05000315/LER-1979-024-03, /03L-0 on 790326:indicated Position for Rod F-6 Exceeded Twelve Step Limit Imposed by Tech Specs, & Problem Recurred Four More Times in Two Days.Investigation in Progress & Suppl Rept Will Be Submitted

/03L-0 on 790326:indicated Position for Rod F-6 Exceeded Twelve Step Limit Imposed by Tech Specs, & Problem Recurred Four More Times in Two Days.Investigation in Progress & Suppl Rept Will Be Submitted

ML17317B139
Person / Time
Site:	Cook
Issue date:	04/24/1979
From:	Beilman T INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B132	List: 05000315/LER-1979-023-03, /03L-0 on 790326:portion of Circuitry for Rod K-10 Indication Was Shorted Rendering Channel Inoperable.Caused by Shorting Secondary Coil Voltage Terminals to Line Voltage Terminals at Rear of Indicator Panel.Measurement Revi 05000315/LER-1979-024-03, /03L-0 on 790326:indicated Position for Rod F-6 Exceeded Twelve Step Limit Imposed by Tech Specs, & Problem Recurred Four More Times in Two Days.Investigation in Progress & Suppl Rept Will Be Submitted ML17317B131
References
LER-79-024-03L, LER-79-24-3L, NUDOCS 7904300305
Download: ML17317B139 (2)

LER-1979-024, /03L-0 on 790326:indicated Position for Rod F-6 Exceeded Twelve Step Limit Imposed by Tech Specs, & Problem Recurred Four More Times in Two Days.Investigation in Progress & Suppl Rept Will Be Submitted

Event date:
Report date:
3151979024R03 - NRC Website

text

U. S. NUCLEAR REGULATORY COMMISSION NRC FORM 366 (7.77)

LICENSEE EVENT REPORT 3

~

CONTROL'LOCK:

QI (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 4

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9 QB DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10 0

2 WHILE IN MODE 1

'THE INDICATED POSITION OF ROD F 6 WAS DISCOVERED TO HAVE

~o3 EXCEEDED THE TWELVESTEP LIMIT IMPOSED BYT.S.3.1.3.2

~ DURING THE TWO 4

DAYS SUBSEQUENT TO THE FIRST OCCURRENCE, THE PROBLEM RECURRED FOUR ADDITIONAL TIMES.

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0 Q33 33 34 35 36, 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

THE INVESTIGATION IS CURRENTLY IN PROGRESS AND A SUPPLEMENTAL REPORT 1~1.

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DISCOVERY DESCRIPTION Q2 OBSERVATION I.OCATION OF RELEASE Q 44 7 '/O0 3 E7OEI7S 7

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