br />0.542 hours <br />0.00323 weeks <br />7.42736e-4 months <br />, at 71% power began first SSPV replacement.

970912 At 2022 hours0.0234 days <br />0.562 hours <br />0.00334 weeks <br />7.69371e-4 months <br />, performed single rod scram following first SSPV replacement.

970912 At 2041 hours0.0236 days <br />0.567 hours <br />0.00337 weeks <br />7.766005e-4 months <br />, began second SSPV replacement.

970912 At 2115-hours, performed single rod scram following second SSPV replacement.

970912 At 2136 hours0.0247 days <br />0.593 hours <br />0.00353 weeks <br />8.12748e-4 months <br />, began third SSPV replacement.

970912 At 2204 hours0.0255 days <br />0.612 hours <br />0.00364 weeks <br />8.38622e-4 months <br />, performed single rod scram following third SSPV replacement.

970912 At 2229 hours0.0258 days <br />0.619 hours <br />0.00369 weeks <br />8.481345e-4 months <br />, began a return to full power.

At the end of the reporting period-the plant was operating at 99.9% of-rated thermal power.

VYDPP 0411.04 (Sample)

DP 0411 Rav. 7 Page 1 of-1 RT No. 13.F01.18X

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