ML20206P208

Special Rept:On 981218,inoperability of Meteorological Monitoring Instrumentation Channels,Was Observed.Caused by Data Logger Overloading Circuit.Replaced & Repaired Temp Signal Processor

ML20206P208
Person / Time
Site:	Catawba
Issue date:	12/31/1998
From:	Gordon Peterson DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9901080234
Download: ML20206P208 (3)

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Duk3 Energy Corporatlin Catawba Nudear Station 4800 Concord Road York, SC 29745 Cary R. Peterson (803) 83M251 mm y;,, y;g,, (803) 831-3426 m December 31, 1998 U. S. Nuclear Regulatory Commission Attention: Document. Control Desk Washington, D.C. 20555-0001

SUBJECT:

Duke Energy Corporation Catawba Nuclear Station Units 1 and 2 Docket No. 50-413/414 Special Report Inoperability of Meteorological Monitoring Instrumentation Channels Pursuant to Selected Licensee Commitment (SLC) 16.7.3 and Technical Specification 6.9.2, with one or more required meteorological monitoring channels inoperable for more than

, seven days, a Special Report is required within the next ten days. In accordance with 10 CFR 50.4, this Special Report is being submitted to the Commission.

While performing the daily channel check on December 18, 1998, Operations personnel observed the meteorological system /

ambient temperature to be erratic, which caused the system to '

i be inoperable. Work request 9L-057596 was written to investigate and repair computer point C1P0118 (dry bulb

! temperature) on the meteorological panel.

Cn December 30, 1998, maintenance personnel removed and E L1

! replaced the temperature signal processor. It was then l determined that this random, intermittent failure occurred as a result of the data logger overloading the circuit. Repair

and replacement components have been requested for the data logger and will be available on December 31, 1998. When the repair or replacement is complete, the meteorological system should be restored to an operable status.

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9901080234 ADOCK981231 05000413 ,%

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4-U.S. Nuclear Regulatory Commission Decqmber?31, 1998 Page 2 There are no' regulatory commitments contained in this report.

Questions regarding this Special Report should be directed to Kay Nicholson, Catawba Regulatory Compliance, at (803) 831-3237.

Sincerely,

-Q h- m. I. 3 G.R. Peterson I n

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U.S. Nuclear Regulatory Commission' December *31,- 1998 Page 3 '

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-L. A. Reyes U .' S.-Nuclear Regulatory Commission i Regional' Administrator, Region II  !

Atlanta' Federal Center 61 Forsyth St., SW, Suite 23T85

~ Atlanta, Georgia P. S. Tam

'NRC Senior Project Manager (CNS) .

U. S. Nuclear' Regulatory Commission

~ Mail Stop O-14H25 Washington, D.C. 20555-0001

'D. J.' Roberts

-Senior Resident Inspector U.'S.-Nuclear Regulatory Commission Catawba Nuclear Site - CN0lNC v

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