05000255/LER-1980-032-03, /03L-0:on 800826,primary Data Logger Ceased Performing Control Rod Scans & Secondary Data Logger Typer Became Stuck.Cause Unknown.Failure Corrected by Resetting

/03L-0:on 800826,primary Data Logger Ceased Performing Control Rod Scans & Secondary Data Logger Typer Became Stuck.Cause Unknown.Failure Corrected by Resetting

ML18045A644
Person / Time
Site:	Palisades
Issue date:	09/23/1980
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML18045A641	List: 05000255/LER-1980-031-01, /01T-0:on 800826,group 1 Control Rods Withdrew 121 Inches Which Resulted in Unplanned Reactivity Insertion. Caused by Loss of Both Primary & Secondary Data Loggers. Loggers Restored & Control Rods Reinserted 05000255/LER-1980-032-03, /03L-0:on 800826,primary Data Logger Ceased Performing Control Rod Scans & Secondary Data Logger Typer Became Stuck.Cause Unknown.Failure Corrected by Resetting ML18045A640
References
LER-80-032-03L, LER-80-32-3L, NUDOCS 8009260496
Download: ML18045A644 (1)

LER-1980-032, /03L-0:on 800826,primary Data Logger Ceased Performing Control Rod Scans & Secondary Data Logger Typer Became Stuck.Cause Unknown.Failure Corrected by Resetting

Event date:
Report date:
2551980032R03 - NRC Website

text

PALISADES PLANT NRC FORM366

{7-771 U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORJ CONTROL BLOCK: I I(!)

(PLEASE PRINT*OR TYPE ALL REQUIRED INFORMATION)

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60 61 DOCKET NUMBER 6B 69 EVENT DATE 74 75 REPORT DATE BO E.VENT DESCRIPTION AND PROBABLE CONSEQUENCE'S @)

lillJ I During hot shutdo'W!l, the primary data logger ceased* perf'orming rod scans

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As a result no rod rn:m [fill [ill]

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position indication was available.

Event reportable per TS 3.17.4 and 6.9.2.B2.

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43 44 47 resetting.

Secondary data logger typer became stuck, and was manually o:IIJ eed.

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