ML19347F050

Monthly Operating Rept for Apr 1981

ML19347F050
Person / Time
Site:	Vermont Yankee
Issue date:	05/08/1981
From:	Burger F VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML19347F047	List: ML19347F046 ML19347F050
References
NUDOCS 8105150135
Download: ML19347F050 (7)

Text

APPENDIX A Change 1: Facility Data Section a.) Revise Itera No. 11, Corporate Address, to read: "1671 Worcester Rd.

Framingham, Mass. 01701" b.1 Revise Item No. 12, Corporate Contact, to read: "L.D. Marsolais Project Manager" Change'2: Operating Status Section a.) Revise Item No. 2 Utility Contact, to read: "F.J. Burger (802) 257-7711" 8105150

VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 81-04 FOR THE MONTH OF APRIL,1981 I

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OPERATING DATA REPORT DOCKET NO, 50-271 DATE 810508 COMPLETED BY F.J. Burmer TELEPHONE (802)257-7711 Ext. 137 OPERATING STATUS Notes

1. Unit Name: vermont Yankee

2. Reporting Period: April 1981

3. Licensed Thermal Power (Wt): 1 sot

4. Nameplate Rating (Gross We): 540

5. Design Electrical Rating (Net We):514 fonen) 504(closed)

6. Maximum Dependable Capacity (Gross We): 535

7. Nav4=a= Dependable Capacity (Net We): 504

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)Since Last Report, Give Reason

9. Power Level to Which Restricted,If Any(Net W e):

10. Reasons For Restrictions, If Any:

-: .This Month Tr :to-Date Cumulative

11. Hours In Reporting Period 719.00 2.879.00 ---

12. Number Of Hours Reactor Was Critical 719.00 2,879.00 60,414.78

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 719.00 2,829.60 58,431.18 ,

15. Unit Reserte Shutdown Hours 0.00 0.00 0.00 i

16. Gross Thermal Energy Generated (WR) 12 140.623.50 4,310,482.50 82,913,999.50

17. Cross Electrical Energy Generated (WH) 388,974.00 1.462.687.00- -

th575.534.00

18. Net Electrical Energy Generated (WH) 373.238.00 1,403.738.00 26,151,317.00

19. Unit Service Fdetor '

100.00 98.28 77.43

20. Unit Availability Factor inn.nn 98.28 77.43

21. Unit Capacity Factor (Using MDC Net) 103.00 96.74 68.76

22. Unit Capacity Factor (Using DER Net) 100.99 _ 94.86 67.42

23. Unit Forced Outage Rate 0.00 1.72 7.05

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

Refueline outane scheduled to start October 24, 1981 and continue for six weeks.

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

26. Units In Test Status (Prior to Commercial Operation): Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION

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AVERAGE DAILY UNIT TOWER LEVEL DOCKET NO. 50-271 UNIT vehont Yantrae DA!E 81050A COMPLETED BY F.J. Burner TELEPHONE (802)257-7711. Ext.137 MONTE April DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 522 17. 521

2. 521 18. 520

3. 521 19. 512

4. 522 20. 522

5. 504 21. 320

6. 519 22. 521

7. 520 23. 521

8. 520 24. s?1

< 9. 520 25, 521

10. 520 26. 491

11. 520 27, 521 511 * ~'

12; 28. ? 526 * .

13. 519 29. 520 14, 520 30. 520

15. 520 31. -

16. 520 INSTRUCTIONS:

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DOCKET NO. 50-271 .

e UNIT ver=nne v nha, DATE At Mna 2,OHPLETED BY F.J. Burger TELEPHONE (802) 257-7711

._SAFET1 SLATED H\INTENANCE NATURE OF MAbUNCTION OR O GE EQUIPMENT MAINTENANCE NUMBER CAUSS RESULT CORRECTIVE ACTION Pre:. cure Switch,PS-2 'il-2C, Corrective N/A Dirt Switch Stuck in Disassembled and Cet -C" Main Steam Reliet MR 81-366 Closed Position Cleaned Switch Valve Discharge Line Nitrogen Inerting Valve Corrective N/A Aged Components Failed Solenoid Replaced Solinoid V 16-20-20 MR 81-436 Main Steam Radiation Corrective N/A Aged Componenets Relay Hot Replaced Components Monitor Relay 16A-K44D MR 81-472 "B" Diesel Temperature Corrective N/A Dirt, Loose Indicators Not Cleaned and Re-soldered Indicators, #1 & #4 MR 81-476 Connections Functioning Connections Reactor Pressure Transmitt- Corrective N/A Worn Seat Leakage Replaced Valve ing PT 6-53A, Test Valve MR 81-506 O

DOCKET NO. 50-771 UNIT Vermont Yankee DATE 810508 COMPLETED BY F.J. Burger TELEPHONE (802)257-7711 Ext.137 RE*0RT MONTH April

SUMMARY

OF C?IRATING ZXPERIENCES Hiah11thes Vermonc Yankee operated at 99.58% of rated thermal power for the month.

Cross electrical generation was 388,974 MWH, or100.18%of design electrical capacity.

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

4/1/81 At the beginning of the reporting period the plant was operating at 99.8% of rated thermal power.

4/30/81 At the end of the reporting period the plant was operating at 99.8% of rated thermal power.

Operations for the month produced the highest thermal capacity factor to date-(.99.6%).

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