ML20058N663

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

ML20058N663
Person / Time
Site:	Vermont Yankee File:NorthStar Vermont Yankee icon.png
Issue date:	07/31/1990
From:	Murphy W, Wallin G VERMONT YANKEE NUCLEAR POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
VYV-90-243, NUDOCS 9008140350
Download: ML20058N663 (6)

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. V15RMONT YANKEE NUCLEAR POWER CORPORATION P. O. BOX 157 GOVERNOR IIUNT ROAD VERNON, VERMONT 05354 3

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August 10' 1990 VYV 9 0-24 3 1

l U.S.

Nuclear Regulatory Commission ATTN: Document Control Desk l

washington, D.C.

20555

Dear Sir:

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Submitted herewith is the Monthly Statistical Report for the Vermont Yankee Nuclear Power Station for the month of July, 1990.

very truly yours, l

VERMONT YANKEE NUCLEAR POWER CORP.

W

$w+

Warren P.

M rphy Senior Vic Presid Operations cc:

1) USNRC Region I 475 Allendale Road King of Prussia, PA 19406

2) USNRC Resident Inspector, VYNPS 1'

DP 0411 Rev. 3 Page 1 of 1 l

1 9008140350 900731 PDR ADOCK 05000271 R

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. VERMONT YANKEE-HUCLEAR POWER STATION.-

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' MONTHLY = STATISTICAL' REPORT 90-07.

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'FOR THE MONTH OF: JULY,~1990' j

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OPERATING DATA REPORT DOCKET NO.

50-271

.DATE 900810 COMPLETED BY G.A. Wallin TELEPHONE (802)257-7711 i

OPERATING STATUS 1.

Unit Name Vermont Yankee NOTES:

2.

Reporting Period:

July 3.

Licensed Thermal Power (MWt):

1593 4.

Nameplate Rating (Gross MWe):

540 5.

Design Electrical Ratirig(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:

t N/A 9.

Power level to which restricted, if any(Net MWe):

N/A 10.

Reasons for testrictions, if any:

N/A This Month Yr-to-Date Cumulative-11.

Hours In Reporting Period 744.00 5087.00 12.

Number Of Hours Reactor was Critical 744.00 4928.32 125594.18 13.

Reactor Reserve Shutdown Hours 0.00

-0.00 0.00 14.

Hours Generator On-Line 744.00 4841.78 122818.85 15.

Unit Reserve Shutdown Hours 0.00 0.00 0.00 16.

Gross Thermal Energy Generated (MWH)1111327.00 7528002.00 181537558.50 17.

Gross Electrical Energy Generated 366019.00 2533578.00 60487467.00 18.

Net Electrical Energy Generated (MWH)343218.00 2416646.00 57432345.00 19.

Unit Service Factor 100.00 95.18 78.45 20.

Unit Availability Factor 100.00 95.18 78.45 21.

Unit Capacity Factor (Using MDC Net) 91.53 94.26 72.79 j

22.

Unit Capacity Factor (Using DER Net)-

89.75 92.42 71.37 j

23.

Unit Forced Outage Rate 0.00

-2.60 5.60 24.

Shutdowns scheduled over next 6 months (Type, Date, and Duration of I

Each):

1990 Refueling Outage scheduled to begin on September 1, 1990 t

and conclude on October 15, 1990.

25.

If shut down at end of report period, estimated date of starttp: N/A 26.

Units In Test Status (prior to commercial operation): N/A Forecast Achieved INITIAL CRITICALITY INITIAL ELECTRICITY COMMERCIAL OPERATIO!1 VYDPF 0411.01 DP 0411 Rev. 3 Pag @ 1 of 1 RT No. 13.F01.19F I

AVERAGE DAILY UNIT POWER LEVEL DOCKET No. 50-271 UNIT Vermont Yankee DATE 900810 COMPLETED BY G.A.

Wallin TELEPHONE (802)257-7711 110 NTH July b

DAY AVERAGE DAILY POWER LEVEL-DAY AVERAGE DAILY POWER LEVEL s

(MWe-Net)

(MWe-Net) 1.

494 17, 467 2.

495 18, 463 3.

497 19.

464 4.

490 20.

460 5.

480 21.

454 6.

488 22, 364 7

366 23.

428 i

8.

425 24.

468 9.

477 25.

463 10.

484 26, 464 1

11, 484 27.

459 l

12.

481 28.

455 13.

478 29.

452 i.

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470 30.

453 15.

461 31.

452 l

16.

464 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 msgawatt.

VYDPP 0411.02 DP 0411 Rev. 3 PGge 1 of 1 RT No. 13.PO1.18V 1

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UNIT SHUTDOWNS AND POWER REDUCTIONS DOCKET NO 50-271 REPORT MONTH JULY UNIT NAME Vermont Yankee DATE 900510 COMPLETED ST G.A.

Wallan a

TELEPHONE (802)257-7711 1

2 Method of License System component cause and Correcti1c No.

Date-Type Duration Reason Shutting Down Event Code Code Action to (hours)

Reactor 3 Report $

4 5

trevent Recurrence 90-06 900707 5

0.00 B,H*

4 N/A RB CONROD Control rod exercising and weekly turbine surveillance followed by. a Power Rod Pattern exchange.

Reduction 90-07 900722 S

0.00 B,H*

4 N/A RB CONROD Contrr[ rod exercising, weekly turb'ut surveillance and a Rod ~

. Power Pattsrn adjustment.

Reduction 3 Method:

4 Exhibit G-Instructions 1 F: Forced 2 Reason:

Sc"eduled A-Equipment Failure (Explain) 1-Manual

'for Preparation of Data.

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2-Manual. Scram Entry Sheets for Licensee-n B-Maintenance or Test 3-Automatic' Scram Event Report.(LER) File C-Refueling 4-Other (Explain)

(NUREG 0161)

D-Regulatory Restriction E-Operator Training and License Examination 5 Exhibit I - Same Source F-Administrative VYDFF 0411.03 G-Operational Error ( E x p1"t i n )

DP 0411 Rev. 3

• H-(Explain) - Rod Pattern Exchange Page 1 of 1

- ' Rod Pattern Adjustment l'

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r DOCKET NO.J50i271:

UNIT'VermontHYankae R

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W DATEf900810 COMPLETED BY<G.A. Wallin TELEPHONE 1802)257-7711

. REPORT MONTH-July.

SUMMARY

OF OPERATING EXPERIENCES' Highlights Varmont Yankee. operated'at 93.8% of reced thermal-power for'the month.

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' Gross 1 electrical generation was 366,019 MWHe'or 91.1%Ldesign electrical-capacity..

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Oparating' Summary The,following is a chronologicalt description of-plant operations including-other-pertinent-items of interest for the. month:

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-At_the-beginning of the reporting period the plant was operating at 98.8%

of rated thermal power.

r 900707 At 0300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br />, initiated a power reduction to perform turbine surveillance and a. rod pattern exchange.-

(See Unit' Shutdowns and Power Reductions) 900707 At'0415 hours0.0048 days <br />0.115 hours <br />6.861772e-4 weeks <br />1.579075e-4 months <br />, started turbine surveillance and control rod-i exercising.

900707 At 0520 hours0.00602 days <br />0.144 hours <br />8.597884e-4 weeks <br />1.9786e-4 months <br />, completed turbine surveillance and control rod exercising.

900707 At 0608 hours0.00704 days <br />0.169 hours <br />0.00101 weeks <br />2.31344e-4 months <br />, initiated a rod pattern exchange.

F 900707 At 0752 hours0.0087 days <br />0.209 hours <br />0.00124 weeks <br />2.86136e-4 months <br />, completed the' rod pattern exchange and-began a return 4

toffull power.

900722 At_0030 hours, initiated a' power reduction to' perform turbine surveillance and a rod pattern-adjustment.

(See Unit Shutdowns and Power Reductions) 900722 At 0045 hours5.208333e-4 days <br />0.0125 hours <br />7.440476e-5 weeks <br />1.71225e-5 months <br />, started turbine surveillance and control red i

exercising.

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~900722 At 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />, completed turbine surveillance and control rod exercising.

-900722 At 0235. hours, initiated a-rod pattern adjustment.

900722 At 0500 hours0.00579 days <br />0.139 hours <br />8.267196e-4 weeks <br />1.9025e-4 months <br />, completed the rod pattern adjustment and began a return to full power.

At the end of the reporting period the plant was operating at 92.5% of rated-thermal power and coasting down to the end of cycle.

VYDPF 0411.04 DP,0411 Rev. 3 Page: 1 of 1 RT No. 13.F01.18X

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