05000316/LER-1979-043-03, /03X-1:on 791102,during Surveillance Insp,Ice Condenser Divider Barrier Seal Found to Have Cracks in Rubber.Caused by Excessive Compression During Installation. Seal Ring Replaced in Manner Limiting Compression

/03X-1:on 791102,during Surveillance Insp,Ice Condenser Divider Barrier Seal Found to Have Cracks in Rubber.Caused by Excessive Compression During Installation. Seal Ring Replaced in Manner Limiting Compression

ML17326A430
Person / Time
Site:	Cook
Issue date:	12/21/1979
From:	Wizner D INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17318A523	List: 05000316/LER-1979-043, Forwards LER 79-043/03X-1 05000316/LER-1979-043-03, /03X-1:on 791102,during Surveillance Insp,Ice Condenser Divider Barrier Seal Found to Have Cracks in Rubber.Caused by Excessive Compression During Installation. Seal Ring Replaced in Manner Limiting Compression
References
LER-79-043-03X, LER-79-43-3X, NUDOCS 7912310350
Download: ML17326A430 (2)

LER-1979-043, /03X-1:on 791102,during Surveillance Insp,Ice Condenser Divider Barrier Seal Found to Have Cracks in Rubber.Caused by Excessive Compression During Installation. Seal Ring Replaced in Manner Limiting Compression

Event date:
Report date:
3161979043R03 - NRC Website

text

NRC FORM 366 EPORT PREVIOUS REPORT DATE 12/03/7g. S. NUCLEAR REGULATORY COMMISSION (7.77 I ENSEE EVENT REPORT CONTROL BLOCK:

QI IPLEASE PRINT OR TYPE ALLREQUIRED INFORMATION)

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

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QB DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE EVENT DESCRIPTION AND PROBABL.E CONSEQUENCES Q10 DURING SURVEILLANCE INSPECTION PER T.S. 4.6.5.9p THE ICE CONDENSER DIVIDER

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~06 BARRIER SEAL WAS FOUND TO HAVE CRACKS IN THE RUBBER.

IN SOME AREAS, THE CRACKS DID PENETRATE THE SEAL.

HOWEVER THE MAJOR PORTION OF THE SEAL INTEGRITY REMAINED INTACT.

THE EVENT DID NOT JEOPARDIZE PUBLIC HEALTH AND SAFETY.

A SIMILAR EVENT WAS REPORTED AS RO 79-'029/03L-0 DOCKET NO. 050315.

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SYSTEM

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COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRP EVENT YEAR REPORT NO.

CODE TYPE NO.

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

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

THE CRACKING OF THE SEAL MATERIAL WAS DUE TO EXCESSIVE COMPRESSION OF THE MATERIAL DURING INSTALLATION.

REINSTALLATION OF THE SEAL RING WAS 3

PERFORMED IN A MANNER WHICH LIMITED THE COMPRESSION OF,THE MATERIAL DURING 4

THE BOLTING PROCEDURE.

4 80 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITY 6

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10 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q3

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQI 5 ~00 0

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11 12 LOSS OF OR DAMAGE,TOFACILITYQ43 TYPE

DESCRIPTION

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10 PUBLICITY ISSUED

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8 9 '0 LOCATIONOF RELEASE Q 45 80 80 80 p/z3(o 3Rd NRC USE ONLY 80 2

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398 DAVID G.

WIZNER NAME OF PREPARER 7

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DISCOVERY DISCOVERY 0[SCRIPTION Q32 5

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