05000316/LER-1981-019-01, Plug Found Missing from Tee in Sensing Line to Upper Containment Pressure Transmitters PPA-310 & 311.Caused by Personnel Neglect in Replacing Plug Following Removal During Testing

Plug Found Missing from Tee in Sensing Line to Upper Containment Pressure Transmitters PPA-310 & 311.Caused by Personnel Neglect in Replacing Plug Following Removal During Testing

ML20009D711
Person / Time
Site:	Cook
Issue date:	07/15/1981
From:	Rischling J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009D704	List: 05000316/LER-1981-019, Forwards Updated LER 81-019/01X-1 05000316/LER-1981-019-01, Plug Found Missing from Tee in Sensing Line to Upper Containment Pressure Transmitters PPA-310 & 311.Caused by Personnel Neglect in Replacing Plug Following Removal During Testing
References
LER-81-019-01X, LER-81-19-1X, NUDOCS 8107240287
Download: ML20009D711 (2)

LER-1981-019, Plug Found Missing from Tee in Sensing Line to Upper Containment Pressure Transmitters PPA-310 & 311.Caused by Personnel Neglect in Replacing Plug Following Removal During Testing

Event date:
Report date:
3161981019R01 - NRC Website

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$0 EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES O'o I o i 21 l AFTER ENTERING MODE 3 FOLLOWING A REFUELING OUTAGE, IT WAS DISCOVERED THAT A PLUG WAS l

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I lt i, ii i l REMOVED DURING THE TYPE A INTEGRATED LEAKRATE TEST. DURING THE INSTRUMENT SETUP FOR I

i,,,,lTHIS TEST, A ROTAMETER WAS INADVERTANTLY INSTALLED AT THE TEE. THIS ROTAMETER WAS I

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ii i4; ; NEGLECTED TO REPLACE THE PLUG IN THE TEE. THIS WAS NOT NOTICED (SEE ATTACHED SUPPLEMENT)

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I ATTACHMENT TO LER # 81-019/01X-1 SUPPLEMENT TO CAUSE DESCRIPTION DURING THE Tf 3T SINCE AN ISOLATION VALVE UPSTREAM 0F THE TEE WAS SHUT.

TO PREVENT REOCCURRENCE OF THIS TYPE OF INCIDENT, THE FOLLONING CORRECTIVE ACTIGJS HAVE BEEN TAKEN.

ALL INTEGRATED LEAK RATE PRESSURE POINTS HAVE BEEN IDENTIFIED WITH METAL TAGS AND THE PROCEDURE MODIFIED INSURING THAT PERSONNEL INSTALL THE TEST INSTRUMENTATION ONLY AT THE DESIGNATED TEST POINTS.

IN ADDITION, THE PROCEDURE RESTORATION STEP HAS BEEN MODIFIED TO INSURE THAT THESE TEST POINTS HAVE BEEN ISOLATED AND THE TEST CONNECTIONS CAPPED.

IN ADDITION TO THE AB0VE CORRECTIVE ACTIONS TAKEN, THE FOLLOWING WILL BE IMPLEMENTED BY JULY 31, 1981.

PROCEDURES WILL BE PREPARED TO CHECK ALL INSTRUMENT AND SAMPLING LINES TO INSURE THAT VALVES AFFECTING CONTAINMENT ISOLATION ARE POSITIONED CORRECTLY PRIOR TO PLANT STARTUP FROM COLD SHUTDOWN. THIS VALVING CHECK WAS COMPLETED FOR UNIT 2 ON JULY 9, 1981, PRIOR TO ENTERING MODE 4.

A PriOCEDURE WILL BE PREPARED FOR THE DOUBLE VERIFICATION OF ALL SAFETY-RELATED INSTRU-fiENTATION VALVING TO INSURE CORRECT INSTRUMENT VALVE POSITIONS UPON THE COMPLETION OF INSTRUMENT REPAIRS AND CALIBRATION.

IN ADDITION, THIS DOUBLE VERIFICATION FOR VALVE POSITION WILL BE INCORPORATED IN ALL APPLICABLE SURVEILLANCE AND INSTRUMENT MAINTENANCE PROCEDURES.

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