ML17227A688

Special Rept:On 921208,channel 7 of Loose Parts Monitoring Sys Declared Out of Svc Due to Excessive Electrical Noise Received at Preamplifier for More than 30 Days.Complete Channel Calibr Performed.Channel 8 Still Available

ML17227A688
Person / Time
Site:	Saint Lucie
Issue date:	01/14/1993
From:	SAGER D A FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
L-93-013, L-93-13, NUDOCS 9301220230
Download: ML17227A688 (3)

Text

4ACCELERATED DOCUMENTDIS'1BUTION SYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9301220230 DOC.DATE:

93/01/14NOTARIZED:

NOFACIAL:50-389 St.LuciePlant,Unit2,FloridaPower&LightCo.AU'ZH.NAME AUTHORAFFILXATION SAGERiD.A.

FloridaPower&LightCo.RECIP.NAME RECIPIENT AFFILIATION.

DocumentControlBranch(Document

.ControlDesk)

SUBJECT:

Specialrept:on'21208,channel 7ofloosepartsmonitoring sysdeclaredoutofsvcduetoexcessive electrical noisereceivedatpreamplifier formorethan30days.Completechannelcalibrperformed.

Channel8stillavailable.

DISTRIBUTION CODE:ZE22DCOPIESRECEIVED:LTR tENCLC,SIZE:TITLE:50.73/50.9 LicenseeEventReport(LER),IncidentRpt,'-etc.

NOTES:DOCKET05000389RECIPIENT IDCODE/NAME'D2-2 LANORRISPJINTERNAL:

ACNWAEOD/DOAAEOD/ROAB/DSP NRR/DLPQ/LHFB10 NRR/DOEA/OEAB NRR/DST/SELB SD2RR/RDBg/SPLB8Dl EG~LE02'GN2FILE01EXTERNAL'G&GBRYCEPJ~HNRCPDRNSICPOOREPWCOPIESLTTRENCL111122112211,111111111221111RECXPIENT IDCODE/NAME PD2-2PDACRSAEOD/DSP/TPAB NRR/DET/EMEB 7ENRR/DLPQ/LPEB10 NRR/DREP/PRPB11 NRR/DST/SXCB8H3 NRR/DST/SRXB 8ERES/DSIR/EIB LSTLOBBYWARDNSICMURPHY,G.A NUDOCSFULLTXTCOPIESLTTRENCL112=2111.11~1221'1111'11111NOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPI-37(EXT.504-2065)

TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDONT,NEED!TOTALNUMBEROFCOPIESREQUIRED:

LTTR31ENCL'1 P.O.Box128,Ft.Pierce,FL34954-0128 FPLJanuary14,1993L-93;013U.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Re:St.LucieUnit2DocketNo.50-389SpecialReportDateofEvent:December8,1992LoosePartsMonitorChannelOutofServiceTheattachedSpecialReportisbeingsubmitted pursuanttotherequirements ofSt.LucieTechnical Specification 3.3.3.8.Thisreportprovidesnotification thataLoosePartsMonitoring channelhasbeenoutofserviceforgreaterthanthirtydaysanddescribes theplansforrestoring thechanneltoservice.Verytrulyyours,8'"FD.agerVicePresident St.LuciePlantDAS/JWH/kw Attachment cc:StewartD.Ebneter,RegionalAdministrator, USNRCRegionIISeniorResidentInspector, USNRC,St.LuciePlantDAS/PSL4844-93ZlP$O,"'301220230 930114PDRADOCK05000389SPDRanFPLGroupcompany~i>>

NRCSPECIALREPORT-OnDecember'8, 1992Channel7oftheSt.LucieUnit2LooseParts.Monitor(LPM)wasdeclaredoutofserviceduetoexcessive electrical noisebeingreceivedatthepreamplifier

.AsrequiredbyTechnical Specification (TS)3.3.3.8thisSpecialReportisbeingsubmitted tonotifytheNRCthatthechannelhasbeenoutofservicegreaterthan30days.Thecauseofthisfailurehasnotyetbeendetermined becausenotallareasofthesystemareaccessible duringpoweroperations.

Allaccessible areasofthesystemhavebeeninvestigated.

Effortsarecontinuing toidentifythesourceoftheelectrical noiseandthemechanism forinduction intotheLoosePartsMonitoring System.TheLPMsystemhadundergone acompletechannelcalibration perTS4.3.3.8.c

'during,the1992refueling outage.Atthenextavailable opportunity troubleshooting effortswillresumeontheareasofthesystemnotaccessible whileatpower.1Channel7and8oftheLoosePartsMonitorarelocatedonthe2BSteamGenerator, therefore Channel8isstillavailable foralaimfunctions onthe2Bsteamgenerator.