ML17318A575

Ro:On 791224-800107,meteorological Monitoring Instrumentation Was Recording Wind Direction w/180 Degree Error.Caused by Inadvertent Reversal of Transmitter Leads During Installation of Instrumentation on 791224

ML17318A575
Person / Time
Site:	Cook
Issue date:	01/17/1980
From:	Shaller D INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:
Shared Package
ML17318A576	List: ML17318A575 ML17318A581
References
NUDOCS 8001250478
Download: ML17318A575 (4)

Text

REGULATORY~MFORMATION DISTRIBUTION S EM (RIDS)

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DOCKET VAGAL:50 31S Donald C,

Cook Nuclear Power Plenty Unit ig Indiana 8

05000315 AOTH. NaME Au THoA AFFJLIATlute SAALLERiD,V.

Indjana 8 Hicliigan Electric Co<

RECP NAME REt;IPIENT AFFILIATION SUBJECT; RO:on 790107gimproper operation of meterological monitoring instrumentation from 791224 to 800107 was discoveied,Caused by transmitter leads inadvettently recersed'uring installations Disc'repancy corrected 800107

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merlcen lectrlc INDIANA& MICHIGANElECTRIC COMPANY DONALDC. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, michigan 49106 (616) 465-5901 January 17, 1980 Mr. J.G. Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 Operating License DPR-58 Docket No. 50-315

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Dear Mr. Keppler:

This report is submitted as required by Technical Specification 3.3.3.4, as the required Meteorological Monitoring Instrumentation was operating improperly from December 24, 1979, until January 7,

1980.

A Special Report was previously submitted on December 28, 1979, concern-ing the inoperability of the Meteorological Instrumentation while install-ing new equipment (copy attached).

The installation of the new equipment was completed on December 24, 1979.

On January 7,

1980, while experiencing 0

high winds, it was discovered that recorded wind direction was 180 from actual wind direction.

Investigation revealed that during the installation of the new Meteorolo-gical Monitoring Instrumentation, the transmitter leads were inadvertantly reversed.

This resulted in the 180 wind direction error.

The discrepancy 0

was corrected on January 7,

1980.

All wind directions were recorded between the dates of December 24,

1979, and January 7,

1980.

However, the wind 0

direction data for this period was recorded 180 from actual wind direction.

Sincerely,-,

D.V. Shaller Plant Manager

/bab cc:

J.E.

Dolan R.S. Hunter R.W. Jurgensen R.F. Kroeger R.W. Kilburn R.E.

Masse RO:III R.C. Callen MPSC G. Charnoff, Esq.

W. Lavallee EPRI G. Olson J.M. Hennigan PNSRC J.F. Stietzel E.L. Townley Dir., IE (20 copies)

Dir., MIPC (2 copies Directorate of Licen

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