05000316/LER-1980-025-03, /03L-0:on 800603,during Normal Operations, Engineered Safety Feature Vent Fan HV-AES-1 Circuit Breaker Tripped Rendering Ventilation Sys Inoperable.Caused by Failure of Wiring Insulation in Connection Boxes

/03L-0:on 800603,during Normal Operations, Engineered Safety Feature Vent Fan HV-AES-1 Circuit Breaker Tripped Rendering Ventilation Sys Inoperable.Caused by Failure of Wiring Insulation in Connection Boxes

ML17331A200
Person / Time
Site:	Cook
Issue date:	07/02/1980
From:	Michael Brown INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17331A199	List: 05000316/LER-1980-025, Forwards LER 80-025/03L-0 05000316/LER-1980-025-03, /03L-0:on 800603,during Normal Operations, Engineered Safety Feature Vent Fan HV-AES-1 Circuit Breaker Tripped Rendering Ventilation Sys Inoperable.Caused by Failure of Wiring Insulation in Connection Boxes
References
LER-80-025-03L, LER-80-25-3L, NUDOCS 8007090292
Download: ML17331A200 (2)

LER-1980-025, /03L-0:on 800603,during Normal Operations, Engineered Safety Feature Vent Fan HV-AES-1 Circuit Breaker Tripped Rendering Ventilation Sys Inoperable.Caused by Failure of Wiring Insulation in Connection Boxes

Event date:
Report date:
3161980025R03 - NRC Website

text

U. S. NUCLEAR REGULATORYCOMMISSION Q3 4>>>> Q4~

QE 25 26 LICENSE TYPE 30 57 CAT 58 NRC FORM 366 (7.77)

LICENSEE EVENT REPORT CONTROL BLOCK:

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LICENSEE CODE 14 15 LICENSE NUMBER CON'T

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0 Q9 SOURCE 60 61 DOCKET NUMBER 68 69 EVENT DATE

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/5 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES O10 DURING NORMAL OPERAT IONS ESF VENT FAN HV AES 1

C IRCUIT BREAKER TRIPPED DUE TO A SHORT CIRCUIT IN THE MOTOR CONNECTION BOX, Tl&T CONSTITUTED AN INOPERABLE VENTILATION SYSTEM PER T.S. 3.7.6.1.

ACTION REQUIREMENTS WERE MET AND THE SYSTEM RETURNED TO SERVICE 6/05/80 FOLLOWING MOTOR

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~O7 REPLACEMENT.

ON 6/14/80I SIMILAR FAILURE OCCURRED ON HV-AES-2.

AGAIN THE ACTION REQUIREMENTS WERE MET.

THE MOTOR AND POWER CABLE WERE REPLACED.

PUBLIC HEALTH AND SAFETY WERE NOT AFFECTED.

FLRST'CGURRENGE.

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80 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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,20 SEQUENTIAL OCCURRENCE REPORT REVISION LFRIRO EVENT YEAR REPORT NO.

CODE TYPE NO.

Q17 REPQRT

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~0 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDX PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER QIB ~zQ19

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5 Q26 33 34 35 36 3I 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS Q27 o

THE CAUSE OF THE EVENT WAS APPARENTLY FAILURE OF THE INSULATION ON THE WIRING IN THE CONNECTION BOXES.

BOTH MOTORS WERE REPLACED AND TFK SUPPLY CABLE TO HV-AES-2 WAS REPLACED.

THE DANGED PORTION OF THE HV-AES-1 SUPPLY CABLE WAS REMOVED AND THE REMAINING CABLE TERMINATED TO THE NEW MOTOR.

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FACILITY STATUS 1IlPOWER OTHER STATUS Q 8

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10 12 13 44 ACTIVITY CONTENT RELEASED OF RElEASE AMOUNTOF ACTIVITYQ z Q~ZS N/A 7

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION Q41

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11 12 LOSS OF OR DAMAGE,TOFACILITY 43 TYPE

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10 PUBLICITY ISSUED DESCRIPTIONQ I

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~AQ31 OPERATOR OBSERVATION 45 46 80 80 I.OCATION OF RELEASE Q N/A 80 45 80 80 goo 7d goZ1 80 NRC USE ONLY 68 69, 80 o

(616) 465-5901, EXT. 1398 L

M. S.

BROWN NAME OF PREPARER THE HV-AES MOTOR TERMINATIONS IN UNIT 1 WERE INSPECTED AND REINSULATED.

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