ML17263A542: Difference between revisions

From kanterella
Jump to navigation Jump to search
(Created page by program invented by StriderTol)
(Created page by program invented by StriderTol)
Line 16: Line 16:


=Text=
=Text=
{{#Wiki_filter:ACCELERATEDDISTRIBUTIONDEMONSTRATIONSYSTEMREGULATORYINFORMATIONDISTRIBUTIONSYSTEM(RIDS)ACCESSIONNBR:9403010270DOC.DATE:,94/02/17NOTARIZED:NOFACIL:50-244RobertEmmetGinnaNuclearPlant,Unit1,RochesterGAUTH.NAMEAUTHORAFFILIATIONSTJOHN,J.T.RochesterGas&ElectricCorp.MECREDY,R.C.RochesterGas&ElectricCorp.RECIP.NAMERECIPIENTAFFILIATIONDOCKET05000244
{{#Wiki_filter:ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9403010270 DOC.DATE:,94/02/17 NOTARIZED:
NOFACIL:50-244 RobertEmmetGinnaNuclearPlant,Unit1,Rochester GAUTH.NAMEAUTHORAFFILIATION STJOHN,J.T.
Rochester Gas&ElectricCorp.MECREDY,R.C.
Rochester Gas&ElectricCorp.RECIP.NAME RECIPIENT AFFILIATION DOCKET05000244


==SUBJECT:==
==SUBJECT:==
LER94-001-00:on940119,RaditionMonitorR-32declaredinoperableduetolowoutputbyonedecade.Correctvalueofcalo.brconstantforR-32determined&editedintoR-32controlterminal.W/940217ltr.DISTRIBUTIONCODE:IE22TCOPIESRECEIVED:LTRJENCLiSIZE:C7TITLE:50.73/50.9LicenseeEventReport(LER),IncidentRpt,etc.DSNOTES:LicenseExpdateinaccordancewith10CFR2,2.109(9/19/72).05000244DRECIPIENTIDCODE/NAMEPD1-3PDINTERNAL:AEOD/DOAAEOD/ROAB/DSPNRR/DE/EMEBNRR/DRCH/HHFBNRR/DRCH/HOLBNRR/DRSS/PRPBNRR/DSSA/SRXBRES/DSIR/EIBEXTERNALEG&GBRYCE~J~HNRCPDRNSICPOORE,W.COPIESRECIPIENTLTTRENCLIDCODE/NAME11JOHNSON,A1AEOD/DSP/TPAB2NRR/DE/EELB1NRR/DORS/OEAB1NRR/DRCH/HICB1NRR/DRIL/RPEB2DSSA.SPLB1REGILE021RGB=FILE0122LSTLOBBYWARD11NSICMURPHY,G.A11NUDOCSFULLTXTCOPIESLTTRENCL111111-1111111111111111.11DRDNOTETOALL"RIDS"RECIPIENTS:PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATEYOURNAMEFROMDISTRIBUTIONLISTSFORDOCUMENTSYOUDON'TNEED!ADDSFULLTEXTCONVERSIONREQUIREDTOTALNUMBEROFCOPIESREQUIRED:LTTR27ENCL27 ROCHESTERGASANDELECTRICCORPORATION~89EASTAVENUE,ROCHESTERN.Y.14649.0001SeenSrnrtROBERTCMECREDY,VicePresidenlOlnneNuclearProductionFebruary17,1994TELEPHONEAREACODET165462700U.S.NuclearRegulatoryCommissionDocumentControlDeskAttn:AllenR.JohnsonProjectDirectorateI-3Washington,D.C.20555
LER94-001-00:on 940119,Radition MonitorR-32declaredinoperable duetolowoutputbyonedecade.Correctvalueofcalo.brconstantforR-32determined
&editedintoR-32controlterminal.W/940217 ltr.DISTRIBUTION CODE:IE22TCOPIESRECEIVED:LTR JENCLiSIZE:C7TITLE:50.73/50.9 LicenseeEventReport(LER),IncidentRpt,etc.DSNOTES:License Expdateinaccordance with10CFR2,2.109(9/19/72).
05000244DRECIPIENT IDCODE/NAME PD1-3PDINTERNAL:
AEOD/DOAAEOD/ROAB/DS PNRR/DE/EMEB NRR/DRCH/HHFB NRR/DRCH/HOLB NRR/DRSS/PRPB NRR/DSSA/SRXB RES/DSIR/EIBEXTERNALEG&GBRYCE~J~HNRCPDRNSICPOORE,W.COPIESRECIPIENT LTTRENCLIDCODE/NAME 11JOHNSON,A 1AEOD/DSP/TPAB 2NRR/DE/EELB 1NRR/DORS/OEAB 1NRR/DRCH/HICB 1NRR/DRIL/RPEB 2DSSA.SPLB1REGILE021RGB=FILE0122LSTLOBBYWARD11NSICMURPHY,G.A 11NUDOCSFULLTXTCOPIESLTTRENCL111111-1111111111111111.11DRDNOTETOALL"RIDS"RECIPIENTS:
PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEED!ADDSFULLTEXTCONVERSION REQUIREDTOTALNUMBEROFCOPIESREQUIRED:
LTTR27ENCL27 ROCHESTER GASANDELECTRICCORPORATION
~89EASTAVENUE,ROCHESTER N.Y.14649.0001 SeenSrnrtROBERTCMECREDY,VicePresidenl OlnneNuclearProduction February17,1994TELEPHONE AREACODET165462700U.S.NuclearRegulatory Commission DocumentControlDeskAttn:AllenR.JohnsonProjectDirectorate I-3Washington, D.C.20555


==Subject:==
==Subject:==
LER94-001,RadiationMonitorR-32("B"MainSteamLine)Inoperable,DuetoPersonnelError,CausesaConditionProhibitedbyPlantTechnicalSpecificationsR.E.GinnaNuclearPowerPlantDocketNo.50-244Inaccordancewith10CFR50.73,LicenseeEventReportSystem,item(a)(2)(i)(B),whichrequiresareportof,"Anyoperationorconditionprohibitedbytheplant'sTechnicalSpecifications",theattachedLicenseeEventReportLER94-001isherebysubmitted.Thiseventhasinnowayaffectedthepublic'shealthandsafety.Verytrulyyours,C~RobertC.Mecredyxc:U.S.NuclearRegulatoryCommissionRegionI475AllendaleRoadKingofPrussia,PA19406GinnaSeniorResidentInspector9403010270940217PDRADOCK05000244SPDR NRCFORH366(5-92)~~U.SNUCLEARREGULATORYCOINIISSIONAPPROVEDBY(NNINO.3150-0104EXPIRES5/31/95LICENSEEEVENTREPORT(LER)(Seereverseforrequirednurherofdigits/charactersforeachblock)ESTIHATEDBURDENPERRESPONSETOCOHPLYIIITHTHISINFORHATIONCOLLECTIOHREQUEST:50,0HRS.FORNARDCOHMEHTSREGARDINGBURDENESTIHATETOTHEIHFORHATIOMANDRECORDSMANAGEMENTBRANCH(HNBB7714),U.S.NUCLEARREGULATORYCOHHISSIOM,NASHIHGTON,DC20555-0001,AMD'TOTHEPAPERMORKREDUCTIONPROJECT(3150-0104),OFFICEOFHANAGEHENTANDBUDGETUASHINGTONDC20503.FAGILITYeua<<1)R.E.GinnaNuclearPowerPlantDOCKETNINBER(2)05000244PAGE(3)10F9TITLE(4)RadiationHonitorR-32("B"HainSteamLine)Inoperable,DuetoPersonnelError,CausesaConditionProhibitedbyPlantTechnicalSpecificationsHONTHDAY0119OPERATINGH(nE(9)POUERLEVEL<<10)TEAR94N097EVENTDATE5YEAR94REPORTDATE7I.ERNWSER6SEQUENTIALHUHBERREVISIONHUHBERHOHTHDAYTEAR1794--001--,0002OTHERFACILITIESINVOLVED8FACILITYNAHEFACILITYHAHEDOCKETNUMBERDOCKETNUHBER20.402(b)20.405(a)(l)(i)20.405(a)(1)(ii)20.405(c)50.36(c)(l)50.36(c)(2)50.73(a)(2)(iv)50.73(a)(2)(v)50.73(a)(2)(vii)73.71(b)73.71(c)OTHERTHISREPORTISSUBHITTEDPURSUANTTOTHEREQUIREHENTSOF10CFR:Checkoneormore1120.405(a)(1)(iii)20.405(a)(1)(iv)20'05(a)(1)(v)5073(a)(2)('I)50.73(a)(2)(ii)50.73(a)(2)(iii)LICENSEECONTACTFORTHISLER1250.73(a)(2)(viii)(A)50.73(a)(2)(viii)(B)50.73(a)(2)(x)(SpecifyinAbstractbelowandinText,NRCForm366AHAMEJohnT.St.Hartin-Director,OperatingExperienceTELEPHONENUHBER(IncludeAreaCode)(315)524.4446COMPLETEONELINEFOREACHCQIPONENTFAILUREDESCRIBEDINTHISREPORT13CAUSESYSTEHCOMPOHEHTHAHUFACTURERREPORTABLETONPRDSCAUSESYSTEHCOHPOMENTHAMUFACTURERREPORTABLETOHPRDSSUPPLEMENTALREPORTEXPECTED14YES(Ifyes,completeEXPECTEDSUBHISSIOMDATE).XNOEXPECTEDSUBHISSIONDATE(15)MONTHDAYYEARABSTRACT(Limitto1400spaces,i.e.,approximately15single-spacedtypewrittenLines)(16)OnJanuary19,1994,atapproximately1330EST,withthereactoratapproximately97gosteadystatepower,theoutputofthe"B"MainSteamLineRadiationMonitorR-32wasdiscoveredtobelowbyonedecade.R-32wasdeclaredinoperable.Investigationrevealedthatacalibrationconstantwasincorrectlydocumentedduetoatranspositionerror,andthe'incorrectvaluewaseditedintotheR-32controlterminal.ImmediatecorrectiveactionwastoeditthecorrectvalueofthecalibrationconstantintoR-32.ThisrestoredtheoutputofR-32tothecorrectrange,andR-32wasdeclaredoperable.(ThiseventisNUREG-1022(A)causecode.)CorrectiveactiontoprecluderepetitionisoutlinedinSectionV(B).ThisLERmeetstherequirementsofaSpecialReportrequiredbytheGinnaTechnicalSpecifications.NRCFORM366(5-92)
LER94-001,Radiation MonitorR-32("B"MainSteamLine)Inoperable, DuetoPersonnel Error,CausesaCondition Prohibited byPlantTechnical Specifications R.E.GinnaNuclearPowerPlantDocketNo.50-244Inaccordance with10CFR50.73,LicenseeEventReportSystem,item(a)(2)(i)(B),whichrequiresareportof,"Anyoperation orcondition prohibited bytheplant'sTechnical Specifications",
NRCFORM366A(5-92)U.S.NUCLEARREGULATORYCOIIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBYQGINO.3150-0104EXPIRES5/31/95ESTIMATEDBURDENPERRESPONSETOCOMPLYllITHTHISINFORMATIONCOLLECTIOMREQUEST:50.0HRS.,FORNARDCOMMENTSREGARDIHG,BURDENESTIMATETOTHEIHFORNATIOHAMDRECORDSNAMAGEHENTBRANCH(NNBB7714),U.S.NUCLEARREGULATORYCONNISSIOM,llASHIHGTOM,DC20555-0001ANDTOTHEPAPERNORKREDUCTIOHPROJECT(31(0.0104),OFFICEOFMANAGEMENTANDBUDGET.NASHINGTONDC20503.FACILITYMANE1R.E.GinnaNuclearPowerPlantDOCKETNINBER2YEAR0500024494LERHLNSER6SEQUENTIAL--001--REVISION00PAGE32OF9TEXT(Ifmorespaceisrequired,useadditionalcopiesofHRCForm366A)(17)I.PRE-EVENTPLANTCONDITIONSThereactorwasatapproximately97>steadystatereactorpower.AnengineerwasreviewingaprintoutfromthecontrolterminalfortheUBUMainSteamLineRadiationMonitor(R-32).Thisreviewwasbeingdoneaspartofresearchforaplannedmodification.Thescopeofthemodificationistoreplacethestandbyrecorderformainsteam.lineradiationlevels(recorderRK-47A)withcontinuousindicationoftheseradiationlevelsintheControlRoom.II.DESCRIPTIONOFEVENTA.DATESANDAPPROXIMATETIMESOFMAJOROCCURRENCES:oOctober7,1993:,R-32calibratedperCPI-MON-R31/R32.ThevalueofthecalibrationconstantisincorrectlytransposedandeditedintotheR-32controlterminal.(Eventdate)oOctober7,1993:ProcedurePT-17.5changedtoreflectthetolerancebandofoutputreadingsforR-32,basedonthecalibrationconstanteditedintotheR-32terminal.PT-17.5performedtoverifyoperabilityofR-'32.oJanuary19,1994,1330EST:Discoverydateandtime.oJanuary19,1994,1547EST:ThecorrectvalueofthecalibrationconstantforR-32isdeterminedandeditedintotheR-32controlterminal,perCPI-MON-R31/R32.R-32restoredtooperablestatus.HRCFORM366A(5.92)
theattachedLicenseeEventReportLER94-001isherebysubmitted.
NRCFORH366A(5-92)U.SNUCLEARREGULATORYCQtllSSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBY(RNNO.3150-0104EXPIRES5/31/95ESTIHATEDBURDENPERRESPONSETOCOMPLYWITHTHISINFORHATIONCOLLECTIONREQUEST:50.0HRS.FORWARDCOHMENTSREGARDINGBURDENESTIHATETOTHEINFORHATIONANDRECORDSHANAGEHENTBRANCH(HNBB7714),U.S.NUCLEARREGULATORYCOMMISSION/WASHINGTON,DC20555-0001ANDTOTHEPAPERWORKREDUCTIONPROJECT(3130-0104),OFFICEOFHANAGEMENTANDBUDGETWASHINGTONDC20503.FACILITYNAME1R.E.GinnaNuclearPowerPlantDOCKETNEER2YEAR0500024494--001--00LERNNBER6SEQUENTIALREVISIONPAGE33OF9TEXT(Ifmorespaceisrequired,useadditionaLcopiesofNRCForm366A)(17)B.EVENTPTheannualcalibrationofthe"B"MainSteamLineRadiationMonitor(R-32)wascompletedonOctober7,1993,inaccordancewithcalibrationprocedureCPI-MON-R31/R32,"CalibrationofDAM-3SteamLineRadiationMonitorsR31andR32".Aspartofthecalibration,theInstrumentandControl(I&C)-techniciancalculatesacalibrationconstant,basedonactualdetectorsensitivityandsourcestrength.Aftercompletionofthecalibration,thetechniciantheneditsthenewvalueintothecontrolterminal(SPINGCT-1)forR-32(unit04,channel02oftheSPINGCT-1).(The'SPINGCT-1controlsvariousradiationmonitorchannelsthroughouttheplant.)Thecalibrationconstantisan"editableparameter",andisusedtoconvertcountsperminute(CPM)fromthedetectorintoreadingsofmilliremperhour(mr/hr).Whenthereadingreaches0.1mr/hr,recorderRK-47AintheControlRoomisactivated,andbeginsrecording.Whenthecalibrationconstantwascalculated(onOctober7,1993),theI&Ctechnicianmisplacedthedecimalpointwhiletransposingthecalculatedvaluefromdecimalnotationtoscien-tificnotation.,Consequently,anincorrectpoweroften(onedecadetoolow)wasrecordedontheproceduredatasheetandeditedintotheR-32controlterminal.(Thedecimalreadingwascorrectlycalculatedas"0.0197",butwasincorrectlytransposedanddocumentedas1.97E-03insteadof1.97E-02.)'.TheparameterwastheneditedintotheR-32controlter'minalas1.97E-03.ISurveillanceprocedurePT-17.5-,"HighRangeEffluentMonitorsR-12A,R-14A,R-15A,R-31,R-32",wasthenchangedbytheI&Ctechnician,onOctober7,1993,toreflectthetol'erancebandofoutputreadingsforR-32,basedonthenewvalueofthecalibrationconstant.PT-17.5wasperformed,andthePlantProcessComputerSystem(PPCS)wascheckedtoconfirmthattheou'tputofR-32waswithinthePPCS"qualitycode"and"currentvalue"tolerances.R-32wasthendeclaredoperablebytheControlRoomoperators.NRCFORH366A(5-92)
Thiseventhasinnowayaffectedthepublic'shealthandsafety.Verytrulyyours,C~RobertC.Mecredyxc:U.S.NuclearRegulatory Commission RegionI475Allendale RoadKingofPrussia,PA19406GinnaSeniorResidentInspector 9403010270 940217PDRADOCK05000244SPDR NRCFORH366(5-92)~~U.SNUCLEARREGULATORY COINIISSION APPROVEDBY(NNINO.3150-0104 EXPIRES5/31/95LICENSEEEVENTREPORT(LER)(Seereverseforrequirednurherofdigits/characters foreachblock)ESTIHATED BURDENPERRESPONSETOCOHPLYIIITHTHISINFORHATION COLLECTIOH REQUEST:50,0HRS.FORNARDCOHMEHTSREGARDING BURDENESTIHATETOTHEIHFORHATIOM ANDRECORDSMANAGEMENT BRANCH(HNBB7714),U.S.NUCLEARREGULATORY COHHISSIOM, NASHIHGTON, DC20555-0001, AMD'TOTHEPAPERMORK REDUCTION PROJECT(3150-0104),
HRCFORM366A(592)USNUCLEARREGULATORYCQIIISSIOHLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBYOIBNO.3150-0104EXPIRES5/31/95ESTIMATEDBURDENPERRESPOHSETOCOMPLYWITHTHISINFORMATIONCOLLECTIONREQUEST:50.0HRS.FORWARDCOMMENTSREGARDINGBURDENESTIMATETOTHEINFORMATIONANDRECORDSMANAGEHEHTBRANCH(MNBB7714),U.S.NUCLEARREGULATORYCOMMISSIOHiWASHINGTON,DC20555-0001AHDTOTHEPAPERWORKREDUCTIONPROJECT(31400104),OFFICEOFMANAGEMENTAHDBUDGETWASHINGTONDC20503.FACILITYNAKE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244YEAR94--001--00LERNNBER6SEQUENTIALREVISIONPAGE34OF9TEXT(Ifmorespaceisrequired,useadditionalcopiesofHRCForm366A)(17)PT-17.5wasperformedeachmonththereaftertoverifytheoperabili;tyofR-32.DailychannelcheckswereperformedbyControlRoomoperatorstoconfirm*thePPCSvalueswerestill"withintolerances.OnJanuary19,1994,atapproximately1330EST,withthereactoratapproximately974steadystatereactorpower,anengineerwasreviewingaprintoutfromtheCT-1controlterminal.Thisreviewwasbeingdoneaspartofresearchforaplannedmodification.ThescopeofthemodificationistoreplacestandbyrecorderRK-47AwithcontinuousindicationofmainsteamlineradiationlevelsintheControlRoom.Theengineercalcu-latedthecalibrationconstants,and,basedonhisknowledgeofthesystem,observedthattheconstantbeingusedinR-32wasnotwithinallowablesystemparameters.Furtherinvestigationrevealedthatthisinconsistentvaluewascausedby.thetranspositionerrordiscussedabove.?TheengineernotifiedtheI&Cgroupofhisdiscovery.I&Cconcurredwiththeengineer.Theynotify':edtheControlRoomoperatorsthatR-32had'anincorrectcalibrationconstantandthattheoutputwasonedecadetoolow.TheControlRoomoperatorsevaluatedthisinformation,andformallydeclaredR-32inoperableatapproximately1430ESTonJanuary19,1993.ThecorrectvalueofthecalibrationconstantwaseditedintotheR-32controlterminal,perCPI-MON-R31/R32.PT-17.5.waschangedtoreflectthedataforthecorrectedvalueofthecalibrationconstantandwasperformedtoverifytheoperabilityofR-32.TheControlRoomoperatorscheckedthePPCS,andconfirmedthattheoutputwaswithinthePPCStolerances.'-32wasdeclaredoperable,andreturnedtoserviceatapproximately1547EST,January19,1994.C.INOPERABLESTRUCTURESiCOMPONENTSIORSYSTEMSTHATCONTRIBUTEDTOTHEEVENT:NoneD.OTHERSYSTEMSORSECONDARYFUNCTIONSAFFECTED:NoneNRCFORM366A(5-92)
OFFICEOFHANAGEHENT ANDBUDGETUASHINGTON DC20503.FAGILITYeua<<1)R.E.GinnaNuclearPowerPlantDOCKETNINBER(2)05000244PAGE(3)10F9TITLE(4)Radiation HonitorR-32("B"HainSteamLine)Inoperable, DuetoPersonnel Error,CausesaCondition Prohibited byPlantTechnical Specifications HONTHDAY0119OPERATING H(nE(9)POUERLEVEL<<10)TEAR94N097EVENTDATE5YEAR94REPORTDATE7I.ERNWSER6SEQUENTIAL HUHBERREVISIONHUHBERHOHTHDAYTEAR1794--001--,0002OTHERFACILITIES INVOLVED8FACILITYNAHEFACILITYHAHEDOCKETNUMBERDOCKETNUHBER20.402(b) 20.405(a)(l)(i)20.405(a)(1)(ii) 20.405(c) 50.36(c)(l) 50.36(c)(2) 50.73(a)(2)(iv) 50.73(a)(2)(v) 50.73(a)(2)(vii) 73.71(b)73.71(c)OTHERTHISREPORTISSUBHITTED PURSUANTTOTHEREQUIREHENTS OF10CFR:Checkoneormore1120.405(a)(1)(iii) 20.405(a)(1)(iv) 20'05(a)(1)(v) 5073(a)(2)('I) 50.73(a)(2)(ii) 50.73(a)(2)(iii)
NRCFORH366A(5-92)US.NUCLEARREGULATORYCOHIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBYQlBNO3150-0104EXPIRES5/31/95ESTIHATEDBURDENPERRESPONSETOCOMPLYUITHTHISINFORNATIONCOLLECTIOHREOUEST:50.0HRS.FORIIARDCOHHEHTSREGARDIHGBURDENESTINATETOTHEINFORHATIONANDRECORDSNANAGEHENTBRANCH(NHBB7714),U.S.NUCLEARREGULATORYCONHISSION,MASHIHGTOH,DC20555-0001AHDTOTHEPAPERIQRKREDUCTIONPROJECT(3110-0104),OFFICEOFNANAGEHEHTANDBUDGETNASHINGTOHDC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244YEAR94--001--00LERNINBER6SEOUENTIALREVISIONPAGE35OF9TEXT(Ifmorespaceisrequired,useadditionalcopiesofHRCForm366A)(17)E.METHODOFDISCOVERY:Thiseventwasidentifiedbyanengineer,whoreviewedaprintoutfromtheCT-1controlterminalaspartofresearchforaplannedmodificationtoreplacestandbyrecorderRK-47AwithcontinuousindicationintheControlRoom.Theengineerobservedthatthecalibrationconstantbeingusedwasnotwithinallowablesystemparameters.F.OPERATORACTION:'TheControlRoomoperatorswerenotifiedofthisevent,anddeclaredR-32inoperable.,Subsequently,theControlRoomoperatorsnotifiedhighersupervisionandtheNRC.R-32wasdeclaredoperableafterthecorrectcalibrationconstantwaseditedintotheR-32controlterminal,PT-17.5was,satisfactorilycompleted,andPPCSchannelchecksofR-32wereperformed.G.SAFETYSYSTEMRESPONSE:NoneIII.CAUSEOFEVENTA.IMMEDIATECAUSE:TheimmediatecauseofR-32beingconsideredtobeinoperablewasthattheoutputofR-32wasdiscoveredtobelowbyonedecade,suchthatR-32wouldhaveactivatedtheRK-47Arecorderatapproximately1mr/hrinsteadofthedesignvalueof0.1mr/hr.B.INTERMEDIATECAUSE:,TheintermediatecauseofthelowoutputofR-32wasthatthevalueofthecalibrationconstantwastransposedincorrectlywhenchangingthevaluefromdecimalnotationtoscientificnotation.HRCFORH366A(5-92)
LICENSEECONTACTFORTHISLER1250.73(a)(2)(viii)(A) 50.73(a)(2)(viii)(B) 50.73(a)(2)(x)
NRCFORN366A(5-92)U.S.NUCLEARREGULATORYCIBIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBYQGINO.3150-0104EXPIRES5/31/95ESTINATEDBURDENPERRESPONSETOCOHPLYNITHTHISINFORNATIONCOLLECTIONREQUEST:50.0HRS.FORNARDCOHNEHTSREGARDINGBURDENESTINATETOTHEIHFORHATIOHANDRECORDSNANAGENENTBRAHCH(HNBB7714),U.S.NUCLEARREGULATORYCONHISSIOH~NASNINGTOH,DC205550001AHDTOTHEPAPERWORKREDUCTIONPROJECT(3140-0104),OFFICEOFNANAGEMEHTANDBUDGETNASHINGTONDC20503.FACILITYNANE1R.E.GinnaNuclearPowerPlantDOCKETNIMBER205000244YEAR94LERNINBER6SEQUEHTIAL--001--REVISIOHM00PAGE36OF9iTEXT(Ifmorespaceisrequired,useadditionalcopiesofHRCForm366A)(17)C.ROOTCAUSE:TheunderlyingcauseofthetranspositionerrorwasapersonnelerrorbyanI&Ctechnician.Thiswasacognitivepersonnelerrorandwasnotcontrarytothecalibrationprocedurebeing.used.Therewerenounusualcharacteristicsoftheworklocationwhichcontributedtotheerror.(ThiseventisNUREG-1022(A)causecode,PersonnelError.)IV.ANALYSISOFEVENT:Thiseventisreportableinaccordancewith10CFR50.73,LicenseeEventReportSystem,item(a)(2)(i)(B),whichrequiresareportof,"Anyoperationorconditionprohibitedbytheplant'sTechnicalSpecifications".TheoutputofR-32beingonedecadetoolow.resultedinR-32beingconsideredinoperable.SincethisconditionexistedsinceOctober7,1993,andwasnotdiscovereduntilJanuary19,1994,R-32wasinoperableformorethanseven.days.ThisisaconditionprohibitedbytheGinnaTechnicalSpecifications(TS).oSpecification3.5.4states:TheradiationaccidentmonitoringinstrumentationchannelsshowninTable3.5-6shallbeoperable,-.wheneverthereactorisatorabove'otshutdown.Withoneor"moreradiationmonitoringchannelsinoperable,taketheactionshowninTable3.5-6.Startupmaycommenceorcontinueconsistentwiththeactionstatement.oActionstatementsfromTable3.5-6states:WiththenumberofoperablechannelslessthanrequiredbytheMinimumChannelsOperablerequirements,eitherrestoretheinoperablechannel(s)tooperablestatuswithin7daysoftheevent,orprepare,andsubmitaSpecialReporttotheCommissionwithin30daysfollowingtheevent.outliningtheaction'.taken,thecauseoftheinoperabilityandtheplansandscheduleforrestoringthesystemtooperablestatus.HRCFORN366A(5-92)  
(SpecifyinAbstractbelowandinText,NRCForm366AHAMEJohnT.St.Hartin-Director, Operating Experience TELEPHONE NUHBER(IncludeAreaCode)(315)524.4446COMPLETEONELINEFOREACHCQIPONENT FAILUREDESCRIBED INTHISREPORT13CAUSESYSTEHCOMPOHEHT HAHUFACTURER REPORTABLE TONPRDSCAUSESYSTEHCOHPOMENT HAMUFACTURER REPORTABLE TOHPRDSSUPPLEMENTAL REPORTEXPECTED14YES(Ifyes,completeEXPECTEDSUBHISSIOM DATE).XNOEXPECTEDSUBHISSIONDATE(15)MONTHDAYYEARABSTRACT(Limitto1400spaces,i.e.,approximately 15single-spaced typewritten Lines)(16)OnJanuary19,1994,atapproximately 1330EST,withthereactoratapproximately 97gosteadystatepower,theoutputofthe"B"MainSteamLineRadiation MonitorR-32wasdiscovered tobelowbyonedecade.R-32wasdeclaredinoperable.
Investigation revealedthatacalibration constantwasincorrectly documented duetoatransposition error,andthe'incorrect valuewaseditedintotheR-32controlterminal.
Immediate corrective actionwastoeditthecorrectvalueofthecalibration constantintoR-32.ThisrestoredtheoutputofR-32tothecorrectrange,andR-32wasdeclaredoperable.
(ThiseventisNUREG-1022 (A)causecode.)Corrective actiontoprecluderepetition isoutlinedinSectionV(B).ThisLERmeetstherequirements ofaSpecialReportrequiredbytheGinnaTechnical Specifications.
NRCFORM366(5-92)
NRCFORM366A(5-92)U.S.NUCLEARREGULATORY COIIISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQGINO.3150-0104 EXPIRES5/31/95ESTIMATED BURDENPERRESPONSETOCOMPLYllITHTHISINFORMATION COLLECTIOM REQUEST:50.0HRS.,FORNARDCOMMENTSREGARDIHG,BURDEN ESTIMATETOTHEIHFORNATIOH AMDRECORDSNAMAGEHENT BRANCH(NNBB7714),U.S.NUCLEARREGULATORY CONNISSIOM, llASHIHGTOM, DC20555-0001 ANDTOTHEPAPERNORK REDUCTIOH PROJECT(31(0.0104),
OFFICEOFMANAGEMENT ANDBUDGET.NASHINGTON DC20503.FACILITYMANE1R.E.GinnaNuclearPowerPlantDOCKETNINBER2YEAR0500024494LERHLNSER6SEQUENTIAL
--001--REVISION00PAGE32OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)I.PRE-EVENT PLANTCONDITIONS Thereactorwasatapproximately 97>steadystatereactorpower.Anengineerwasreviewing aprintoutfromthecontrolterminalfortheUBUMainSteamLineRadiation Monitor(R-32).Thisreviewwasbeingdoneaspartofresearchforaplannedmodification.
Thescopeofthemodification istoreplacethestandbyrecorderformainsteam.lineradiation levels(recorder RK-47A)withcontinuous indication oftheseradiation levelsintheControlRoom.II.DESCRIPTION OFEVENTA.DATESANDAPPROXIMATE TIMESOFMAJOROCCURRENCES:
oOctober7,1993:,R-32calibrated perCPI-MON-R31/R32.
Thevalueofthecalibration constantisincorrectly transposed andeditedintotheR-32controlterminal.
(Eventdate)oOctober7,1993:Procedure PT-17.5changedtoreflectthetolerance bandofoutputreadingsforR-32,basedonthecalibration constanteditedintotheR-32terminal.
PT-17.5performed toverifyoperability ofR-'32.oJanuary19,1994,1330EST:Discovery dateandtime.oJanuary19,1994,1547EST:Thecorrectvalueofthecalibration constantforR-32isdetermined andeditedintotheR-32controlterminal, perCPI-MON-R31/R32.
R-32restoredtooperablestatus.HRCFORM366A(5.92)
NRCFORH366A(5-92)U.SNUCLEARREGULATORY CQtllSSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBY(RNNO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCOMPLYWITHTHISINFORHATION COLLECTION REQUEST:50.0HRS.FORWARDCOHMENTSREGARDING BURDENESTIHATETOTHEINFORHATION ANDRECORDSHANAGEHENT BRANCH(HNBB7714),U.S.NUCLEARREGULATORY COMMISSION/
WASHINGTON, DC20555-0001 ANDTOTHEPAPERWORK REDUCTION PROJECT(3130-0104),
OFFICEOFHANAGEMENT ANDBUDGETWASHINGTON DC20503.FACILITYNAME1R.E.GinnaNuclearPowerPlantDOCKETNEER2YEAR0500024494--001--00LERNNBER6SEQUENTIAL REVISIONPAGE33OF9TEXT(Ifmorespaceisrequired, useadditionaL copiesofNRCForm366A)(17)B.EVENTPTheannualcalibration ofthe"B"MainSteamLineRadiation Monitor(R-32)wascompleted onOctober7,1993,inaccordance withcalibration procedure CPI-MON-R31/R32, "Calibration ofDAM-3SteamLineRadiation MonitorsR31andR32".Aspartofthecalibration, theInstrument andControl(I&C)-technician calculates acalibration
: constant, basedonactualdetectorsensitivity andsourcestrength.
Aftercompletion ofthecalibration, thetechnician theneditsthenewvalueintothecontrolterminal(SPINGCT-1)forR-32(unit04,channel02oftheSPINGCT-1).(The'SPING CT-1controlsvariousradiation monitorchannelsthroughout theplant.)Thecalibration constantisan"editable parameter",
andisusedtoconvertcountsperminute(CPM)fromthedetectorintoreadingsofmilliremperhour(mr/hr).Whenthereadingreaches0.1mr/hr,recorderRK-47AintheControlRoomisactivated, andbeginsrecording.
Whenthecalibration constantwascalculated (onOctober7,1993),theI&Ctechnician misplaced thedecimalpointwhiletransposing thecalculated valuefromdecimalnotationtoscien-tificnotation.,
Consequently, anincorrect poweroften(onedecadetoolow)wasrecordedontheprocedure datasheetandeditedintotheR-32controlterminal.
(Thedecimalreadingwascorrectly calculated as"0.0197",
butwasincorrectly transposed anddocumented as1.97E-03insteadof1.97E-02.)'.Theparameter wastheneditedintotheR-32controlter'minal as1.97E-03.ISurveillance procedure PT-17.5-,
"HighRangeEffluentMonitorsR-12A,R-14A,R-15A,R-31,R-32",wasthenchangedbytheI&Ctechnician, onOctober7,1993,toreflectthetol'erance bandofoutputreadingsforR-32,basedonthenewvalueofthecalibration constant.
PT-17.5wasperformed, andthePlantProcessComputerSystem(PPCS)wascheckedtoconfirmthattheou'tputofR-32waswithinthePPCS"qualitycode"and"currentvalue"tolerances.
R-32wasthendeclaredoperablebytheControlRoomoperators.
NRCFORH366A(5-92)
HRCFORM366A(592)USNUCLEARREGULATORY CQIIISSIOHLICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYOIBNO.3150-0104 EXPIRES5/31/95ESTIMATED BURDENPERRESPOHSETOCOMPLYWITHTHISINFORMATION COLLECTION REQUEST:50.0HRS.FORWARDCOMMENTSREGARDING BURDENESTIMATETOTHEINFORMATION ANDRECORDSMANAGEHEHT BRANCH(MNBB7714),U.S.NUCLEARREGULATORY COMMISSIOHi WASHINGTON, DC20555-0001 AHDTOTHEPAPERWORK REDUCTION PROJECT(31400104),OFFICEOFMANAGEMENT AHDBUDGETWASHINGTON DC20503.FACILITYNAKE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244YEAR94--001--00LERNNBER6SEQUENTIALREVISIONPAGE34OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)PT-17.5wasperformed eachmonththereafter toverifytheoperabili;ty ofR-32.Dailychannelcheckswereperformed byControlRoomoperators toconfirm*the PPCSvalueswerestill"withintolerances.
OnJanuary19,1994,atapproximately 1330EST,withthereactoratapproximately 974steadystatereactorpower,anengineerwasreviewing aprintoutfromtheCT-1controlterminal.
Thisreviewwasbeingdoneaspartofresearchforaplannedmodification.
Thescopeofthemodification istoreplacestandbyrecorderRK-47Awithcontinuous indication ofmainsteamlineradiation levelsintheControlRoom.Theengineercalcu-latedthecalibration constants, and,basedonhisknowledge ofthesystem,observedthattheconstantbeingusedinR-32wasnotwithinallowable systemparameters.
Furtherinvestigation revealedthatthisinconsistent valuewascausedby.thetransposition errordiscussed above.?TheengineernotifiedtheI&Cgroupofhisdiscovery.
I&Cconcurred withtheengineer.
Theynotify':ed theControlRoomoperators thatR-32had'anincorrect calibration constantandthattheoutputwasonedecadetoolow.TheControlRoomoperators evaluated thisinformation, andformallydeclaredR-32inoperable atapproximately 1430ESTonJanuary19,1993.Thecorrectvalueofthecalibration constantwaseditedintotheR-32controlterminal, perCPI-MON-R31/R32.
PT-17.5.waschangedtoreflectthedataforthecorrected valueofthecalibration constantandwasperformed toverifytheoperability ofR-32.TheControlRoomoperators checkedthePPCS,andconfirmed thattheoutputwaswithinthePPCStolerances.'-32 wasdeclaredoperable, andreturnedtoserviceatapproximately 1547EST,January19,1994.C.INOPERABLE STRUCTURES iCOMPONENTS IORSYSTEMSTHATCONTRIBUTEDTOTHEEVENT:NoneD.OTHERSYSTEMSORSECONDARY FUNCTIONS AFFECTED:
NoneNRCFORM366A(5-92)
NRCFORH366A(5-92)US.NUCLEARREGULATORY COHIISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQlBNO3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCOMPLYUITHTHISINFORNATION COLLECTIOH REOUEST:50.0HRS.FORIIARDCOHHEHTSREGARDIHG BURDENESTINATETOTHEINFORHATION ANDRECORDSNANAGEHENT BRANCH(NHBB7714),U.S.NUCLEARREGULATORY CONHISSION, MASHIHGTOH, DC20555-0001 AHDTOTHEPAPERIQRK REDUCTION PROJECT(3110-0104),
OFFICEOFNANAGEHEHT ANDBUDGETNASHINGTOH DC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244YEAR94--001--00LERNINBER6SEOUENTIALREVISIONPAGE35OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)E.METHODOFDISCOVERY:
Thiseventwasidentified byanengineer, whoreviewedaprintoutfromtheCT-1controlterminalaspartofresearchforaplannedmodification toreplacestandbyrecorderRK-47Awithcontinuous indication intheControlRoom.Theengineerobservedthatthecalibration constantbeingusedwasnotwithinallowable systemparameters.
F.OPERATORACTION:'TheControlRoomoperators werenotifiedofthisevent,anddeclaredR-32inoperable.,
Subsequently, theControlRoomoperators notifiedhighersupervision andtheNRC.R-32wasdeclaredoperableafterthecorrectcalibration constantwaseditedintotheR-32controlterminal, PT-17.5was,satisfactorily completed, andPPCSchannelchecksofR-32wereperformed.
G.SAFETYSYSTEMRESPONSE:
NoneIII.CAUSEOFEVENTA.IMMEDIATE CAUSE:Theimmediate causeofR-32beingconsidered tobeinoperable wasthattheoutputofR-32wasdiscovered tobelowbyonedecade,suchthatR-32wouldhaveactivated theRK-47Arecorderatapproximately 1mr/hrinsteadofthedesignvalueof0.1mr/hr.B.INTERMEDIATE CAUSE:,Theintermediate causeofthelowoutputofR-32wasthatthevalueofthecalibration constantwastransposed incorrectly whenchangingthevaluefromdecimalnotationtoscientific notation.
HRCFORH366A(5-92)
NRCFORN366A(5-92)U.S.NUCLEARREGULATORY CIBIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQGINO.3150-0104 EXPIRES5/31/95ESTINATED BURDENPERRESPONSETOCOHPLYNITHTHISINFORNATION COLLECTION REQUEST:50.0HRS.FORNARDCOHNEHTSREGARDING BURDENESTINATETOTHEIHFORHATIOH ANDRECORDSNANAGENENT BRAHCH(HNBB7714),U.S.NUCLEARREGULATORY CONHISSIOH
~NASNINGTOH, DC205550001AHDTOTHEPAPERWORK REDUCTION PROJECT(3140-0104),
OFFICEOFNANAGEMEHT ANDBUDGETNASHINGTON DC20503.FACILITYNANE1R.E.GinnaNuclearPowerPlantDOCKETNIMBER205000244YEAR94LERNINBER6SEQUEHTIAL
--001--REVISIOHM00PAGE36OF9iTEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)C.ROOTCAUSE:Theunderlying causeofthetransposition errorwasapersonnel errorbyanI&Ctechnician.
Thiswasacognitive personnel errorandwasnotcontrarytothecalibration procedure being.used.Therewerenounusualcharacteristics oftheworklocationwhichcontributed totheerror.(ThiseventisNUREG-1022(A)causecode,Personnel Error.)IV.ANALYSISOFEVENT:Thiseventisreportable inaccordance with10CFR50.73,LicenseeEventReportSystem,item(a)(2)(i)(B),whichrequiresareportof,"Anyoperation orcondition prohibited bytheplant'sTechnical Specifications".
TheoutputofR-32beingonedecadetoolow.resulted inR-32beingconsidered inoperable.
Sincethiscondition existedsinceOctober7,1993,andwasnotdiscovered untilJanuary19,1994,R-32wasinoperable formorethanseven.days.Thisisacondition prohibited bytheGinnaTechnical Specifications (TS).oSpecification 3.5.4states:Theradiation accidentmonitoring instrumentation channelsshowninTable3.5-6shallbeoperable,-.whenever thereactorisatorabove'otshutdown.
Withoneor"moreradiation monitoring channelsinoperable, taketheactionshowninTable3.5-6.Startupmaycommenceorcontinueconsistent withtheactionstatement.
oActionstatements fromTable3.5-6states:WiththenumberofoperablechannelslessthanrequiredbytheMinimumChannelsOperablerequirements, eitherrestoretheinoperable channel(s) tooperablestatuswithin7daysoftheevent,orprepare,and submitaSpecialReporttotheCommission within30daysfollowing theevent.outlining theaction'.taken, thecauseoftheinoperability andtheplansandscheduleforrestoring thesystemtooperablestatus.HRCFORN366A(5-92)  


NRCFORH366A(5-92)U.S.NUCLEARREGULATORYCOWISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBYQNINO.3150-0104EXPIRES5/31/95ESTIHATEDBURDENPERRESPONSETOCOHPLYNITHTHISIHFORHATIOHCOLLECTIOHREQUEST:50.0HRS.FORNARDCONHEHTSREGARDIHGBURDENESTIHATETOTHEINFORHATIOHANDRECORDSHAHAGEHEHTBRANCH(HHBB7714),U.S.NUCLEARREGULATORYCONHISSIOH,NASHIHGTON,DC20555-0001,ANDTOTHEPAPERNORKREDUCTIONPROJECT(3150-0104),OFFICEOFHAHAGENENTANDBUDGETNASHINGTONDC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNINIBER20500024494--001--00LERNINBER6YEARSEQUENTIALREVISIONPAGE37OF9TEXT(Ifmorespaceisrequired,useadditionalcopiesofNRCForm366A)(17)The"B<<MainSteamLineRadiationMonitor(R-32)inoperabilitywasnotdiscovereduntilJanuary19,1994.Therefore,theconditionwasnotrecognizedatthetimeaSpecialReportwouldhavebeenrequired.Consequently,aSpecialReportwasnotsubmittedwithin30daysfollowingtheeventonOctober7,1993.Anassessmentwasperformedconsideringboththesafetyconsequencesandimplicationsofthiseventwiththefollowingresultsandconclusions:TherewerenooperationalorsafetyconsequencesorimplicationsattributedtoR-32beinginoperableforgreaterthansevendays,becauseR-32wasstillfunctioningandcapableofrespondingtoradiationlevelsat104oftheTSlimits,insteadofthedesired14ofTSlimits.Becausethesetpointisveryconservativetobeginwith,theonedecadeerrorinthecalibrationconstantstillallowedthesystemtorespondwellwithintheTSlimits.ThedesignforR-32isthatwhentheoutputreaches0.1mr/hr,recorderRK-47AactivatestoprovideindicationandrecordingofR-32intheControlRoom.R-32was.functioningcorrectly,butduetothistranspositionerror,theoutputwasinerrorlowbyonedecade.(ThedetectorforR-32continuedtofunctionasdesigned,andcontinuedtodetectandmonitorradioactivity.Thedetectoroutput,asmeasuredinCPMwasstill,correct.However,the.outputreading,"as'expressedinmr/hr,wa'sone'ecadetoolow.)Therefore,theRK-47ArecorderintheControlRoomwouldnothaveactivateduntiltheactualradiationreached1mr/hr(onedecadehigherthandesired).Thiscorrespondstoareleaseconcentrationofapproximately1E-02microcuriespercubiccentimeter(uCi/cc)noblegasesorareleaserateofapproximately1.33E-02curiesper'econd(Ci/sec).Notethatthe"instantaneous"TSlimitforareleaseratefromthelocationwouldbesimilartotheAirEjectoror1.42E-01Ci/sec.Theerrorbeforetherecorderstartedwouldrepresent104oftheTSlimit,ratherthan1%whenthecorrectcalibrationconstantisused.NRCFORI4366A(5.92)
NRCFORH366A(5-92)U.S.NUCLEARREGULATORY COWISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQNINO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCOHPLYNITHTHISIHFORHATIOH COLLECTIOHREQUEST:50.0HRS.FORNARDCONHEHTSREGARDIHGBURDENESTIHATETOTHEINFORHATIOH ANDRECORDSHAHAGEHEHT BRANCH(HHBB7714),U.S.NUCLEARREGULATORY CONHISSIOH, NASHIHGTON, DC20555-0001, ANDTOTHEPAPERNORK REDUCTION PROJECT(3150-0104),
NRCFORH366A(5-92)U.S.NUCLEARREGULATORYCOIIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATION'PPROVEDBY(NBNO.3150-0104EXPIRES5/31/95ESTIHATEDBURDENPERRESPONSETOCONPLYIJITHTHISINFORHATIOHCOLLECTIOHREQUEST:50.0HRS.FORIIARDCOHHEHTSREGARDIHGBURDENESTINATETOTHEIHFORHATIONAHDRECORDSNANAGEHENTBRANCH(NHBB7714),U.S.NUCLEARREGULATORYCONHISSIOH,IIASHIHGTON,DC20555-0001ANDTOTHEPAPERNORKREDUCTIONPROJECT(3140-0104),OFFICEOFHANAGEHENTANDBUDGETIIASHINGTONDC20503.FACILITYlONE1R.E.GinnaNuclearPowerPlantDOCKETNINBER205000244YEAR94LERNINBER6SEQUENTIAL--001-REVISION00PAGE38OF9TEXT(Ifmorespaceisrequired,useadditionalcopiesofHRCForm366A)(17)ThereleasepaththatR-32monitorsismainsteamreliefvalvedischarge.R-32readingsareusedtodeterminethepotentialdosetothegeneralpopulationthroughreleasesfromthesteamgenerators,whenthereliefvalveshaveliftedafteraprimarytosecondarysteamgeneratorleak.TherewerenoreleasesthroughthisreleasepathduringthetimethatR-32wasconsideredinoperable.Ifreliefvalveshadliftedduringthistime,thedurationofthereleaseandtheamountofactivityreleasedwouldhavebeendeterminedfromdatafromseveralsources,includingR-32.R-32data'wouldhavebeendiscoveredtobeinconsistentwithotherdata'tsuchatime,andwouldnotaffecttheaccuracyofreleasecalculations.Basedontheabove,itcanbeconcludedthatthepublic'shealthandsafetywasassuredatalltimes.V.CORRECTIVEACTIONA.ACTIONTAKENTORETURNAFFECTEDSYSTEMSTOPRE-EVENTNORMALSTATUS:oThecorrectvalueofthecalibrationconstantforR-32wasdeterminedandeditedintotheR-32controlterminal,perCPI-MON-R31/R32.oPT-17.5waschangedtoreflectthecorrectvalueofthecalibrationconstantandwasperformedtoverifyoperabilityofR-32.oAPPCSchannelcheckwasperformedtoverifyoperabilityofR-32.CoTheotherradiationchannelscontrolledbytheSPINGCT-1controlterminalwereverifiedtohavethecorrectcalibrationconstantseditedintothecontrolterminal.HRCFORH366A(5-92)
OFFICEOFHAHAGENENT ANDBUDGETNASHINGTON DC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNINIBER20500024494--001--00LERNINBER6YEARSEQUENTIAL REVISIONPAGE37OF9TEXT(Ifmorespaceisrequired, useadditional copiesofNRCForm366A)(17)The"B<<MainSteamLineRadiation Monitor(R-32)inoperability wasnotdiscovered untilJanuary19,1994.Therefore, thecondition wasnotrecognized atthetimeaSpecialReportwouldhavebeenrequired.
NRCFORH366A(5-92)U.S.NUCLEARREGUULTORYCQBIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATIONAPPROVEDBYQGINO.3150-0104EXPIRES5/31/95ESTIHATEDBURDENPERRESPONSETOCONPLYIIITHTHISIHFORHATIONCOLLECTIONREQUEST:50.0HRS~FORIIARDCOHHEHTSREGARDIHGBURDENESTIHATETOTHEINFORHATIONANDRECORDSHANAGENENTBRANCH(HNBB7714),U.S.NUCLEARREGULATORYCOHHISSIOH~llASHINGTOH,DC20555-0001ANDTOTHEPAPERNORKREDUCTIONPROJECT(3140-0104),OFFICEOFHANAGEHEHTAHDBUDGETMASHING'TOHDC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244LERNINBER6YEARSEQUENTIAL94--001--REVISION00~PAGE39OF9TEXT(lfmorespaceisrequired,useadditionalcopiesoiHRCForm366A)(17)B.ACTIONTAKENORPLANNEDTOPREVENTRECURRENCE-oProcedureCPI-MON-R31/R32hasbeenrevisedtoprovideatolerancebandforacceptablevaluesofthecalibrationconstant.Thistolerancewillbeexpressedinbothdecimalandscientificnotation.oCalibrationproceduresforotherchannelscontrolledbyCT-1havebeenreviewed.Procedureswillberevisedtoprovidetheappropriatetolerancebandsforeditableparameters.oTheimportanceofmakingcalculationscorrectlywillbereemphasizedtoallI&Cpersonnel,includingtheconsequencesofincorrectresults.VI.ADDITIONALINFORMATION:A.FAILEDCOMPONENTS:NoneB.PREVIOUSLERsONSIMILAREVENTS:AsimilarLEReventhistoricalsearchwasconductedwiththefollowingresults:NodocumentationofsimilarLEReventswiththesamerootcauseatGinnaNuclearPowerPlantcouldbeidentified.C.SPECIALCOMMENTS:NoneNRCFORH366A(5-92) lI}}
Consequently, aSpecialReportwasnotsubmitted within30daysfollowing theeventonOctober7,1993.Anassessment wasperformed considering boththesafetyconsequences andimplications ofthiseventwiththefollowing resultsandconclusions:
Therewerenooperational orsafetyconsequences orimplications attributed toR-32beinginoperable forgreaterthansevendays,becauseR-32wasstillfunctioning andcapableofresponding toradiation levelsat104oftheTSlimits,insteadofthedesired14ofTSlimits.Becausethesetpointisveryconservative tobeginwith,theonedecadeerrorinthecalibration constantstillallowedthesystemtorespondwellwithintheTSlimits.ThedesignforR-32isthatwhentheoutputreaches0.1mr/hr,recorderRK-47Aactivates toprovideindication andrecording ofR-32intheControlRoom.R-32was.functioning correctly, butduetothistransposition error,theoutputwasinerrorlowbyonedecade.(ThedetectorforR-32continued tofunctionasdesigned, andcontinued todetectandmonitorradioactivity.
Thedetectoroutput,asmeasuredinCPMwasstill,correct.However,the.outputreading,"
as'expressed inmr/hr,wa'sone'ecade toolow.)Therefore, theRK-47ArecorderintheControlRoomwouldnothaveactivated untiltheactualradiation reached1mr/hr(onedecadehigherthandesired).
Thiscorresponds toareleaseconcentration ofapproximately 1E-02microcuries percubiccentimeter (uCi/cc)noblegasesorareleaserateofapproximately 1.33E-02curiesper'econd(Ci/sec).
Notethatthe"instantaneous" TSlimitforareleaseratefromthelocationwouldbesimilartotheAirEjectoror1.42E-01Ci/sec.Theerrorbeforetherecorderstartedwouldrepresent 104oftheTSlimit,ratherthan1%whenthecorrectcalibration constantisused.NRCFORI4366A(5.92)
NRCFORH366A(5-92)U.S.NUCLEARREGULATORY COIIISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION
'PPROVEDBY(NBNO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCONPLYIJITHTHISINFORHATIOH COLLECTIOH REQUEST:50.0HRS.FORIIARDCOHHEHTSREGARDIHG BURDENESTINATETOTHEIHFORHATION AHDRECORDSNANAGEHENT BRANCH(NHBB7714),U.S.NUCLEARREGULATORY CONHISSIOH, IIASHIHGTON, DC20555-0001 ANDTOTHEPAPERNORK REDUCTION PROJECT(3140-0104),
OFFICEOFHANAGEHENT ANDBUDGETIIASHINGTON DC20503.FACILITYlONE1R.E.GinnaNuclearPowerPlantDOCKETNINBER205000244YEAR94LERNINBER6SEQUENTIAL
--001-REVISION00PAGE38OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)ThereleasepaththatR-32monitorsismainsteamreliefvalvedischarge.
R-32readingsareusedtodetermine thepotential dosetothegeneralpopulation throughreleasesfromthesteamgenerators, whenthereliefvalveshaveliftedafteraprimarytosecondary steamgenerator leak.TherewerenoreleasesthroughthisreleasepathduringthetimethatR-32wasconsidered inoperable.
Ifreliefvalveshadliftedduringthistime,thedurationofthereleaseandtheamountofactivityreleasedwouldhavebeendetermined fromdatafromseveralsources,including R-32.R-32data'wouldhavebeendiscovered tobeinconsistent withotherdata'tsuchatime,andwouldnotaffecttheaccuracyofreleasecalculations.
Basedontheabove,itcanbeconcluded thatthepublic'shealthandsafetywasassuredatalltimes.V.CORRECTIVE ACTIONA.ACTIONTAKENTORETURNAFFECTEDSYSTEMSTOPRE-EVENT NORMALSTATUS:oThecorrectvalueofthecalibration constantforR-32wasdetermined andeditedintotheR-32controlterminal, perCPI-MON-R31/R32.
oPT-17.5waschangedtoreflectthecorrectvalueofthecalibration constantandwasperformed toverifyoperability ofR-32.oAPPCSchannelcheckwasperformed toverifyoperability ofR-32.CoTheotherradiation channelscontrolled bytheSPINGCT-1controlterminalwereverifiedtohavethecorrectcalibration constants editedintothecontrolterminal.
HRCFORH366A(5-92)
NRCFORH366A(5-92)U.S.NUCLEARREGUULTORY CQBIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQGINO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCONPLYIIITHTHISIHFORHATION COLLECTION REQUEST:50.0HRS~FORIIARDCOHHEHTSREGARDIHG BURDENESTIHATETOTHEINFORHATION ANDRECORDSHANAGENENT BRANCH(HNBB7714),U.S.NUCLEARREGULATORY COHHISSIOH
~llASHINGTOH, DC20555-0001 ANDTOTHEPAPERNORK REDUCTION PROJECT(3140-0104),
OFFICEOFHANAGEHEHT AHDBUDGETMASHING'TOH DC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244LERNINBER6YEARSEQUENTIAL94--001--REVISION00~PAGE39OF9TEXT(lfmorespaceisrequired, useadditional copiesoiHRCForm366A)(17)B.ACTIONTAKENORPLANNEDTOPREVENTRECURRENCE-oProcedure CPI-MON-R31/R32 hasbeenrevisedtoprovideatolerance bandforacceptable valuesofthecalibration constant.
Thistolerance willbeexpressed inbothdecimalandscientific notation.
oCalibration procedures forotherchannelscontrolled byCT-1havebeenreviewed.
Procedures willberevisedtoprovidetheappropriate tolerance bandsforeditableparameters.
oTheimportance ofmakingcalculations correctly willbereemphasized toallI&Cpersonnel, including theconsequences ofincorrect results.VI.ADDITIONAL INFORMATION:
A.FAILEDCOMPONENTS:
NoneB.PREVIOUSLERsONSIMILAREVENTS:AsimilarLEReventhistorical searchwasconducted withthefollowing results:Nodocumentation ofsimilarLEReventswiththesamerootcauseatGinnaNuclearPowerPlantcouldbeidentified.
C.SPECIALCOMMENTS:
NoneNRCFORH366A(5-92) lI}}

Revision as of 11:58, 29 June 2018

LER 94-001-00:on 940119,Radition Monitor R-32 Declared Inoperable Due to Low Output by One Decade.Correct Value of Calibr Constant for R-32 Determined & Edited Into R-32 Control terminal.W/940217 Ltr
ML17263A542
Person / Time
Site: Ginna Constellation icon.png
Issue date: 02/17/1994
From: MECREDY R C, ST JOHN J T
ROCHESTER GAS & ELECTRIC CORP.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-94-001, LER-94-1, NUDOCS 9403010270
Download: ML17263A542 (13)
v • d • e


Text

ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9403010270 DOC.DATE:,94/02/17 NOTARIZED:

NOFACIL:50-244 RobertEmmetGinnaNuclearPlant,Unit1,Rochester GAUTH.NAMEAUTHORAFFILIATION STJOHN,J.T.

Rochester Gas&ElectricCorp.MECREDY,R.C.

Rochester Gas&ElectricCorp.RECIP.NAME RECIPIENT AFFILIATION DOCKET05000244

SUBJECT:

LER94-001-00:on 940119,Radition MonitorR-32declaredinoperable duetolowoutputbyonedecade.Correctvalueofcalo.brconstantforR-32determined

&editedintoR-32controlterminal.W/940217 ltr.DISTRIBUTION CODE:IE22TCOPIESRECEIVED:LTR JENCLiSIZE:C7TITLE:50.73/50.9 LicenseeEventReport(LER),IncidentRpt,etc.DSNOTES:License Expdateinaccordance with10CFR2,2.109(9/19/72).

05000244DRECIPIENT IDCODE/NAME PD1-3PDINTERNAL:

AEOD/DOAAEOD/ROAB/DS PNRR/DE/EMEB NRR/DRCH/HHFB NRR/DRCH/HOLB NRR/DRSS/PRPB NRR/DSSA/SRXB RES/DSIR/EIBEXTERNALEG&GBRYCE~J~HNRCPDRNSICPOORE,W.COPIESRECIPIENT LTTRENCLIDCODE/NAME 11JOHNSON,A 1AEOD/DSP/TPAB 2NRR/DE/EELB 1NRR/DORS/OEAB 1NRR/DRCH/HICB 1NRR/DRIL/RPEB 2DSSA.SPLB1REGILE021RGB=FILE0122LSTLOBBYWARD11NSICMURPHY,G.A 11NUDOCSFULLTXTCOPIESLTTRENCL111111-1111111111111111.11DRDNOTETOALL"RIDS"RECIPIENTS:

PLEASEHELPUSTOREDUCEWASTE!CONTACTTHEDOCUMENTCONTROLDESK,ROOMPl-37(EXT.20079)TOELIMINATE YOURNAMEFROMDISTRIBUTION LISTSFORDOCUMENTS YOUDON'TNEED!ADDSFULLTEXTCONVERSION REQUIREDTOTALNUMBEROFCOPIESREQUIRED:

LTTR27ENCL27 ROCHESTER GASANDELECTRICCORPORATION

~89EASTAVENUE,ROCHESTER N.Y.14649.0001 SeenSrnrtROBERTCMECREDY,VicePresidenl OlnneNuclearProduction February17,1994TELEPHONE AREACODET165462700U.S.NuclearRegulatory Commission DocumentControlDeskAttn:AllenR.JohnsonProjectDirectorate I-3Washington, D.C.20555

Subject:

LER94-001,Radiation MonitorR-32("B"MainSteamLine)Inoperable, DuetoPersonnel Error,CausesaCondition Prohibited byPlantTechnical Specifications R.E.GinnaNuclearPowerPlantDocketNo.50-244Inaccordance with10CFR50.73,LicenseeEventReportSystem,item(a)(2)(i)(B),whichrequiresareportof,"Anyoperation orcondition prohibited bytheplant'sTechnical Specifications",

theattachedLicenseeEventReportLER94-001isherebysubmitted.

Thiseventhasinnowayaffectedthepublic'shealthandsafety.Verytrulyyours,C~RobertC.Mecredyxc:U.S.NuclearRegulatory Commission RegionI475Allendale RoadKingofPrussia,PA19406GinnaSeniorResidentInspector 9403010270 940217PDRADOCK05000244SPDR NRCFORH366(5-92)~~U.SNUCLEARREGULATORY COINIISSION APPROVEDBY(NNINO.3150-0104 EXPIRES5/31/95LICENSEEEVENTREPORT(LER)(Seereverseforrequirednurherofdigits/characters foreachblock)ESTIHATED BURDENPERRESPONSETOCOHPLYIIITHTHISINFORHATION COLLECTIOH REQUEST:50,0HRS.FORNARDCOHMEHTSREGARDING BURDENESTIHATETOTHEIHFORHATIOM ANDRECORDSMANAGEMENT BRANCH(HNBB7714),U.S.NUCLEARREGULATORY COHHISSIOM, NASHIHGTON, DC20555-0001, AMD'TOTHEPAPERMORK REDUCTION PROJECT(3150-0104),

OFFICEOFHANAGEHENT ANDBUDGETUASHINGTON DC20503.FAGILITYeua<<1)R.E.GinnaNuclearPowerPlantDOCKETNINBER(2)05000244PAGE(3)10F9TITLE(4)Radiation HonitorR-32("B"HainSteamLine)Inoperable, DuetoPersonnel Error,CausesaCondition Prohibited byPlantTechnical Specifications HONTHDAY0119OPERATING H(nE(9)POUERLEVEL<<10)TEAR94N097EVENTDATE5YEAR94REPORTDATE7I.ERNWSER6SEQUENTIAL HUHBERREVISIONHUHBERHOHTHDAYTEAR1794--001--,0002OTHERFACILITIES INVOLVED8FACILITYNAHEFACILITYHAHEDOCKETNUMBERDOCKETNUHBER20.402(b) 20.405(a)(l)(i)20.405(a)(1)(ii) 20.405(c) 50.36(c)(l) 50.36(c)(2) 50.73(a)(2)(iv) 50.73(a)(2)(v) 50.73(a)(2)(vii) 73.71(b)73.71(c)OTHERTHISREPORTISSUBHITTED PURSUANTTOTHEREQUIREHENTS OF10CFR:Checkoneormore1120.405(a)(1)(iii) 20.405(a)(1)(iv) 20'05(a)(1)(v) 5073(a)(2)('I) 50.73(a)(2)(ii) 50.73(a)(2)(iii)

LICENSEECONTACTFORTHISLER1250.73(a)(2)(viii)(A) 50.73(a)(2)(viii)(B) 50.73(a)(2)(x)

(SpecifyinAbstractbelowandinText,NRCForm366AHAMEJohnT.St.Hartin-Director, Operating Experience TELEPHONE NUHBER(IncludeAreaCode)(315)524.4446COMPLETEONELINEFOREACHCQIPONENT FAILUREDESCRIBED INTHISREPORT13CAUSESYSTEHCOMPOHEHT HAHUFACTURER REPORTABLE TONPRDSCAUSESYSTEHCOHPOMENT HAMUFACTURER REPORTABLE TOHPRDSSUPPLEMENTAL REPORTEXPECTED14YES(Ifyes,completeEXPECTEDSUBHISSIOM DATE).XNOEXPECTEDSUBHISSIONDATE(15)MONTHDAYYEARABSTRACT(Limitto1400spaces,i.e.,approximately 15single-spaced typewritten Lines)(16)OnJanuary19,1994,atapproximately 1330EST,withthereactoratapproximately 97gosteadystatepower,theoutputofthe"B"MainSteamLineRadiation MonitorR-32wasdiscovered tobelowbyonedecade.R-32wasdeclaredinoperable.

Investigation revealedthatacalibration constantwasincorrectly documented duetoatransposition error,andthe'incorrect valuewaseditedintotheR-32controlterminal.

Immediate corrective actionwastoeditthecorrectvalueofthecalibration constantintoR-32.ThisrestoredtheoutputofR-32tothecorrectrange,andR-32wasdeclaredoperable.

(ThiseventisNUREG-1022 (A)causecode.)Corrective actiontoprecluderepetition isoutlinedinSectionV(B).ThisLERmeetstherequirements ofaSpecialReportrequiredbytheGinnaTechnical Specifications.

NRCFORM366(5-92)

NRCFORM366A(5-92)U.S.NUCLEARREGULATORY COIIISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQGINO.3150-0104 EXPIRES5/31/95ESTIMATED BURDENPERRESPONSETOCOMPLYllITHTHISINFORMATION COLLECTIOM REQUEST:50.0HRS.,FORNARDCOMMENTSREGARDIHG,BURDEN ESTIMATETOTHEIHFORNATIOH AMDRECORDSNAMAGEHENT BRANCH(NNBB7714),U.S.NUCLEARREGULATORY CONNISSIOM, llASHIHGTOM, DC20555-0001 ANDTOTHEPAPERNORK REDUCTIOH PROJECT(31(0.0104),

OFFICEOFMANAGEMENT ANDBUDGET.NASHINGTON DC20503.FACILITYMANE1R.E.GinnaNuclearPowerPlantDOCKETNINBER2YEAR0500024494LERHLNSER6SEQUENTIAL

--001--REVISION00PAGE32OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)I.PRE-EVENT PLANTCONDITIONS Thereactorwasatapproximately 97>steadystatereactorpower.Anengineerwasreviewing aprintoutfromthecontrolterminalfortheUBUMainSteamLineRadiation Monitor(R-32).Thisreviewwasbeingdoneaspartofresearchforaplannedmodification.

Thescopeofthemodification istoreplacethestandbyrecorderformainsteam.lineradiation levels(recorder RK-47A)withcontinuous indication oftheseradiation levelsintheControlRoom.II.DESCRIPTION OFEVENTA.DATESANDAPPROXIMATE TIMESOFMAJOROCCURRENCES:

oOctober7,1993:,R-32calibrated perCPI-MON-R31/R32.

Thevalueofthecalibration constantisincorrectly transposed andeditedintotheR-32controlterminal.

(Eventdate)oOctober7,1993:Procedure PT-17.5changedtoreflectthetolerance bandofoutputreadingsforR-32,basedonthecalibration constanteditedintotheR-32terminal.

PT-17.5performed toverifyoperability ofR-'32.oJanuary19,1994,1330EST:Discovery dateandtime.oJanuary19,1994,1547EST:Thecorrectvalueofthecalibration constantforR-32isdetermined andeditedintotheR-32controlterminal, perCPI-MON-R31/R32.

R-32restoredtooperablestatus.HRCFORM366A(5.92)

NRCFORH366A(5-92)U.SNUCLEARREGULATORY CQtllSSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBY(RNNO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCOMPLYWITHTHISINFORHATION COLLECTION REQUEST:50.0HRS.FORWARDCOHMENTSREGARDING BURDENESTIHATETOTHEINFORHATION ANDRECORDSHANAGEHENT BRANCH(HNBB7714),U.S.NUCLEARREGULATORY COMMISSION/

WASHINGTON, DC20555-0001 ANDTOTHEPAPERWORK REDUCTION PROJECT(3130-0104),

OFFICEOFHANAGEMENT ANDBUDGETWASHINGTON DC20503.FACILITYNAME1R.E.GinnaNuclearPowerPlantDOCKETNEER2YEAR0500024494--001--00LERNNBER6SEQUENTIAL REVISIONPAGE33OF9TEXT(Ifmorespaceisrequired, useadditionaL copiesofNRCForm366A)(17)B.EVENTPTheannualcalibration ofthe"B"MainSteamLineRadiation Monitor(R-32)wascompleted onOctober7,1993,inaccordance withcalibration procedure CPI-MON-R31/R32, "Calibration ofDAM-3SteamLineRadiation MonitorsR31andR32".Aspartofthecalibration, theInstrument andControl(I&C)-technician calculates acalibration

constant, basedonactualdetectorsensitivity andsourcestrength.

Aftercompletion ofthecalibration, thetechnician theneditsthenewvalueintothecontrolterminal(SPINGCT-1)forR-32(unit04,channel02oftheSPINGCT-1).(The'SPING CT-1controlsvariousradiation monitorchannelsthroughout theplant.)Thecalibration constantisan"editable parameter",

andisusedtoconvertcountsperminute(CPM)fromthedetectorintoreadingsofmilliremperhour(mr/hr).Whenthereadingreaches0.1mr/hr,recorderRK-47AintheControlRoomisactivated, andbeginsrecording.

Whenthecalibration constantwascalculated (onOctober7,1993),theI&Ctechnician misplaced thedecimalpointwhiletransposing thecalculated valuefromdecimalnotationtoscien-tificnotation.,

Consequently, anincorrect poweroften(onedecadetoolow)wasrecordedontheprocedure datasheetandeditedintotheR-32controlterminal.

(Thedecimalreadingwascorrectly calculated as"0.0197",

butwasincorrectly transposed anddocumented as1.97E-03insteadof1.97E-02.)'.Theparameter wastheneditedintotheR-32controlter'minal as1.97E-03.ISurveillance procedure PT-17.5-,

"HighRangeEffluentMonitorsR-12A,R-14A,R-15A,R-31,R-32",wasthenchangedbytheI&Ctechnician, onOctober7,1993,toreflectthetol'erance bandofoutputreadingsforR-32,basedonthenewvalueofthecalibration constant.

PT-17.5wasperformed, andthePlantProcessComputerSystem(PPCS)wascheckedtoconfirmthattheou'tputofR-32waswithinthePPCS"qualitycode"and"currentvalue"tolerances.

R-32wasthendeclaredoperablebytheControlRoomoperators.

NRCFORH366A(5-92)

HRCFORM366A(592)USNUCLEARREGULATORY CQIIISSIOHLICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYOIBNO.3150-0104 EXPIRES5/31/95ESTIMATED BURDENPERRESPOHSETOCOMPLYWITHTHISINFORMATION COLLECTION REQUEST:50.0HRS.FORWARDCOMMENTSREGARDING BURDENESTIMATETOTHEINFORMATION ANDRECORDSMANAGEHEHT BRANCH(MNBB7714),U.S.NUCLEARREGULATORY COMMISSIOHi WASHINGTON, DC20555-0001 AHDTOTHEPAPERWORK REDUCTION PROJECT(31400104),OFFICEOFMANAGEMENT AHDBUDGETWASHINGTON DC20503.FACILITYNAKE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244YEAR94--001--00LERNNBER6SEQUENTIALREVISIONPAGE34OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)PT-17.5wasperformed eachmonththereafter toverifytheoperabili;ty ofR-32.Dailychannelcheckswereperformed byControlRoomoperators toconfirm*the PPCSvalueswerestill"withintolerances.

OnJanuary19,1994,atapproximately 1330EST,withthereactoratapproximately 974steadystatereactorpower,anengineerwasreviewing aprintoutfromtheCT-1controlterminal.

Thisreviewwasbeingdoneaspartofresearchforaplannedmodification.

Thescopeofthemodification istoreplacestandbyrecorderRK-47Awithcontinuous indication ofmainsteamlineradiation levelsintheControlRoom.Theengineercalcu-latedthecalibration constants, and,basedonhisknowledge ofthesystem,observedthattheconstantbeingusedinR-32wasnotwithinallowable systemparameters.

Furtherinvestigation revealedthatthisinconsistent valuewascausedby.thetransposition errordiscussed above.?TheengineernotifiedtheI&Cgroupofhisdiscovery.

I&Cconcurred withtheengineer.

Theynotify':ed theControlRoomoperators thatR-32had'anincorrect calibration constantandthattheoutputwasonedecadetoolow.TheControlRoomoperators evaluated thisinformation, andformallydeclaredR-32inoperable atapproximately 1430ESTonJanuary19,1993.Thecorrectvalueofthecalibration constantwaseditedintotheR-32controlterminal, perCPI-MON-R31/R32.

PT-17.5.waschangedtoreflectthedataforthecorrected valueofthecalibration constantandwasperformed toverifytheoperability ofR-32.TheControlRoomoperators checkedthePPCS,andconfirmed thattheoutputwaswithinthePPCStolerances.'-32 wasdeclaredoperable, andreturnedtoserviceatapproximately 1547EST,January19,1994.C.INOPERABLE STRUCTURES iCOMPONENTS IORSYSTEMSTHATCONTRIBUTEDTOTHEEVENT:NoneD.OTHERSYSTEMSORSECONDARY FUNCTIONS AFFECTED:

NoneNRCFORM366A(5-92)

NRCFORH366A(5-92)US.NUCLEARREGULATORY COHIISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQlBNO3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCOMPLYUITHTHISINFORNATION COLLECTIOH REOUEST:50.0HRS.FORIIARDCOHHEHTSREGARDIHG BURDENESTINATETOTHEINFORHATION ANDRECORDSNANAGEHENT BRANCH(NHBB7714),U.S.NUCLEARREGULATORY CONHISSION, MASHIHGTOH, DC20555-0001 AHDTOTHEPAPERIQRK REDUCTION PROJECT(3110-0104),

OFFICEOFNANAGEHEHT ANDBUDGETNASHINGTOH DC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244YEAR94--001--00LERNINBER6SEOUENTIALREVISIONPAGE35OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)E.METHODOFDISCOVERY:

Thiseventwasidentified byanengineer, whoreviewedaprintoutfromtheCT-1controlterminalaspartofresearchforaplannedmodification toreplacestandbyrecorderRK-47Awithcontinuous indication intheControlRoom.Theengineerobservedthatthecalibration constantbeingusedwasnotwithinallowable systemparameters.

F.OPERATORACTION:'TheControlRoomoperators werenotifiedofthisevent,anddeclaredR-32inoperable.,

Subsequently, theControlRoomoperators notifiedhighersupervision andtheNRC.R-32wasdeclaredoperableafterthecorrectcalibration constantwaseditedintotheR-32controlterminal, PT-17.5was,satisfactorily completed, andPPCSchannelchecksofR-32wereperformed.

G.SAFETYSYSTEMRESPONSE:

NoneIII.CAUSEOFEVENTA.IMMEDIATE CAUSE:Theimmediate causeofR-32beingconsidered tobeinoperable wasthattheoutputofR-32wasdiscovered tobelowbyonedecade,suchthatR-32wouldhaveactivated theRK-47Arecorderatapproximately 1mr/hrinsteadofthedesignvalueof0.1mr/hr.B.INTERMEDIATE CAUSE:,Theintermediate causeofthelowoutputofR-32wasthatthevalueofthecalibration constantwastransposed incorrectly whenchangingthevaluefromdecimalnotationtoscientific notation.

HRCFORH366A(5-92)

NRCFORN366A(5-92)U.S.NUCLEARREGULATORY CIBIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQGINO.3150-0104 EXPIRES5/31/95ESTINATED BURDENPERRESPONSETOCOHPLYNITHTHISINFORNATION COLLECTION REQUEST:50.0HRS.FORNARDCOHNEHTSREGARDING BURDENESTINATETOTHEIHFORHATIOH ANDRECORDSNANAGENENT BRAHCH(HNBB7714),U.S.NUCLEARREGULATORY CONHISSIOH

~NASNINGTOH, DC205550001AHDTOTHEPAPERWORK REDUCTION PROJECT(3140-0104),

OFFICEOFNANAGEMEHT ANDBUDGETNASHINGTON DC20503.FACILITYNANE1R.E.GinnaNuclearPowerPlantDOCKETNIMBER205000244YEAR94LERNINBER6SEQUEHTIAL

--001--REVISIOHM00PAGE36OF9iTEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)C.ROOTCAUSE:Theunderlying causeofthetransposition errorwasapersonnel errorbyanI&Ctechnician.

Thiswasacognitive personnel errorandwasnotcontrarytothecalibration procedure being.used.Therewerenounusualcharacteristics oftheworklocationwhichcontributed totheerror.(ThiseventisNUREG-1022(A)causecode,Personnel Error.)IV.ANALYSISOFEVENT:Thiseventisreportable inaccordance with10CFR50.73,LicenseeEventReportSystem,item(a)(2)(i)(B),whichrequiresareportof,"Anyoperation orcondition prohibited bytheplant'sTechnical Specifications".

TheoutputofR-32beingonedecadetoolow.resulted inR-32beingconsidered inoperable.

Sincethiscondition existedsinceOctober7,1993,andwasnotdiscovered untilJanuary19,1994,R-32wasinoperable formorethanseven.days.Thisisacondition prohibited bytheGinnaTechnical Specifications (TS).oSpecification 3.5.4states:Theradiation accidentmonitoring instrumentation channelsshowninTable3.5-6shallbeoperable,-.whenever thereactorisatorabove'otshutdown.

Withoneor"moreradiation monitoring channelsinoperable, taketheactionshowninTable3.5-6.Startupmaycommenceorcontinueconsistent withtheactionstatement.

oActionstatements fromTable3.5-6states:WiththenumberofoperablechannelslessthanrequiredbytheMinimumChannelsOperablerequirements, eitherrestoretheinoperable channel(s) tooperablestatuswithin7daysoftheevent,orprepare,and submitaSpecialReporttotheCommission within30daysfollowing theevent.outlining theaction'.taken, thecauseoftheinoperability andtheplansandscheduleforrestoring thesystemtooperablestatus.HRCFORN366A(5-92)

NRCFORH366A(5-92)U.S.NUCLEARREGULATORY COWISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQNINO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCOHPLYNITHTHISIHFORHATIOH COLLECTIOHREQUEST:50.0HRS.FORNARDCONHEHTSREGARDIHGBURDENESTIHATETOTHEINFORHATIOH ANDRECORDSHAHAGEHEHT BRANCH(HHBB7714),U.S.NUCLEARREGULATORY CONHISSIOH, NASHIHGTON, DC20555-0001, ANDTOTHEPAPERNORK REDUCTION PROJECT(3150-0104),

OFFICEOFHAHAGENENT ANDBUDGETNASHINGTON DC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNINIBER20500024494--001--00LERNINBER6YEARSEQUENTIAL REVISIONPAGE37OF9TEXT(Ifmorespaceisrequired, useadditional copiesofNRCForm366A)(17)The"B<<MainSteamLineRadiation Monitor(R-32)inoperability wasnotdiscovered untilJanuary19,1994.Therefore, thecondition wasnotrecognized atthetimeaSpecialReportwouldhavebeenrequired.

Consequently, aSpecialReportwasnotsubmitted within30daysfollowing theeventonOctober7,1993.Anassessment wasperformed considering boththesafetyconsequences andimplications ofthiseventwiththefollowing resultsandconclusions:

Therewerenooperational orsafetyconsequences orimplications attributed toR-32beinginoperable forgreaterthansevendays,becauseR-32wasstillfunctioning andcapableofresponding toradiation levelsat104oftheTSlimits,insteadofthedesired14ofTSlimits.Becausethesetpointisveryconservative tobeginwith,theonedecadeerrorinthecalibration constantstillallowedthesystemtorespondwellwithintheTSlimits.ThedesignforR-32isthatwhentheoutputreaches0.1mr/hr,recorderRK-47Aactivates toprovideindication andrecording ofR-32intheControlRoom.R-32was.functioning correctly, butduetothistransposition error,theoutputwasinerrorlowbyonedecade.(ThedetectorforR-32continued tofunctionasdesigned, andcontinued todetectandmonitorradioactivity.

Thedetectoroutput,asmeasuredinCPMwasstill,correct.However,the.outputreading,"

as'expressed inmr/hr,wa'sone'ecade toolow.)Therefore, theRK-47ArecorderintheControlRoomwouldnothaveactivated untiltheactualradiation reached1mr/hr(onedecadehigherthandesired).

Thiscorresponds toareleaseconcentration ofapproximately 1E-02microcuries percubiccentimeter (uCi/cc)noblegasesorareleaserateofapproximately 1.33E-02curiesper'econd(Ci/sec).

Notethatthe"instantaneous" TSlimitforareleaseratefromthelocationwouldbesimilartotheAirEjectoror1.42E-01Ci/sec.Theerrorbeforetherecorderstartedwouldrepresent 104oftheTSlimit,ratherthan1%whenthecorrectcalibration constantisused.NRCFORI4366A(5.92)

NRCFORH366A(5-92)U.S.NUCLEARREGULATORY COIIISSION LICENSEEEVENTREPORT(LER)TEXTCONTINUATION

'PPROVEDBY(NBNO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCONPLYIJITHTHISINFORHATIOH COLLECTIOH REQUEST:50.0HRS.FORIIARDCOHHEHTSREGARDIHG BURDENESTINATETOTHEIHFORHATION AHDRECORDSNANAGEHENT BRANCH(NHBB7714),U.S.NUCLEARREGULATORY CONHISSIOH, IIASHIHGTON, DC20555-0001 ANDTOTHEPAPERNORK REDUCTION PROJECT(3140-0104),

OFFICEOFHANAGEHENT ANDBUDGETIIASHINGTON DC20503.FACILITYlONE1R.E.GinnaNuclearPowerPlantDOCKETNINBER205000244YEAR94LERNINBER6SEQUENTIAL

--001-REVISION00PAGE38OF9TEXT(Ifmorespaceisrequired, useadditional copiesofHRCForm366A)(17)ThereleasepaththatR-32monitorsismainsteamreliefvalvedischarge.

R-32readingsareusedtodetermine thepotential dosetothegeneralpopulation throughreleasesfromthesteamgenerators, whenthereliefvalveshaveliftedafteraprimarytosecondary steamgenerator leak.TherewerenoreleasesthroughthisreleasepathduringthetimethatR-32wasconsidered inoperable.

Ifreliefvalveshadliftedduringthistime,thedurationofthereleaseandtheamountofactivityreleasedwouldhavebeendetermined fromdatafromseveralsources,including R-32.R-32data'wouldhavebeendiscovered tobeinconsistent withotherdata'tsuchatime,andwouldnotaffecttheaccuracyofreleasecalculations.

Basedontheabove,itcanbeconcluded thatthepublic'shealthandsafetywasassuredatalltimes.V.CORRECTIVE ACTIONA.ACTIONTAKENTORETURNAFFECTEDSYSTEMSTOPRE-EVENT NORMALSTATUS:oThecorrectvalueofthecalibration constantforR-32wasdetermined andeditedintotheR-32controlterminal, perCPI-MON-R31/R32.

oPT-17.5waschangedtoreflectthecorrectvalueofthecalibration constantandwasperformed toverifyoperability ofR-32.oAPPCSchannelcheckwasperformed toverifyoperability ofR-32.CoTheotherradiation channelscontrolled bytheSPINGCT-1controlterminalwereverifiedtohavethecorrectcalibration constants editedintothecontrolterminal.

HRCFORH366A(5-92)

NRCFORH366A(5-92)U.S.NUCLEARREGUULTORY CQBIISSIONLICENSEEEVENTREPORT(LER)TEXTCONTINUATION APPROVEDBYQGINO.3150-0104 EXPIRES5/31/95ESTIHATED BURDENPERRESPONSETOCONPLYIIITHTHISIHFORHATION COLLECTION REQUEST:50.0HRS~FORIIARDCOHHEHTSREGARDIHG BURDENESTIHATETOTHEINFORHATION ANDRECORDSHANAGENENT BRANCH(HNBB7714),U.S.NUCLEARREGULATORY COHHISSIOH

~llASHINGTOH, DC20555-0001 ANDTOTHEPAPERNORK REDUCTION PROJECT(3140-0104),

OFFICEOFHANAGEHEHT AHDBUDGETMASHING'TOH DC20503.FACILITYNAHE1R.E.GinnaNuclearPowerPlantDOCKETNNBER205000244LERNINBER6YEARSEQUENTIAL94--001--REVISION00~PAGE39OF9TEXT(lfmorespaceisrequired, useadditional copiesoiHRCForm366A)(17)B.ACTIONTAKENORPLANNEDTOPREVENTRECURRENCE-oProcedure CPI-MON-R31/R32 hasbeenrevisedtoprovideatolerance bandforacceptable valuesofthecalibration constant.

Thistolerance willbeexpressed inbothdecimalandscientific notation.

oCalibration procedures forotherchannelscontrolled byCT-1havebeenreviewed.

Procedures willberevisedtoprovidetheappropriate tolerance bandsforeditableparameters.

oTheimportance ofmakingcalculations correctly willbereemphasized toallI&Cpersonnel, including theconsequences ofincorrect results.VI.ADDITIONAL INFORMATION:

A.FAILEDCOMPONENTS:

NoneB.PREVIOUSLERsONSIMILAREVENTS:AsimilarLEReventhistorical searchwasconducted withthefollowing results:Nodocumentation ofsimilarLEReventswiththesamerootcauseatGinnaNuclearPowerPlantcouldbeidentified.

C.SPECIALCOMMENTS:

NoneNRCFORH366A(5-92) lI

Retrieved from "https://kanterella.com/w/index.php?title=ML17263A542&oldid=742955"