05000255/LER-1979-011, Forwards LER 79-011/03L-0

Forwards LER 79-011/03L-0

ML18043A579
Person / Time
Site:	Palisades
Issue date:	03/26/1979
From:	Hoffman D CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18043A580	List: 05000255/LER-1979-011, Forwards LER 79-011/03L-0 05000255/LER-1979-011-03, /03L-0 on 790227:primary Data Logger Was Inoperable.Caused by Multiplexer Failure at Computer Input/ Output.Faulty Relays Replaced
References
NUDOCS 7903290135
Download: ML18043A579 (4)

LER-1979-011, Forwards LER 79-011/03L-0

Event date:
Report date:
2551979011R00 - NRC Website

text

.j consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517.788-0550 March 26, 1979 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKEr 50-255 - LICENSE DPR PALISADES PLANT - LICENSEE EVENT REPORT 79-0ll On the reverse side is Licensee Event Report 79-0ll which is reportable* under Technical Specification 6.9.2.b.(2).

David P Hoffman (Signed)

David P Hoffman Assistant Nuclear Licensing Administrator CC:

Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement 1903290 /35

Palisades NRC FORM386

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I During normal pJant operation, 'the!<itP'i-ima.ry data

~ such that no_.iil1fucore ala.riilS coul~1K~t be printed 01411 was commenr~d as required by:..11$ 3.11.e *

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The crnnimter was restqred is an onerable logger became inoperable, out.

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within one hour of

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commehcing the power red¢ction.

No t~"e"at to public health or safety 790329 0 13 &'

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General Offices: :212 West Michigan Avenue, Jackson, Michigan 49:201

• Area Code 517 788-0550 March 26, 1979 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Re~~latory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 - LICENSE DPR PALISADES PLANT - LICENSEE EVENT REPORT 79-011 On the reverse side is Licensee Event Report 79-011 which is reportable under Technical Specification 6.9.2.0.(2).

David P Hoffman Assistant Nuclear Licensing Administrator CC:

Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement

Pali sad.es NRC FORM 366 (7-77)

U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: ~'~.i-.-'-~-'---'-~.1..-....JIC!)

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I During normal pla~t operation,"the primary data logger became inoperable, such that no incore alarms could not be printed out.

Power reduction was commenced as required by TS 3.11.e~

The con;p11ter was restored to an operable status within one hour of commencing the power reduction.

No threat to public health or safety ITTIJ existed.

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SYSTEM CODE I IIF I@

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LEA/RO CV ENT YEAR

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CAUSE

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~ ATTACHMENT NPRD-4 PRIME COMP COMPCNENT ON PLANT METHOD HOURS ~ SUBMITTED FORM SUB.

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ACTION FUTURE TAKEN ACTION CAUSE DESCRIPTION ANO CORREC"rtVE ACTIONS 27 47 I The condition was caused by multiplexer failure at the computer input/

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output; specifically, multiplexer r.elays had failed.

The relays were replaced, and the computer was restored to service.

No further action is contemplated at this time.

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