05000316/LER-1978-022-03, /03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect

/03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect

ML17317A899
Person / Time
Site:	Cook
Issue date:	01/19/1979
From:	Rischling J INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317A898	List: 05000316/LER-1978-022, Forwards LER 78-022/03X-1, 78-031/03X-1 & 78-076/03X-1 05000316/LER-1978-022-03, /03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect 05000316/LER-1978-031-03, /03X-1 on 780507:during Normal Operation Between 780507 & 780519 RPI Did Not Meet +/- 12 Step Limit of Tech Specs 22 Times.Caused by Recessed Pins in Connector 05000316/LER-1978-076-03, /03X-1 on 780929:during Normal Operation, Surveillance Test on Train B of Solid State Protection Sys Showed Several Switch Positions Were Bad.Cause Was Bad Universal Logic Card (Westinghouse Part 6056D21G01)
References
LER-78-022-03X, LER-78-22-3X, NUDOCS 7901260168
Download: ML17317A899 (4)

LER-1978-022, /03X-1 on 780407:during Normal Operation,Position Indication for Rods D-12 & H-8 Exceeded +/- 12 Step Limit of Tech Specs.Outputs of Amplifiers That Feed Control Board Indicators Found to Be Incorrect

Event date:
Report date:
3161978022R03 - NRC Website

text

NRC FORM 366 U. S. NUCLEAR REGULATORYCOMMISSION

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8 SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO DURING NORMAL OPERATION ROD POSITION INDICATION RP I FOR RODS D 12 AND H 8

~03 EXCEEDED THE + 12 STEP LIMIT OF T.S. 3.1.3.2.

ON ELEVEN OTHER OCCASSIONS D-12 RPI WAS FOUND TO BE. IN. EXCESS OF THE T.S. LIMIT.

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THE OUTPUTS OF THE AMPLIFIERS THAT FEED THE CONTROL BOARD INDICATORS WAS FOUND TO BE INCORRECT.

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4 INDICATION WAS RESTORED.

THE OTHER NUMEROUS EVENTS OCCURRING TO D-12 WAS THE RESULT OF HAVING A RECORDER CONNECTED TO THE (

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10 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ Q33 Z

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LICENSEE EVENT REPORT 878-022/03X-I SUPPLEMENT TO CAUSE DESCRIPTION OUTPUT OF THE RPI CABINET (MONITORING 0-12).

THIS RECORDER WAS CONNECTED IN PREPARATION FOR THE NEGATIVE RATE TRIP ASSOCI'ATED,.WITH.THE POWER ASCENSION

PROGRAM, SINCE THIS RECORDER WAS DISCONNECTED ON APRIL 19, 1978 NO FURTHER'ROBLEMS HAVE BEEN ENCOUNTERED WITH RPI FOR ROD D-12.

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