ML20023C237

Monthly Operating Rept for Apr 1983

ML20023C237
Person / Time
Site:	Vermont Yankee
Issue date:	05/09/1983
From:	Burger F VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20023C236	List: ML20023C235 ML20023C237
References
NUDOCS 8305170007
Download: ML20023C237 (7)

Text

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VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAI, REPORT 83-04 FOR THE MONTH OF APRIL, 1983 0305170007 830512 PDR ADOCK 05000271 R PDR i

l OPERATING DATA REPORT DOCKET NO. 50-271 DATE 830509 COMPLETED BY F.J. Burger TELEPHONE 802/257-7711 Ext. 136 OPERAT7NG STATUS tes

1. Unit Name: Vermont Yankee

2. Reporting Period: April

3. Licensed Thermal Power (MWt): 1593

4. Nameplate Rating (Gross MWe): 540

5. Design Electrical Rating (Net MWe): 514(oc) 504(cc)

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:

N/A

9. Power Level to Which Restricted,If Any(Net MWe): N/A

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

- This Month Yr-to-Date Cumulative

11. Hours In Reporting Period 719.00 2,879.00 ---

12. Number Of Hours Reactor Was Critical 0.00 1,471.42 75,014.41

13. Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours Generator On-Line 0.00 1,459.20 72,878.89

15. Unit Reserve Shutdown Hours 0.00 0.00 0.00

16. Gross Thermal Energy Generated (MWH) 0.00 1,939,956.50 105,029,199.00-

17. Cross Electrical Energy Generated (MWH) 0.00 666,902.00 34,928,0'>9.00

18. Net Electrical Energy Generated (MWH) 0.00 637,364.00 33,127,905.00

19. Unit Service Factor 0.00 50.68 78.38

20. Unit Availability Factor 0.00 50.68 78.38

21. Unit Capacity Factor (Using MDC Net) 0.00 43.93 70.69

22. Unit Capacity Factor (Using DER Net) 0.00 43.07 69.32

23. Unit Forced Outage Rate 0.00 3.49 6.30

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

Refueling outage. currently in progress, started March 5, 1983

25. If Shut Down At End Of~ Report Period, Estimated Date of Startup: June 15 1983

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 830509 COMPLETED BY F.J. Burger TELEPHONE 802/257-7711 Ext. 136 MONTH April DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net) 0 17, 0 1.

0 18. 0 2.

0 19. 0 3.

0 20. 0 4.

0 0

5. 21.

0 0

6. 22.

0 0

7. 23.

0 0

8. 24.

0 0

9. 25.

0 26.

O 10.

0 0

11. 27.

0 0

12. 28.

0

13. 29.

0

14. 30.

15. 31.

16. O INSTRUCTIONS:

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

__r _ _ _ . _ . . . _ _ _ . . . __ _

UNIT SliUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 UNIT NAME vermont Yankee DATE NW REPORT MONTil April COMPLETED BY F.J. Burger l TELEP110NE 802/257-7711 Ext. 136  !

$7 N o o y Cause & Corrective No. Date g gg g gg License g 9 rt# """ *"" """

g

% g o ,

S 83-04 830305 S 719 C 3 N/A N/A N/A Continuing the 1983 Refueling Outage.

(cont) b i

1 F: Forced Reason: Method: Exhibit G- Instructions S: Scheduled A-Equipment Failure (Explain) 1- 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) ,

II-Other (Explain) t 7/80

DOCKET EO. 50-271 UNIT Vermont Yankee DATE 830509 COMPLETED BY F.J. Burger TELEPIIONE 802/257-7711 Ext. 136 SAFETY RELATED MAINTENANCE Page 1 of 2 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT HAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Drywell 111 Pressure Scram P'reventative N/A Worn Parts Relay Chatter Rebuild Relay Relay SA-K4A MR 82-0387 RCIC Valve V13-21 Corrective N/A Worn Parts Seat Leakage Lapped Seat MR 82-0726 RCIC Instrument Isolation Corrective N/A Worn Parts Leakage Replaced Valve Valve V13-87C MR 82-0882 MR 83-1090 IRM "D" Corrective N/A Failed Parts Erra tic Replaced Detector and MR 82-1070 Indication Drywell Cable IRM "B" Corrective N/A Failed Parts Erratic Replaced Detector and MR 82-1071 Indication Drywell Cable Instrument Isolation Valve Corrective N/A Worn Parts Leakage Replaced Valve A-12 for Main Steam Flow MR 82-1275 Instruments MR 82-1548 .

HPCI Low Pressure Switch Corrective N/A Worn Parts Leakage Replaced Valve PS-23-68D Instrument MR 83-0162 Isolation Valve Reactor Building Ventilation Corrective N/A Failed Parts Erratic Spiking Replaced Parts Monitor 17-452B MR 83-0265 Causing Group III Isolation a

DOCKET NO. 50-271 UNIT Vermont Yankee DATE 830509 COMPLETED BY F.J. Burger TELEPIIONE 802/257-7711 Ext. 136 SAFETY RELATED MAINTENANCE NATURE OF ER OR OUTACE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Reactor Jet Pump Instrument Corrective N/A Worn Parts Leakage Block Valve 2-3-64W Replaced Valve MR 83-0278 Reactor Jet Pump Instrument Corrective N/A Worn Parts Leakage Replaced Valve Block Valve 2-3-63B MR 83-0283 Of f Gas Rad Fonitor Corrective N/A Failed Parts 17-150A Erra tic Replaced Drawer MR 83-0437 Indication RWCU Valve V12-74 Corrective N/A Worn Parts Seat Leakage Lapped Seat and MR 83-0516 Ground Disc Main Steam Flow Instrument Corrective N/A Worn Parts Leakage Replaced Valve Block Valve MR 83-0569 RWCU Valve V12-68 Corrective N/A Failed Limit Valve Continues Replaced Limit Switches MR 83-0608 Switches To Drive Shut and Valve Stem After Closed l

1 s

Q _ - - _ _

DOCKET NO. 50-271 UNIT Vermont Yankee DATE 830509 COMPLETED BY F.J. Burger TELEPHONE 802/257-7711 Ext. 136 REPORT MONTH April

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 0% of rated thermal power for the month.

Gross electrical generation was O MWH r 0 f design electrical e

capacity.

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

Throughout the reporting period the plant was shutdown for the 1983 Refueling Outage.

.