ML20064C219

Monthly Operating Rept for Sept 1978

ML20064C219
Person / Time
Site:	Vermont Yankee
Issue date:	10/12/1978
From:	Sjogren R VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20064C215	List: ML20064C210 ML20064C219
References
NUDOCS 7810170193
Download: ML20064C219 (6)

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VERMONY YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 78-9 FOR THE MONTH OF SEPTEMBER, 1978 I

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OPERATING DATA REPORT

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i 50-271 i

DOCKET NO. ~

DATE 781012

. COMPLETED BY R M- Sioeren i TELEPHONE (6171366-9011X2281 t ,

i OPERATING STATUS i

Notes

1. Unit Name: Vermont Yankee

2. Reporting Period:

Sentember, 1978 1593

3. Licensed Thermal Power (MWt):

4. Nameplate Rating (Gross MWe):

540

5. Design Electrical Rating (Net MWe):

514 (open cycle) 504 losed

6. Maximum Dependable Capacity (Gross MWe): 535 504

7. Maximum Dependable Capacity (Net MWe):

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

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9. Power Level To Which Restricted,if Any(Net MWe): None

10. Reasons For Restrictions,if Any: N/A

. This Month Yr to.Date Cumulative .

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11. Hours in Reporting Period 720 6.551 52,825.75

12. Number Of Hours Reactor Was Critica] 363 5.106.25 42,142.11

13. Reactor Reserve Shutdown Hours 0 0 0-

14. Hours Generator on.Line ,

362 5,018 . 40,466 0 0 0 .

15. Unit Reserve Shutdown Hours

16. Gross Thermal Energy Generated (MWH) 530,615.'5 7,613,080.5 55,954,223 i

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17. Gross Electrical Energy Generated ($WH) 174.880 ' , _ ,

2.570.214 18.514,924

18. Net Electrical Energy Generated (MWH) 163,623 2,449,505 17,528,338

'50.3 76.6 76.6

19. Unit Service Factor

20. Unit Availability Factor 50.3 76.6 76.6

21. Unit Capacity Factor (Using MDC Net) 45.1 74.2 65.8

22. Unit Capacity Factor (Using DER Net) 42.2 72.7 64.6

23. Unit Forced Outage Rate 0 18.5 7.0

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

October 12, 1978

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

26. Units in Test Status (Prior to Commercial Operation): Forecast Achieved

,- INITIA L CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION (9/77)

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AVERAGE DAILY UNIT POWER LEVEL l

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I DOCKET NO. 50-271 i

UNIT Vermont Yankee DATE 781012 COMPLETED BY R.M. Siocren TELEPHONE (617)366-9011X2281 AIONTH September, 1978 DAY AVERAGE DAILY POWER LEVEL DAY AVER AGE DAILY POWER LEVEL (MWe-Net) (MWe Net!

I 465 17 0

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2 464 3' 457 39 4 461 20 5 460 yj 6 M6 22

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7 454 23 g 460 458 9

456

=l 10 26 3g 449 27 448 g ,- 28 13 453 g '

g4 450 30 I

15 3g V

7 16 INSTRUCTIONS On this format. fist the aserage daily unit power levelin MWe Net for each day in the reporting month. Compute to the nearest whole megawait.

(9/77 )

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) . ,' 't DOCKET NO. 50-271 .

UNIT Sil01 DOWNS AND POWER REDUCTIONS '

UNIT NAME Vermont Yankee DATE 781012 COMPLETED BY R.M. Sionren REPORT MONTil o ntember. 1978 TELEPilONE (617T366-9011 X2281

, .$g };; E I.icensec [ t, o Cause & Corrective No. Date Q 5g osy Event 3,7 gU3 Action to F

fE 5 3gc Report er un U U

o Prevent Recurrence Q

f s 78-17 78091S S 358 C 1 NA RCA FUELXX NA t

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I l 1 2 3 4 F: Forced Reason: Method: Exhibit G -Instructions S: Scheduleil A. Equipment Failure (Explain) 1 Manual for Preparation of Data H. Maintenance of Test 2-Manual Scram. Entry Sheets for Licensee C Refueling 3 Automatic Scram. Event Reporn (1.ER) File (NUREG-D Regulatory Rcstriction 4 Other (Explain) 0161) l E-Operator Training & License Examination  :

F-Administ rative $

G Operational Eiror (Exp;ain) Exhibit I Same Source (9/77) ll Olher (Explain)

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r n IX)CKET NO. 50-271 UNIT Vermont Yankee DATE 781012 C0!!PLETED BY R. M. Sincren TELEPil0NE (6171 366-9011 X2281-SAFETY RELATED MAINTENANCE NATURE OF LliR OR OUTAGli MALI; UNCTION

.EQUIPf1ENT MAlf1TENANCE NUf!BER CAUSL RLSULT CORRECTIVE ACTION "B" Service Water Pump Preventive Outage Normal Maintenance NA Replace Worn Parts and-MR 78-948 78-6 Inspection Rebuild as Necessary Refuel Crane Corrective Out'a'ge Pinched Cable Flattened Cable Replaced Cable MR 78-956 78-6 Refuel Floor fa Reactor Corrective butage Failed Power Monitor Failed Replace Power Supply Building Ventilation MR 78-958 78-6 Supply Down Scale 5

Monitor .

t IIPCI Pump Corrective Outage Failed Seal Leakage Replaced Seal MR 78-487 78-6 U'S-1A Feeder Breaker Corrective Outage Bent Bracket Misaligned Breake - Strengthened Bracket- .

6C on Bus 9 MR 78-709 78-6 Sleeve l

l "B" Diesel Generator Corrective Outage Loose and/or Dirty Sluggish Control Tightened and Cleaned Voltage Control MR 78-71S 78-6 Components Components ,

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Service Water Strainer Corrective Outage Clogged Strainer Strainer Cannot Removed and Cleaned Strainct 1-A MR 78-748 78-6 Be Backwashed l i

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• i u DOCKET NO. 50-271 -

UNIT Vermont Yankee DATE 781012 C0!!PI,ETED BY R. M. Sjogren TELEP110NE (617) 366-9011 X2281 .

SAFETY RELATED PIAI?ffENANCE NATURE OF LER OR OtfrAGE MALFUNCTION i EQUIP:1ENT PIAINTENANCE NUf1BER CAUSh RESULT CORRECTIVE ACTION "B" RilR Service Water Corrective -

Outage Failed Shaft Seal Leakage Replaced Parts as Pump MR 78-805 78-6 Necessary -

"B" Station Battery Corrective NA tow liigh Voltage Alarm Reset fligh Voltage Charger MR 78-843 Alarm Trip Setting Alarm Trip s

Containment Air System Corrective LER Dirt 6 Corrosion Leakage Past Valve Cleaned As Necessary Check Valves V72-89B MR 78-855 78-25/3L Seat 6C '

RCIC Steam Line Drain Corrective Outage Failed Packing Leakage Repacked Valve 2

Valve V800B MR 78-872 78-6

• RilR Valves V10-26A and Corrective Outage Failed Gaskets Leakage Replaced Gaskets V10-31A MR 78-901 78-6 LPRM Card SD-40-25 Corrective Outage Failed Potentiome- Could Not Adjust Replaced Potentiometer MR 78-903 78-6 ter Trip Setting

, "B" RliR Service Water Corrective Outage Clogged Strainer liigh DP Cleaned Strainer  !

Pump Strainer MR 78-911 78-6 l Refuel Crane Corrective Outage Pinched Cable Frayed Cable Replaced Cable MR 78-941 78-6 i

A Diesel Generator Corrective Outage Lodse Fitting Fuel Oil Leak Tightened Fitting ,

MR 78-943 78-6 i

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DOCKET NO. 50-271 UNIT Vermont Yankee DATE 7R1012 COMPLETED BY R. M. Siocren TELEPHONE (617) 366-9011 X2281 REPORT MONTH September, 1978 s

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated for 15 of 30 days in the report period. For the entire month of September, the plant operated at an average of 46.3's of rated thermal power. Gross electrical generation for the month was 174,880 MWHe, or 45*. of design electrical capacity. On September 16th, the plant shut down for refueling.

Operation Summary The follawing is a chronological description of plant operations, including other pertinent items of interest for the month:

9-1 At the beginning of this report period, the plant was operating at 95*, power, in the process of coastdown

(' for the refu'eling outage.

9-15 At 2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />, a Rear. tor Shutdown was initiated ia order to commence with the refueling.

9-30 At the end of this -eport period, the plant was in the shutdown mode as the refueling outage continued.

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