ML19323J021

Monthly Operating Rept for May 1980

ML19323J021
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	06/12/1980
From:	Beers F VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML19323J020	List: ML19323J019 ML19323J021
References
NUDOCS 8006170649
Download: ML19323J021 (6)

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4 VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 80-05 FOR THE MONTH OF MAY, 1980 l

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8 00617 0 hTT

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. OPERATNG DATA REPORT ,.

• DOCKET NO. 50-271 yA7g BUU 6U.

COh!PLETED BY F. C. Beers

.* TELEPHONE A17 '66 0011,X2215

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OPERATING STATUS - .

Notes -

1. Unit Name: Vermont Yankee .

2. Reporting Period: Mav. 1980 1593

3. Licensed Thennst Power (5 twt):

540 -

4. Nsmep!ste Rating (Gross 31We):

514 (open) 504 (closed )

S. Design E!:ctrical Ratinj (Net 5!We): ,'

6. 31sximum Dependsbie Capacity (Gross MWe):

535'

• 50 4

- 7. 51sximum Dependsble Capscity (Net SIWE):

8. If Changes Occur in Capseity Ratings (Items Number 3 Through 7) Since Last Report. Give Reasons:

9. Power LevelTo Which Restricted.lf Any(Net 31We): ,

10. Reasons For Restrictions.If Any:

This hionth .Yr to.Dste ' Cumulative

11. Hours in Reporting Period 744 3.647 ---

12. Number Of Hours Reactor Was Critical 744 3.501.43 54.659.82

~ 13. Reactor Reserve Shutdown Hours 00 0.0 0.0 744.00 3,458.60 52,786.38 -

14, Hours Gener: tor On.! 'ne

15. Unit Reserve Shutdown Hours nn nn nn

16. Gross Therms! Energy Genersted (MWH) 1 171 100 nn 9 119.447.nn 76.964 n60.00

17. Gross Electriesl Energy Cenerated stWH) tom An1 no. 1, nom 11A nn 9A 7o9 ana.nn 18.' Net Electrics! Energy Generated (31WH) '374.298.00 1.744.461.00 23.512.826.00 78.27

19. Unit Service Factor .

100.00 94.83 .

20. Unit _Avsilsbility Factor 100.00 94.83 78.27

21. Unit Capacity Factor (Using StDC Net) 99.82 94.01 69.17 67.83

22. Unit Capacity Factor (Using DER Net) 97.88 93.06 ,

23. Unit Forced Outage Rste 0.0 .77 6.16

24. Shutdowns Scheduled Over Next 6 51onths (Type. Date. sad Duration of Esch):

Refueling outage scheduled to begin on Sept. 26, 1980 and will last for approximately eight weeks. _ _ .

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

26. Units in Test Status (Prior to Commercial Opersti(nu. Forecss: Achieved INITIAL CRITICALITY INITIAL ELECTRICITY -

CO315tERCIAL OPERATION-

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 800612 COMPLETED BY F. c. Beers TELEPHONE 617-366-9011 X2215 MoyTH Mav. 1980 DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

524 37 478 2 523 18 495 3 523 19 492 .

4 519 20 493 523 21 497 6 523 494 24 7 .

521 23 492 l 8 524 - 24 482 9 . 524 25 496

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10 522 26 '498 .

33 511 27 498-12 518 28 499 13 517 29 497

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14 514 30 495 15 504 33 482 16 &9i INSTRUCTIONS -

On this formst. list the sverage dsily unit power level in MWe-Net for each day in the reporting month. Compute to the nearest whole megawstt.

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i DOCKET NO. 50-271 UNITSilU1 DOWNS AND POWER REDUCTIONS UNIT NAnlE Vermont Yankee DATE 800612 C0&frLETED IlY F_ C. Beers REPORT A10NTil May. 1980 TELEril0NE 617-366-9011 X2215 e , c. 's e. 5 E N.. Date E.

$ ,0

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.c a a:

Evens 4 n.4 Cause & corrective Act,onin i

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. [3 E 5' jdiy Report

• N0 Pacvent itecurrence c .*

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l 80-12 800511 S 0 11 4- N/A RA 00NROD Main Turbine and Control Rod (Power Surveillance.

Reduc-tion) 80-13 800516 S 0 H 4~ N/A MB XXXXX Power reduced to investigate A0G (Power processing. problem. -

Reduc-tion)

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3 4 F: Fint cd Iteason: Method: Exhibit G Insieuctions

, S: Sthednied A. Equipment Failure (Explain) 1. Manual for Picparailun of Data ll Maintenance or Test 2. Manual Serain. Ent y Slicens for I.icensee C-Itefueling J. Automatic Scrain. Evens IteporI (Llilt) File (NURf.G-D Itegulatoiy itestriction

. 4 Other(Explain) 0161) l E Opciator Tsaininga License Examinailon F. Aitminiss eative 5

, G 0 3.ciational I.isur (limplain) Exhibit I Same Sousee

(9/77) Il Olhca (Expl.iin) e

s DOCKET NO. 50-271 UNIT Vermont Yankee DATE 800612 C014PLETED BY F. C. Beers ,

- TELEPil0NE 617-366-9011 X2215 .

SAFETY RELATED MAI?(TENANCE MAY,1980 NATURE OF LER Olt Otfl' AGE HALFUNCTION HAINTENANCE HUfIBER CAUSli IlliSULT C0llRECTIVil ACT!ON EQUIPilENT "A" Service Water Pump Corrective N/A Loose Packing Cland Leakage Adjusted Packing P-71-A MR 80,-478 HPIC Condensate Corrective N/A Loose Packing Cland Leakage Adjusted Packing Pump P87-1-A MR 80-502 e

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e DOCKET NO. 50-271 UNIT Vermont Yankee

- DATE 800612 COMPLETED BY p. c. neers TELEPHONE 617-366-9011 X2215 REPORT MON May, 1980 StBBIARY OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 98.98% of rated thermal power for the month.

Gross electrical generation was 395,401 MWH -or 98.4% of design electrical capacity.

Operating Summary The following is a chronological description of plant operations including other pertinent items of interest for the month:

5/1/80 At the beginning of the reporting period the plant was at 99.8% of rated thermal power.

5/11/80 At 0100 hrs. power was reduced for surveillance testing. ,

1 5/15/80 At 1140 hrs. the plant changed to the closed cycle. mode of circulating water cooling.

5/16/80 At 1505 hrs. a power reduction was initiated to inves-tigate A0G processing problems.

5/31/80 At the end of the reporting period the plant was at 99.8% of rated thermal power.

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