ML20066D260

Monthly Operating Rept for Vermont Yankee Nuclear Power Station for Dec 1990

ML20066D260
Person / Time
Site:	Vermont Yankee
Issue date:	12/31/1990
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
VYV-91-002, VYV-91-2, NUDOCS 9101140278
Download: ML20066D260 (6)

Text

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'l% ) VERMONT Y ANKEle NUCLEAR POW 10R COR POR ATION P. O. BOA 157 GOVERNOR I!UNT ROAD VERNON, VERMONT 05354 January 10, 1991 VYV 91-002 U.S. Nuclear Regulatory Commission A. ?N : Document Control Desk Washington, D.C. 2055.5

Dear Sir:

Submitted herewith is the Monthly Statistical Report for the

-Vermont Yankee Nuclear Power Station for the month of December, 1990.

Very truly yours, VERMONT YANKEE NUCLEAR POWER CORP.

W (M Warren Mur h Senior ice Pre t, Operations cc: 1) USNRC Region I 475 Allendale Road King of Prussia, PA 19406

2) USNRC Resident Inspector, VYNPS DP 0411 Rev. 3 Page 1 of 1 9101140278 901231 -

PDR R

ADOCK 05000271 PDR [M M l lK_ __ _

t VERMONT YANKEE NUCLEAR POWER STATION MONTi!LY STATISTICAL REPORT 90-12 FOR Tile MONTil OF DECEMBER, 1990 DP 0411 Rev. 3 Page-1 of 1

7 OPERATING DATA: REPORT DOCKET No. 50-271 DATE 910110=

COMPLETED BY 'O.A.__Wallin

~ OPERATING = STATUS.

TELEPHONE (802)257-7711

?1.;. Unit Name . Vermont Yankee NOTES:

13. jReporting. Periods?. December 3 ~.

Licensed-Thermal Power (MWt): 1593 I4 ". - Nameplate' Rating (Gross MWe): 540

5. ~ Design Electrical' Rating (Net MWe): 514(oc) 504(ce) i6. LMaximum Dependable-Capacity (Gross-MWe): 535 7.- Maximum Dependable Capacity (Net MWe): 504 L8L -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 310;' ' Reasons; for~ restrictions, if any: N/A This Month Yr-to-Date Cumulative 111 .. Hours: In ReportingJPeriod-' . _ 744.'00 8760.00= 158520.00 11 2. Number Of Hours Reactor was Critical 744.00- 7522.77 128188.63

13. ' Reactor Reserve Shutdown' Hours 0.00 0.00- - 0. 0 0 :

114n. Hours Generator-On-Line 744.00 7394.53 125371.60- -

15. ~ Unit Reserve! Shutdown Hours 0.00 0.00 0.00 1 11 6.. Gross ThermalLEnergy: Generated (MWH)_1145248.00 "

~ 17L= Gross Electrical Energy-Generated- 384714.00 11305748.50- 185315305.00 3793606.00 61747495.00

,18. - -Ne t L Elect rical Ene rgy: Gene ra ted(MWH ) 3 689 5 4. 00 ' 3616271.00 58631970.00 119:. -UnitwService=ractor 100.00. 84.41 =78.25 T20 4 < Unit Availability _ractor: _ _ _. _

<100.00 84'.41 78.25-21~." Unit Capacity ~=ractor(UsingLMDC-Net')

n 2 2 .1 UnitECapacity Factor (Using! DER 1 Net) 98.39' 81.91- 72.61 96.48 80.31: -71.19-l23.;-: Unit Forced' Outage Rate . 0.00 2.10 5.52:

1 24.-' Shutdowns scheduled.oversnext 6_ months (Type, Date, and. Duration-of Each):3 N/A I'

L . 2 5.1 If eshut -down a t- end of - repo r E.oe riod, estimated date of startup _N/A_

26. ;UnitsEIn Test Status (prior to :ommercial operation): N/A 3 Forecast' _ Achieved.

INITIAL CRITICALITY INITIAL 1 ELECTRICITY 1 COMMERCIALDOPERATION L VYDPF 0411.01-l -DP 0411 Rev.:3 LPage: 1 o f _1 ~

RT No. 13.rO1.19F R

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AVERAGE DAILY UNIT POWER LEVEL DOCKET NO. 50-271 UNIT Vermont Yankee DATE 910110 COMPLETED BY G.A. Wallin TELEPilONE (802)257-7711 MONTil December DAY AVERAGE DAILY POWER LEVEL DAY AVERAGE DAILY POWER LEVEL (MWe-Net) (MWe-Net)

1. 512 17. 421

2. 50F 18. 497

3. 511 19. 484

4. 511 20. 516

5. 511 21, 517

6. 512 22. 5T7 7.- 512 23, 512 8 ~. - 513 24. 492

9. 509 25, 517 10, 513 26, 517

11. 514 27, 519

12. 515 28. 513 13, 515 29. 517

14. 466 30. 516 15, 285 31. 517 16, 393 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 magawatt.

VYDPP 0411.02 DP-0411 Rev. 3 Page 1 of 1 RT No. 13.F01.18V

a UNIT SHUTDOW5S AND POWER REDUCTIONS DOCKET RO 50-271 .

REPORT MONTE DECEMBER' UNIT NAME versont Yankee DATE 91011C COMPLETED ST G.A. wellin TELEPHONE (8026257-7711 1 2 Method of License System Component Cause and Corrective No. Date ' Type Duration Reason Shutting Down Event Code Code Action to (hours) Reactor 3 Reporte 4 5 Prevent Recurrenco 90-12 901215 S 0.00 B,H 5/A N/A RS CONROD Rod pattern exchange and scheduled maintenance.

1 F: Forced 2 Reason: 3 Method; 4 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'and License Examination F-Administrative 5 Exhibit : - Same Source VYDPF 0411.03 G-Operational Error (Explain)

DP 0411 Rev 3 H-(Explain) - Rod pattern' exchange Page 1 of 1

n -- . . . . . ., .

DOCKET NO. 50-271

, UNIT Vermont Yankee

• ' l . ,_., .

DATE 910110 COMPLETED BY G.A. Wallin '

TELEPilONE J802)257-7711 REPORT MONTH December

SUMMARY

OF OPERATING EXPERIENCES Highlights.

1 Vermont--Yankee operated at 96.6% of rated thermal power for the-month.

1 Gross electrical generation was~384,714 MWHe or 95.8% design electrical

-capacity.

Operating Summary i

'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 99.9%

of:- rated the rmal power.

901215 At 0400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />, initiated a power reduction to minimum recirculation flow to perform a rod pattern exchange and scheduled maintenance.

901215 At- 0428 hours0.00495 days <br />0.119 hours <br />7.07672e-4 weeks <br />1.62854e-4 months <br />, initiated a -rod- pattern exchange. (See Unit Shutdowns and Power Reductions) 9b1215 .At 0530 hours0.00613 days <br />0.147 hours <br />8.763227e-4 weeks <br />2.01665e-4 months <br />, completed the rod pattern exchange and a return to180% power was initiated. Remaining at 80% power'until testing-of the 379 transmission.line is concluded.

-901217 'At 1337-hours,-completed testing to the 379 transmission line, and began a return to full power..

JAtithe end-of thefreporting period-the plant was operating at'100.0% of-l rated. thermal power.

'VYDPF 0411.04 DP:0411 Rev. 3

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