ML20041B808

LER 82-010/03L-0:on 820122,during Surveillance Test,Valve 2-CO-420,W Component Cooling Water HX Discharge Would Not Close Remotely.Caused by Binding of Valve Shaft in Stuffing Box Bore Below Packing & in Area of Upper Shaft Bushing

ML20041B808
Person / Time
Site:	Cook
Issue date:	02/18/1982
From:	Piehl R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20041B788	List: ML20041B787 ML20041B794 ML20041B801 ML20041B808
References
LER-82-010-03L, LER-82-10-3L, NUDOCS 8202250220
Download: ML20041B808 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMIESION (7J7)

LICENSEE EVENT REPORT CONTROL BLOCX: l i

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) jo jij8 lM 7 9 lI l D lC lC l 2 l@l 0 l0 l- l 0 l0 l0 l0 l0 l- l0 l0 lgl 4 l 1 l 1 l 1l 1lgl 14 15 l lg LICEP.SEE CODE LICENSE NUM8ER 25 26 LICENSE TYPE JG 57 LATsa CC-N'T jojij

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61 68 GQCKET NLMSER 69 EVENT DATE 14 75 REPCRT CATE a0 EVENT DESCalPTION AND PROBABLE CONSEQUENCES to lol2l l VALVE 2-CMO-420, "W" CCW HEAT EXCHArbER DISCHARGE, WOULD NOT CLOSE REMOTELY l g o ,3 ; j DURING A SURVEILLANCE TEST. THE VALVE WAS DECLARED INOPERABLE, CONSTITUTING  ;

Io I4 l l AN INOPERABLE CCW TRAIN, CONTRARY TO T.S. 3.7.3.1. THE VALVE WAS REMOVED FROM l 10 i s ; l SERVICE TWO ADDITIONAL TIMES. ON ALL THREE OCCASSIONS THE "E" CCW TRAIN REMAINED l j o je l l OPERABLE, ACTION STATEMENTS WERE MET AND PUBLIC HEALTH AND SAFETY WERE NOT AFFECTED.  ;

lo l7l l SIMILAR OCCURRENCES - 050/315 77-035; 050/316 82-007. CSEE ATTACHMENT)  ;

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42 CAUSE DEScalPTION AND CORRECTIVE ACTIONS h Iilc1l THE VALVE SHAFT WAS BINDING IN THE STUFFING BOX BORE BELOW THE PACKING AND IN THE  ;

i li j l AREA 0F THE UPPER SHAFT BUSHING DUE TO A BUILDUP OF CORROSION PRODUCTS. THE  ;

,,,,, l VALVE, A 16" CENTERLINE 150p BUTTERFLY, MODEL PR-1508 (DWG. 4-8104C), WAS ,

gl REPLACED WITH A PRATT VALVE. NO FURTHER ACTION IS PLANNED.  ;

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NAVE OF PREPARER PHONE: 616- 65-5901 2

ATTACHMENT TO LER#82-010/03L-0 ITEM 10 DURING SURVEILLANCE TESTING, 2-CMO-420, "W" CCW HEAT EXCHANGER DISCHARGE, OPENED AS REQUIRED BUT WOULD NOT CLOSE FROM THE CONTROL ROOM. UPON INSPECTION, THE LIMITORQUE DRIVE SLEEVE WAS FOUND RUBBING ON THE HOUSING COVER. THE HOUSING COVER WAS MACHINED TO IMPROVE CLEARANCE AND REINSTALLED. THE VALVE TESTED SATISFACTORILY AND WAS RETURNED TO SERVICE.

ON FEBRUARY 3, 1982 THE VALVE AGAIN WOULD NOT CLOSE REMOTELY AND WAS REMOVED FROM SERVICE. THE DRIVE SLEEVE WAS AGAIN FOUND TO BE IN CONTACT WITH THE HOUSING COVER. THE COVER WAS ADJUSTED TO ALLOW CLEARANCE. THE VALVE TESTED SATISFACTORILY, WAS RETURNED TO SERVICE AND PREPARATIONS WERE BEGUN TO REPLACE THE VALVE.

CMO-420, A CENTERLINE VALVE, WAS REMOVED FROM SERVICE ON 2/05/82 AND REPLACED WITH A VALVE ?>ANUFACTURED BY PRATT. THE NEW VALVE TESTED SATISFACTORILY AND WAS PLACED IN SERVICE.

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