ML20202D372

Monthly Operating Rept for Jan 1998 for Davis-Besse Nuclear Power Station,Unit 1

ML20202D372
Person / Time
Site:	Davis Besse
Issue date:	01/31/1998
From:	Lash J, Matranga E CENTERIOR ENERGY
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
KB-98-0002, KB-98-2, NUDOCS 9802170065
Download: ML20202D372 (3)

Text

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N h aeR t2 Oak Harbci, Ohio 4344%9760 1

February 12,1998 l

KB 98-0002 l

l Document Control Desk '

U. S. Nuclear Regulatory Commission '

g- One White Flint North -

11555 Rockville Pike

J' Rockville, MD 20852-2738 Ladies and Gentlemen:

Monthly Operating Repcrt, January 1998 Davis-Besse Nuclear Power Station Unit i

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Enclosed is a copy ;.f the Monthly Operating Report for the Davis-Besse Nuclear Power Station for the

. month of January 1998, if you have any questions, please contact E. C. Matranga at (419) 321-8369.

Very truly yours, ames H. Lash Plant Manager Davis-Besse Nuclear Power Station ECM/ljk -

Enclosure cc: A. B. Beach NRC Region 111 Administrator y A.G Hansen G

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NRC Project Manager S. J. Campbell NRC Senior Resident Inspector Illl[lll[,Illi!!"";II['I"[if g' T

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4 OPERATING DATA REPORT DOCKET NO, 50-0346

- UNIT NAME Davis-Besse Unit 1 DATE Feb 3,1998 COMPLETED BY - Euaene C. Matranaa TELEPHONE 419-321 8369 8tEDORTiNG PERIOD January,1998 YEAR IQ MONTH DATE CUMULATIVE '

- 1 Design E!ectrol Rating (MWe-Net). 906 The nominal not elecutal output of

- the unit specified by the utility and 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 dunng the most restrictive seasonal conditions minus the normal

' station service loads.

3 Number of Hours the Reactor Was Critical. 744.0 744.0 115,176.2-

. 'ihe total number of hours during the gross hours of the reporting period that the reactor was critical.

4 Number of Hours the Generator Was On Line. 744.0 744.0 112,831,3 (Also called Service Hours). The total number of hours during the gross hours of the reporting period that the unit operated -

with breakers closed to th* 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 rsrlod.

S Unit Reserve Shutdown Hours. 0.0 0.0 5,532.0 T."e 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 operationc 6 Net Electricel Energy (MWH). 657,650 657,650 90,884,207 The g:oss electrical output of the unit measured at the output terminals of the turbine-generator minus the no. mal station service loads during the gross hours of the reportirig per'od, expressed i:s mega-watt hours. Negative quantities should not be used.

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UNIT SHUTDOWNS DOCKET NO._ 50-346 ,

UNIT NAM 6 I . s-Besse #1 DATE' ..,3.1998 COMPLETED BY .3. C. Matranga ,

REPORTING PERIOD: January.1998 TELEPHONE (410) 321-8369 ,

NO. DATE TYPE DURATION rEEASON (1) METHOD OF CAUSE/ CORRECTIVE ACTIONS F: FORCED (HOURS) SHUTTING -

S: SCHEDULED DOWN (2) COMMENTS _ _ _ _

No Unit silutdowns.

SUMMARY

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Reactor power was 'aai.~oined at approximately 100% full power for the majority of the month On January 4,1998, at 0002 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />, reactor power was reduced to approximately 92% to perform turbine control valve testing as we!I as quarter 1y control rod drive exercising. At the completion of ,

testing at 0251 hours0.00291 days <br />0.0697 hours <br />4.150132e-4 weeks <br />9.55055e-5 months <br />, power was inc. eased to 100%. On January 5,1998, at 1410 hours0.0163 days <br />0.392 hours <br />0.00233 weeks <br />5.36505e-4 months <br />, a plant shut down was initiated in response to I 2 Emergency Diesel Generators (EDGs) potentially anoperable with a Makeup Pamp inoperable. .he plant shutdown was terminated at 1445 hours0.0167 days <br />0.401 hours <br />0.00239 weeks <br />5.498225e-4 months <br /> at approximately S9% reactor power when the Makeup Pump operability was restored. At 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br />, power was restored to approximatery 100%.

Further reviews identified that the EDGs remained operable, and the plant shutdown was not required.

(1) Reasorr (2) Method:

/-Equipment Failure (Explain) 1-Manual B-Maintenance or Test 2-ManualTrip/ Scram C-Refueling 3-Automatic Trip / Scram D-Regulatory Restriction 4-Centinuation E-Operator Training & License Examin 5-Other (Explain)

F-Administrative G-Operational Error (Explain)

.l-Other (Explain) l___ _ ._

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