ML20039C854

LER 81-057/03L-0:on 811123,bypass Valves Found in Open Position During Normal Operation While Performing Check of Valve Lineup for 1R-11/12 Containment Radiation Monitor Sys. Cause Not Determined.Caution Tag Placed on Valves

ML20039C854
Person / Time
Site:	Cook
Issue date:	12/23/1981
From:	Palmer R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20039C853	List: ML20039C852 ML20039C854
References
LER-81-057-03L-01, LER-81-57-3L-1, NUDOCS 8112310008
Download: ML20039C854 (1)

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EVENT DESCRIPTION AND PROB ABLE CONSEQUENCES h 10 l 21 l DURING NORMAL OPERATION, A CHECK OF THE VALVE LINE-UP FOR 1R-ll/12 CONTAINMENT RADIA- 1 iO i3i l TION MONITOR SYSTEM WAS PERFORMED. AT THIS TIME IT WAS NOTED THAT THE BYPASS l VAL IO pllWERE IN THE OPEN POSITION, THE BYPASS VALVES WERE IMMEDIATELY RETURNED TO THE CLOSED l 1Ol5l l POSITION. THIS CONDITION WAS NONCONSERVATIVE WITH RESPECT TO TECHNICAL SPECIFICATIONS l 10 ls l l3.3.3.1 AND 3.4.6.1. THIS WAS THE FIRST OCCURRENCE OF THIS TYPE. l 10 l 7 l l l I

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS lilOi IALL PERSONNEL WHO HAD BEEN INVOLVED WITH ANY RECENT MAINTENANCE PERFORMED ON 1R-ll/12 I t i ii i l WERE QUESTIONED AS TO THE VALVE LINE-UP, NOTHING COULD BE DETERMINED AS TO WHY THE I i,i2i iVALVES WERE OPEN. TO PREVENT A SIMILAR OCCURRENCE, A CAUTION TAG HAS BEEN PLACED ON l

[ i l 3 l l THE BYPASS VALVES. THIS CAUTION TAG WILL BE UTILIZED UNTIL DESIGN CHANGE RFC 12-2448 l m iIS COMPLETED. THE NEW SYSTEM BEING INSTALLED BY THE RFC DOES NOT HAVE BYPASS VALVES. l ST S  % POWE R OTHER STATUS Dis O RV DISCOVERY DESCRIPTION Ii l5 l l E l@ l 1101 Ol@l NA l [_Aj@l VALVE LINE-UP CHECK l ACTIVITY CO TENT RELE ASED OF RELE A. AMOUNT JF ACTIVITY LOCATION OF RELE ASE L' Lc_1 LZ_1 @ t_Z_Jg"El NA l l NA l 7 8 9 10 11 44 45 80

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