ML20197J344

Monthly Operating Rept for Nov 1998 for Davis-Besse Nuclear Power Station,Unit 1.With

ML20197J344
Person / Time
Site:	Davis Besse
Issue date:	11/30/1998
From:	Lash J, Matranga E CENTERIOR ENERGY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
CCN:-P-6-98-11, NUDOCS 9812150044
Download: ML20197J344 (3)

Text

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L ' h* . _ m Davis-Besse Nuclear Power Station y yy m r 5501 North State Route 2 m Oak Harbor, Ohio 43449-9760 December 11,1998 CCN: P-6-98-11 Document Control Desk U. S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738 Ladies and Gentlemen:

Monthly Operating Report, November 1998 Davis-Besse Nuclear Power Station Unit 1 Enclosed is a copy of the Monthly Operating Report for the Davis-Besse Nuclear Power Station for the month of November 1998.

If you have any questions, please contact E. C. Matranga at (419) 321-8369.

Very truly yours, m i/ l l

nes H. Lash Plant Manager Davis-Besse Nuclear Power Station i

ECM/ljk I Enclosure cc: J. L. Caldwell NRC Region til Acting Administrator A. G. Hansen NRC Project Manager

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I K. S. Zellers l Acting NRC Senior Resident Inspector l

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• t' OPERATING DATA REPORT DOCKET NO. 50-0346 UNIT NAME Davis-Besse Unit 1 DATE December 1.1998 COMPLETED BY E. C. Matranaa TELEPHONE 419-321 8369 REPORTING PERIOD November,1998 YEAR I IQ l MONTH DATE CUMULATIVE j l

1 Design Electrical Rating (MWe-Net). 906 The nominal net electrical output of

'he unit specified by the utility and i used for the purpose of plant design.

2 Maximum Dependable Capacity (MWe-Net). 873 The gross electrical output as measured at the output terminals of the turbine-generator during the most restrictive l

, seasonal conditions minus the normal station service loads.

3 Number of Hours the Reactor Was Critical. 720.0 6,547.7 120,979.9 The total number of hours during the gross hours of the reporting period that the reactor was critical. l 4 Number of Hours the Generator Was On Line. 720.0 6,439.9 118,527.7 (Also called Service Hours). The total number of hours dua #) gross hogrp of the reporting perios : , d.e unit opi ut ed with breakers closed'to the station bus.

The sum of the hours the generator was on line plus the total outage hours should equal the gross hours in the reporting period.

5 Unit Reserve Shutdown Hours. 0.0 0.0 5,532.0 The total number of hours during the gross hours of the reporting period that the unit was removed from service for economic or similar reasons but was available for operation.

6 Not Electrical Energy (MWH). 633,444 5,468,873 95,695,430

, The gross electrical output of the unit measured at the output terminals of the turbine-generator minus the normal station l service loads during the gross hours of

[- the reporting period, expressed in mega-l watt hours. Negative quantities should not be used.

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UNIT SHUTDOWNS **

. %i DOCKET NO. 50-346 g UNIT NAME Davis-Besse #1 DATE December 1.1998

- COMPLETED BY E. C. Matranga REPORTING PERIOD: November.1998 TELEPHONE (419) 321-8369 NO. DATE TYPE DURATION REASON (1) METHOD OF CAUSE/ CORRECTIVE ACTIONS F: FORCED (HOURS) SHUTTING S: SCHEDULED DOWN (2) COMMENTS No Unit Shutdowns

SUMMARY

Reactor power was maintained at approximately 100% full power for the majority of the month. On Novernber 11,1998, at 0225 hours0.0026 days <br />0.0625 hours <br />3.720238e-4 weeks <br />8.56125e-5 months <br />, a downpower was commenced as a conservative action based on low lake levels and sitt build up in the intake canal. No Technical Specification Action Statement was entered. Reactor power was maintained at approximately 37% full power from 0523 hours0.00605 days <br />0.145 hours <br />8.647487e-4 weeks <br />1.990015e-4 months <br /> to 1203 hours0.0139 days <br />0.334 hours <br />0.00199 weeks <br />4.577415e-4 months <br />. Following lake levels retuming to to more normal conditions, reactor power was increased and 100% power was acheived at 1800 hours0.0208 days <br />0.5 hours <br />0.00298 weeks <br />6.849e-4 months <br />. On November 15,1998, at 0304 hours0.00352 days <br />0.0844 hours <br />5.026455e-4 weeks <br />1.15672e-4 months <br />, reactor power was reduced to approximately 95% to perform turbine valve testing. At the completion of testing at 0417 hours0.00483 days <br />0.116 hours <br />6.894841e-4 weeks <br />1.586685e-4 months <br />, power was increased to 100%, which was attained at 0443 hours0.00513 days <br />0.123 hours <br />7.324735e-4 weeks <br />1.685615e-4 months <br />.

(1) Reason: (2) Method:

A-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-Manual Trip / Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Continuation E-OperatorTraining & Ucense Examin 5-Other (Explain) .

F-Administrative G-Operational Error (Explain)

H-Other (Explain)

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