ML20042B029

Monthly Operating Rept for Aug 1981

ML20042B029
Person / Time
Site:	Vermont Yankee
Issue date:	09/10/1981
From:	Burger F VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20042B027	List: ML20042B026 ML20042B029
References
NUDOCS 8203240412
Download: ML20042B029 (6)

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VERMONT YANKEE NUCLEAR POWER STATION i

MONTHLY STATISTICAL REPORT 81-08 i FOR THE MONTH OF AUGUST, 1981 I

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B203240412 810910 PDR ADOCK 05000271 R PDR

l OPERATING DATA REPORT DOCKET NO, 50-271 DATE 810910 COMPLETED BY F.J. BurRer TELEPHONE (802)257-7711 Ext.

137 OPERATING STATUS Notes

1. Unit Name: Vermont Yankee

2. Rxporting Period: August

3. Licensed 'hermal T Power (MWt): 1593

4. Nam: plate Rating (Gross MWe): 540

5. Dasign Electrical Rating (Net MWe):51.4(ncisn4(cri

6. Maximum Dependable Capacity (Gross MWe): 535

7. Maximum Dependable Capacity (Net MWe): 504

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

9. Power' Level to Which Restricted,If Any(Net MWe):

10. Reasons For Restrictions, If Any:

This Month Yr-to-Date Cumulative

11. Hours In Reporting Period --

744.00 5831.00 -

12. Number Of Hours Reactor Was Critical 744.00 5798.12 63333.90

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator Cr-Line 744.00 5740.05 61341.63

35. Unit Reserve Shutdown Hours o.00 n.00 0.00

16. Gross Thermal Energy Generated (MWH) 1150394.00 8860950.00 87464467.00

17. Gross Electrical Energy Generated (MWH) 173797.00 70sn776_nn _

29063623.00

18. Net Electrical Energy Generated (MWH) 351032.00 2804599.00 27552178.00

19. Unit Service Factor :100.00 98.44 78.23

20. Unit Availability Factor 100.00 _98.44 78.73

21. Unit Capacity Factor (Using MDC Net) 93.61 95.43 69.72

22. Unit Capacity Factor (Using DER Net) '1.79 9 93.58 68.36

23. Unit Forced Outage Rate 0.00 1.56 6.80

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

Refueling outage scheduled to start October 17, 1981 and continue for seven weeks.

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

. AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 .

UNIT Vermont Yankee DATE 810910 COMPLETED BY F.J. Burger TELEPHONE (802)257-7711 Ext. 137 MONTH Aucust DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 390 17. 489

2. 349 18. 490

3. 452 19. 490

4. 483 20. 489

5. 483 21._ 488

6. 486 22. 487

7. 487 23. 428

8. 487 24. 487

9. 466 25. 489

10. 482 26. 491

11. 484 27. 473

12. 484 28. 481

13. 484 29 - 488 -

14, 486 30. 483

15. 484 31. 486 16, 461 4

' INSTRUCTIONS:

On this format, list the average daily unit power level in MWe Tet for each day in the reporting month. Compute to the nearest whole megawatt.

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UNIT SilUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 UNIT NAME Vermont Yankee August DATE 810910 REPORT MONTl!

COMPLETED BY F.J. Burger TELEP110NE (802)257-7711 Ext. 13/

H cm m Su a No. -

Date m M0 "a M3 License s @c ause & Corrective

1. 8 ^ 'i " '

E 8 108 Event 3 4l 84; N a$6 M E 6.E$

em Report # $0 m

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81-13 810801 S 0 11 4 N/A  : RB CONROD Power reduction for control rod pattern (Power exchange. Plant maintenance and Reduct- surveillance tests were also performed.

ion) .

81-14 810827 F 0 A 4 N/A liG DEMINX Power reduced while investigating (Power condensate demineralizer problem.

Reduct-lon)

F: Forced Reason: Method: Exhibit G- Instructions S: Scheduled A-Equipment Failure (Explain) l- Manual for Preparation of Data B-Maintenance or Test 2- Manual Scram Entry Sheets for Licensee C-Refueling 3- Automatic Scram Event Report (LER) File D-Regulatory Restriction 4- Other (Explain) (NUREG 0161)

E-Operator Training & License Examination F-Administrative 5 Exhibit I - Same Source G-Operational Error (Explain)

Il-Other (Explain) w 7/80 _ _ _ _ _ _ _ _ _ _ _ _ _ _

UNIT Vermont Yankee DATE 810910 COMPLETED BY F.J. Burger TELEPHONE (802)257-7711 Ext. 137 SAFETY RELATED MAINTENANCE NATURE OF MALFUNCTION ER OR OUTAGE MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION EQUIPMENT

'RM "C" Corrective N/A Faulty Parts Poor Response Replaced Parts as MR 81-0802 Necessary

fuel Crane Frame lloist Corrective N/A Worn Parts Inoperable Replaced Switches

>aded Limit Switches. MR 81-0846

(" & "B" RilR Service Corrective N/A Normal Operation Clogged Cleaned Strainers ster Pump Suction MR 81-0887 Strainers.

trainers. and 81-888 lIC Valve V13-18 Valve Corrective N/A Failed Torque Valve Operates Replaced Torque Switch 3erator MR 81-0890 Switch As a Throttle Valve Instcad of An Isolation Valve.

(D Accumulator Corrective N/A Failed Parts Alarm at In- Replaced Switch 2-07 Pressure Switch MR 81-0904 correct Pressure

IC Turbine Governor Corrective LER EG-R Actuator Loss of Valve Replaced EG-R Actuator ilve. MR 81-0931 81-24/3L Failure Control IR Valve V10-65B Corrective N/A Worn Packing Leakage Adjusted Packing MR 81-0967 i

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DOCKET NO. 50-271 UNIT Vermont Yankee DATE 810910 COMPLETED BY F.J..Ecrger TELEPHONE (802)257-7711 Ext. 137 REPORT MONTH August l

St& DIARY'0F OPERATING EXPERIENCES Highlights Vermont Yankee operated at ' 97.06% of rated thermal power for the month.

Gross electrical generation was 373,797 MWH e er 93.04% of design electrical capacity.

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

8/1/81 At the beginning of the reporting period the plant was operating at 99.8% of rated thermal power. ,

.8/1/81 At 0830 hrs. a power reduction was initiated for a control rod pattern exchange. OtMer plant maintenance and surveillance items were completed at thi= time. -

8/1/81 At 2000 hrs. a return to full power was initiated.

8/27/81 At 2200 hrs. a power reduction was initiated to investigate a condensate demineralizer problem.

8/28/81 At 0015 hrs. a return to full power was initiated.

8/31/81 At the end of the reporting period the plant was operating at 99.8% of rated thermal power. '-

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