ML20147B286

/03L-0 on 780905:interlock on 650 Ft Level Containment Air Lock Failed to Function During Test, as Interlock Cable Was Too Loose to Operate Locking Mechanism. Tension Adjustment Was Added to Maintenance Prog

ML20147B286
Person / Time
Site:	Cook
Issue date:	09/29/1978
From:	Michael Brown INDIANA MICHIGAN POWER CO.
To:
Shared Package
ML20147B243	List: ML20147B236 ML20147B286 ML20147B301
References
LER-78-066-03L, LER-78-66-3L, NUDOCS 7810100064
Download: ML20147B286 (1)

Text

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• . - LICENSEE EVENT REPORT CONTROL BLOCK: l 1

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6 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) lo l i8 l 9l M ILICENSEE I I D CODE I C I C l 2 lgl150 l 01LICENSE - l 0NUMBERl 0 l 0 l 010 l-25 l 026; 0 lgl 4 lTYPg 1 lJO1 l 1 l Ig l 168l@l 67 CAT LICENSE 7 14 l

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7 8 60 61 DOCKET NUMB E R 68 69 EVENT DATE EVENT OESCRIPTION AND PROBABLE CONSEQUENCES h WHILE PASSING THROUGH THE 650' LEVEL CONTAINMENT AIRLOCK, THE INTERLOCK I Io i2l l THAT PREVENTS OPENING BOTH AIRLOCK DOORS WAS TESTED. THIS TEST DEMON- l Io Ia l l STRATED THE INTERLOCK DID NOT FUNCTION, THUS THE INTERLOCK WAS DECLARED l j o i,; l INOPERABLE PER TECHNICAL SPECIFICATION 4.6.1.3 E. BOTH AIRLOCK DOORS l go,3, ;

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[ 0 (6 l l WERE CLOSED /ND GUARDED. THIS EVENT DID NOT JEOPARDIZE PUBLIC HEALTH AND SAFETY. l l0 l7l l 1

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44 33 34 35 36 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS I

l1 lOl\ THE INTERLOCK CABLE WAS TOO LOOSE TO OPERATE THE LOCKING MECHANISM.

l Ii ii1 l TENSION WAS ADJUSTED AND INTERLOCK TESTED SATISFACTORILY. AIRLOCK l

,,,7, ) CABLE TENSION ADJUSTMENT IS BEING ADDED TO THE PREVENTIVE MAINTENANCE l

,j3; l PROGRAM WHICH SHOULD ELIMINATE OR REDUCE FAILURES.

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80 OTHER STA TUS SCOV RY Of SCOVERY DESCRIPTION 57 $ . PC'."i E A IiI5IlEl@ l0l9l0lgl M l l Algl OPERATOR OBSEPNATICN l ACTl'.a ?Y  ; TENT AVOVNT OF ACTivlTY LOCATION OF RELEASE RELE25hD OF "ELEASE l, i, m i zi @ Lz_j@l1I na I L NA 45 80 3 9 10 44 85 a SO'.'.E L f APC5ua E S

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