ML20042A853

Monthly Operating Rept for Feb 1981

ML20042A853
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	03/09/1981
From:	Bernard D VERMONT YANKEE NUCLEAR POWER CORP.
To:
Shared Package
ML20042A851	List: ML20042A850 ML20042A853
References
NUDOCS 8203240208
Download: ML20042A853 (6)

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VERMONT YANKEE NUCLEAR POWER STATION

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MONTHLY STATISTICAL REPORT 81-02 l

FOR THE MONTH OF FEBRUARY, 1981 4

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'8203240208 810309 PDR ADOCK 05000271 R

PDR

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l OPERATING DATA REPORT DOCKET NO. 50-271 DATE R101oo COMPLETED BY D.

Bernard-TELEPHONE 617-872-8100 Ext. 2390 OPERATING STATUS Notes

. Unit Name:

Vermont Yankee Rzporting Period: February 1981 Licensed Thermal Power (bMt):

1593 Namsplate Rating (Gross >Me):

540 Design Electrical Ratlng(Net SNe):

514 (onen) 504 (closed)

Maximum Dependable Capacity (Gross FMe): 535 Maximum Dependable Capacity (Net FMe):

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

Power Level to Which Restricted,If Any(Net >Me):

i. Reasons For Restrictions, If Any:

This Month Yr -to-Date Cumulative Hours In Reporting Period 672.00 1416.00 Number Of Hours Reactor Was Critical 672.00 1416.00 58.951.78 Reactor Reserve Shutdown Hours 0.00 0.00 0.00 Hours Generator On-Line 672.00 1366.60 56,968.18 l

Unit Reserve Shutdown Hours 0.00 0.00 0.00 Gross Ther=al Energy Generated (FMH) 1.063.277.50 2,054,859.00 80.658.376.00 l

Gross Electrical Energy Generated (MWH) 363.092.00 694.838.00 26.807.685.00 Net Electrical Energy Generated (>MH) 348,721.00 666.753.00 25.414.332.00

). Unit Service Factor 100.00 96.51 76.94 Unit Availability Factor 100.00 96.51 76.99

,. Unit Capacity Factor (Using MDC Net) 102.96 93.43 68.15 f.UnitCapacityFactor(UsingDERNet) 100.96 91.61 66.82 f.UnitForcedOutageRate 0.00 1.49 7 ??

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

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h.IfShut Down At End Of Report Period, Estimated Date of Startup:

f.UnitsInTestStatus(PriortoCo==ercialOperation):

Forecast Achieved i

INITIAL CRITICALITY

' INITIAL ELECTRICITY l

COMMERCIAL OPERATION

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AVERAGE DAILY UNIT ?OWER LEVEL 2

.4 DOCKET NO.

50-271 UNIT Vermbnt Yankee DATE 810309 1

COMPLETED BY '"

.F.J.

Burger TELEPHONE' '802-257-7711 Ext. 137 i

MONTH February DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net)

(MWe-Net)'

1.

513 17, 522 2.

522 18.

522 3.

521 19.

521 4.

522 20.

522 5.

521 21.

521 6.

521 22, 495 7.

491 23.

521 8.

521 24.

522 9.

522 25.

522 10.

521 26.

522 11.

522 27.

523 12.

522 28.

522 13.

521 29.

14.

521 30.

15.

509 31.

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16.

522-

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INSTRUCTIONS:

On this for=at, 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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s UNIT SilUTDOWNS AND POWER FEDUCTIONS.

DOCKET NO 50-271 UNIT NAME Vermont Yankee DATE 810309 REPORT MONTil February COMPLETED BY F.J. Burger TELEPllONE 802-257-7711 Ext. 137 S 12 Cause & Corrective m

o Licen:-e No.

Date y

j g g

y 7j g g4 Action to Rep t0 x

g u

e 81-04 810207 S

O B

4 N/A IIA TURBINE Power reduction for turbine generator (Power RB CONROD and control rod surveillance.

reduc-tion) 81-05 810222 F

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4 N/A MB CKTBRK Power reduction due to a loss of control (Power power to the Augmented Off-Cas System reduc-caused by a blown fuse. Fuse replaced tion) and the circuit tested satisfactorily.

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l 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 & Lic(nse Ixamination 5

F-Administrative Exhibit I - Same Source G-Operational Error (Explatn)

II-Other (Explain) 7/80

DOCKET NO.

50-271 UNIT Vermont Tcnkee

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DATE 810309 COMT ETED BY F.J. Burger TELEPHONE 802-257-7711 Ext / 137 SAFETY RELATED MAINTENANCE.

NATURE OF MALFUNCTI0tt LER OR OUTAGE EQUIPMENT MAINTENANCE NUMBER CAUSE RESULT CORRECTIVE ACTION "B" SBGT Train lienter Corrective N/A Worn Parts IIcater Control-Replaced Controller MR 80-712 ler Required Frequent Reset-ting.

TIP Machine #3 Contain-Corrective N/A Normal Wear Leakage Replaced "O" Rings ment Penetration MR 80-1051 "A" Reactor Protection Corrective N/A Failed Parts Power Supply Replaced Power Supply System Analog Cabinet MR 81-202 Failure "B" SBGT Train Fan Corrective N/A Worn Parts' Fan Drive Belt Replaced Belt MR 81-222 Broken "A" SBGT Train Demister Corrective N/A

' Normal Operation Demister Exhib-Replaced Filter MR 81-227 ited High Diff-crential Press-ure.

ECIC EGR Corrective LER Broken Connector RCIC Inoperative Replaced Connector MR 81-230 81/08/3L Service Water Pump Corrective N/A Normal Wear Packing Leakage Repacked Pump P-71A MR 81-2,49

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50-271 UNIT Vermont Yankee DATE 810309.

COMPLETED BY F.J. Burger TELEPHONE 802-257-7711. Ext. 137 REPORT MONTH February

SUMMARY

OF OPERATING EXPERIENCES Highlights Vermont Yankee operated at 99.3%

of rated thermal power for the month.

Gross electrical generation was 363,092 MWH, or 100% of design electrical capacity.

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

2/1/81 At the beginning of the reporting period the plant ada operating at 90% of rated thermal power.

Turbine generator surveillance was in progress.

2/7/81 At 0700 hrs, a power reduction was initiated for turbine generator and control rod surveillance. At 1200 hrs. a return to full power was initiated.

2/22/81 At 0020 hrs. a power reduction was initiated due to the loss of of the A0G System control power.

Turbine generator surveillance was also completed.

At 0100 hrs. repairs were completed and a return to full power initiated.

2/28/81 At the end of the reporting period the plant was operating at 99.8% of rated thermal power.

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