ML19269C901

Monthly Operating Rept for Jan 1979

ML19269C901
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	02/12/1979
From:	Sjogren R VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML19269C900	List: ML19269C899 ML19269C901
References
NUDOCS 7902200051
Download: ML19269C901 (6)

Text

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VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 79-01 FOR THE MONTH OF JANUARY, 1979 79022000 5/

OPERATING DATA REPORT DOCKET NO. 50-271 DATE 790212 CO31PLETED BY F.M. Sincren TELEPilONEAZZ61 A17 'AA 00ll OPERATING STATUS Ve mont Y,"koo N *"

1. Unit Name:

2. Reporting Period: Januarv. 1979

3. Licensed Thermal Power (SIWt): 1 Sol

4. Nameplate Rating (Gross .\lWe): 540

5. Design Electrical Rating (Net MWe): 514(open cycle)S04(clo ;ed cycle)

6. 31aximum Dependable Capacity (Gross SIWE): 535

7. Maximum Dependable Capacity (Net MWe): 504 S. If Changes Occur in Capacity Ratings (Items Number 3 Through 7) Since Last Report. Gise Reasons:

9. Power Lesel To Which Restricted.If Any (Net MWe):

10. Reasons For Restrictions. If Any:

k This Month Yr..to.Date Cumulative

11. Ilours in Reporting Period 74! 744 --

12. Number Of flours Reactor Was Critical 7d 744 44,633.83

13. Reactor Reserve Shutdown Ifours 0 0 0

14. Ilours Generator On.Line 744 744 . 42.477

15. Unit Reserve Shutdown flours 0 0 0

16. Gross Thermal Energy Generated (MWH) 1.177.232.5 1.177.232.5 59.564.050.5 -

17. Gross Electrical Energy Generated (MWil) 403.150 403.150 19.742.618 IS. Net Electrical Energy Generated (MWil) 387.213 _. 387,213 18,706,736

19. Unit Service Factor 100 100 76.8

20. Unit Availability Factor 100 100 76.8 o.6 96.o 66.a

21. Unit Capacity Factor (Using MDC Net)

22. Unit Capacity Factor (Using DER Net) 98.7 98.7 65.2

23. Unit Forced Outage Rate 0 0 7.2

24. Shutdowns Scheduled Oser Next 6 Months (Type. Date,and Duration of Each):

25. If Shut Down At End Of Report Period. Estimated Date of Startup:

26. Units in Te ' Status (Prior to Commercial Operation): Forecast Achiesed INITIA L CRITICA LITY INITIA L ELECTRICITY

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CO\lMERCI AL OPERATION (9/77)

AVERAGE DAILY UNIT POWER LEVEL DOCKET NO.

50-271 L' NIT Vermont DATE 790212 _

COslPLETED BY T' " W aron TELEPHONE 617-366-9011 X2281 January 1979 DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (SlWe Net) (Slwe-Net) 520 523 1 1.,

2 521 18 523 3 5'? 19 521 4

523 522 20 5

523 yj 506 6 5'l 22 523 7 511 23 523 8 5" 24 sol 9 523 25 521 10 523 26 523 11 524 27 523 12 522 28 400 13 522 29 522 14 510 30 522 15 522 523 31 16 523 INSTRUCTIONS On this format. list the average daily unit power leselin N1We-Net for each day in the reportmg month. Compute to the nearest whole megawatt.

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DOCKET NO. 50-271 UNIT Vermont DATE 7o0712 C0!!PLETED LY q m qjonre, Report Month January, 1979 TELEP110NE 617-366-9011 SAFETY RELATliD fl\INTENANCli NATURE OF LER OR OUTAGE MALI;UNCTIUN EQUIP: TENT MAINTENANCE NU!!!1ER CAUSL 1:LS U L'l CORRECTIVli ACTION Electro-Chemical Potentia Corrective (ECP) Testing System IIR 7 3-1300 NA Failed Gasket Steam Leak Replaceu (asket RCIC Valve V-8000 Corrective NA Loose Packing Leakage Adjusted Packing MR 79-5 ECP Testing System Corrective NA Failed Packing Leakage Repacked Valves Isolation Valves V103 & MR 79-34 V104 RWCU Piping Corrective LER 79-1/3L See LER 79-1/3L Leakage Replaced Flange MR 79-36 ECP Test Vessel Corrective LER 79-1/3L See LER 79-1/3L Leakage Repaired by Welding MR 79-39 4

DOCKET NO. 50-271 UNIT Ve rmont DATE 790212 COMPLETED BY R.M. Sjogren TELEPliONE 617-366-9011 X2281 REPORT MONTH January, 1979 SU5 MARY OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 99.3% of rated thermal power for the month of January, 1979. Cross electrical generation for the month was 403,150 MWHe, or 100.3% of design electrical capacity.

Operations Summary The fal) ring is a chronological description of plant operations including other pertinent items of interest for the month:

1-1 At the beginning of this report period, the plant was operating at 99% of rated thermal power.

1-21 At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br /> power was reduced to 78% for turbine surveillance. A return to full power was initiated at 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />.

1-28 At 0700 nours power was reduced to 77% for turbine surveillance. A return to full power :as initiated at 0800 hours0.00926 days <br />0.222 hours <br />0.00132 weeks <br />3.044e-4 months <br />.

1-31 At the conclusion of this report period, the plant was operating at 99% of rated thermal power.