05000315/LER-1982-095-03, /03L-0:on 821008,essential Svc Water Supply Valve to W Containment Spray HX 1-WMO-715 Found Closed Rendering HX Inoperable.Caused by Overlooking Valve Upon Final Restoration of Sys.Return to Svc Procedure Revised

/03L-0:on 821008,essential Svc Water Supply Valve to W Containment Spray HX 1-WMO-715 Found Closed Rendering HX Inoperable.Caused by Overlooking Valve Upon Final Restoration of Sys.Return to Svc Procedure Revised

ML20028A107
Person / Time
Site:	Cook
Issue date:	10/08/1982
From:	Draper D INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20028A094	List: 05000315/LER-1982-095, Forwards LER 82-095/03L-0 05000315/LER-1982-095-03, /03L-0:on 821008,essential Svc Water Supply Valve to W Containment Spray HX 1-WMO-715 Found Closed Rendering HX Inoperable.Caused by Overlooking Valve Upon Final Restoration of Sys.Return to Svc Procedure Revised
References
LER-82-095-03L, LER-82-95-3L, NUDOCS 8211160425
Download: ML20028A107 (2)

LER-1982-095, /03L-0:on 821008,essential Svc Water Supply Valve to W Containment Spray HX 1-WMO-715 Found Closed Rendering HX Inoperable.Caused by Overlooking Valve Upon Final Restoration of Sys.Return to Svc Procedure Revised

Event date:
Report date:
3151982095R03 - NRC Website

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t/RC Fi r.M 366 U. S. NUCLE AD CEGULATZRY COMMISS.ON ilin LICENSEE EVENT REPORT 1

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60 61 DOCKET NUM8ER FA 69 EVENT D ATE 74 75 REPORT C AT E 80 EVENT OESCRIPTION AND PROBABLE CONSEQUENCES h lDURING A ROUTINE POWER ASCENSION THE_ ESSENTIAL SERVICE WATEa (ESW) SUPPLY VALVE T01 o 2 o 3 ITHE W CONTAINMENT SPRAY (CTS) HEAT E CHANGER (HX) 1-WM0-715 WAS FOUND CLOSED l

iRENDERING THAT HX INOPERABLE WHICH WAS CONTRARY TO T.S. 3.6.2.1.

THE VALVE HAD 1

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o s i NOT BEEN RETURNCD TO ITS NORMAL OPEN POSITION AFTER IT WAS USED AS AN ISOLATION

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iPOINT ON A MAINTENANCE CLEARANCE WHICH HAD BEEN RELEASED 6 HRS. 15 MIN. EARLIER.

I o e o i lTHE REDUNDANT CTS HEAT EXCHANGER REMAINED OPERABLE. NO PROBABLE CONSEQUENCES RES-I

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1o181IULTED. THIS WAS THE FIRST OCCURRENCE OF THIS TYPE.

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CONSFOUFNTIY I i 7 l WM0-715 WAS OVERLOOKFD UPON FINAL RESTORATION OF THE SYSTEM. EQUIPMENT RFTURN TO l 3

L,i_L_J l SERVICE PROCEDURES HAVE BEEN REVISED IN AN EFFORT TO PREVENT RECURRANCE.

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'd SUPPLEMENT TO LER 82-095/03L-0 CA.USE DESCRIPTION AND CORRECTIVE ACTION (27)

THE UNIT FOREMAN WHO WAS RESPONSIBLE FOR FILLING OUT A FORM WHICH DETAILED HOW EQUIPMENT WAS TO BE RETURNED ERRORED IN SPECIFING THE POSITION OF THE VALVE. SHORTLY THERE AFTER A SECOND CLEARANCE WAS PLACED ON THE SYSTEM RENDERING IT IN0PERABLE. THE SCOPE OF THE ADDITIONAL WORK HOWEVER DID NOT REQUIRE THE SAME ISOLATION POINTS S0 THE SECOND CLEARANCE DID NOT LIST WM0-715 WHICH HAD BEEN LEFT CLOSED. CONTROL BOARD CHECKS DURING THE ENSUING TIME PERIOD DID NOT QUESTION THE MISSED POSITION WM0-715 AS THE SYSTEM WAS UNDER A CLEARANCE. UPON FINAL RESTORATION OF ALL THE EQUIPMENT THAT HAD BEEN TAKEN OUT OF SERVICE THE POSITION OF WM0-715 WAS OVERLOOKED.

A NRC RESIDENT INSPECTOR NOTICED THIS WHILE REVIEWING THE STATUS OF CONTROL BOARD STATUS LIGHTS. REQUIREMENTS HAVE BEEN IMPLEMENTED WHICH DO NOT ALLOW THE SAME INDIVIDUAL TO ORIGINATE THE EQUIPMENT RETURN TO SERVICE FORM AND REVIEW IT WHEN COMPLETE.

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