ML19269D569

LER 78-030/03L-0 on 780828:discovered Control Element Assembly Motion Inhibit Not Operable for Position Deviation. Caused by Bad K2 Relay on Relay Card.Relay Replaced & Motion Inhibit Returned to Svc

ML19269D569
Person / Time
Site:	Calvert Cliffs
Issue date:	09/26/1978
From:	Carroll J, Miernicki M BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19269D568	List: ML19269D567 ML19269D569
References
LER-78-030-03L, LER-78-30-3L, NUDOCS 7906040357
Download: ML19269D569 (1)

Text

NRC FORM 346 U.S. NUCLEAR REGULATORY COMMISSloN

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LICENSEE EVENT REPORT .

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CONTROL BLOCK: l 1

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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 7 o i 8 9 I M I UCENSEE o l c l CODEe I s l 21@l 14 15 n i n l _ l o UCENSE lo l oNUMBER lolol In i n25 l@lk 26 11 11 li ll l@l57 CAT LICENSE TYPE JO I

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CON'T 7

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0"J I L60 ]@l a l 5 l o 81 l o l o 131118 OOCKET NUMB ER 68 l@l 69 o 18 2181718 l@lo loREPORT EVENT DATE 74 75 1216 I7 lA80l@

DATE EVENT DESCRIPTION AND PRC8ABLE CONSEQUENCES h o 2 l During performance of CEA partial movement te=t4n 4+ v== A4ernw.w.d +ba l 7

o 2 l CEA motion inhibit (CMI) was not oper=ble h a 7n=4+4m, d ov4a + < ~-

o 4 IAll group 5 CEA's were immediately verified to be less than 5% inserted I o s I as required by T.S. 3.1.3.1. CMI was returned to service and I o 6 satisfSCtorily tested on 8/28/78 fo11oving CompletiCn of corrective l O 7 l action. LER 77-100 (U-1) describes a similar event. I o a l 80 7 8 9 SYSTEM CAUSE CAUSE COMP. VALVE CODE CCQE SUSCODE COMPONENT CODE SUSCOCE SUSCODE 7

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la latol@ U@ l cl@ I r I n i s I r l w I trJ@ W@ tz_J @

9 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPO97 REvlSION LER/RO EV ENT YE AR REPORT NO. CODE TYPE NO.

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[L_J I-1 Lo.J 21 22 23 24 26 27 28 29 30 31 32 K N AC ON ONP T ME HOURS S8 i FOR 8. SUPPLIE MANUFA . RER LA 3J l@l34Z I@ lzl@ b l@

35 36 10101 d o f 31 40 IN @

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42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 1 o II'he CEA motion inhibit failu*. van ane +n a kaa v9 . 1a7 en the *.lav ***d I y y for the 8 inch group deviation cortion of CMI. Th. r.lav vR, *.7 1 *r d I i 2 land CMI returned to service. No further corrective action is necessa-r l g lsince this is the first failure of this tvee. I i 4 1 I 7 8 9 80

$A  % POWER OTHER STATUS dis O Y DISCOVERY CESCRIPTICN i e1 Lgj @ lo I9 l6 l@ l NA l [3_j@lSurveillanc.Tn+ l

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• A!TiviTY CO'ETENT RELEASED OF RELEASE AMOUNT OF ACTivlTY LOCATION OF RELEASE i 6 I Na l 7 8 9 Iz I @ Lz to J@l NA 11 44 45 80 PERSONNEL EXPCSURES NUMBER YYPE DESCRIPTION *

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, ERSONNEL i~2uLS NuM8ER oESCRi, tic ~8 2259 a,06 7

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PU8uCITY NRC USE CNLY

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2 o ISSUED l NA l lll1IIIIIIIII~4 7 8 9 68 69 83 3 NAME OF PREPARER J.T. Carroll /M.J. Mier.icki oHCNE: 2 ~7