ML20009C682

LER 81-018/03L-0:on 810609,source Range Detector Experienced Loss of Voltage When Crid 2 Was Switched from Alternative to Normal Supply.Caused by Momentary Loss of Ac to Drawer. Fuses Removed & Reinstalled

ML20009C682
Person / Time
Site:	Cook
Issue date:	07/07/1981
From:	Palmer R INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20009C675	List: ML20009C674 ML20009C682 ML20009C686
References
LER-81-018-03L-01, LER-81-18-3L-1, NUDOCS 8107210354
Download: ML20009C682 (2)

Text

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LICENSEE EVENT REPORT COMTROL BLOCCh l 1

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lh (PLEASE PRINT OR TYPE ALL REQUISED INFORMATION) lOlillnlilolclcl 7 8 9 3 l@l 0 l01010 l010 l 0101010 l 0 l@l LICENSEE CODE 14 15_ LICENSE NUMBER 25 26 l l l LICENSE TYPE 40 l l@l57 CAT l

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! R 11 l@l 0171REPORT EVENT DATE 74 75 Ol 718DATE l 180l@

EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h Io Ial I WHILE IN M0DE 6, SOURCE RANGE DETECTOR (N-32) EXPERIENCED A LOSS OF DETECTOR VOLTAGF l i o ,3 , l WHEN CRID #2 WAS SWITCHED FROM THE ALTERNATE SUPPLY TO THE NORMAL SUPPLY. THIS l

o ,4 i l IS NON-CONSERVATIVE IN RESPECT TO TECHNICAL SPECIFICATION 3.9.2. I loisil l 10181 l l 10171l l I o la i I I

• COI[E ##"o'E C0 SL8COoE COMPON ENT CODE SUSC DE SU E lOl9l l I l D l@ [X_j@ l Z l@ ll IN lS lT lR lU l@ (,jLj@ [Z_j @ 20 7 8 9 10 11 12 13 is is i,EQUENTI AL OCCURRENCE REPORT REVISION LE R/RO EVENT YEAR REPORT NO. CODE TYPE N O.

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31 10 l 32 24 27 28 K N AC 0 0 P NT ME HOURS 22 S8 FOR B. SUPPLIE MANUFACTURER IX[g[34_

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33 3 36 37 40 41 42 43 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l3 i o ; j THE APPARENT CAUSE OF THE INCIDENT IS DUE TO M0MENTARY LOSS OF ALL AC TO THE DRAWER l

,,,,, , CAUSING LOSS OF HIGH V0LTAGE. THIS IS INHERENT TO WESTINGHOUSE SOURCE RANGE HIGH I

,,,,,; VOLTAGE SUPPLY CUTOUT CIRCUITS. THIS LOSS WAS DUE TO THE SWITCHING 0F CRID #2 FROM i

,,,;THE ALTERNATE TO NORf1AL SOURCE, WHICH SUPPLIES AC POWER TO THE DRAWER. THE DRAWER l l ,,, , FUSES WERE REf10VED AND REINSTALLED WHICH RE-ESTABLI5HED THE (SEE ATTACHED SUPPLEMENT)  ;

!i~ 8 9 80 l

'STNS  % POWER OTHER STATUS 1 O RY DISCOVERY OESCRIPTION jl1 15 I l H l@ [0 l0 l 0 l@l NA i l Bl@l OPERATOR OBSERVATION l ACTIVITY CO TENT RELEASE AMOUNT OF AC11VITY LOCATION OF RELEASE l i I *s l l Z l @D OF RELEASE lZ l@l NA l l NA l PERSONNEL EXPOS ES NUM8ER TYPE DESCRIPTION

' 11171 ] 0 l 0 l 0 l@l Z l@l NA l PERSONN E L INJU IES NUM8ER DESCRIPTION NA li l a 8l l9 0 l 0 l 0 l@l12 7 11 80 l

TYPE DESCR PT ON

I i l 9 l l 2 lh[ NA l 7 8 9 TO 80 PUBLICITY 8107210354 810707 NRC USE ONLY

• ISSUED DE SCRIPTION PDR ADOCK 03000315 .

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. ATTACHMENT TO LER #81-018/03L-0 SUPPLEhENT TO CAUSE DESCRIPTION HIGH V0LTAGE AND THE SYSTEM WAS RETURNED TO SERVICE.