05000315/LER-1980-002-03, /03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced

/03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced

ML17326A531
Person / Time
Site:	Cook
Issue date:	02/22/1980
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17326A529	List: 05000315/LER-1980-001-03, /03L-0:on 800123,while Performing Airlock Seal Leak Rate Testing,Inner Airlock Declared Inoperable.Caused by Broken Adjustment Bolt.Bolt Will Be Replaced During Next Unit Refueling Outage 05000315/LER-1980-002-03, /03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced ML17326A528
References
LER-80-002-03L-01, LER-80-2-3L-1, NUDOCS 8002290438
Download: ML17326A531 (2)

LER-1980-002, /03L-0:on 800125,during Normal Operation,Loop 3 T-average & delta-T Indication Decreased & Determined Inoperable.Caused by Resistance Temp Detector Producing Erroneous Temp Readings.Detector Was Replaced

Event date:
Report date:
3151980002R03 - NRC Website

text

U. S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT, Qi (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 DETERMINED INOPERABLE ~

THIS DID NOT MEET THE OPERAB ILITY REQUI REMENTS OF TECHNICAL SPECIFICATION TABLE 3.3-1 ITEMS 7 AND 8, AND TABLE 3.3-3 ITEMS 1.F AND 4.D.

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LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T BZG 41111899 LiJQR 0

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0 Q9 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION'AND PROBABLE CONSEQUENCES Q10

~02 DURING NORMAL OPERATIONr LOOP 3 T AVERAGE AND DELTA T INDICATION WAS DECREASING AND APPROPR IATE BISTABLES WERE PLACED IN THE TRIP POS ITION AS REQUIRED BY THE APPLICABLE o

6 ACTION REQUIREMENT.

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'1 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDR PRIME COMP.

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0 QE 33 34 35 36 37 40 4'I 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 9

INVESTIGATION REVEALED THAT THE RTD WAS PRODUCING ERRONEOUS TEMPERATURE READINGS.

THE SPARE. RTD WAS CONNECTED IN PINCE OF THE BAD RTD.

AFTER THE INSTRUMENTA 2

LOOP WAS CALIBRATED FOR THE NEW RTD, THE APPLICABLE SURVEILLANCE TEST WAS RUN TO 3

VERIFY TRIP SETPO INTS AND THE SYSTEM WAS RETURNED TO S ERVICE ~

THE RTD THAT FAILED 4

WAS MANUFACTURED BY RESEMOUNT MODEL II176 KF.

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10 12 ACTIVITY CONTENT RELEASED OF RElEASE 6

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10 PERSONNEI. EXPOSURES NUMBER TYPE DESCRIPTION Q39 7 ~00 0

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 8

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FACILITY STATUS

% POWER OTHER STATUS QBO E

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0 68 69 PHONE

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