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Monthly Operating Rept for Mar 1983
	ML20073J348
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	04/09/1983
From:	Burger F; VERMONT YANKEE NUCLEAR POWER CORP.
To:	;
Shared Package
ML20073J331	List: ML20073J326; ML20073J348;
References
	NUDOCS 8304190272
	Download: ML20073J348 (7)
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VERMONT YANKEE NUCLEAR POWER STATION MONTHLY STATISTICAL REPORT 83-03 i

' FOR THE MONTH OF MARCH,1983 1

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OPERATING DATA REPORT' DOCKET No.

50-271 DATE 830409 COMPLETED BY F.J.: Burger TELEPHONE: 802/257-7711 Ext.-136 OPERATING STATUS :

Notes

1. Unit Name:

Vermont Yankee 2.~Raporting' Period:

March

-3. Lic'ensed Thermal Power (MWt):

1593 4.. Nameplate Rating (Gross'MWe):

2540 15.fD: sign ElectricalLRating(Net MWe):514(oc) 504(cc)'

6.LMaximum Dependable. Capacity (Gross MWe):

535

17. Maximum. Depend'able Capacity (Net MWe):

1504 L8.JIf-Changes Occur in Capacity Ratings (Items Number 3 Through 7)Since Last Report, Give Reasons:

N/A'

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

N/A' 10.~ Rsasons For-Restrictions,1If Any:

N/A This Month Yr-to-Date Cumulative-ll.? Hours In Reporting Period 744.00 2,160.00

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12. Number Of Hours Reactor Was Critical 96.06 1,471.42 75,014.41

-130 Reactor Reserve Shutdown Hours 0.00 0.00 0.00

14. Hours' Generator:On-Line 96.00 1.459.20 72.878.89 15.-UnitJReserve Shutdown Hours 0.00 0.03 0.00

16. Gross Thermal Energy Generated (MWH) 119,971.00' 1,989,956.50 105,029,199.00

'17. ' Gross Electrical ' Energy Generated (MWH) 39,962.00 666,902.00 34,928,049.00

.10.-Net Electrical Energy Generated (MWH) 38,085.00 637,364.00 33,127,905.00

19. Unit Service-Factor 12.90 67.56 78.99

20. Unit Availability Factor 12.90

67.56~

78.99

21. Unit Capacity Factor (Using-MDC Net) 10.16 58.55_

71.24 c22.-Unit Capacity Factor (Using DER Net) 9.96 57.41 69.86

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 in progress

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

May 30,1983

-26. Units In Test Status (Prior to Commercial Operation):

Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATION b

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r AVERAGE ~ DAILY UNIT POWER LEVEL DOCKET NO. '50-271 UNIT- -Vermont Yankee DATE 830409 COMPLETED-BY.

F.J. Burger TELEPHONE-802/257-7711 Ext. - 136-

~ MONTH March DAY-AVERAGE-DAILY POWER LEVEL

. DAY, AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net)~

-1.

406~

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18.

~0

'405 23.

404 19.

0 4.

-371

-20.

0

'5.-

0 21.

0

-6.

0 22.

0 7.

-0 23.

0 8.

0-2 4.,

0 9.

0 25.

0

' 10.

~0 26.

0

11..

0 27.

0 12..

0 28.

0

-13.

0 29.

0 14.

0 30.

O 15.

0 31.

0 16.

0 l-

' 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.

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'e UNIT SilUTDOWNS AND P'0WER REDUCTIONS '

D'OCKET NO.

50-271 UNIT NAME~

Vermont Yankee DATE 830409 REPORT MONTil' March COMPLETED BY-F.J.-Burger-

TELEP110NE 802/257-7711 Ext. 136 I

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Cause & Corrective

'OO dO License p.

@c No.

Date m

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$S S

3 II E Event' 3.$

88 05 E-fi.E 8 Report # 18-Re Prevent Recurrence C5 M

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83-04 830305 S

648

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N/A N/A N/A' Shutdown for.1983 Refueling Outage.

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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):

'(NUREC 0161)

E-Operator Training & License Examintition -

5 F-Adminis t ra tive Exhibit I - Same' Source C-Operational Error (Explain)-

II-Other-(Explain)-

7/80

m 50-271' DOCKET NO.

UNIT

~ Vermont Yankee DATE 830409 COMPLETED'BY F.J. Burger 802/257-7711' Ext. 136 TELEPHONE SAFETY RELATED MAINTENANCE Page 1 of 2 NATURE OF LER OR OUTAGE M M CT W EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION

' RCIC Valve V 13-21 Corrective N/A Worn Parts Seat Leakage Lapped Seat MR 82-0511 RCIC Valve'V13-20 Corrective N/A Worn Parts Seat Leakage Replaced Seal Ring MR 82-0539 l

RCIC Valve V13-30 Corrective N/A Worn Parts

' Seat Leakage Ground Disk MR 82-0545 RHR Service Water Corrective N/A Worn Motor-to-High Vibration Repaired Coupling Pump P8-1B MR 82-1281 Pump Coupling HCU's 06-27, 14-23 and Corrective N/A Worn Parts Air Leakage Replaced Tubing 18-23 Air Supply Tubing MR 82-1381 I to the Scram Valves MR 32-1442 HCU 26-23 Scram Solenoids Corrective N/A Worn Parts Valve Chatter Rebuilt Solenoids and and Pilot Valves MR 83-0119 Pilot Valves "B" Main Steam Drawer (RPS)

Corrective N/A Worn Parts Shorted Replaced Potentiometer Trip Potentiometer MR 83-0296 Potentiometer HCU 10-19 113 Valve Corrective N/A Worn Parts Seat Leakage Rebuilt Valve MR 83-0340 PCAC Valve V16-19-9 Corrective N/A Valved Used as A Valve Out.of Replaced Parts as 3

MR 83-0396 Welding Ground Corrnission

'Necessary "A" Diesel Generator Air Corrective N/A Wear / Vibration Air Leakage Replaced Tubing Compressor Unloader Supply MR 83-0402 Tubing

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DOCKET NO.

50-271 UNIT Vermont Yankee DATE 830409 COMPLETED BY F.J. Burger TELEPHONE 802/257-7711 Ext. 136 SAFETY RELATED MAINTENANCE Page 2 of 2 NATURE OF LER OR OUTAGE MALFUNCTION EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION Cooling Water Check Valve Corrective N/A Wear Valve Chatter Lapped Seats 138 on Various HCU's MR 83-0409 Feed Water' Check Valve Corrective LER 83-10/3L Seat Seal Leakage Replaced Seat Resilient V2-96A FR 83-0411 Failure Seal Reactor Recire. Discharge Preventive N/A Environment Corroded Limit Replaced Terminals and Valvas V2-53A&B FR 83-0434 Switch Contacts Cleaned Contacts-

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DOCKET NO.

50-271 UNIT Vermont Yankee

'DATE.

830409 COMPLETED BY F.J.' Burger TELEPHONE _ 802/257-7711 Ext.-136

' REPORT MONTH March' SU> DIARY OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 10.12% of rated thermal power for the month.

Gross electrical generation was 39,962 FMI, or 9.94% of design electrical capacity.

Operating Summary

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

At the beginning.of the. reporting period the plant was operating at

-80% of. rated thermal power. The coastdown toward the refueling outage was in progress.

830304 -At.2100 hours0.0243 days 0.583 hours 0.00347 weeks 7.9905e-4 months ,'a' shutdown was initiated for the refueling outage.

~830305 'At 0000 hours0 days 0 hours 0 weeks 0 months the turbine generator was removed from the grid.

s 830305 At 0004 hours4.62963e-5 days 0.00111 hours 6.613757e-6 weeks 1.522e-6 months the reactor automatically scrammed.

At the end of'the reporting period, the plant was in cold shutdown and the refuel outage in progress.

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ML20073J348

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