ML17219A666

Special Rept:On 870528,city Water Tank 1B Declared Inoperable for More than 7 Days in Violation of Tech Specs to Perform Necessary Maint.Caused by Necessary Repairs to Protective Coating Sys to Prevent Further Corrosion

ML17219A666
Person / Time
Site:	Saint Lucie
Issue date:	07/01/1987
From:	WOODY C O FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
L-87-278, NUDOCS 8707060691
Download: ML17219A666 (3)

Text

REGUL*TO>INFORMATIONDISTRIBUTlON>STEM(RIDS3ACCESSIONNBR:8707060691DOC.DATE:87/07/01NOTARIZED:NOFACIL:50-335St.LuciePlant>Unit1>FloridaPoeer8cLightCo.50-389St.LuciePlant.Unit2>FloridaPoeerZcLightCo.AUTH.NAMEAUTHORAFFILIATIONNOODY>C~O.FloridaPoojerZcLightCo.RECIP.NAMERECIPIENTAFFILIATIONDocumentControlBranch(DocumentControlDesk)DOCKET0500033505000389

SUBJECT:

Specialrept:on870528>citeatertank1Bdeclaredinoperableformorethat7dayslimitedalloUjedbyTechSpecstopreformnecessarymaint.CausedbysandblastingoWtankinnershellZcevaluatedcorrosionpitting.DISTRIBUTIONCODE:IE2ZDCQPIESRECEIVED:LTR(ENCLQSIZE:TITLE:50.73LicenseeEventReport(LER>>IncidentRpt>etc.NOTFS:RECIPIENTIDCODE/NAMEPD2-2LATOURIGNY>E1NTERNAL:ACRSMICHElSONAEQD/DOAAEOD/DSP/TPABNRR/DEST/ADENRR/DEST/CEBNRR/DEST/ICSBNRR/DEST/MTBNRR/DEBT/RSBNRR/DLPG/HFBNRR/DOEA/EABNRR/DREP/RPBNRR/PMAS/PTSBRESDEPYGIRES/DE/EIBCOPIESLTTRENCL111111101111111112211111RECIPIENTIDCODE/NAMEPD2-2PD'CRSMOELLERAEOD/DSP/ROABDEDRONRR/DEST/ADSNRR/DEST/ELBNRR/DEST/MEBNRR/DEST/PSBNRR/DEST/SGBNRR/DLPG/GABNRR/DREP/RABNRARMALRBREGF02RE>JRGN2FILE01COPIESLTTRENCL11222211101111111111111EXTERNAL:EGe<rGROH.MLPDRNSICHARRIS>J5511HSTLOBBYNARDNRCPDRNSICNAYS>G111TOTALNUMBEROFCOPIESREQUIRED:LTTR44ENCL42\+55%-e>55~')55)555)'5'~')~))85-=*-~

cJJP,<14000,JUNOBEACH,FL334IOBFLORIDAPOWER8LIGHTCOMPANYgod)l98tL-87-278IOCFR50.4U.S.NuclearRegulatoryCommissionAttn:DocumentControlDesk'ashington,D.C.2055SGentlemen:Re:St.LucieUnitsIand2DocketNos.50-335and50-389SpecialReportDateofEvent:May28,l987IBCitWaterStoraeTankTheattachedSpecialReportisbeingtransmittedpursuanttotherequirementsofTechnicalSpecifications3.7.II.Iand6.9.2.ThereportprovidesnotificationthattheIBCity.WaterStoragetankwasoutofserviceforgreaterthanseven(7)daysandtheactionstakentorestorethetanktoservice.Shouldthere.beanyquestionsonthisinformation,pleasecontactus.Verytrulyyours,C.O.WooGroupVicePresidentNuclearEnergyCOW/GRM/gpAttachmentcc:Dr.J.NelsonGrace,Re'gionalAdministrator,RegionII,USNRCSeniorResidentInspector,USNRC,St.LuciePlant87070bob'yl500033587070>PDRADOCK0PDR8/6>~GRMS/0I7/IPEOPLE...SERVINGPEOPLEc-NRCSPECIALREPORTIBCITYWATERSTORAGETANKINOPERABLEFORMAINTENANCEASALLOWEDBYTECHNICALSPECIFICATIONSAt235IhoursonMay28,l987,theIACityWaterStorageTank(CWST)wasdeclaredinoperableaspartofscheduledrepairstobeperformedonthetank.RecentinspectionsoftheIAandIBCWSTperformedonJanuary3,l987,revealedthatcorrosionpittingwastakingplaceontheinteriorshellofthetanks.Theprotectivecoatingisbeginningtodeteriorateandsmallareasareexposedtotheenvironment.Thisresultedinthepittingseeninthetanks.Eventhoughtheextentofthepittingwasnotofimmediateconcernforthestructuralintegrityofthetanks,itwasrecommendedtorepairthetankprotectivecoatingsystemtopreventfurthercorrosion.TheIACWSTrepairswerecompletedonJanuary27,l987.ASpecialReportwaspreviouslysubmittedbyFPLletterL-87-6I,datedFebruary9,I987.InaccordancewiththeSt.LucieUnitIandUnit2TechnicalSpecification3.7.II.I,thisSpecialReportisbeingsubmittedtonotifytheNRCthattheIBCWSThasbeeninoperableforgreaterthantheallowedseven(7)days.Thefollowingistheplantorestoretheequipmenttooperablestatus.ThereasonfordeclaringtheequipmentinoperablewasthemaintenancerepairontheIBCWST.ThetankinnershellhasbeensandblastedandthecorrosionpittinghasbeenevaluatedbyFPLEngineeringandChicagoBridgeIncorporated.Weldrepairsarebeingperformedandtheprotectivecoatingwillbeappliedassoonasweldrepairsarecompleted.TheexpectedcompletiondateofthetankrepairisJulyl5,I987.TheIACWSThasremainedoperabletosupplytheredundantfiresuppressionsystemwhiletheIBCWSTisundergoingrepairs.GRM5/0I7/2