ML19296B009

Monthly Operating Rept for Jan 1980

ML19296B009
Person / Time
Site:	Vermont Yankee
Issue date:	02/12/1980
From:	Sjogren R VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML19296B007	List: ML19296B006 ML19296B009
References
NUDOCS 8002190681
Download: ML19296B009 (8)

Text

1 V

VER10NT YANKEE NUCLEAR POWER STATION M0trnlLY STATISTICAL REPORT 80-01 FOR THE MONTH OF JANUARY, .1980 o

5 8 0 02 2 906S t

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OPERATING DATA REPORT DOCKET NO. 50-271 DATE 800212 CO31PLETED BY J. M. Sjogren TELEPHONE . /-300-9011 x2368 OPERATING STATUS Vermont Yankee Notes

1. Unit Name:

2. Reporting Period: Januarv, 1980 1593 S. Licensed Thennal Power (31Wt):

4. Nameplate Rating (Gross SIWE): 540

5. Design Electrical Rating (Net 31W 514[Open cvele) 504 (Closed cycle)

6. Sfaximum Dependable Capacity (Gross 5twe): 535

7. Staximum Dependable C2pacity (Net SIWE): 514

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

9. Power Level To Which Restricted.If Any (Net 31We):

10. Reasons For Festrictions.If Any:

This 3fonth Yr..to.Date Cumulative .

I1. Hours in Reporting Period 744' 744 '

12. Nun.ber Of Hours Reactor Was Critical 723.05 723.05 51,881.44 13.' Reactor Resene Sherdown Hours 0.0 0.0 0. 0.

14. Hours Generator On.Line 710.1 710.1 , 50,037.88

15. Unit Reserve Shutdown Hours 0.0 0.0 0.0

16. Gross T'termal Energy Generated (31WH) 1,031,396.5 1,031,396.5 70,256,009.5. .

17. Gross Electrical Energy Generated (31WH) 351.821 ,_,

351,821 2 M 21,491 -

18. Net E!cctric:1 Ener;y Generated (31WF.) 337,540 337.540 22,105,905

19. Unit Service Factor 95.4 95.4 77.5

20. Unit Availability Factor 95.4 95.4 - 77.5 *

21. Unit Capacity Factor (Using SIDC Net) _

90.0 90.0 68.0

22. Uni: Capacity Factoc (Using DER Net) 88.3 88.3 66.6

23. Unit Forced Outage Race 3.7 3.7 6.5

24. Shutdowns Scheduled Over Next 6 \1onths (Type. Date.and Duration of Each1:

25. If Shur Down A End Of Report Period. Estimated Date of Startup: Februarv 4e 1980 '

26. Units In Test Status (Prict to Commercin! Operation): Forecar Achieved

,- INIT!AL CRITICALITY -

N, INITIA L ELECTRIC! TY CostMERCIAL OPER ATION

'(4/77)

AVERACE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Verm nt Yankee DATE 800212 COMPLETED BY R. M. Sjogren TELEPHONE 617-366-9011 x2368 MONTH Januarv, 1980 DAY AVERAGE ILY VER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) 1 524 524-17 2 524 521 13 3 524 363 19 4 20 320 5 132 396 21 6

133 497

, 22 388 523 k 7 23 3 479 '523 24 9 499 523 25 10 388 355 26 II 477 437 27 12 524 515 23 g3 524 523 29 14 524 ,

5 520 314 33 524 16 INSTilUCTIONS On this format. list the average daily unit power levelin MWe Net for each day in the reportine month. Compute to the nearest whole meg 2 wart.

V (9/77)

C Page One of Two UNITSilUIDOWNS AND POWER REDUCTIONS DOCKET NO. 50-271 UNIT NAME Vermont Yankee DATE 800212 ITEPORT MONTig January, 1980 COMPLETED ItY R. M. Stonren TELEPil0NE 617 '466-9011 x2368 e,

e en 's ui 5 .

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~. .2 e g -, .s X Licensee c 't. c Cause & Corrective N" ' D' ' '

$ jj g jj$ Event p Acijnn in o- M Report # in O y Di j g Psevent Itecurrence 6

80-1 800105 F 27 A 1 N/A CF VALVEX Excessive drywell leakage rate caused by failure of RilR81B packing. Valve was repacked.

80-02 800110 S 0 11 4 N/A RA COUROD Control Rod Pattern adjustment.

(Power ReductI on) 80-03 800118 S 0 11 4 N/A RA CONROD Turbine Surveillance and Control Rod (Power pattern exchange.

Reducti on) 80-04 800120 F 0 11 4 N/A ZZ ZZ Indication of excessive vibration of (Power Turbine Generator bearings due to loos' Reducti on) bolting on exciter case flange.

Tightened same.

I 2 3 4 l': Fois ed Itcason: Method:

S: St heilnied Exhibit G. Instsuctions A Ik iniement Failure (Explain) 1 Manual for Picparation of Data n Maintenance or Test 7 Manual Serain. Enity Sheets f ur 1.icensee C ltefueling: 3 Automatic Scram. Event Itepani ILI R) File INUlti:G.

D.Het;olatory itestriction 4-Ot her (Explain) 01611 1:-Opci.itor l~taining & Ucense Examination F Administiative 5 G Opesational I elos (Explain) Exlnhit I SJme Sonsce Pt/17) Il Othen IExpl.iin)

/ ' '- Page Two of Two DOCKET NO. 50-271 UNITSilU1 DOWNS AND POWER REDUCTIONS UNIT N AhtE Vermont Yankee DATE 800212 REPORT AIONTil January, 1980 00&tPLETED ilY R. 11. Sionren TELEPilONE 617-366-9011 x2368 c

No. Date g

.$E 3g 3;; $ .5 3 jg$

Licensee [c%

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$% Cause & Currective Event o.3 Action to u!O H 5 g$ 5 Ji 5c Report

• in O Prevent itecurrence a

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80-05 800126 S 0 11 4 N/A RA CONROD Control Rod Pattern Exchange (Power Reducti in) 80-06 800131 S 6.9 D 1 N/A ZZ ZZ Shutdown for modifications required by NUREG 0578 I 2 3 4 l': l'ori cil Itcason; hf etliod: Exhibit G -Instinctions S: Stlieduleil A l'quirinent Failure (Explain) 1 hf anual for Piccaration of Daia n hlaintenance of Test 7 htanual Serain. Enity Sheets f or I.icensee C Refueling 3 Antonuti Scrain. Event Itcpos t (LI:lt) I' !c (NUllEG- -

D-Itegulatory Resirictios 4 Oiher (Explain) 0161) li Opci.itor Training & Lkense Examination F Adinini teative 5 G Opciational I seur (1:xpl.iin) Entnbit i . Sanie Sonice t'l/17) 11 tithes (limpliin)

DOCKET NO. 50-271 UNIT Vermont Yankee DATE 800212 COffPLETED BY R. M. Sjogren TELEP110NE 617-366-9011 x2368 SAFETY ltELATED !!AlfilENANCE January 1980 NNIUltti UF LER Olt OUI' AGE flALFUNCT10N EQUll'f flint flAlfflENANCE NUf!BER CAUSli itESULT Col'ItECTIVE ACTION llCU 26-23 Corrective N/A Worn "O" Ring Nitrogen Leakage Replaced "0" Ring MR 79-1088 "B" Reactor Water Corrective N/A Worn Gaskets Leakage Replaced Caskets Cleanup Pump Suction MR 79-1139 Flange RilR Valve V10-81B Corrective Outage Worn Packing Leakage Repacked Valve MR 80-14 80-1 RilR Valve V10-25B Corrective N/A Worn Packing Leakage Adjus ted Packing MR 80-44 "A" Diesel Generator Corrective N/A Worn Packing Leakage Adjusted Packing Air Start Valve 91C MR 80-63 G

E

Page One of Two DOCKET NO. 50-271 UNIT Vermont Yankee DATE 800212 COMPLETED BY R. M. Sjogren TELEPHONE 617-366-9011 x2368 rep 0RT MONTH January, 1980 SU't!ARY OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 87.3% of rated thermal power for the month.

Gross electrical generation was 351,821 MRHe or 87.6% design electrical capacity.

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

1/1/80 At the beginning of the reporting period, the plant was generating at 99% of rated thermal power.

1/5/80 At 0545 commenced shutdown to repair leaking RHR valve V10-81B.

At 0922 the turbine was removed from the grid.

1/6/80 At 0045 repairs were completed and the reactor was critical. The '

turbine was phased into the grid at 1221.

1/10/80 At 0100 power was reduced to perform a control rod pattern adjust-ment.

At 0730 the adjustment was completed and a power ascension was initiated.

1/18/80 At 2300 power was reduced to perform turbine surveillance and a control rod pattern adjustment.

1/19/80 At 0430 the control rod pattern adjustment was completed and a power ascension initiated.

1/20/80 At 0530 a power reduction was initiated due to an indicated in-crease in turbine vibrations.

At 1205 the power reduction was terminated at 30% power.

At 1440 repairs were completed and a power ascension was initiated.

Page Two of Two DOCKET NO. 50-271 UNIT Vermont Yankee DATE 800212 COMPLETED BY R. M. Sjogren TELEPHONE 617-366-9011 x2368 REPORT MONTH January, 1980 SU.' NARY OF OPERATING EXPERIENCES 1/26/80 At 0100 a power reduction was initiated for a control rod pattern adjustment.

At 0900 the adjustment was completed and a power ascension initiated.

1/31/80 At 1200 a shutdown was initiated in response to orders from the Nuclear Regulatory Commission.

At 1709 the turbine was removed from the grid.

At the end of the reporting period, the plant was shutdown and cooled down.