ML18038A154
| ML18038A154 | |
| Person / Time | |
|---|---|
| Site: | Nine Mile Point  |
| Issue date: | 04/15/1986 |
| From: | LEMPGES T E NIAGARA MOHAWK POWER CORP. |
| To: | ADENSAM E G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML17055B512 | List: |
| References | |
| CON-IIT07-444-91, CON-IIT07-446-91, CON-IIT07-447-91, CON-IIT7-444-91, CON-IIT7-446-91, CON-IIT7-447-91 (NMP2L-0687), (NMP2L-687), GL-83-28, NUREG-1455, NUDOCS 8604280262 | |
| Download: ML18038A154 (206) | |
Text
7NIAGARAVMOHAWKNIAGARAMOHAWKPOWER'CORPORATION/300ERIEBOULEVARDWEST,SYRACUSE,N.Y.13202/TELEPHONE(315)474-1511Apri115,1986(NMP2L0687)Ms.ElinorG.Adensam,DirectorBWRProjectDirectorateNo.3U.S.NuclearRegulatoryCommission7920NorfolkAvenueWashington,DC20555
DearMs.Adensam:
Re:NineMilePointUnit2DocketNo.50-410+/5~AttachedistheNiagaraMohawkPowerCorporation'sNineMile,PointUnit,2responsetoGenericLetter83-28whichconcernsthe"RequiredAct"ionsBasedonGenericImplicationsofSalemATWSEvents.."Thisletter-,supersedes.thepreviousresponsessenttotheNuclearRegulatoryCommissiononApril10,1984(G.K.Rhode(NMPC)toA.Schwencer(NRC)),andonDecember"20;1985(T.E.Lempgestoyou).Thisresponsedoe-snotcontradictthepreviousresponses,butdoes..augmentprevious.,statements.Itispresentedhere-intotalforourmutualconvenience.'a'<~aThisresponse'lsoaddressestheletter.fromM.Maughey.(NRC),to,'.G.Mooten(NMPC)datedMarch20,1986,concerningarequestforadditionalinformati'ononthissubject.Verytrulyyours,v~~VicePresidentNuclearGenerationAttachments"l~xc:R.A.Gramm,'RCResidentInspectorProjectFile(2')
P/lA!>>'l~~~'ai~1kJft4~.f&J'1A,l1;,i)c)>>t<atfCQPl)ljtimb)j~k'96ky~>I'L1fr'*.~~~~J~r-".s+~i/~fl:I.,"~,IDJ,~'IPJltajI~(blI:l1~"J,'t 7'IAGARAUMQHAlNKNIAGARAMOMAWKPOWERCORPORATION/300ERIEBOULEVARDWEST.SYRACUSE.N.Y.13202/TELEPHONE(31S)4T4.1311April15,1986(NMP2L068T)Ms.ElinorG.Adensam,DirectorBWRProjectDirectorateNo.3U.S.NuclearRegulatoryCommission7920NorfolkAvenueWashington,DC20555
DearMs.Adensam:
Re:NineMilePointUnit2DocketNo.50-410AttachedistheNiagaraMohawkPowerCorporation'sNineMilePointUnit2responsetoGenericLetter83-28whichconcernsthe"RequiredActionsBasedonGeneric,ImplicationsofSalemATWSEvents."ThislettersupersedesthepreviousresponsessenttotheNuclearRegulatoryCommissiononApril10,1984(G.K.Rhode(NMPC)toA.Schwencer(NRC)),andonDecember20,1985(T.E.Lempgestoyou).Thisresponsedoesnotcontradictthepreviousresponses,butdoesaugmen'tpreviousstatements.Itispresentedhereintotalforourmutualconvenience.ThisresponsealsoaddressestheletterfromM.Haughey(NRC)toB.G.Hooten(NMPC)datedMarch20,1986,concerningarequestforadditionalinformationonthissubject.Verytrulyyours,VicePresidentNuclearGenerationAttachmentsxc:R.A.Gramm,NRCResidentInspectorProjectFile(2) t)~'1'lO~"l"Il1p'f,9.inc.',c,".9,.c.~lgallg)iz',2)Ad,ir.8gfrng;fj,v,,',;sw,"9AJi'3'".8r6.'9fL'59J(Q~92;i92rOQ29"'~<-'"-'ib9:t"9l'2"26.>9'iY~i~+~..~v'J-r9+'iIibQ',iJ<U'v<'ii9i,'rj.29'ir'vb9g"~O'>9$<Aygq29O'9il+6?ivl'>>I'.li,4iv;i&l~i]t~9vVvvvOb<(r,(lf,"9',U4"'J~'r'i'-'?8:i.A'-r+!'."-"L..QPs-3"?."."At4H..0'JA5ffP~iPI".:.'."'-'jf'i'V~',JVJAf'6."A:6NO".".',:lvfi9".:OP'",','ll'-"..'~""'.9l9flb9Jrtc."d-,~2pg)-cAf9'9'>V9:'i9027!S~-'9:'1<.r.9r%CtA;3A'f"l'~:rr.'cDrtf,~."93'c.<O4~l~!O';AO$28F-;;)"6-,rtv.t-~<'CC:p>"t.r-'Ritv","(~~?9',:iiiO"'0>rr'OA2eR-CA6-lO'.".":OqVC.AO.'lr5lAEPf.O'.Jti:ll29>0l.~~'Apii'ppl"f'O2i2-trJbg'lRRO.G:,'C':AfiOJ'rO,"'4~'>'!VJ2O2VI9iY9:IYt9Sr.'r6lAR....-.OfiO'.,'I,-'.",.'V'P;.'-~t2v-"elci:'v3i9f.".2292'iJfi,9f'v~9""r>;.i)5rpc'I9("rG'",c9Q3'.9~6'>3'.t11ffitvb0~re.-,frv.",f..~i,iJJA"Dg't5$3r3lbOf".'Oii.i~".-iOt"VIV'Qv,QlvP'ig~v"r'629r'.'c..12iU?Or."v"v>r.'9NflOf("II,)g()igl~vv')lv09kivvv~"r~~'-iBO~viv-%l.p~r~~'.O~25'72fvivcir~9'VVVbV,O'.Q..rliQQ7Of4:>>'2wiN'i'~c-.i~2Cr'Vr".iit'rei..='?)c0~6,Qf~,98t,~r~.iC".:'V'I~~qC'.Q(i.'!?'-'"l'PO:fta'2f,A',fP.29htrZ"~~>-90':f'9"::v9'tf;llDAS'-RTI<2cll("ti"~9"'t:c,CPiy;gfHillsVII2-".,rLN Preface,Throughout,thisdocumentarereferencestoNMPCorSWECprocedures.Exceptasspecifiedintheresponse,theseproceduresarea'ttachedtothisletter(listedbelow)andareincludedtofacilitateNRC'sreviewofthisdocument..Theseproceduresare,andmustbe"livingdocuments"thatwillundoubtedlyberevisedinthefuture.Their"inclusionheredoesnotconstituteanycommi,tmentbyNMPCorSWECtomaintaintheseproceduresverbatimaspresentedhere.However,NMPCdoescommi*ttomaintainingcompliancewiththe-intentofGenericLetter83-28asspecifiedherein.Enclosures¹1AP-1.1--Enclosures¹2AP-1.2Enclosures¹3~AP-1.3Enclosures¹4AP-2--.Enclosures¹5,AP-3;-4.1Enclosures¹6AP-3.4.2Enclosures¹7.AP-4.0Enclosures¹8AP-5.0Enclosures¹9AP-6.1Enclosures¹10AP-10.1Enclosures¹11TDP-5CompositionandRespo'nsibili'tyofSiteOrganizationCompositionandResponsibilityofUnitOrganizationPersonnelResponsibilitiesa'ndAuthorityProductionandControlofProceduresAdministrationofTechnicalandSafetyReviews-SiteOperationsReviewCommitteeOperationsExperienceAssessmentAdministrationofOperationsProcedureforRepairProcedureforModificationandAddition-Unit2(Draft)Manag'ement'ofStationRecordsAdministrationofOperationalEngineeringAssessment'temsEnclosures¹12TDP-6Enclosures¹13TDP-8Enclosures¹14TDP-9Enclosures¹15NTP-10NuclearPlantReliabilityDataSystem(NPRDS)FailureReportingPost-MaintenanceTestingCriteriaIndependentSafetyEngineeringGroupTraining&LicensedOperatorCandidatesEnclosures¹16NTP-llLicensedOperatorRetrainingEnclosures¹17N2-IOP-101AEnclosures¹18N2-RAP-6PlantStartupPostReactorScramAnalysisandEvaluation
<g'~ik>>>'"I['I't'P."-'"k"i-""'>'-'i"C:>"~"":tPigiV"331"C'-.@Span.;4~'4}(4gt*,V~V<6F+j~IpC'IC4~10S,"&'>~':993'".:>')tl-'O"War.t~O~y,"'-!t-;.fS6'A:-ir:r~:<'-".S-..c->'gpomme'q~a4~~Ig14Vm344+I44tl'lVipDCQ:~a~"Sl"tr.'r~e!MqS,pP~,inc.i:".'.)rtZ>(lS~'9"'r'O',IS'd.aih<l.,q>,'g"n'Ca<~>~a"~'.40-->'i-r'Ir4~wggSgrK>4g(fg~~-,hPig;4T'(4')cPIg4Tgt10 Enclosures¹19SNECProcedureMethod.forHandling.-SupplierTechnicalPP-81DocumentsEnclosures¹20NEL-014.GEnclosures¹21SNECProcedureC-3ControlandDistribution'ofVendors'DocumentsEquipmentIdentificationCodes'.Enclosures¹22SHECProcedureProjectSpecificationandProcurementPP-3ProceduresEnclosures¹23SNECProcedureReviewofchangesand.theireffect'onPP-94Environmental/Mechanical/Seismi'c/HydrodnamicQualificationofEquipmentEnclosures¹24'-MI-GEN-'002MaintenanceInstructionsforHriting,ProceduresEnclosures¹25MI-4.0MaintenanceInstructionsfor'eviewandImplementationofTechnicalRequirementsinMaintenanceProceduresEnclosures¹26S-IDP-POEnclosures¹27EngineeringAssuranceProcedure3.1OutlineforIECProceduresVerificationofNuclearPowerPlantDesignsEnclosures¹28INPOLetteronNUTACRecommendedEnhancements' IP.rNlfl>>gI<~Ag~c'jS,.)0~'."Q.RCl0 Section1.1GenericLetter83-28Post-TripReview(ProgramDescriptionandProcedure) 2>>(iV3Jl'T.-i<<>3zhp'Q~jt4'.>>ig)')'lH>>>t.".":.,j>",-'p,,"r"';<<~">'<<r.";qzjliQ3)Pg(<<i",'ql'<<Tigti)."3L'>I.>,"'iti3(,3<<".QtP-."<1it~Jg(90"<<~f)<'<g><<i9+<jj+'~oc<<'t,~'f(q"i.At<<J95vj>ni,'..',~:>'iH.>"">).)<<<<"j",'.9.'tbfIg'99t)'-'n'JA"'"t9~6?"'j9~9j'2'~"'0'tt.'3j>
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REUIREDACTIONSBASEDONGENERICIMPLICATIONSOFSALEMATNSEVENTSPOST-TRIPREVIEH(PROGRAMDESCRIPTIONANDPROCEDURE)'ositionLicenseesandapplicantsshalldescribetheirprogramforensuringthatunscheduledreactorshutdownsare.analyzedandthatadeterminationismadethattheplantcanberestartedsafely.Areportdescribingtheprogramforreviewand"analysisofsuchunscheduledreactorshutdownsshouldinclude,asaminimum:Thecriteriafordeterminingtheacceptabilityofrestart.NMP2ResonseNineMilePointUnit2'scriteriafordeterminingtheacceptabilityofrestartarecontainedinProcedureN2-RAP-6,PostReactorScramAnalsisandEvaluation,andin(Interim)OperatingProcedurebbdpriortostartup).N2-RAP-6providesarevieWandevaluationofspecificparametersassociatedwithaReactorScramfromall.operatingconditions'fafterthecompletionofthis'rocedure,thereisaconditionwhichisnotfullyunderstood,TheSiteOperationsReviewCommittee(SORC)mustreviewthisreportbeforetheStationSuperintendentcanauthorizearestart.IntheoperatingprocedureN2-IOP-101A,valveinstrumentation,systemandcomponentcheckoffsheetsmustbecompletedpriortoreactorstartup.Thesepre-startupcheckoffsheetsareusedtoensurethatallequipment,necessaryforsafeoperationisoperableinaccordancewithplantTechnicalSpecifications.ThisprocedurealsostatesthatN2-RAP-6mustbecompleted(followingaScram)priortorestart.TheAdministrativeProcedurewhichidentifiesthecriteriathattheStationSuperintendentwillusefordeterminingtheacceptabilityofrestartis,AP-4,Administrationof0erations.Section7.4ofthisprocedurewillbechangedtostateasfollows:7.47.4.17.4.2ThecriteriainwhichtheStationSuperintendentwillusefordeterminingtheacceptabilityofrestart,afteranunscheduledshutdown,shallbeasfollows:Theplantisshowntobeinasafecondition.ThecauseoftheeventiseitherunderstoodorSORChasreviewedandauthorizedarestart.
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(Cont'd)7.4.3Theneedforcorrectiveactionhasbeendeterminedandappropriatelyimplemented.7.4.4Theexpectedautomaticoperationofplantsafetyrelatedsystemshasbeenverified.Therefore,Unit2iscurrentlyincompliancewiththeintentofSection1.1.1.Theresponsibilitiesandauthoritiesofpersonnelwho.iillperformthereviewandanalysisoftheseevents.NMP2ResonseTheSuperintendentOperations,,StationShiftSupervisor,.ShiftTechnicalAdvisor,andTechnicalDepartmentpersonnelwillperformthePost-TripReviewanalysis,TheirdutiesarespecificallystatedinAdministrativeProceduresAP-1.2andAP-1.3,ComositionandResonsibilitofUnitOranizationandPersonnelResonsibilitieswhichisdirectlyresponsibleforthecompletionofN2-RAP-6,PostReactorScramAnalsisandEvaluationProcedure.,Thisprocedure,statesspecificallythat"theReactorAnalystDepartmentwill.bedirectlyresponsiblefordatagatheringandprocessevaluation.TheanalysiswillbecompletedbytheUnitReactorAnalystorSiteReactorAnalyst.Intheeventthatthoseindividualsareunavailable,theanalysiswillbeconductedbyaseniormemberofTechnicalServicesand/oroperations".TheirdutiesarealsosupportedbySiteAdministrativeProcedureAP-l.l,ComositionandResonsibilitofSiteOranization.Therefore,administrativecontrolswhichresponsibilitiesandauthorities.ofpersonnelPost-TripReviewmeettheintentofSection1.1.2.regulatetheevaluatingtheThenecessaryqualificationsandtrainingfortheresponsible.personnel.TheanalysisofunscheduledshutdownsatNineMilePointUnit2willbeperformedbyaselectgroupoftrainedandqualifiedindividuals.,TheindividualscurrentlyinthepositionsofSuperintendentOperations,SiteReactorAnalyst,UnitReactorAnalyst,andthe.StationShiftSupervisorsallhaveexperienceatthe,operatingfacilitiesatNineMilePointUnit1and/orJamesA.Fitzpatrick.Theeducation,training,andjobrelatedexperiencequalifythes'epeopletomakethePost-TripReviewandrestartrecommendation.
74~,&cc~'I'.a'~4-f>i~6':'3'J'i.~eC:';;ri~cri;;:!C~,",:.'~~OOc"iC'5"4'0"'~V"t'"'3flailh'i'<~I'~r"<f'07k'J"t'P.9c"c'g"JS~f'<'C(evAs~>.~<rJ-e~;.r.ziq6$$$bA,<,',.l,6~A-cAc>i"9c.',~~&+)'l~"'E (Cont'd)ThequalificationsandtrainingforthepositionsofStationSuperintendent,SuperintendentOperations,SiteReactorAnalystSupervisorandUnitReactorAnalystSupervisorcomplywiththerequirementsofANSI/ANS3.1-1978.Additionally,thecurrentsiteReactorAnalystSupervisorandtheUnitReactorAnalystSupervisorbothholdSeniorReactorOperatorlicensesatUnit2.TheStationShiftSupervisorsandShiftTechnicalAdvisorsalsowillmeetthequalificationrequirementsofANSI/ANS3.1-1978.TheShiftTechnicalAdvisormeetstheCommission'sPolicyStatementonengineeringexpertisedescribedin50FR43621.pdLicensed0eratorCandidatesandNTP-11,Licensed0erator~Retratnln.Theseproceduresformallyestablishtheprocedures,programs,responsibilitiesandrequirementsnecessaryforthequalificationsofNRCLicensedReactorOperatorsandSeniorOperators.atNineMilePoint2.Therefore,theexistingNineMilePointUnit2administrativecontrolscurrentlymeettheintentofSection1.1.3.Thesourcesofplantinformationnecessarytoconductthereviewandanalysis.Thesourcesofinformationshouldincludethemeasuresandequipmentthatprovidethenecessarydetailandtypeofinformationtoreconstructtheeventaccuratelyandinsufficientdetailforproperunderstanding.(SeeAction1.2)NMP2ResonseInformationnecessarytoconductthereviewandanalysisisavailable,totheresponsiblepersonnel,throughanumberofdifferentsources.Themainsourceofdatawillcomefrom,N2-RAP-6,PostReactorScramAnalsisandEvaluationProcedure.Thisprocedureisdesignedtoevaluatesystemperformancefromaninitiationorisolationstandpoint.Thedeterminationofsafetysysteminitiation,properflowpathsandsystemoperationwillbedoneusingposttriplogs,controlroominstrumentation,recorders,alarms,indicatinglights,andtheGeneralElectricTransientAnalysisRecordingSystem-(GETARS),aswellastheUnit2ProcessComputerSystem.ThesesystemsprovideOperatorswithessentialplantperformanceinformationthroughavarietyoflogs,trends,summaries,.anddatadisplays.Moreinformationonthesesystemsisprovidedinsection1.2(Post-TripReview-DataandInformationCapability).Themethodsandcriteriaforcomparingtheeventinformationwithknownorexpectedplantbehavior(e.g.,thatsafety-relatedequipmentoperatesasrequiredbytheTechnicalSpecificationsorotherperformancespecificationsrelatedtothesafetyfunction).
T~Qf:.f,'JUSPE.":'C'"fQbO'~'5"3S";",~',Cy"iver,en~~&(i'~"fi:limniP09Vc~BSCVQ."C'~>sal~agae (Cont'd)NMP2ResonseAsstatedinSection1.1.3,theindividualsresponsiblefortheeventanalysisarequalifiedperANSI/ANS3.1-1978andcurrentlyholdSeniorReactorOperatorlicenses(bothUnitandSiteReactorAnalysts).Attheirdisposalarerecordsofpreviousreactortrips(whenhistoryrecordsexist),TechnicalSpecifications,FinalSafetyAnalysisReportdata,andreloadlicensinganalyseswhichareusedattheirdiscretionforcomparingthetransienttoexpectedresponses.Thecriteriafordeterminingtheneedforindependentassessmentofanevent(e.g.,acaseinwhichthecauseoftheeventcannotbepositivelyidentified,acompetentgroupsuchastheSiteOperationsReviewCommittee,willbeconsultedpriortoauthorizingrestart)andguidelinesonthepreservationofphysicalevidence(bothhardwareandsoftware)tosupportindependentanalysisoftheevent.NMP2ResonseUnit2'scriteriafordeterminingtheneedforindependentassessmentiscontainedinReactorAnalysisProcedureN2-RAP-6,PostReactorScramAnalsisandEvaluation.Thisprocedurespecifically,states(ontheFinalAssessmentSheet)that"Ifthereisaconditionnotfullyunderstood,theStationSuperintendentshouldbesonotified,andtheappropriatestaffmemberscalledintoassistintheevaluation.Ifafterfurtherevaluationthescramisstillnotunderstood,SORCmustreviewthisreportbeforeauthorizationtorestart".Also,AP-3.4.1,AdministrationofTechnicalandSafetReviews(SORC)states:"ScramreportsneednotbereviewedbySORCpriortorestartunlessthecauseofthescramor'heplan'ttransientresponseisnotfullyunderstood.UndertheseconditionsSORCwillprovidetheindependentassessmentpergenericletter83-28Section1.1.6,andSORCapprovalisrequiredpriortorestart".Section1.1.1(ofthisresponse)statesspecificcriteriacontainedinAdministrativeProcedureAP-4whichtheStationSuperintendentmustfollowpriortoauthorizingarestart.Unit2'sprocedureestablishedtoassurethatallphysicalevidence(necessaryforanindependentassessment)ispreservedisAP-10.1,ManaementofStationRecords.Thisprocedureprovidesanoutlineforthecollection,storageandmaintenanceofsiterecordsandtechnicalinformation.ThisprocedurestatesthatallScramReportsandScramAnalysisdata(N2-RAP-6)remaininplantarchivesforthelifeoftheplant.Thisenablesoperatingpersonneltocompareeventinformationwithknownorexpectedplantbehavioratanytime.Therefore,theAdministrativeControlsprovideasystematicmethodtodeterminetheneedforindependentassessmentandNMP2meetstheintentofSection1.1.6.
t.9""alb~'8")~T')"';".'.".>'..s~I0'i)~g).4r.~p,g.~~~'IIgpss')sI))~'If)C.)))~OgI)/r""~<<..A'9"l'u;,<fav't:-'-'.~f;.=.ZS:r.f,if:.or:>O.-.;"~'f'C'b-.f~~)fItrI)Ir 1.1.7OursystematicsafetyassessmentprocedureswhichaddressesSection1.1Post-TripReview,areasfollows:SiteAdministrativeProceduresAP-1.1AP-1.2AP-1.3AP-3.4.1AP-4.0AP-10.1CompositionandResponsibilityofSiteOrganizationCompositionandResponsibilityofUnitOrganizationPersonnelResponsibilitiesandAuthorityAdministrationofTechnicalandSafetyReviews(SORC)AdministrationofOperationsManagementofStationRecordsNuclearTraininProceduresNTP-10NTP-llTrainingofLicensedOperatorCandidatesLicensedOperatorRetrainingReactorAnalstProcedureN2-RAP-6PostReactorScramAnalysisandEvaluation0eratinProcedureN2-IOP-101APlantStartupTheadministrativecontrolscurrentlybeingimplementedatNineMile-PointUnit2containproceduresanddatacollectionrequirementsrelatedtoPost-TripReview.Theserequirementsprovideassurancethatthecauseforunscheduledreactorshutdownisanalyzedandadeterminationmadeastothecausepriortoplantrestart.Inaddition,thegeneralresponseofsafetyrelatedequipmentisreviewedpriortoplantrestart.NineMilePointUnit2'sAdministrativeControlsadequatelyaddresses-Sections1.1onPost-TripReview.
IV~I Section1.2GenericLetter83-28Post-TripReview(DataandInformationCapability) r-1C~I\I~yl'~~~f/$~~t Section1.2Post-TriReview-DataandInformationCaabilitUnit2'sComputerequipmentwhichiscapableofrecording,recallinganddisplayingdataandinformationnecessarytodiagnosethecauseofunscheduledreactorshutdowns,iscomprisedofthreedifferentsystems:TheProcessComputerSystem,GeneralElectric'sTransientAnalysisRecordingSystem,andtheSafetyParameterDisplaySystem.Eachsystemworksindependentofoneanother,buthasmanyredundantdataIDpointswhichprovidecrucialinformationduringasystemfailure.ThefollowingthreesectionsdiscusseachsystemindetailandanserthequestionsgeneratedinGenericLetter83-28.
Section1.2AGenericLetter83-28Post-TripReview-DataandInformationCapabilityProcessComputerSystem(PCS) t1,hsLg~gyIl Capabilityforassessingsequencyofevents(on-offindications).Briefdescriptionofequipment(e.g.,plantcomputer,'edicatedcomputer,stripchart).NMP2ResonseTheProcessComputerinstalledatNineMilePointUnit2consistsofdualHoneywell4500C.P.U.'swiththeGeneralElectricProcessManagementSystem(PMS)softwarepackage.Eachprocessorcontains128KwordmemoryforcorestorageanddualportedAmpexlargecorestoresforbulkdevices.Inaddition,thesystemutilizesan80MBdiskdriveforadditionalstoragecapacity,andforback-upcapability.Twomagnetictapeunitsareutilizedforeitherhistoricalrecordingretentionorforback-upcapabilities.Forperipherals,thecomputerroomisequippedwithtwocolorgraphicvideos,twoinputkeyboards,twoinput/outputterminets,oneoutputonlyterminet,acardreader,andahighspeedlineprinter.Thecontrolroomisequippedwithfourcolorgraphicvideos,twoinputkeyboards,oneinput/outputterminet,twooutputterminets,sixtrendrecorders,andfivedigitaldisplays.AttachmentAcontainsalistofallthemaincontrolroomdedicatedstripcharts.Additionally,theremoteshutdownroomisequippedwithonecolorgraphicvideoandonekeyboard.Parametersmonitored.NMP2ResonseNiagaraMohawkhasreviewedtheTechnicalEvaluationReportof.October18,1985(fromN.R.ButlertoB.G.Hooten)pertainingtoPost-TripReviewCriteria.NineMilePoint2hasinvestigateditsSequenceofEventsandHistoricalRecordingparametersanddeterminedthatUnit2adequatelyaddressesthedigitalandanalogparametersspecifiedinthereport(Table1.2-2).Attachment1isacopyofallthesequenceofeventpointsthatexistonthesystemtodate.Therehasbeenaconsiderableamountofsparescreatedsothatpointsmaybeaddedinthefuture.Thesepointsreflecttrippointsassociatedwithelectricalbreakerstatus,waterlevels,reliefvalvepositions,IRMandAPRMupscalelevels,andtheNeutronMonitoringSystem.Timediscriminationbetweenevents.NMP2ResonseSOE(sequenceofevent)pointsarealarmedandrecordedonanautomaticinterruptdrivenbasisonachangeofstate.Temporalresolutionis4millisecondsbetweenevents.Eventsoccurringwithinthistimeperiodmaynotberecordedinsequence.
I%p*~~~<i~i4-~tL Formatfordisplayingdataandinformation.NMP2ResonseAttachment2isacopyofthe(SOE)logisprintedouttoarecording64contactchangeschange.EachchangeofstateterminetintheControlRoom:changedfrom1-60seconds.formatusedwhenasequenceofeventterminet.Thelogwillprintafteror30secondsafterfirstcontactwillalsobealarmedtothealarmThetimeperiodtoprintoutcanbeCapabilityforretentionofdataandinformation.NMP2ResonseRetentionofallsequenceofevent(SOE)dataiscontrolledbytheHistoricalRecordingSystem.TheHRR(HistoricalRecordingRetention)systemwillrecordallchangesofstateincludingSOEpoints.Thisdatacanthenberetrievedatanytimefromeitherthediskdriveorfrommagnetictapedependingonthetimeframe.Attachment3containsthedataformatviewedbytheuser.Thedistancebackintimeausermaygodepends.ontheretentioncycleofmagnetictapesused.ThedatacanbeprintedtoaterminetorviewedontheCRTscreen.NiagaraMohawkhasrevisedAdministrativeProcedureAP-10.1,ManaementofStationRecordstomeetthecommitmentofGenericLetter83-28thatScramReportsandScramAnalysisDatawillremainonsite(PlantArchives)forthelifeoftheplant.Powersource(s)(e.g.,ClasslE,non-ClasslE,noninterruptible).NMP2ResonsePowertotheUnit2ProcessComputerisprovidedbyanUninterruptiblePowerSupply2VBB-UPSlGNon-ClasslE.Thissupplyisfedfroma600Vpowerpanel2VBB-PNL301,whichissuppliedbyeithertheStationGenerator13.8KVline,(2NJS-US3,duringnormaloperation)orfromanoff-siteScriba115KVline(2NJS-US4,duringashutdowncondition).Theprocesscomputerisalsosuppliedbyanalternate600Vbus2NJS-US6.Intheconditionwhichallpowerislost,backuppowerissuppliedbya125VDCbatterysupply,2BYS-SNG001C.Insummary,uponlossofnormalpower,astatictransferswitchtransferspowerfromthenormalsourcetothealternativesource.Ifbothnormalandalternatesourcesarelost,theDCsourcewillautomaticallypickuptheloadsbymeansofaDCauctioneeringcircuit.Capabilityforassessingthetimehistoryofanalogvariablesneededtodeterminethecauseofunscheduledreactorshutdownsandthefunctioningofsafety-relatedequipment;".
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Briefdescriptionofequipment(e.g.,plantcomputer,dedicatedcomputer,stripcharts).NMP2ResonseAbriefdescriptionoftheequipmentcomprisingtheUnit2ProcessComputerwasgiveninSection1.2.1.1.Inaddition,thePostTripdatacanbeobtainedintheControlRoomontwoofthreeterminets,orincomputerroomonthelineprinteroroneitherteriminet.Historicaldatamaybeobtainedoneitherthecolorvideoortheterminet.Also,historicaldatacanbeobtainedfromthelistofdedicatedstripchartswhicharelocatedinthecontrolroom(seeSection1.2.1.1).Parametersmonitored,samplingrateandbasisforselectingparametersandsamplingrate.NMP2ResonseTheparametersmonitoredbytheProcessMonitoringSystem(PMS)arelocatedonAttachments4"NSSSPostTripLog"and5"BOPPostTriplog".TheseNSSSpointsprovideinformationtoenablethesystemtocalculateanddisplayorprintout,avarietyofnuclearsystemdata'rrays(LPRMreadings,sensitivities,andcalibrationconstants;APRMgainadjustmentfactorsandtriplevels;controlrodpositions;fuelbundleisotopiccompositions,etc'~).TheBOPpointsprovidedatatoenablethesystemtoperformcalculations,evaluationsofthestatusandefficiencyofvariousplantsystemsnotdirectlyrelatedtothenuclearsteamsupply.Thecalculationsincludeturbinecycleperformance,condenserperformance,unitelectricperformance,andfeedwaterheaterperformance.SelectedNuclearSteamSupplySystemandBalanceofPlantdigitalsignalsarescannedonceeachsecondforthepurposesofmonitoringprocessvariablealarms.Thesamplingratefortheanalogvariablesareintheprocessofbeingreviewedtodeterminewhatscanratewouldbemosteffective.Theycanpresentlybevaried(toscan)every1,5,15,30,or60seconds.Thesystemiscapableofscanning100pointspersecond.Eachtimeaninputisscanned,itiscomparedtoitspreviousstateandifitisdifferent,theprogramwilldeterminethenatureofthechange,(e.g.,alarmorreturn-to-normal)andadescriptivemessagewi11belogged.
I1"i~J 1.2.2.3Durationoftimehistory(minutesbeforetripandminutesaftertrip).NMP2ResonseTwoPost-TripLogsareusedatNineMileUnit2.ThefirstlogisanaccumulationofpointsassociatedwiththeNuclearSteamSupplySystem,andthesecondisanaccumulationofBalanceofPlantpoints.TheNSSSlogdataintervalisundergoingsoftwarechangesandwillbecompletedpriortostartup.Thesechangeswillallowthelogtorecorddata5minutesbeforeatripuntil10minutesaftertheevent.TheBOPlogismadeupofamaximumof48predeterminedpoints.Thedatacollectionperiodrangesfrom30minutesbeforethetripuntil30minutesaftertheevent.Eachpointisscannedevery15seconds.Bothlogswillbeinitiateduponcompletionoftheirrecordingconstraints.Recordingandscanratetimesarechangeableviasoftwarechangeroutinestoallowplantoperationstovarytheprocessmonitoringfunction.1.2.2.4Formatfordisplayingdataincludingscale(readability)oftimehistories.NMP2ResonseAttachment6isarepresentationoftheNSSSandBOPPost-Triplogs.Thisattachmentisself-explanatoryastothedatathatiscontainedontheselogs.1.2.2.5Capabilityforretentionofdata,informationandphysicalevidence(bothhardwareandsoftware).NMP2ResonsePost-Triplogscanberecoveredin.thesamemannerasdiscussedinSection1.2.1.5.Theonlydifferencebeingthatthelogscanberecoveredandreprintedexactlyastheoriginallog.Post-TriplogscanbedemandedatalatertimeifnoothereventhasgeneratedanothernewPost-Triplogtooverlayexistingdata.AsstatedinSection1.2.1.5,AP-10.1commitsUnit2tomaintainhardcopiesofScramReportsandScramAnalysisDataforthelifeoftheplant.1.2.2.6Powersource(s)(e.g.,ClasslE,non-ClasslE,noninterruptible).PowersourcesarethesamesourcesdiscussedinSection1.2.1.6.Otherdataandinformationprovidedtoassessthecauseofunscheduledreactorshutdowns.Otherdataandinformationavailabletoassessthecauseofunscheduledreactorshutdownsincludeoperatorlogs,trendrecorders,
meterindications,surveillancetestdatasheets,seismicrecordingequipment,operatorinterviews,andoccurrencereports.Othercomputersystemsavailabletoassistintheevaluationofunscheduled.shutdownsaretheSafetyParameterDisplaySystem(Attachment1.2B),andtheGeneralElectric'sTransientAnalysisRecordingSystem(Attachment1.2C).Inaddition,previousscramreportdataandinformationisavailableattheoperator'sdisposalenablingthemtocompareeventinformationwithknownorexpectedplantbehavior.Scheduleforanyplannedchangestoexistingdataandinformationcapability.NMP2ResonseTheSOEprintoutwil,lbechangedfrom30to5secondstobemoreconsistentwithtimelinesofplantdataforoperatorresponse.Also,pointswillbeaddedtoSOE5Alarmdisplaysasrequiredformoreeffectiveplantoperations.Inaddition,thedurationoftimehistoryassociatedwiththeNSSSlogisundergoingsoftwarechangessothatitwillbecapableofrecordingdata5minutesbeforeatripuntil10minutesaftertheevent.
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0ee00/OSAIgQ(toSection1.2)HTIIEIIILEPOIIIT-UNITtCOIIPUIERPOIIIIS1/0LISTSOERLPORICOIIPUTERSIIEET5TORLOOPOIACeRAIICIIIC~~aCOIIIROLLLO155UL'RLVISION9~~oo0>>0'eooo0eRPT10POTIITDESCRIPTIONPR>ACOCU'IOUT1C01SlSOVIICEV5USEDVOIIIT1015TSILOVULECOIIIACTKSKLSKVEIAIORPTPR15ALIIAINIIIIIOVOIRETOKCeHTKIIOLIOE5IIIIA'IIO'I0)AAAXCS)0)AAAXCSt0)AAAXCS)0)AAAXCS40)AAAXCSS07AAAXCS407AAAXCST07AAAXCSO07AAAXCS90)A)AD(C4007AAAXC41OTAAAXCbtOTAAAXC4)OTAAAXC4407AAAXC4507AAAXC44OTAAAXC49OTAAAXC4807AAAXC4907AAAXC)0SPARK~SOKSPARKSOKSPARK5OK5PARESOE5PARK~5OKSPARK5OE5PARK~SOESPARK5OKSPARK5OESPARK~SOK5PARKSOESPARESOESPARK-SOE5PARKSOKSPARKSOKSPACESOESPARKSOKSPARE~SOKSPARKSOESPARKSOKtttttttIC91P4)))-091~tICVI-P4)-)-09-)VIC91~Pbt)-)-09~SebIC91-Vbt)-)-OV-T.O1C91-P4Z)-)-09-9~IO1C91P40)-)-09-lleltIC'll-Pb)-)09-1)Icl1C91P40))09-15e141C91-P40)-)10let1C91Pbt)))0-)eV1I.OI-P4t)-)-10SebIL91~I'l-)~IIIIeIIII.PI.I'a0)-)-I0~9eIIIII'0l-Iebt)-I-IO1IeltILf1I'bt)-)-IO~II~IVIC91-Pbt)-)-IU~l)e141C91P40))-ll-l~t1C91-Pb))-11-)evIC91-P~))-ll-Se4IC9l-l'bt)-)-II-I~0 0
<ZiAQwXpi70>o0xihUKITXiPAGEXXOFXXSEOUEKCEOFEVEKTSLOONO/DA/YRNRINKTINEIHM!SCeHHHHRINKISCeHHNHRINKlSCoNNNHRINKISC~HNHHRfNKeSCeNNNHRINKsSCoNNNPTIDPPPPPPF'PPPPPPPPPpppprpprpppprrppPF'PF'F'PPPpppprpprKAHEAAAAAhAAAAAAAAAAhhhAAhAAAAAAAAAAAAAAAAAAAAAAAAhAAAAAAAAAhhAhhhAAAAAAAAAAAAAhhhhAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAhhAhhAAAAAAAAAAAAAAhAAAAAAAAAAAAAASTATUSAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAARECORDINITIATEDAFTER64COKTACTCKAKOESFOR30SECOMDAFTERFIRSTCOKTACTCHANGE~MHICHEVERISFIRSTSDMm~COuCX7tfpure3-10.9~1SequenceofEventslng 0
UNITl,P4GE11OF11NO-DA-TRHR:NHHISTORICALDATARETRIEVALAHDREVIEHSERVICES)OHLIHEIBETHEEHHR:NHOHNN/00/TYAMDHRiNHOHNN/OO/YTSflua'.I(.cc~Ff~'NfpLogTINEPOINTIDPOIHTDESCRIPTIOHSTATUSHR:NH:SCPPPPPPPP00000DOODDOOOODDDDDDDDDDSSS~Xc:cLAXrmmVlpm~XmmÃI>opXmmTOOlSPL4TNOREIHfORN4TIOHiPRESSPAGEFORH4ROFILEOHR>-I.OWR/gNCcIO%CDO))R3-1-I)istoricalDi<<..i)(a)r).v.ilsndRevieMServices-~cs'~c<<fCI"g'/iM7>).C(i,ZZ0
ATTAOILBHf(toSection1.2)COMPUTERPOINTSForNSSSPostTripLogFWSLA'101RCSFB01FWSB01FWSFA103FWSFA104NSSPB01FWSPA101CNMFB02CNMFB01RCSTA103RCSTA105CMSPA01CMSTA01CMSPA02CMSPA04CMSTA07CMSAA02MSSBC20CWSTB10SWPTA53SWPTA74CNSLA03TMLPA02CNMPA02ReactorWaterLevelRecircFlowTotalFeedwaterFlowTotalMainSteamFlowTotalMainTurbineSteamFlowReactorPressureSteamDomePressureCondBoosterFlowCondPumpFlowRecircPumpSuetTempARecircPumpSuetTempBDrywellPressuresDrywellTempDrywellHighRangePressureSuppressionPoolPressureSuppressionPoolTempDrywellOxygenBypassValvePositionAvgCondTempRiseServiceWaterInlet'FServiceWaterDisch'FHotwellLevelTurbingBigOilPressCondVac 0
/jtTPQ{fQJ7'5(toSection1.2)COMPUTERPOINTSForBOPPostTripLogNMP2A273NMP2A274NMP2A275NMP2A276NMP2A277NMP2A278CNMPA04FNSPA04CNMPA01MSSPA05MSSPA06SPGQA02SWPFA08SNPFA09SWPFPA15SNPFPA16TMBPA01TMEPA01FNSPA100MSSFA101NMPFA101NMPFA103NSSFA101RCSTA103RCSTA105CCPPA01CCPTA16CCSPA01CNMPA'03HVRPA01MSSTA03OFGFA01OFGPA01TMEPA03TMEPA04APRMAAPRMBAPRMCAPRMDAPRMEAPRMFCondensatePumpsDischargeHeaderPressureFinalFeedwaterPressureToReactorCondenserVacuum1ATurbineMainSteamInletHdr.PressureTurbine1stStagePressureGeneratorWaterServiceWaterPumpLoopBHdr.FlowSWPLoopAHeaderFlowServiceWaterLoopADischPressureServiceWaterLoopBDischPressureHydraulicFluidPressureGlandSealSteamSupplyPressureReactorPressureCleanupFlowRecircLoopAlDriveFlow.RecircLoopBlDriveFlowTotalCareFlowRecircLoopAlInletTempRecircLoopBlInletTempRBCLCWPumpDischHdr..PressRBCLGWHeatExchangeDischTempTBCLCWPumpDischHdr.PressCondenserVacuum1BReactorBldg.DifferentialPressureTurbPSV89AOutletTemperatureOffgasSystemTotalFlowOffgasSystemInletPressureCleanSteamReboilerE1ADischSteamPressureCleamSteamReboilerE1BDischSteamPressure
APl.((H.HIT6(tosection1.2)NUCLEARLHIROYlUSlHESSOl'ElATloHSGENERALIELECTRIC23h4198II%V00~0~004JXICC'X4OINEO01)AIsgV.I~ltCiCtCII4lIJ.'CI.CI.Cala.fa.IJCI.alCa.L.XX00XkXXXkCOCh00n0I'JH~\00AN000~O0OOXlCXXXXXXXXlCXCOCOXXXX00XkXkXXXkChVlX.XXXXXXXXXXlCCOCOXXXlC0XXXXXXCOCOXXXX00XXXlCXXXkChIhxlcXX00XXXXXXXlCCOVlxxXX00lCkXlCkXXlCUlCOXkXk0~l<<kkkk)CVlCOIC0MIIICO0Ca.on000nnCslA00n0CVtsl00nnAAOo~stXXXXXXXXXXCOCOXXXX00kXkXXXCOUlXXXX00XXXXXXXXCOCOXlCXX00XXXXXXXXCOCOXXXX00XXXXXXXXChChXXXX00Xk)CXXXXXChUlXkXXXXIXklCkXkChUlXkXX00XXXsklClCXXVlVlXXXX0lClCXXVlVlXCO<<CCtC4JICJ4JUlInChIZ0Ct.4J0,CJaXCl4lOCCG.O~4)CC4JICC~KCh4lI'4EC<<CCe00KCl00JP)O.0OZCK'o<<CI404J4.CJ4JXCC4J'hC)4J0I-Ch00UlXX0COnaC~4J0X4.<<fCOIhChCC04J0tDX4lO~4lUl4JCL'0ICll~Q.wO>0~a.fml4l'0I
Attachment1.26GenericLetter83-28Post-TripReview-DataandInformationCapabilitySafetyParameterDisplaySystem(SPDS)
Capabilityforassessingthetimehistoryofanglovariablesneededtodeterminethecauseofunscheduledreactorshutdowns,andthefunctioningofsafety-relatedequipment.Briefdescriptionofequipment(e.g.,-plantcomputer,dedicatedcomputer,stripcharts).NMP2ResonseTheNineMilePoint2LiquidRadwasteSystemandEmergencyResponseFacilitycomputersystem(LWCS/ERF)consistsofdualHoneywell4500CPU'sonwhichthestandardHoneywellSEERsoftwarepackagehasbeenimplementedandmodifiedasneeded.Eachprocessorcontains25KofcorememoryanddualportedAmpexlargecorestoresusedforbulkdevices.Thesystemalsoutilizestwo80MBdiskdrivesforadditionalstoragecapacity.Amagnetictapeunitisusedforhistoricalrecordingandadditionalback-upcapabilities.Videomonitors,types/printersandkeyboardsarelocatedinthecomputerroom,thecontrolroom,theTechnicalSupportCenter,andtheEmergencyOperationsFacilitytoenableoperatorsinrecordingandviewingeventdata.1.2.2.2Parametersmonitored,samplingrate,andbasisforselectingparametersandsamplingrate.NMP2ResonseTherecanbeupto690datapointscontainedontheEventHistoricalRecordingSystem.Thesepointscanbecontainedinoneof115groupsmadeupof6datapointseach.Dependingonwhichgroupthedatapointiscontainedin.Thesamplingratecanbeevery1,5,or30seconds.Theonlyexceptiontotheseratesiswiththetwoweekposteventrecording.Thisdataiscollectedevery15minutes.1.2.2.3Durationoftimehistory(minutesbeforetripandminutesaftertrip).NMP2ResonseTherearethreetypesofhistoricaleventrecordingontheLWCS/ERFcomputersystem.Twohoursofpre-eventdataiscollectedonacontinuousbasisinacircularbuffer.Whenapre-definedeventisdetected,thebufferisfrozen.Twelvehoursofpost-eventdataiscollectedimmediatelyfollowingtheoccurrenceofapredefinedevent.Thisisdonebytheuseoftwo1hourbufferswhichareusedinaswitchingprocessfor12hours.Twoweeksofadditionaldatawillbecollectedimmediatelyafterthe12hourcollectioniscompleted.
Formatfordisplayingdataincludingscale(readabi1ity)oftimehistories.NMP2ResonseThetrendhistorywillconsistoffivesecondarydisplayswhicharereactivitycontrol,corecooling,coolantsystemintegrity,containmentintegrity,(AttachmentsA-D)andaradioactivereleasedisplay(future).Eachsecondarydisplayconsistsofanumberoftrendplotscoveringa6-minutetimespan.ThereactivitycontroldisplayconsistsoftrendplotsofAPRMpower,IRMpower,andSRMlogcountrate.ThecorecoolingdisplayconsistsofatrendplotofRPVwaterlevel.ThecoolantsystemintegritydisplayconsistsoftrendplotsofRPVpressureanddrywellpressure.Thecontainmentintegritydisplayconsistsoftrendplotsfordrywellpressure,drywelloxygenconcentration,suppressionpooltemperature,andsuppressionpoolwaterlevel,aswellasthecontainmentisolationvalvegroups,Theradioactivereleasedisplayisacompositeofstack,off-gasandcontainmentradmonitorparameters.Althoughthefinaldesignisnotcomplete,weanticipatethattheradioactivereleasedisplaywillbeacompositeofoff-gasandcontainmentradmonitorparameters.Alldisplayscontainsafetyfunctionblocksatthebottom,whichmaybegreenorreddependinguponwhetherthefunctionisconsidered"normal"or"inalarm/unknown."Thecolorofthesafetyfunctionsisdeterminedbythestatusofthevariablesassociatedwiththosesafetyfunctions.Attachments(E-H)aretheformatsusedforviewingtheEventHistoricaldata.Thisdatacanbeaccessedbyadisplayoraprinter.Theoperatorcanviewthedatabasedontimeforeachsampletaken.Thisdisplay/printoutcanbebasedonanyofthegroupsandrangedoveralloranyofthetimeperiodoftheeventrecording.Theoperatorcanalsodisplayatrendofthevariousgroups.Thistrendcanalsobebasedbygroupandconsistofdataoveraspecifiedperiodofthedatarecording.Capabilityforretentionofdata,information,andphysicalevidence(bothhardwareandsoftware).NMP2ResonsePrimaryretentionofdataisdoneondiskbuffersforallthreetypesofhistoricalrecording.Twobuffersareusedforthepre-eventrecording,whichisabletohold1hourofdata.Uponthedetectionofanevent,thepre-eventbufferswillbefrozenandcanbesavedtomagnetictapebyaprogrammer.The12hourpost-eventdataiscollectedwiththeuseoftwo,1hourbuffersondisk.Thesebuffersareusedinaswitchingmode,andaredumpedtomagnetictapewhentheybecomefull.The14dayposteventcollectionalsousestwobuffersonthedisk.Thesebuffersaredumpedtomagnetictapedaily,bytheprogrammer.Theprogrammerhastheoptionofdumpingthedatatotapemanuallyorinitiatinganautomaticmode.Thedatacanberestoredfromtapetoareviewbufferonthedisktoallowaprogrammertoviewortrendthedata.
1.2.2.6Powersource(s)(e.g.,ClassIE,non-ClassIE,non-interruptable).NHP2ResonsePowertotheUnit2LWCS/ERFcomputerisprovidedbyanuninterruptiblepowersupply2VBB-UPSlAnonclasslE.Thissupplyisfedfroma600Vpowerpanel2VBB-PNL301,whichissuppliedbyeitherthestationgenerator13.8kvline(2WJS-US3,duringnormaloperation)orfromanoff-siteScriba115kvline(2NJS-US4,duringashutdowncondition).Back-uppowerissuppliedbya125vDCbatterysupply,2BYS-SWG001A.Insummary,uponlossofnormalpower,astatictransferswitchtransferspowerfromthenormalsourcetothealternativesource.Ifbothnormalandalternatesourcesarelost,theDCsourcewillautomaticallypickuptheloadsbymeansofaDCauctioneeringcircuit.
ATtrA(tp1.2B)NHP-2HOOEENTER42271254PRHREACTIVITYCONTROL04TE:03:18:86TINK:00:00:90/0IRHPOSITIONOUT13IRHPOWER/0SRHPOSITION1E+6OUTSRHLOGCOUNTR4TECPS81E-15'I-0856:88TINE58:8888:884TV4NTSYNRTONTAINHENINTKGRIT
lT9(to1.2B)NMP-2MOOEENTER2esCORECOOLINGltPVLEVELIN004TE:63:i8:86TIME:HH:MM-'554228-tCSsv:ees6:ee58:eeMM554NTSYNRTONTAINMENNTEI
ATTXNBflC(to1.2B)NMP-2MOOEENTERDATEn=1686C00LRl')T"'5If'rTEG.P.IT'a@&i580RPVPRESSPSIGnMSIPOSITIONSHUTSRVPOSITIONSHUTi5I3CiF.iWELLFPE==F:-IG-559:0056neTIMEOnOO:OnEACTIVITYONTROOROOLINCOOL4NTSYSINTEGRITYCONT4INMENTINTEGRITY
0TT/LK<PIT0(to'.2B)NNP-2NODEENTKRA230CONTRINNENTINTEGRITYPSIG8DRYHELLPRESSiSICONTAINNENTISOLATIONGROUP5i4SHUT24SHUT34SHUTSHUT25DRYHELLOXYGENCONCSUPPRESSIONPOOLTEMPX0DEGF0iBSHUT20SHUT38SHUT90SHUT2i75UPPRK55IONPOOLLEVELFKET8i%2sv:eeSS-'8TIHE58'654NYONT4INGUEN 0
(to1.28)ENTER(D)DISPLAYr(PF)PAGEFORWARDr(PB)PAGEBACKiREVIEWBUFFERTIMESPAN03-11-8611:1'tTHRU03-12-86'=TARTDATE03-11-86TIMEfi:i4.ENDDATE03-11-86TIMTIMENMP2Ui00NMP2U181NMP2U182NMP2U103%PIlR/PWR%PWR/PWR(P)PRINTS(C)CANCEL18:51E28:ii.GROUPNUMBERNMP2U10'tNMP2U105%PWR%PWRPRNTf"--11-8611:14:0>>11:14:0711:14:08fl:14:69ff:14:i611:1't:1111:1t:1211~1't:1311:1't:14li:14:15ll:14:16ii:1'4:17lf:1't:1811:14:19ff:14:20il:14:2111:1't:2211:1't:2311:1't':2't11:14'-2511:1'4:"611:1't:2711:14:28fi:14:11:1't:3011:1t:311:14:3211:14:33li:1f:3411:14:3511:1't:".6ll:1f:3?11:1't:3811:1't:39ff-f4:4011:1'4:'tl1114:4311:1't:4'tli:14:'t5191919f91986.Sb.8b.66.86.19191919191919191919191919191919191919191986.86.86.86O>>r,Ob.'O>>r.86..b:=6.Pr>>r.Sb.86.8>>r.8>>r.86.8b.86.1919191919191919191919191986.86~86.Sb~86.86r.8b.86~86.eb~86.86.86.7586.7586.7586.7586.7586.7586.7586.75.86.7586.7586.7586.7586.7586.7586.75eo75"6.7586.7586.7586.7586.7586.7586.7586.75S6.7586.7586.7586.7586.7586.7586.7586.7586.7546.7586.7586.7586.7586.7586.7586.7586.9786.97S6.9786.9786.9786.9786.9786.9786.97Sb.9786.9786.9786.9786.9786.9?86.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9786.9787.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.187.1387.1387.1387.1387.1387.f387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1387.1386.0986.0986.0986.0986.8986.09S6.0986.0986.6986.0986.6986.0986.0986.09So.6986.0986.0986.0986.0986.0986..0986.8986.8986.8986.8986.0986.8986.8986.8986.8986.8986.0986.0986.0986.0986.0987.4887.4087.'tO87.'t087.'087.4087.4887.'tO87.'tO87.'tO87.4087.'4087.4887.'tB87.4087.4687.'tO87.'%087.4087.'tO87.4087.'tO87.4887.'tO87.'tB87.4887.4087.40S7.4887.4087.4087.40S7.'t087.'tO87.48S7.'tB86.8987.'tO86.0987.4086.09S7.fO86.09S7.40
=/11/BB11:13:15ii:19:15NHP2U186NHP2Ui8iNNP2Ui826.000108.808.880180.8825.006106.00NNP2U1830.08890.88811:1S:12ii:1?:891l:;:8650.088HIDUES50.800GROi.!21INTERVAL81SECt<tiF:8APRNCHANNELAPNRLVLtlttF:..1APRt1CHANNELBPARLVLtlHF:.:2*PRHCHANNELCPNRLVLtltlF::'3APRHCHANNELDPNRLVLUALUE85.78BB.9'tee.Bi87.i562.500'f5.008TRENDLIHITSLONHIGH25.88,75.808'5.8090.00858.88100.0856.8098.088
"".3/11/86NMP2U160NMP2U10iNMP2vi82NMP2Ui0311:"-5:2S0.660168.008.080100.0025.008100.880.86890.88811:35:2511:36:1611:29:5511:19-96MIDVALVES50.666GROUP021INTERVAL05SEC56.668tltiP2V100APRt1CHANNELAPWRL'VLt(t1f2U161APRMCHANNEL8PARLVLt/t1P2U162APRMCHAtdNELCPNRLVLt/MP'"U163APRMCHAtlNEL0PHRLVL'VALUESS.7886.9'%6.8i87.15e2.566%5.880TRENDLIMITSLONHIGH25.0875.00075.8090.08050.08108.0050.8090.800
- .~i'12i961=
- 51:6'fNMP2U108NMP2U101NMP2U182NMP2U16318:51:690.060168.866.000108.6025.860188.008.00898.80018:19:3't17:98-Ot17:16:3'tttID'VALUES56.000GROUP621INTERVAL0SECt)ttFZU166APRMCHANNELAPWRLVLNttF2V161APRMCHANNELSPWRLVLt(ttP2V182APRMCHANNELCPWRLVLtlttP2U16APRMCHANNELDPWRLVL50.008VALUES5.7a86.9'0$i.~f87.f582.508V5.888TRENDLIMITSLOWHIGH25.8075.00075.6696.00058.08108.8850.0898.088
Attachment1.2CGenericLetter83-28Post-TripReview-DataandInformationCapability'eneralElectric'sTransientAnalysisRecordingSystemGETARS-1
Capabilityforassessingsequencyofevents(on-offindications).Briefdescriptionofequipment(e.g.,plantcomputer,dedicatedcomputer,stripchart).NMP2ResonseTheGeneralElectricTransientAnalysisRecordingSystem(GETARS-1)isahigh-speeddataacquisitionsystemdevelopedforstartupoperationsbutisapermanentplantsystem.ThesystemoperatesonaHewlett-Packard2117Fcomputersystem.Theprocessor'contains128Kwordsofhigh-speedmemory,dual-channeldirectmemoryaccess,andadynamicmappingsystem.ThesystemutilizesaHewlett-Packard7920movingheaddisk,whichhasacapabilityof50mbytesforprogramanddatastorage.AHewlett-Packard7970Emagnetictapedriveisusedforhistoricalrecording.ThesystemalsoutilizestheValidyneHD310ExpandedMultiplexersystemastheanalogtodigitalconverter.Thissystemcancontainupto4096analoginputs.PeripheralscontainedonthesystemincludetheVersatecV80printer/plotter,andoneHP2645Ablackandwhitevideodisplay.Theoperatingsystemusestwosetsofsupervisorysoftware.TherealtimeexecutivesystemistheRTE-IVB.Thissystemexecutesalldataentryprograms,datareductionprograms,andutilityprograms.AloweroverheadexecutivecalledRTEMisusedtopermitinterfacingbetweenperipheraldevicesand(controlforhigh-speeddata)acquisitionprograms.Thesearealso21permanentremotemultiplexesusedforanalogscanning.1.2.1.2Parametersmonitored.TheGETARSsystempresentlycontainsapproximately500Analogpoints.Attachment1containsalistofthesystemsandtheIDpointswhicharemonitoredbytheGETARSsystem.1.2.1.3Timediscriminationbetweenevents.NMP2ResonseTheremotemultiplexers(MC370AD)eachcontain32analogchannels.Thescanratesrangefrom23,810scans/secondwhenmonitoringonechannel,to2,100scans/secondwhenmonitoringall32channels.Inarealtimeenvironment,groupsmaynotbescannedmorerapidlythanonceeachmillisecondi.e.,1,000samplespersecond.
Formatfordisplayingdataandinformation.NMP2ResonseThereareanumberoffunctionscontainedontheGETARSsystemthatproducevariousreportsandplots.Thecontrolrodtimingfunctionindentifiesthestatusofeachcontrolrodandevaluatescontrolrodscramperformanceagainsttesttimecriteria.Attachments2through7provideformatexamplesforthereportsgeneratedbythisfunction.Theoff-linePrint/Plotprogramprovideson-siteverificationandanalysisofdatarecordedbythedataacquisitionsystem.Attachments8and9representtheformatassociatedwiththeprinterandtheplotter.Thedynamicnoisefrequencyanalysisfunctionisatimeseriesanalysispackagewhichallowstimehistorydatatobeanalyzedinthefrequencydomain.Attachment10providesthisfunction'soutputformat.Thehistogramfunctionprovidesadisplayofsignaldataineitherengineeringunits,millivolts,orengineeringunits.Attachments11&12providesasampleofthisfunction'soutput.TheRunanalysisfunctionprovidesastatisticalanalysis.ofagivendataacquisitionRun.AsampleformatisprovidedonAttachment13.Capabilityforretentionofdataandinformation.NMP2ResonseDataretentionfortheGETARSsystemiscontainedoneithertheDiskDriveorMagneticTape.Systemutilitiesareavailableonthissystemtosavethedatatoorfromtape.Thedataacquisitionsystemautomaticallywritesanalogdatatothedisk.Powersource(s)(e.g.,Class1E,non-ClasslE,noninterruptible).NMP2ResonsePowertotheGeneralElectricTransientAnalysisResponseSystem(GETARS)issuppliedbyanUninterruptiblePowerSupply2VBB-UPSlGNon-Class1E.Thissupplyisfedfroma600Vpowerpanel2VBB-PNL301,whichissuppliedbyoneoftwosources,eithertheStationGenerator13.8KVline(2NJS-US3,duringnormaloperation)orfromanoff-siteScriba115'ine(2NJS-US4,duringashutdowncondition).TheGETARSsystemisalsosuppliedbyanalternate600VBUS2NJS-US6.Inaconditionbywhichallpowerislost,backuppowerissuppliedbya125VDCbatterysupply2BYS-SWG001C.
1,2,1.6t')Insummary,uponlossofnormalpower,astatictransferswitchtransferspowerfromthenormalsourcetothealternativesource.Ifbothnormalandalternatesourcesarelost,theDCsourcewillautomaticallypickuptheloads(bymeansofaDCauctioneeringcircuit)andsupplypowerpanel2VBS-PNLC102whichfeedsGETARS.Capabilityforassessingthetimehistoryofanalogvariablesneededtodeterminethecauseofunscheduledreactorshutdownsandthefunctioningofsafety-relatedequipment.Briefdescriptionofequipment(e.g.,plantcomputer,dedicatedcomputer,stripcharts).NMP2ResonseAdescriptionoftheequipmentmakinguptheGETARSsystemisprovidedintheresponseforSection1.2.1.1.1~2.2.2Parametersmonitored,samplingrateandbasisforselectingparametersandsamplingrate.NMP2ResonseAllsysteminputscontainedinthesystemsdescribedonAttachment1arecontinuallybeingmonitored.AsstatedinSection1.2.1.3,theabsolutemaximumrecordingspeedis1,000samplesperchannel.1,2,2.3Durationoftimehistory(minutesbeforetripandminutesaftertrip).NMP2ResonseUponatripcondition,datarecordingcontinuesuntilthediskdataareabecomesfullortheoperatorterminatesthedatarecording.Thisdiskareawillholdamaximumofllminutesofdataofwhichone-sixthispre-tripdata.1.2.2.4Formatfordisplayingdataincludingscale(readability)oftimehistories.NMP2ResonseDescriptionoftheformatsfordisplayingtherecordeddataiscontainedinSection1.2.1.4.1.2.2.5Capabilityforretentionofdata,informatinandphysicalevidence(bothhardwareandsoftware).NMP2ResonseDescriptionofthecapabilityforretentionofdataiscontainedinSection1.2.1.5.
1.2.2.6Powersource(s)(e.g.,Class1E,non-ClasslE,noninterruptible).NMP2ResonseAdescriptionofthepowersourcesiscontainedinSection1.2.1.6.Otherdataandinformationprovidedtoassessthecauseofunscheduledreactorshutdowns.Scheduleforanyplannedchangestoexistingdataandinformationcapability.NHP2ResonseSeesection1.2.4.A.
Attachment1(toSection1.2C)IUnit2's.GETAR'sSystem(parametersMonitored)andIDPointsMainSteamSteamLineFlowMainSteamHeaderPressureMainSteamLineIsolationMSIVPositionRPSManualReactorScramAutoReactorScramRxInstrumentationRxDomePressureRxWaterLevelRxCorePlateDPRxBottomHeadDrainTemperatureRxVesselLevel(WR)NeutronMonitorinAPRM'sLPRM'sThermalHeatFluxFlow-BiasedThermalUpscaleTripSetpoinResidualHeatRemovalRHRHxLevelRHRSysFlowRHRHxLvlContOutputRHRHxPressureRHRPumpTrpBrkr.'osn.CRDSystemPlowSelectableCRDPosition
Attachment1(Cont'd)(toSection1.2C)RecirculationSstemRecircLoopFlowRecircLoopFlowControlValvePositionRecircPmpTripBkrRecircMasterControllerOutputLoadDemandErrorRecircSysFluxErrorRecircSysFluxEstimatorOutputRecircLoopSuctionTempRecircPumpD/PJetPumpDoubleTapD/PJetPumpFlowLoopsTotalCoreFlowLFMGDriveMotorBkrRecircFlowControlFunctGeneratorInputsRCICRCICInitiationRCICSuctionPressureControllerOutputRCICElbowTapD/PRCICTurbineSpdRCICFlowFeedwaterFdwtrLineTempFdwtrFlowStm/FdwtrFlowMismatchFdwtrMasterControllerOutputFdwtrPumpSuctionPressureFdwtrPumpDischPressureFdwtrPumpBypLowFlowControlValvePosFdwtrPumpTripFdwtrLowFlowValvePosFdwtrHighFlowControlValvePosFdwtrRecircValvePosHighFlowFunctGeneratorOutputLowFlowMasterControllerLevelSetpointSTepGeneratorOutputHPCS/LPCSHPCSPumpTripHPCSInitiationHPCSDischargeFlowHPCSDischargePressureHPCSDieselGeneratorBkrTripHPCSMCCFeederBkrTripLPCSInjectionValvePos
Attachment1(Cont'd)(toSection1.2C)ControlRodDriveCRDFlowControllerOutputRCICTrip/ThrottleValvePosSafetReliefValveSRV'sADSInitiationBOP/EmerencBusBreakerNormalBrkrPosAlternateBrkrPosDieselBrkrPosMCCFeederBreakerPosBOP(Turbine/Generator)MainTurbineSpeedAutoLoadFollowingLoadReferenceOutputMainTurbinetripTransientAutoPressureSetpointEHCPressureSetpointPower/LoadUnbalanceStopValvePosBypassValvePosMainTurbineStmFlowMainGeneratorMWEGridVoltageGridFrequencyRCICRampGenSignalConverterOuputRCICEGMOutputRCICSteamControl(Governor)ValvePosTotalBypValvePosnBOP(CondenserExtractStmServiceWaterFWHeaterCondBstrPmpDischHdrPressServiceWaterPumpTripsSpentFuelPoolCoolingPumpTripServiceWaterPumpTripMainCondenserVacuumCondPumpDischHdrPressHtrDrnPmpDischPressLpHtrStringsA&BIsolationValvesBypassRxFWPBypassESSLP/HPHtrStringsWarmingValvesMainGenBkrPosPressRegOutputTotalContValvePos
NTAQ{fBf2(toSection1.2C)GETARS-ISAMPLEINPUTANDOUTPUTCRD-CONTROI.ffODTIMINGPage4"709Aug844.2.3SampleOutput-ChannelAndSubchannelNumberCVP[)OVT~VTI1CWTetV.~)CVrrl~ISNCCIrI.D.CVCrsIIfC/5V~CrrCVrr5IkVV5CCCIST5)~5OIO~IO'17O'O~O)S15Or~l)C'~'Ol~~I~~I~~I~OIO~I~IV~~~Ol~~I~~I~~I~)IC~~O'~~r~~r~~r~~I~~I~~r~Or~Or~~I~Or~~IO~~Ol~~r~~I~Ol~Ol~~I~~rO~/O~IO~I~Ol~OrOOl~~I~Ol~~I~OrOOrOOIOOI~OlO~rO~I~OrOOr~~IOOS~Ol~~rO~I~Ol~~I~OrOO/OOr~~i~OlO~r~OlOOl~~IOOl~Ol~~I~Ol~OIPOl~~r~~I~~I~I~~I~~IOOIO~IOOl~~~~I~~.'~'~I~~~OrO~I~~I~~"~~I~~I~r~~'~IO~I~O')Tll1~I~~I~~IO~I~OIOO/~OIO~I~~I~IO~I~))CrI~IOOr~)T')rIOl~)JIII~r~~I~OrO~I~Ol~1)C~tl~IOITOlOI~OIOrOr~~I~~IO~I~OIOOlOOlO~I~OlOOl~~rO~I~~I~~I~~I~~rO~/OOrO~IOOI~O~)~/1O~Or~fr~~I~Ol~)Tl/)Or~OI~~I~Ol~Ol~~IOOlOIOOl~~IO~I~I~I~Ol~~I~~IO~rOOlO~OOI~OlO~/O~I~)O%~)~)C~O~I5%CCCO
ATTACHI'ENT3(toSection1.2C)GETARS-ISAMPLEINPUTANDOUTPUTCRD-CONTRO'ODTiMING~3SampleOutputCon't-ChannelandSubchinnelNumberPage4-809Aug84CRD1.D.STATDSOFALLCRD'S6153696529252113~899888888887888888888888848888888888888888899488889981216282i2$3236A8ill85256688~>HODATA,1~>FASTROD,2~>NORHALROD,3~>SsOVROD~A~>FA1LEDROD~99~>1NOFSRATJV6ROD
ATT4(@Pl[4'(toSection1.2C):G-TARS-ISAMPLEINPiJTANOOUTPUTCRG-CohTsROLRODTlb'slNGPage4-909Aug844.2.4SampleOutpu:-Roc!TimmingCBDSTATccsCATETIILECQD~ST*TsCSDATETticECBD~STATuSDATET)IIE2$.6)32o6)~4,6120,5712~57lid578,512'5332,51~i,sl56.5116.492$.i9id,~952,I9B,iSZINGis12,iSli~45SC,i5$~4)tb~~I12,4I4ie4)56,4)$,372$,1732.17il~1756,17$,3128,1112.3114.1356,31$F292$.2932,2941'956,29$,2528.2532F25lie?5SC,25$~Zl20.2)12,2144.2156~Zl)to)724.173C.1748,)7$~)328.13lt.)3il~ll56,Il20,912,9I~,92B,532,5li~5I30d0b0880bb08b0Ib008Ib88b888bIddd08II000bI0I0drd0dI0I/je/$1lzl)?led6/2$/BiC/2$/$46/Ze/$4C/2$/Bi6/2$/BI6/2$/$16/2$/Bi6/28/al6/2$/Bi6/ie/ei6/2$/Bi6/2$/Bi6/zs/ei6/28/Bl6/2$/8~6/?alai6/2$/ei6/ZQI$46/~elaa6/28/ai6/28/816/28/Bi6/2$/046/ZB/ai6/zs/ei6/?a/elSl$/$~6/?8/$4Clie/ai6/2$/BI6/2$/$16/2$/ai6/2$/Bi6/28/Bi6/ZB/si6/2$/Bi6/28/$~6/2$/Bl6/2$/Bi6/Ze/aiCIZBIBIC/28/$4CIZBIBi6/28/Bi6/28/BiSita/BiC/Ze/siC/2$/QiCIZBIB~6/Zessi6/tele~6/?$/Si6/Zasaa6/$~Ba6/20/BiC/'Bissa6/is/Bi6/Zslsi6/ie/Si6/ZB/Si6/ZS/Ba6/2$/$46/zs/eilcbc30SclbbaleSs)0SslbSc10SclbSilbdaleba)SPa)0bcldtc)SPslbSs10eslPbilbScleSilb05)0ec10Sclb8ildbilePaidSsIISilbbilePc)0bs)D~sleeslbbcltbslddcldeslbSilt0cldNiINScISSsIS0s)0sitebiletcltSclebsI~bs)$SsIddilbSslsSclbSslbdstdPsISdsltassLssPs)0tcldSclbba)dPs)0bcltbslb24~Cl36~CI12.57Zi~5736,5748'712.53Zl~5316~53iB53BoasZb'.i93t.i9II,1956.4912'52i,iS16.15~e.asCe,is12.iI21'l36.4)4$.11Cd.il12.372'1736,37IS.1760.17)2.3124.1136~31~$.31C0.3312.29Zi~2936.29i$,2960.2912'524.2536.25i8,25C8.25)2.212'tl36,2)48,21Cd.tl16,172$~17lb.175,17)2.112~.1116~)1~ss.Ilt~~,92i,936.948,92~.536,5S00t0d0009900dII0dd0b00Id8ed99$00$0800tI080Ib0b00d0e0I000080C/1$/BiSIZBIB4~Iza/$16/2$/ei6/28/Sa6/28/BiCIZBIalCltalsi6/2$/Bi6/Ze/Sa4/21IBICltslai6/2$/$~6/?$/$46/2$/$~6/2$/$46/2$/$46/28/$~6/2$/8~6/2$/Bi6/28/BiC/28/$~6/2$IS~6/2$/$16/2$/BiC/2$/BI6/2$/$46/2$/$46/2$/ea12/12/BIC/2$/Bi6/2$/BiCIts/$~6/ZaleaC/2$/Sl6/ts/$46/2$/Sialta!BiC/2$/Bi6/28/Sa6/28/$4ClzaleaCIZB/BiC/2$/BiCI2$/Bi6/20/eiC/2$/BiCIZB/BlC/2'Bi6/2$/ai6/Ze/siCltB/aa6/ZS/ei6/2$/BlCIZBI$46/2$/eaC/20/$~alai6/ielei6/28/$4alta/$46/Za/si6/zs/ei6/2sleiScleIcldIatebiI~SilebaldSc)8,balttait0~IS6sltSaleSsltbs)0es10Bcldbc)8ScleesleSc)0SaleScleSclbbilbbs)tSilebi)0BcltSsId23~0bsleSsISSslbScltbclbbaldNslbts18dclbbslbSc)0bcISbs)PSaleSs10Silt~s1$SaidIslbdclbPaidtslbsi)e0ltbsltbaltIs)0bslbIsldbaldbctdbs)edcldI'"I828.6140')16,57ze.'s7i'752F5716,532'34$~5352.53lz~~924~is36~1948~4'9i~ls16,452$,iSle~4552.i54~il)6~412'140,11Stoa)I~3716,172'740~3'752,174.3316,312$.3340.3352.13i,2916.292$.29ia,'zsS2F294,2516+252'5F0'S52.254.2116.212$21~0'152+2)$,17ed'.)732~17il,)756~17)Cell28,)340,I15?~I1IC,92$~9~I~952.92$,51'02a00000000t800I88d0888b80I000d00000I0d0I00996/2$/$4I/18/816/zslaiSI2$/Bi4I25/BI6/Za/SiSIZB/$4Size/Bi6/2$/$4Size/Bi6/2$/Bi6/28/$46/2$/846/2elea6/2$/$46/2$/$46/28/Si6/2$/$46/2$/Bi6/2$/ei6/2$/BiC/?$/Bi6/2$/SI6/2$/$46/2$/ei6/2$/$46I2$/elSize/Bi6/Za/S~6/2$/$4CIZe/Sa6/2$/$46/2$/Bi6/28/BlClislei6/2$/Bi6/2$/$4C/2$/BI6/28/BIC/2$/ai6/2$/$46Its/BiC/2$/Bi6/28/$46/28/BiC/2$/$46/2$/046/2$/$46/2e/aa6/zelsiC/2$/BiCl8/Bi6/ZQ/8~SlieleiC/2$/046/Ze/S~SIZSIQI6/2$/Bi6/ZBISI6/20/0~6/Za/8~6/2$/QiIII/026/2$/BiPs)dbc~S~slbec103s'20SclbIs)$Ss)0bil~ec10dslbds)$ScISPslbbalbeslebc)$ec)bPslbtiltPc)8SaleNc)0bc10SilbIiltesillbslbPaidbilbIileBcIbesleSsIebclbPileeclsdclbbi)eScleeclbdclebilbbalePslebitebaltPs)0dc)dbclddslbdsldIs)OSalPPaidec10tslbdilbdclesassIDes)DBc)adcbdslb
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Section2.12.2Genericl.etter83-28EguipmentClassificationandVendorInterface
EQUIPMENTCLASSIFICATIONANDVENDORINTERFACE(REACTORTRIPSYSTEMCOMPONENTS)PositionLicenseesandapplicantsshallconfirmthatallcomponentswhosefunctioningisrequiredtotripthereactorareidentifiedassafety-relatedondocuments,proceduresandinformationhandlingsystemsusedintheplanttocontrolsafety-relatedactivities,includingmaintenance,workordersandpartsreplacement.Inaddition,licenseesandapplicantsshallestablish,implementandmaintainacontinuingprogram.toensurethatvendorinformationiscomplete,currentandcontrolledthroughoutthelifeoftheplant,andappropriatelyreferencedorincorporatedinplantinstructionsandprocedures.Vendorsofthesecomponentsshouldbecontactedandaninterfaceestablished.Hherevendorscannotbeidentified,havegoneoutofbusiness,orwillnotsupplytheinformation,thelicenseeorapplicantshallassurethatsufficientattentionispaidtoequipmentmaintenance,replacement,andrepairtocompensateforthelackofvendorbackupandtoassurereactortripsystemreliability.Thevendorinterfaceprogramshallincludeperiodiccommunicationwithvendorstoassurethatallapplicableinformationhasbeenreceived.Theprogramshoulduseasystemofpositivefeedbackwithvendorsformailingscontainingtechnicalinformation.Thiscouldbeaccomplishedbylicenseeacknowledgementforreceiptoftechnicalmailings.Theprogramshallalsodefinetheinterfaceanddivisionofresponsibilitiesamongthelicenseesandthenuclearandnon-nucleardivisionsoftheirvendorsthatprovideserviceonreactortripsystemcomponentstoassurethatrequisitecontrolof,andapplicableinstructionsformaintenanceworkareprovided.NMP2ResonseNiagaraMohawkdoesnotcurrentlyplantodevelopaspecificlistofcomponentsthatwouldcompriseareactortripsystem.ThereactortripfunctionisaccomplishedatNineMilePointUnit2byutilizingredundantplantprocessinstrumentationthatinputtoaone-out-of-twotakentwicelogicsystem.Thesesignalsinitiateareactortrip(rapidcontrolrodinsertioni.e.scram)bydeenergizingsolenoidoperatedscrampilotvalvesthatventairfromthereactorscramvalves.Thecomponentsthatcontributetothereactortripfunctionarecontainedinseveralsystemsratherthanonereactortripsystem.Thosesystemswhosecomponentscontributetothereactortripfunctionincludethereactorprotectionsystem,reactorvesselinstrumentationsystem,neutronmonitoringsystemandcontrolroddrivesystem.Therefore,anewsystemidentifiedasthereactortripsystemwouldcauseunnecessaryinconsistencieswithexistingNineMilePointUnit2systemnomenclature.Thiswouldrequireextensiverevisiontoexistingdocumentationandtrain.ingprogramwithnoenhancementofsafety.
(Cont'd)However,ataskiscurrentlyunderwaytoupgradethedetailsofourequipmentclassificationlist(Q-List,SeeResponse2.2.1.2).Thiswillprovideadditionalassurancethatthosecomponentswhichcontributetothereactortripfunctionareappropriatelyclassifiedassafety-related.Administrativecontrolsconsistingofdocuments,proceduresandinformationhandlingsystemsareusedinthestationtocontrolsafety-relatedactivitiesincludingmaintenance,workrequests(workorders),partsreplacementsandmodifications.Theworkrequestform(AP-5,Page15)containstheclassificationinformation,whichisderivedfromtheequipmentclassificationlist(Q-List)bytheworkrequestoriginatorortheapprovingsupervisor.AQualityAssurancerepresentativecheckstheclassificationagainusingtheequipmentclassificationlist(Q-List)(AP-5,Page6and7).Maintenanceproceduresareintheprocessofbeingreviewedtoassurethatanyclassificationinformationiscorrect.ThereviewofMaintenanceDepartmentmaintenanceproceduresiscomplete.ThereviewofIKCDepartmentmaintenanceproceduresisongoingandwillbecompletedpriortostartup.NineMilePointUnit2hasanongoingprogramtoensurethatvendorinformationiscomplete,currentandcontrolledthroughoutthelifeoftheplant,andappropriatelyreferencedinprocedures.Thisprogramisconductedinthreeparts.ThefirstpartistheAP-3.4.2,0erationsExerienceAssessmentprogramwhichreceives,reviewsandactsonapplicableinformationfromthereactortripsystemsupplierforNineMilePointUnit2.TheinformationconsistsofGeneralElectricServiceInformationLetters(SILs)whichtheIndependentSafetyEngine'eringGroup(ISEG)receivesandreviewstodetermineapplicability.Thesedocumentsproviderecommendationsforequipmentmodification,plantdesignimprovementsorchangestoprocedurestoimproveplantperformance.TheyaredistributedthroughtheGEDomesticApparatusandEngineeringServiceOperations(DAESO)orGENuclearServicesOperationRegionalOfficesandarenormallyfollowedupbydiscussionduringperiodicserviceplanconferences.TDP-5,Administrationof0erationalEnineerinAssessmentItems,providesguidancetotheISEGforthehandlingofOEAitemstoassurecompleteandaccuratecloseoutofpotentialoperatingproblems.Insummary,NiagaraMohawkreceivesSILsfromGeneralElectric.TheIndependentSafetyEngineeringGroupinvestigateseachonetodetermineitsapplicabilitytotheplantandincorporatesaccordingly(via,OperationsExperienceAssessmentProgram).Aresponseformisthencompleted(AttachmentA)andreturnedtoGeneralElectricwhereit'sloggedinandrecorded.AcopyoftheGESILLogisavailablethroughGEforplantreview.ThisLogenablesplantstoreviewtheSILsthathavebeentransmitted,andactonanytheyhaveeithermissedorhaven'treceived'hisprogramprovidesanopenlineofcommunicationbetweenthereactortripsystemvendorandNiagaraMohawk,henceimprovingrelationsbetweenthetwo.
(Cont'd)Inaddition,theOperationsAssessmentProgramaddressesinformationfromtheNuclearRegulatoryCommission(NRC)suchasI&ENotices,CircularsandBulletins,aswellasinformationfromtheInstituteofNuclearPowerOperations(INPO)suchasSignificantEventReportsandSignificantOperatingExperienceReports.Collectively,thesesourcesofinformationprovideacomprehensiveandtimelymechanismtoassurethatinformationpertainingtoproblemswithsafety-relatedequipmentareidentifiedandcorrected.NiagaraMohawkcurrentlyparticipatesintheGeneralElectricOperationsEngineer(OE)Program.ThisresultsinaGEseniorengineerbeingassignedonaresidentbasistotheNineMilePointStation.ThisindividualisSROCertifiedbyGEandhasacompanyseniorengineerposition.ThisresidentengineerprogramprovidesNiagaraMohawkaswellasGEwithanumberofbenefits,suchas:l.ImprovefuelperformancethroughassistancewithcoremanagementandPCIOMRimplementation.2.Contributetoavailabilityandcapacityfactorimprovements.3.Assistingeneralplantoperations,suchasmaintenanceandoperations.4.IncreaseinformationflowbetweenNiagaraMohawkandGeneralElectric.S.AssistwithinterpretationofSILs,backfits,andothermodifications.6.ProvideoperatingplantdatatoGEtoimprovefuturedesigns,backfitdesignsandmodificationrecommendations.7.ProvideaccesstoGEtechnicalexpertiseonaninformalbasis.ThisengineerhasacomputerizedcommunicationsystemconnectingallthestaffedsiteswithintheU.S.Plantstatus,goodpractices,currentplantconcernsandexpediteddatarequestsarehandledontypicallya24to48hourturnaround.GEalsoprovidesthesitewitha(ServiceProjectManager)companyrepresentative.ThisindividualhandlesallcommercialcommunciationbetweenNMPCandGE.Throughtheseparticularprograms,ahighlevelofcommunication,feedbackandequipmentperformanceimprovementisachieved.
e 2.1(Cont.d)ThesecondpartofthisprogramistheAdministrativeControloftechnicalmanuals.ThecurrentmethodusedtocontroltheflowoftechnicalinformationisStone&Webster'sProjectProcedurePP-81,MethodforHandlinSulierTechnicalDocuments.Thisprocedurestatesaspecificprograminwhichtechnicaldocumentsarereceivedandtransmittedtotheappropriatepersonnelforproperchanneling.AlltechnicaldocumentsarereceivedbyStone&Websterwherearesponsibleengineerisassignedtoreviewitandmonitoritsprogressuntilitisissuedasacontrolleddocument.Thisreviewconsistsofadetailedinvestigationtoensurethattheinformationandspecificationsaretechnicallyadequateandapplicabletotheequipmentpurchased.Itisthentransmittedtothesite(NineMilePoint'sDocumentControl)whereitischeckedforcomments,issuedasacontrolleddocumentandmaintainedthroughoutthelifeoftheplant.Thisprocedurewillstayineffectuntilasimilarprogram,suchastheonebeingimplementedatUnit1,NEL-014G,ControlandDistributionofVendorDocumentscanbedeveloped.Thisprocedurewi11definespecificinstructionsonhandlingvendordocumentsreceivedbyNuclearEngineeringandLicensing.Itwillcontainlistsofresponsibilitiesfortheresponsibleengineerenablinghim/hertoensurethatvendordocumentsundergoproperreviewing.Itwillthen,onlyafterallcommentsareresolvedandreviewscompleted,betransmittedtotheAdministrator/EngineeringclerkwhointurnwilllogthedocumentintheMasterDrawingIndex,stampthemanuals"Controlled"inredink,andissueeachasacontrolleddocument.Thisprocedurewillprovideproperguidanceforthecontrolanddistributionofvendordocuments.2.2ThethirdpartoftheprogramisNiagaraMohawk'sTechnicalReviewandControlofmaintenanceproceduresperSection6.5.2ofTechnicalSpecifications,whichisadministeredthroughAP-2,ProductionandControlofProcedures.ThisisauniquefeatureoftheNineMilePointTechnicalSpecificationswhichassuresthatathoroughtechnicalreviewisperformedonallsafety-relatedprocedures,ratherthanacursoryreviewandapprovalbytheSiteOperationsReviewCommitteeascouldoccuratnuclearstationswithStandardTechnicalSpecifications.ThesethreepartsprovideUnit2withanimprovedmethodofevaluatingandcontrollingtechnicalinformationwhichsubsequentlyenhancesNineMile'spositiononsafety.EQUIPMENTCLASSIFICATIONANDVENDORINTERFACE(PROGRAMSFORALLSAFETY-RELATEDCOMPONENTS)PositionLicenseesandapplicantsshallsubmit,forstaffreview,adescriptionoftheirprogramsforsafety-relatedequipmentclassificationandvendorinterfaceasdescribedbelow:1.Forequipmentclassification,licenseesandapplicantsshalldescribetheirprogramforensuringthatallcomponentsofsafety-relatedsystemsnecessaryforaccomplishingrequired
2.2(Cont'd)2.2.1.1safetyfunctionsareidentifiedassafety-relatedondocuments,procedures,andinformationhandlingsystemsusedintheplanttocontrolsafety-relatedactivities,includingmaintenance,workordersandreplacementparts.Thisdescriptionshallinclude:Thecriteriaforidentifyingcomponentsassafety-relatedwithinsystemscurrentlyclassifiedassafety-related.Thisshallnotbeinterpretedtorequirechangesinsafetyclassificationatthesystemslevel.NMP2currentlydoesnothaveaprogramforclassifyingsubcomponentsofsafety-relatedcomponents.Allsubcomponentsofsafety-relatedcomponentsareconsideredsafety-related.NMP-2utilizesthequalitygroupclassificationsystemforclassifyingthewater,steam,andradioactivewastecontainingcomponentsimportanttothesafetyofwater-coolednuclearpowerplants.ThissystemestablishedbyNRCRegulatoryGuide1.26,"QualityGroupClassificationandStandards,"definestheQualityGroupClassificationSystemconsistingoffourQualityGroupsA,8,C,andD.ThedefinitionofQualityGroupA(Class1)isprovidedby10CFR50.2(V)under"ReactorCoolantBoundary".ThedefinitionsofGroups8,C,andDareprovidedbyRegulatoryGuide1.26.NiagaraMohawk'sarchitectengineer,Stone&Webster,usedthisguidetodevelopadetailed"EquipmentandStructureClassificationList"locatedinSection3.2(Classificationof'tructures,Systems,andComponents)oftheFSAR.Thissectionstatesthat,"SeismicCategoryIstructures,systemsandcomponentsarenecessarytoensure:1.Theintegrityofthereactorcoolantpressureboundary(RCPB).2.Thecapabilitytoshutdownthereactorandmaintainitinasafeshutdowncondition.3.Thecapabilitytopreventormitigatetheconsequencesofaccidentsthatcouldresultinpotentialoffsiteexposurescomparabletotheguidelineexposuresof10CFR100."Thecriteriausedforidentifyingequipmentassafety-relatedondocuments,drawings,andinformationhandlingsystemsisStone&Webster'sprocedureC-3,EuimentIdentificationCodes.Thisproceduredescribesaformatandapplicationbywhichtheequipmentisidentifiedinsuchamannertoallowcontrolduringallphasesofplantdesignandconstruction.Eachpieceofequipmentisidentifiedbyanequipmentcodenumber.Thiscodenumberisdividedintwobyeitheranasterisk(*)forsafety-relatedequipment,oradash(-)forallotherequipment.Thisprovidesasystematicwayinwhichsafety-relatedequipmentcanbeidentifiedbyoperatingpersonnelinquickconcisemanner.Therefore,NMP2meetstheintentofSection2.2.1.1.
I Adescriptionoftheinformationhandlingsystemusedtoidentifysafety-relatedcomponents(e.g.computerizedequipmentlist)andthemethodsusedforitsdevelopmentandvalidation.NMP2ResonseThecurrentlistingofsafety-relatedequipmentisprovidedintheQ-List,Table3.2-1oftheFSAR.Currently,thisdocumentisbeingusedbyplantandengineeringpersonneltoidentifysafety-relatedcomponents.AsmentionedinSection2.1,ataskiscurrentlyunderwaytoupgradethedetailsandaccessibilityoftheequipmentclassificationlist.Thisupgradeisdescribedasfollowsandwillbeimplementedwhenthedataisfullyvalidated.TheInformationHandlingSystemthatwillbeusedtoidentifysafety-relatedcomponentsistheMasterEquipmentList(MEL).TheMELisacomputerdatabasewhichwillultimatelyconsistofon-lineinformationonallequipmentinstalledatNMP2.Thisdatabaseformsthenucleusofaninformationsystemthattiesengineeredcomponentattributesto(1)installedcomponentattributes,(2)activecomponentdocuments,(3)sparepartsnecessarytomaintaincomponents,and(4)archivedcomponentdocuments.Eventually,itwillformanoperationalauthorityfilewhichinterfaceswithothercomputerdatabaseswhichtrackscheduledandunscheduledmaintenance,equipmentqualificationrequirements,in-serviceinspections,andmodificationsofplantcomponents,thusensuringconfigurationintegrityforNMP2aswellasreadyaccessforstationsupervision.TheMELwasdevelopedfromallmajorexistingcomputerizeddesigninformationsystemsoncables,raceways,equipment,pipelinessupportsetc.,andtheni.ntegratedintoonedatabase.ThedesigninformationprovidedbytheNSSSvendorandA/EwasdevelopedfromengineeringevaluationsperformedbyGEandStone5WebsterengineersusingthecriteriaofFSARSection3.2.NiagaraMohawkisintheprocessofreviewingaProjectGuidelineProcedurethatwillprovideinstructionsforthecontrol,useandupdatingtheMELsystem.Section6.1ofthisprocedureidentifiesaspecificModificationGroupwho'sresponsibilityistoinput,modifyandverifyinformationwithintheMELdatabase.Theyaretheonlyindividualsauthorizedtomodifydatabaseinformation.ThisisdoneonlyunderthedirectsupervisionoftheLeadModificationEngineer.IfandwhenauserbecomesawareoftheinformationpertainingtoplantequipmentwhichisnotpresentintheMEL,isanauthorizeddatafield,orisinconflictwithexistingMELdata,he/sheisrequiredtofileaMELDataInputForm.Thisformallowsthemodificationgrouptoinvestigatenewadditionsandcorrectionsforverificationandvalidation.Iftheinformationisvalid,themodificationengineersigns-offontheinputformandachangeismadetothedatabase~
ValidationoftheMELforsafety-relatedcomponentsisaccomplishedonasystembasisbyanextensivecheckofthecomponentidentificationnumberagainstdrawings,existingdatabases,testinginformation,namepl'ateserialnumbersandifnecessary,physicalinspectionintheplant.Thiseffortis.currentlycontinuing.PersonnelusingtheMELdatabasewillhaveaccesstoanumberofterminalsavailableatseverallocationsthroughouttheplant.Selectedterminalswillhaveprintersavailableenablingtheusertomake"hard"copiesofrequestedinformation.Inaddition,aMELusersmanualwillbemadeaccessibletotheusertoassistinusingtheterminals.Adescriptionoftheprocessbywhichstationpersonnelusethisinformationhandlingsystemtodeterminethatanactivityissafety-relatedandwhatproceduresformaintenance,surveillance,partsreplacementandotheractivitiesdefinedintheintroductionto10CFR50,Appendix8,applytosafety-relatedcomponents.NMP2ResonseThefollowingisadescriptionoftheprocessofdeterminingifanactivityissafetyrelated.ThesupervisorofthedepartmentresponsiblefortheactivityhastheresponsibilitytoutilizetheEquipmentClassificationList(Q-List)todeterminetheequipmentclassification.DocumentssuchasworkrequestsandpurchaserequisitionsarereviewedandapprovedbytheQualityAssuranceDepartment.ActivitiessuchassurveillanceorpreventativemaintenancearecoveredbyprocedureswhicharereviewedandapprovedperSection6.5.2oftheUnit2TechnicalSpecifications.Theseattributesarespecifiedinvariousadministrativeprocedurescurrentlyinplace.ThefinaladministrativecontrolbeforeworkoccursisapprovedbytheShiftSupervisor.Basedonthetraining,experienceandknowledgeofTechnicalSpecificationsrequiredtofilltheposition,theShiftSupervisorcandetermineifthecorrectpracticesaretobeused.Thiscontrolincludessign-offsintheprocedures,workrequestsandmarkups(tags)tobeused.ItistheintentoftheprocessatNineMilePointUnit2tohavechecksandbalancesonthesystemtoassurethatanerroronthepartof'anindividualwillnotresultin"non-safetyrelatedpractices"beingappliedtosafety-relatedequipment.Adescriptionofthemanagementcontrolsutilizedtoverifythattheproceduresforpreparation,validationandroutineutilizationoftheinformationhandlingsystemhavebeenfollowed.NMP2ResonseSafety-relatedactivitiesaregovernedbyvariousadministrativecontrolswhichimplementtheQualityAssuranceProgram.AdherencetotheQualityAssuranceProgramismonitoredprimarilythroughtheuseofauditsandinspections.Theseauditsandinspectionsencompassed 0
(Cont'd)thevarioussafety-relatedactivitiesandareperformedatvariousfrequencies.Forexample,maintenanceactivitiesonsafety-relatedequipmentaresubjecttoqualityassuranceinspectionsonaroutinebasis.Otherauditsorinspectionsareperformedlessoftenbutcoveralongerperiodofoperationoractivity.Itemsofnon-complianceidentifiedasaresultoftheseauditsandinspectionsaredocumentedinaccordancewithprovisionsofthequalityassuranceprogramandarecarriedasopenitemsuntilresolved.TheProjectGuildlineProcedure(ManagementControl)forutilizingtheMasterEquipmentList(MEL)hasbeendescribedinSection2.2.1.2.ThisprocedurewillbegovernedbytheQualityAssuranceProgramtoassurevalidationandcomplianceofstandards.Ademonstrationthatappropriatedesignverificationandqualificationtestingisspecifiedforprocurementofsafety-relatedcomponents.Thespecificationsshallincludequalificationtestingforexpectedsafetyserviceconditionsandprovidesupportforthelicensees'eceiptoftestingdocumentationtosupportthelimitsofliferecommendedbythesupplier.NMP2ResnseCurrently,EquipmentQualificationandDesignVerificationareperformedinaccordancewiththeProjectManual.TheProjectManualincludesProjectProcedures(PP),ProjectGuidelines(PG)andotheradministrativedocumentsthatcontrolactivitiesatNineMilePointUnit2.DesignVerificationandEquipmentQualificationrequirementsarespecifiedinproceduresandspecificationsforallsafety-relatedprocureditems.ProjectProcedures3,94andEngineeringAssuranceProcedure3.1describesthereview,controlandupdati.ngofthesespecifications.IndependentreviewisperformedinaccordancewithSectionH.l.e(3)ofPP-3.Asrequiredbytheaforementionedprocedures,thespecificationsincluderequirementsforqualificationtesting,review,receiptandapprovaloftestingdocumentationandvendormanualswhichsupportthelimitsofliferecommendedbythesupplier.Thetesting.documentationandvendormanualsarereviewed,maintenanceandsurveillancedataisextractedinaccordancewithPP-131andtransmittedviaEquipmentQualificationMaintenanceProgramDataSheet(EQMPDS)toNiagaraMohawkProjectEngineering.
(Cont.d)Thisinformation(EQMPDS)istransferredtoonsitemaintenancemanagementforincorporationintomaintenanceproceduresasappropriateinaccordancewithMaintenanceInstructionMI-4.0.AdministrativeProcedureAP-6.1isinthefinalstagesofsignoffandwillbeapprovedpriortofuelload.Onceapproved,itwillcontrolengineeringsupportfordesignmodificationsafterfuelload.Thisprocedurepermitstheuseoftheproject-manualandproceduresdescribedaboveortheNMPCNuclearEngineeringandLicensingprocedureswillbeupdatedandusedwhenapprovedforuseatUnit2.UntiltheNMPCEngineeringProceduresareapprovedforuseatUnit2,theProjectProcedureswillbeimplementedinaccordancewithAP-6.1.AprovisionisalsoincludedinAP-6.1forprocurementofexactreplacements.ExactreplacementsprocuredinaccordancewiththeapplicableNMP2QualityAssuranceProgramTopicalReport(December1985),Sect.7.2.5and/orASME,SectionXI,IWA-7210(a)or(b)maybeinstalledwithoutrecoursetoanewdesignsafetyanalysis.ApplicableprocurementandQualityAssurancerequirementsshallbemetandstationdocumentationofthesereplacementsshallbeupdatedtoprovideacurrentrecordofstationcomponentsandconfiguration.TheNMPCNuclearEngineeringandLicensingProcedurescurrentlyusedatUnit1,whichwillbeupdatedforUnit2DesignVerificationandEquipmentQualification,include:NEL014DNEL015NEL027N.D.100N.T.100.CN.T.015.IControl5DistributionofCalculations,Specifica-tions/SystemDescriptions/DesignVerficationProcurementofMaterialServicesDesignVerificationPlantModificationsEquipmentQualificationCommercialGradeProcurementandDedicationTheseprocedureswillensurethatappropriatedesignverificationandqualificationtestingisspecifiedforprocurementofsafety-relatedcomponents.Theseprocedureswillensurethereceiptoftestingdocumentationwhichsupportsthelimitsofliferecommendedbythesupplier.Licenseesandapplicantsneedonlytosubmitforstaffreviewtheequipmentclassificationprogramforsafety-relatedcomponents.Althoughnotrequiredtobesubmittedforstaffreview,yourequipmentclassificationprogramshouldalsoincludethebroaderclassofstructures,systemsandcomponentsimportanttosafetyrequiredbyGDC-1(definedin10CFRPart50,AppendixA,"GeneralDesignCriteria,Introduction").
(Con't)NMP2ResonseWithrespecttotheequipmentclassificationprograminuseatNiagaraMohawkforstructures,systemsandcomponentsImportanttoSafety,weareparticipatingintheUtilitySafetyClassificationGroupandareseekingagenericresolutiontotheStaff'sconcerninthisregardthroughtheeffortsoftheGroup.Wedonotagreethattheplantstructureandcomponentsimportanttosafetyconstituteabroaderclassthanthesafety-relatedset.Nevertheless,webelievethatnon-safetyrelatedplant=structures,systemsandcomponentshavebeendesignedandaremaintainedinamannercommensuratewiththeirimportancetothesafetyandoperationoftheplant.Forvendorinterface,licenseesand.applicantsshallestablish,implementandmaintainacontinuingprogramtoensurethatvendorinformationforsafety-relatedcomponentsiscomplete,currentandcontrolledthroughoutthelifeoftheirplants,andappropriatelyreferencedorincorporatedinplantinstructionsandprocedures.Vendorsofsafety-relatedequipmentshouldbecontactedandaninterfaceestablished.Wherevendorscannotbeidentified,havegoneoutofbusiness,orwillnotsupplyinformation,thelicenseeorapplicantshallassurethatsufficientattentionispaidtoequipmentmaintenance,replacement,andrepair,tocompensateforthelackofvendorbackup,toassurereliabilitycommensuratewithitssafetyfunction(GDC-1).Theprogramshallbecloselycoupledwithaction2.2.1above(equipmentqualification).Theprogramshallincludeperiodiccommunicationwithvendorstoassurethatallapplicableinformationhasbeenreceived.Theprogramshoulduseasystemofpositivefeedbackwithvendorsformailingscontainingtechnicalinformation.Thiscouldbeaccomplishedbylicenseeacknowledgmentforreceiptoftechnicalmailings.Itshallalsodefinetheinterfaceanddivisionofresponsibilitiesamongthelicenseeandthenuclearandnonnucleardivisionsoftheirvendorsthatprovideserviceonsafety-relatedequipmenttoassurethatrequisitecontrolofandapplicableinstructionsformaintenanceworkonsafety-relatedequipmentareprovided.NMP2ResonseNiagaraMohawkwasanactiveparticipantintheNuclearUtilityTaskActionCommitteeformedtoaddresscontrolandutilizationofinformationregardingsafety-relatedcomponents.AttheoutsettheCommitteerecognizedthatindividualutilitieshavethegreatestexperiencewith,andaremostcognizantof,theapplicationofsafety-relatedequipment.Basedonthisrecognition,theCommitteeinvestigatedthemechanismscurrentlyavailabletofacilitateinformationexchangeamongutilities.Theseincludedtheroutineutility/vendorandutility/regulatorinterchangesandtheSignificantEventEvaluationandInformationNetwork(SEE-IN)andNuclearPlantReliabilityDataSystems(NPRDS)programsmanagedbytheInstituteofNuclearPowerOperations(INPO).Thecommitteeconcludedthatthese
(Cont'd)existingactivities,coupledwithacoordinatedprogramwithineachutility,constitutedanoverallprogramtoensurethedisseminationandutilizationoftechnicalinformationregardingreliabilityofsafety-relatedequipment.AdditionalinformationdescribingthisoverallprogramwasprovidedtotheNuclearRegulatoryCommissioninMarch1984bytheCommittee.AkeyelementofthevendorequipmenttechnicalinformationprogramisautilityprogramtocontributeinformationtotheNPRDSandSEE-INprogramsandtousetheresultsoftheseprograms.TheadministrativecontrolscurrentlybeingimplementedatNineMilePointUnit2containproceduresanddatacollectionrequirementsrelatedtotheseprograms.AP-3.4.2,"0erationsExerienceAssessment",TDP-5,"Administrationof0erationalEnineerinAssessmentItems",andTDP-9,"IndeendentSafetEnineerinGrou"definetheadministrativecontrolsforhandlinginformationfromSEE-IN,NRC,GE,etc.TDP-6,"NuclearPlantReliabilitDataSstem(NPRDS)FailureReortin",describesthestepsusedtoinputdatatoSEE-INviaNPRDS.Theserequirementsprovideassurancethatinformationregardingsafety-relatedequipmentishandledinanefficient,timelymanner.Nospecificchangetotheseexistingadministrativecontrolsisdeemednecessaryatthistime.Aminimumof5dedicatedengineers(comprisingtheISEG)areresponsibleforhandlingtheSEE-INinformation.AnotherdedicatedindividualisresponsibleforcoordinatingNPRDSactivitiesforbothUnit1andUnit2,withtechnicianandclericalassistanceassignedasnecessary.Thisaction,coupledwiththeexistingadministrativecontrols,meetstheintentofSection2.2.2ofGenericLetter83-28addressingvendorinformationandinterface.ThefollowingareresponsestotheNRC'sreviewguidelinesforSection2.2.2:NMPChasobtainedfromINPOastatusontheNPRDSandSEE-INprogramenhancements.Thisletterisattachedtothisresponse.Inaddition,NMPCcontrolscurrentlyinplacewithregardtotheguidelinesfortheSEE-INprogramaredescribedbelow:Guideline:ReportsshouldbegeneratedforpotentialfailurescausedbyfaultyormissingvendorsuppliedinformationorotherEquipmentTechnicalInformation(ETI).SuchoccurrencesshouldbereportedoverNUCLEARNETNORK.Response:TDP-5requiresthatreportsbesubmittedtoINPOviaNuclearNetworkforanyoccurrencewithgenericapplications.PotentialfailurescausedbyfaultyormissingvendorsuppliedinformationorotherEquipmentTechnicalInformation(ETI)wouldfallintothiscriteria.
2.2(Cont'd)Guideline:LicenseeresponseshoulddescribebrieflyhowtheirprogramwillaccomplishtheimplementationresponsibilitiesrecommendedinSection4.1.1oftheNUTAC/VETIPReport.Theseinclude:EstablishmentandmaintenanceofvendorinterfacewithNSSSsupplier.Response:VendorinterfacehasbeenestablishedwithGeneralElectric,theNSSSvendorforUnit2.ThisinterfaceconsistsprincipallyoftheServiceInformationLetter(SIL)program,augmentedbylessformalinformationexchangeprogramssuchasServiceAdviceLettersandTechnicalInformationLetters.Guideline:Haveaprogramofseekingassistancefromothervendorsofsafety-relatedequipmentwhenfoundnecessary.Response:Guideline:Assistanceisroutinelysoughtandobtainedfromvendorsofsafety-relatedaswellasnon-safetyrelatedequipment.Thisassistancerangesfromtelephonecontacttobringingthevendorservicerepresentativeonsitetoassistinservicingthecomponents.Thisisabasicpartofthemaintenanceprogramandisimplementedanytimethatthestaffcannotresolveacomponentperformanceproblemwithexistingproceduresortechnicalmanuals.TechnicalSpecificationoperabilityrequirementsandpost-maintenancetestingrequirementsassurethatcomponentsarenotreturnedtoserviceuntilitisproventhattheycanmeettheirintendedfunction.Therefore,itisnotnecessarytoformalizeaprogramtoseekassistancefromavendorbecauseexistingprogramsindirectlyrequireit.HaveproceduresforprocessingallincomingEquipmentTechnicalInformation(ETI)regardlessofsourcetoassurepromptreview,evaluation,anddistributionofresultssothat:(1)Keypersonnelarepromptlywarnedofpossibleproblems.(2)Neworrevisedinformationisincorporatedintoplantproceduresandprograms.(3)SignificantEquipmentTechnicalInformation(ETI)issharedwithotherutilitiesviaNUCLEARNETNORKreports.
2.2(Cont'd)Response:TheOperationsAssessmentProgram(AP-3.4.2,TDP-5)containtheseattributes.Guideline:(4)AdministrativeproceduresshouldrequirethatplantproceduresatleastreferenceappropriateEquipmentTechnicalInformation(ETI).(5)AppropriateEquipmentTechnicalInformation(ETI)shouldbeincorporatedintotheperformanceandqualityreviewsectionsofsafety-relatedprocedures.Response:Guideline:S-MI-GEN-002,MaintenanceInstructionsforWritinProcedures,andS-IDP-PO,OutlineforI&C
Allworkperformedonsafety-relatedequipmentatNineMilePointUnit2mustbeperformedwithNMPCapprovedprocedures,regardlessofwhetheritisperformedbyNMPCemployeesoroutsidevendorsorcontractors.ConsequentlyallworkisperformedinconformancewithNMPCorNMPCapprovedQAproceduresandcontrols.Guideline:Licenseeresponseshouldshowthatinterfaceshavebeenorarebeingestablishedwithatleasttwoormoremajorvendorsofsafety-relatedequipmentotherthantheNSSS.Examplesofsuchvendorsinclude:dieselgeneratorvendor,switchgearvendor,majorpumpsvendor,orvendorofmotor-operatedvalves.
2.2.2(Cont'd)Response:NMPCstronglyendorsestheNUTACreportonGenericLetter83-28NMPCwillattempttoestablishavendorinterfaceprogramwithtwomajorvendorsofsafety-relatedequipmentotherthantheNSSS.Itisourintentiontodevelopthisrelationshipwiththedieselgeneratorvendor,and/orwiththemajorvendorofmotoroperatorsforvalves,and/orwiththemajorvendorofvalves,and/orwiththevendorofsafety-relatedswitchgear.Thisrelationshipwillbedevelopedexpeditiously,howeverduetouncertaintiesinthewillingnessofthesecompaniestoparticipate,nocommitmentdatecanbespecifiedatthistime.Itshouldbenoted,however,thattheexistingSILprogramcoversthecomponentsintheGEscopeofsupply,whichincludescomponentsinthefollowingmajorsystems:ECCS,includingRCIC;ADS;SLC;RHCU;RPS;Recirculation;Neutronmonitoring,includingRSCS;RRCS;andFuelHandlingamongothers.Thereforetheintentofthisguidelineismetwithoutestablishingtwoadditionalvendorinterfaceprograms.Guideline:Response:LicenseeresponseshouldshowthattheyhavecommittedtoworkwithINPOtoensureaccomplishmentofINPOImplementationResponsibilitiesasdescribedinSections3.2,4.1.2,and4.2.2.1oftheNUTAC/VETIPreport.INPOhaspreparedrevisionstoNPRDSandSEE-INasdescribedintheattachedletter.Guideline:Response:ThevendorinterfaceprogramshouldincludeperiodiccontactwiththeNSSSvendortoassurethatthelatestversionsofmaintenance,test,service,andmodificationrecommendationsareinthelicensee'spossession.TDP-5hasbeenrevisedtorequireannualcontactwithGeneralElectricregardingtheSILprogramandanauditoftheresultstoassurethatalltheSILsareinNMPC'spossession.
2.2(Cont'd)Guideline:Thelicenseeshouldshowthatcontacthasbeenattemptedwithmajorvendorsoftheirsafety-relatedequipmentotherthantheNSSStoestablishcontinuing,periodicinterfaceswiththemforexchangeofservice,test,maintenance,andmodification"information.Evidenceofsuchattemptsandtheirresultsshouldberetainedforaudit.Response:Guideline:Asdescribedabove,NMPCroutinelyconsultsvendorsforthepurposeofexchangeofservice,test,maintenance,andmodificationinformation.However,noattemptwasmadetodevelopaformalvendorinterfaceprogramwithallvendorsofsafety-relatedequipmentbecauseNMPCstronglyendorsestheNUTACreportonGenericLetter83-28,section2.2.2,andconsidersaformalprogramunnecessary.Thevendorinterfaceprogramshoulduseasystemofpositivefeedbacksuchaslicenseeacknowledgementofreceiptoftechnicalinformationmailingstoassurethatlicenseehasreceivedallcurrentinformation.Response:Guideline:TheSILprogramutilizesaSILfeedbackformwhichisusedbyGeneralElectrictoupdateacomputerizedstatuslog.Thisformis.senttoGEatthetimeofcloseoutbyNMPC,notatthetimeofreceipt.TDP-5,asdescribedabove,assures,onanannualbasis,thatNMPChasreceivedallcurrentinformation.Programdescriptionshalldefinetheinterfaceanddescribethedivisionofresponsibilitiesamongthelicenseeandthenuclearandnon-nucleardivisionsoftheirvendorsthatprovideserviceonsafety-relatedequipment.Thisisinterpretedtomeanthatthelicenseeshallremainresponsibleforcontrollingthecontentandapplicationofprocedures,instructions,andqualityassuranceactivitiestomaintenance,test,service,andmodificationworkonsafety-relatedequipmentperformedbyotherthanlicenseeorganizationsandpersonnel.
2.2(Cont'd)Response:Asdescribedabove,allworkperformedonsafety-relatedequipmentatNineMilePointmustbeperformedwithNMPCapprovedprocedures,regardlessofwhetheritisperformedbyNMPCemployeesoroutsidevendorsorcontractors.ConsequentlyallworkisperformedinconformancewithNMPCorNMPCapprovedproceduresandcontrols.NMPCalwaysremainsresponsibleforcontrollingthecontentandapplication.ofprocedures,instructions,andqualityassuranceactivitiestomaintenance,test,service,andmodificationworkonsafety-relatedequipmentperformedbyotherthanNMPCpersonnel.
SI0201GENEIiALELCCTIIICCOMI:ANYIVIANAGER,UTILITYSUPPORTSERVICES175CURTNERAVENUESANJOSE,CA95125M/CS9OAttachmentA(ToSection2.1)SERVICEINFORMATIONLETTERSTATUSRESPONSF-SILNO.pcPROJECT14ACTIONTAKENASOFMODYYR16624CHECKONEUNDERINVESTIGATIONNOTAPPLICABLEDONOTPLANTOIMPLEMENTAI.READYINCOMPLIANCEPLANTOPARTIALLYIMPLEMENTPLANTOFULLYIMPLEMENTPARTIALLYIMPLEMENTED-NOFURTHERACTIONPARTIALLYIMPLEMENTED-PLANTOCOMPLETEFULLYIMPLEMENTFDCOMMENTS:IHANDPRINTEDCOMMENTSMAYBEENTEREDBELOWORUSEREVERSESIDEOFSHEETFORTYPEDCOMMENTS)266096130I.ROMDATE
Section3.1&3.2GenericLetter83-28Post-MaintenanceTesting(SafetyRelatedSystems)
3.15.3.2POST-MAINTENANCETESTINGPositions3.1.1Thefollowingactionsareapplicabletopost-maintenancetesting:LicenseesandapplicantsshallsubmittheresultsoftheirreviewoftestandmaintenanceproceduresandTechnicalSpecificationstoassurethatpost-maintenanceoperabilitytestingofsafetyrelatedcomponentsinthereactortripsystemisrequiredtobeconductedandthatthetestingdemonstratesthattheequipmentiscapableofperformingitssafetyfunctionsbeforebeingreturnedtoservice.NMP2ResonseAP-2,ProductionandControlofProceduresrequiresreviewoftestandmaintenanceproceduresandTechnicalSpecificationstoassurethatpost-maintenanceoperabilitytestingofsafety-relatedcomponentsinthereactortripsystemisconducted.Additionally,thisprocedurerequiresthatthetestingdemonstratesthattheequipmentiscapableofperformingitssafetyfunctionsbeforebeingreturnedtoservice.TheAP-2reviewisconductedintwoparts:1)aninterdisciplinaryreview,and2)acrossdisciplinaryreview.Theinterdisciplinaryreviewistheportionthatinvolvesassuringthatthetestproceduredemonstratesthattheequipmentiscapableofperformingitssafetyfunctions.AlltestsinmaintenanceproceduresandTechnicalSpecifica'tionchangesundergothisreviewpriortoimplementation.S-IDP-PO,OutlineforI&CProceduresandS-MI-GEN-002,Ma>ntenanceInstructionsforNritinProceduresarethetwodepartmentalproceduresthatcontrolthedevelopmentofmaintenanceprocedures.Thesetwoproceduresrequirepost-maintenancetestingandareusedbythereviewertoassurethatappropriatepost-maintenancetestinghasbeenincorporated.Atthistimenotallmaintenanceandtestprocedureshavebeenapproved.Thosethathavebeenapprovedhavebeenreviewedforadequacyofpost-maintenancetestingviatheproceduresdescribedabove.Thosethathavenotyetbeenapprovedwill'ereviewedforadequacyofpost-maintenancetestingwiththesesameadministrativecontrols.ThereforeUnit2hascompliedwiththerequirementsofSection3.1.1forthoseproceduresapprovedtodate,andhasadministrativecontrolsinplacetocomplywiththeserequirementsinthefuture.Further,AP-5,ProcedureforReaircontainsadditionalcontrolstoassurethattheserequirementsaremet.ThesecontrolsaredescribedintheresponsetoSection3.2.1below.
LicenseesandapplicantsshallsubmittheresultsoftheircheckofvendorandengineeringrecommendationstoensurethatanyappropriatetestguidanceisincludedinthetestandmaintenanceproceduresortheTechnicalSpecifications,whererequired.NMP2ResonseVendorandEngineeringreccomendationsarecurrentlybeingreviewedtoensurethatanyappropriatetestguidanceisincludedinthetestandmaintenanceproceduresortheTechnicalSpecifications.AsstatedinSection2.1,theGeneralElectricSILprogramconstitutestheRTSVendorInterfaceProgram.Thepost-maintenancetestingrecommendationscontainedintheSILshavebeenidentifiedandarebeinghandledviatheOperationsAssessmentProgramasdescribedintheresponsetoSection2.1above.Asofthiswriting,approximately90%havebeenreviewed.Afewinstanceshavebeenfoundwhereprocedurechangesarerequired.Thesechangesarebeingtrackedtoassurecompletion.Theremainder(whichnumberunder10)havebeenassignedtoanengineerforincorporationofapplicableinformation.Di.spositionofallofthesewilloccurpriortofuelload.EngineeringrecommendationsareingeneralsenttotheStationSuperintendent,whoassignsthemtotheappropriatedepartmentheadfordisposition.However,documentationofthisprocessisnotformalized,soatthistimeitisnotpossibletostatethestatus.Athoroughsearchandreviewofengineeringtestingrecommendationshasbeeninitiatedandwillbecompletedby12-1-86,withanyproceduremodificationscompletedby1-31-87.Licenseesandapplicantsshallindentify,if'pplicable,anypost-maintenancetestrequirementsinexistingtechnicalspecificationswhichcanbedemonstratedtodegraderatherthanenhancesafety.Appropriatechangestothesetestrequirements,withsupportingjustification,shallbesubmittedforstaffapproval.(Notethataction4.5discusseson-linesystemfunctionaltesting.)NMP2ResonseTechnicalSpecificationshavebeenreviewedforPost-MaintenanceTestingRequirementsthatcanbedemonstratedtodegradesafetyratherthanenhanceit.Nonewereidentified.LicenseesandapplicantsshallsubmitareportdocumentingtheextendingoftestandmaintenanceproceduresandTechnicalSpecificationsreviewtoassurethatpost-maintenanceoperabilitytestingofallsafetyrelatedequipmentisrequiredtobeconductedandthatthetestingdemonstratesthattheequipmentiscapableofperformingitssafetyfunctionsbeforebeingreturnedtoservice.
(Cont'd)NMP2ResonseNiagaraMohawkhasmadeimprovementstoadministrativeandimplementingprocedurestomoreclearlysatisfythePost-MaintenanceTesting(PMT)requirementsofGenericLetter83-28.AP-5"Procedure5...5>>5PMTfollowinganymaintenanceofSafetyRelatedequipment.TDP-8"Post-MaintenanceTestinCriteria"providesguidanceonthetypeoftestingrequiredbasedonthetypeofcomponentandthetypeofmaintenanceperformed.ThisprocessappliestosystemsthathavebeenturnedovertoNMPCfromConstructionandissummarizedasfollows:ThedepartmentsupervisorreceivingtheWorkRequest(AP-5.0,page15)determinesifthedepartmentalprocedureforaccomplishingthemaintenancetask,oranotherdepartmart('s)procedure,incorporatesamaintenancetestthatmeetstherequirementsgiveninTDP-8.Ifso,hedenotestheprocedurenumberontheWR(line¹15)andonthePMTrequirementsline(line37).Ifnot,line¹37isleftblank.Uponcompletionofthework,theWRisreturnedtotheControlRoom,wheretheStationShiftSupervisorortheAssistantShiftSupervisorreviewtheWRincludingline¹37.IftheOperationsDepartmenthasaprocedurewhichmeetsthetestingrequirementsofTDP-8,itisdenotedonline¹37,andperformed.SuccessfulperformanceresultsintheStationShiftSupervisororAssistantStationShiftSupervisoracceptingthesystem/componentforreturntoservice.AnunsuccessfultestresultsintheinitiationofanotherWR.Ifnoprocedureexistsfortestingthesystem/componentinrelationtothemaintenanceperformed,(whichcouldbethecaseforasafetyrelatedcomponentorsystemthatisnotinTechnicalSpecifications)aPMTTestReportiscompletedperAP-5andattachedtotheWR.Generally,thiswillinvolveplacingthecomponentinserviceandwitnessingproperoperation.Further,maintenanceprocedureswhichdonotcontainpost-maintenancetestsgenerallycontainstepstonotifytheappropriatedepartmenttoconductatest.However,theWRistheadministrativecontrol.Thus,NineMilePointUnit2iscurrentlyincompliance.withPost-MaintenanceTestingrequirementsofGenericLetter83-28.LicenseesandapplicantsshallsubmittheresultsoftheircheckofvendorandengineeringrecommendationstoensurethatanyappropriatetestguidanceisincludedinthetestandmaintenanceproceduresortheTechnicalSpecificationswhererequired.
(Cont.d)NMP2ResonseVendorandEngineeringreccomendationsarecurrentlybeingreviewedtoensurethatanyappropriatetestguidanceisincludedinthetestandmaintenanceproceduresortheTechnicalSpecifications.AsstatedinSection2.2.2,theGeneralElectricSILprogramconstitutestheSafetyRelatedSystemsVendorInterfaceProgram.Thepost-maintenancetestingrecommendationscontainedintheSILsandinanyothervendorreccomendationsnotcontainedintechnicalmanualshavebeenidentifiedandarebeinghandledviatheOperationsAssessmentProgram.Asofthiswriting,901.havebeenreviewed.Afewinstanceshavebeenfoundwhereprocedurechangesarerequired.Thesechangesarebeingtrackedtoassurecompletion.Theremainder(whichnumberunder20)havebeenassignedtoanengineerforincorporationofapplicableinformation.Itisexpectedthatdispositionofallofthesewilloccurpriortofuelload.Thestatusofengineeringtestingrecommendationsisgivenintheresponseto3.1.2above.Licenseesandapplicantsshallidentify,ifapplicable,anypost-maintenancetestrequirementsinexistingTechnicalSpecificationswhichareperceivedtodegraderatherthanenhancesafety.Appropriatechangestothesetestrequirements,withsupportingjustification,shallbesubmittedforstaffapproval.NMP2ResonseTechnicalSpecificationshavebeenreviewedforPost-MaintenanceTestingRequirementsthatcanbedemonstratedtodegradesafetyratherthanenhanceit.Nonewereidentified.
Section4.5GenericLetter83-28ReactorTripSystemReliability(SystemFunctionalTesting)
4.5REACTORTRIPSYSTEMRELIABILITY(SYSTEMFUNCTIONALTESTING)Position4.5.1On-linefunctionaltestingofthereactortripsystem,includingindependenttestingofthediversetripfeatures,shallbeperformedonallplants.ThediversetripfeaturestobetestedincludethebreakerundervoltageandshunttripfeaturesonWestinghouse,BEWandGEplants;thecircuitryusedforpowerinterruptionwiththesiliconcontrolledrectifiersonB&Wplants;andthescrampilotvalveandbackupscramvalves(includingallinitiatingcircuitry)onGEplants.NMP2ResonseGenericLetter83-28,Section4.5recommendson-linefunctionaltestingofscrampilotvalvesandscrambackupvalves.AtNineMilePointUnit2,thescrampilotairsystemcontrolsandsuppliesairtooperatethescramvalvesandthescramdischargevolumeventanddrainvalves.Thecontrolairissuppliedthroughtwobackupscram,andtwoRedundantReactivityControlSystem(RRCS)solenoidoperatedairvalvestothescrampilotvalves,attheindividualcontrolroddriveHydraulicControlUnits(HCU)andthescramdischargevolumeventanddrainvalves,pereachoftwoHCUAirHeaders.Thebackupscramvalvesreceivesignalsfromthereactorprotectionsystem,asdothepilotsolenoids,toeachscram,ventanddrainvalve,providingredundancyandincreasingsystemreliability.Intheeventthatthescrampilotvalvesfailtofunction,theactionofthebackupscramvalvesassurethatthecontrolrodsinsert,thus,enhancingthereliabilityofthereactortripfunction.Thebackupscramvalvesarenormallyde-energized,DCsolenoidoperatedvalves.Whenatleastonepairofchannelsensorrelaysinbothtripsystemsde-energize(oneoutoftw'otakentwicelogic),bothbackupscramvalvesolenoidsenergizeandrepositionthebackupscramvalvestoblocktheinstrumentairsupplyandexhaustthescramairheader.Thisactionalonewillcausetheinsertionofallcontrolrods.ThecheckvalvearoundbackupscramvalveBallowsthepilotairheadertobleeddownevenifbackupscramvalveBfailstochangeposition.Thus,thefailureofonebackupscramvalvetooperatewillnotpreventascram,andtheoperationofonebackupscramvalvewillcauseascramoftheonehalfofthecontrolrods.Currenttestingofthescrampilotvalvesisaccomplishedthroughtheexistingsurveillanceprogram.Thesurveillancetests,takent'ogether,functionallytestthetripsystemfromthesensinginstrument,throughthetriplogiccircuitry,tothescrampilotvalves.Thesurveillanceproceduresarewrittentotesttheone-out-of-twotakentwicelogicinsuchamannerthatthechannelsaretestedindependently.Thisallowsone-halfofthenecessarylogicto"makeup,"actuatingtheentiretripchanneluptoandincludingoneoutofthetwoscrampilotvalvesoneverycontrolrod'sscraminletanddischargevalves.
4.5.1(Cont'd)Scramtestingwillbeperformedduringeachoperatingcycle.Thisscramtimetestingdemonstratestheactionofthepilotscramvalvesandscraminletanddischargevalves.Thefrequencyoftestingisasfollows:*1.ForallcontrolrodspriortoTHERMALPOWERexceeding401.ofRATEDTHERMALPOWERfollowingCOREALTERATIONSorafterareactorshutdownthatisgreaterthan120days.2.Forspecificallyaffectedindividualcontrolrodsfollowingmaintenanceonormodificationtothecontrolrodorcontrolroddrivesystemwhichcouldaffectthescraminsertiontimeofthosespecificcontrolrods,and3.Foratleast101.ofthe.controlrods,onarotatingbasis,atleastonceper120daysofPOWEROPERATION.InserieswiththebackupscramvalvesaretwonormallydeenergizedDCRRCSsolenoidoperatedAlternateRodInsertion(ARI)valves.SimilartotheBbackupscramvalve,eachRRCSvalvehasacheckvalveinabypasslinesoitsfailurewillnotpreventtheotherRRCSorthebackupscramvalvesfromdepressurizingitsscramairheader.TheARIfunctionofRRCSisactuatedonfailuretoscramsymptoms,i.e.highreactorvesselpressureorlow-lowreactorwaterlevel.Becauseofthedesignofthesystem,on-linetestingofonebackupscramoroneRRCSvalvewouldresultinafullscramofonehalfthecontrolrods,Thiswouldbeanunacceptablesituationwhichwouldresultinanautomaticoramanualfullscramofallthecontrolrods.Therefore,on-linetestingofbackupscramvalvesorRRCSvalveswillnotbeperformed.However,backupscramvalvesandRRCSvalveswillbetested.4.5.2AplantspecificreliabilitystudywasperformedbyGEinNEDE22157forRRCSandARI.Theresultsofthisstudyshowedthatthesesystemsarehighlyreliable.Plantsnotcurrentlydesignedtopermitperiodicon-linetestingshalljustifynotmakingmodificationstopermitsuchtesting.Alternatestoon-linetestingproposedbylicenseeswillbeconsideredwherespecialcircumstancesexistandwheretheobjectiveofhighreliabilitycanbemetinanotherway.*NOTE:ThisfrequencyiscurrentlyspecifiedintheUnit2TechnicalSpecifications.ThescramtimingprogramwillalwaysbebasedontheTechnicalSpecifications.
(Cont'd)NMP2ResonseAsdescribedin4.5.1,NineMilePointUnit2isnotdesignedforon-linetestingofthebackupscramortheARIvalves.Thecurrentdesignwouldresultinscramofonehalfoftherods,ifoneofthebackupscram,orARIvalveswereenergizedwhileon-line.However,,duetothemultipleredundancyofthesystem,ie.thebackupscramvalvesareredundanttothescrampilotvalves,andarealsoredundanttoeachother,modificationstopermiton-linetestingarenotwarranted.Additionally,theARIvalvesarearedundantscramsystem,utilizingindependentsensorsfromtheReactorProtectionSystemandcapableofcompletingascramwiththetotalfailureofthenormalscramsystem.TheARIvalvesarecontrolledbytheRedundantReactivityControlsystem,whichisalsoredundant.NMPCendorsesthefollowingexcerptfromNEDC-30505"ResponseGuidelinesforNRCGenericLetter83-28"preparedbyGeneralElectricfortheBWROwnersGroup."TheNineMilePointUnit2ReactorProtectionSystemdesigncomplieswithallapplicableregulatoryrequirementsfortheRPS.Theremainderofthisparagraphisasummaryoftheon-linefunctionaltestingandtestingintervalsperformedontheRPS.ConsistentwiththeTechnicalSpecifications,on-linechannelfunctionaltestingisperformedonthemultipleanddiversereactortransienttripsensors[AveragePowerRangeMonitor(APRM)andintermediateRangeMonitor(IRM)Reactortripsignalchannels,andmultipleanddiverseScramDischargeVolumeHighwaterleveltrips).Duringtherequiredtripsensorchanneltestsdiscussedabove,eachscramcontactorwhichactuatesthescrampilotsolenoidvalvesistested.Thesimpleoperationofthescramcontactorsminimizesconcernsofwear,andfrequenttestingassuresthatanyfailuresaredetectedearly.TheScramPilotSolenoidValveswhichareactuatedbythescramcontactorsarealltestedregularly.RedundantElectricalProtectionAssemblies(EPAs)whichprotecttheScramPilotSolenoidValvesfromlowvoltagechattering(andtheassociatedpotentialconsequenceofacceleratedwear)arealsofunctionallytested.ThesesurveillancetestingrequirementsrelatedtotheScramPilotSolenoidValvesassurethattheprobabilityofundetectedfailureofthesesolenoidvalvesissmall.Insummary,thecurrentRPSon-linesurveillancerequirement,inconjunctionwithmultipleanddiversescramsensors,assurethattheprobabilityoffailureof.enoughcontrolrodstopreventscramisnegligible.
(Cont'd)Channelfunctionaltestsareperformedon-lineforthefollowingsensortrips:ReactorVesselDomePressure-HighReactorVesselWaterLevel-LowMainSteamLineIsolationValve-ClosureMainSteamLineRadiation-HighDrywellPressure-HighTurbineControlValveFastClosure,ControlOilPressure-LowTurbineStopValve-ClosureChannelfunctionaltestsarealsoperformedforAPRMsandIRMs.InReferences1and2,itisshownthateachoftheaboveplantvariablesusedtoinitiateaprotectivefunctionisbackedupbyacompletelydifferentplantvariable.Infact,itcanbeseenfromTable1thatforthemostfrequenttransients,scramisinitiatedbythreediversesensorsinallbutonecase(regulatorfailure-primarypressureincreasewhichisintitiatedbytwodiversesensors).Thisindicatesthatadequateredundancyexistsinthedesigntoprovideprotectionagainstmultipleindependentsensorfailures.Also,diversityamongsensortypesreducesthepotentialforcommoncausefailures,failuresduetohumanerror,andincreasesinfailurerateduetowearout.ApictorialrepresentationoftheRPSlogicconfigurationisprovidedinFigure1.Eachsensorchannelfunctionaltestincludesfullactuationoftheassociatedlogic,thetwooutputscramcontactorsineachchannel,andtheindividualCRDscramairpilotvalvesolenoidsfortheassociatedlogicdivision(solenoidsfrombothlogicDivisionAand8arerequiredforscraminitiation).ThemostcrediblefailureswithintheRPSlogicwillde-energizeasetofscramsolenoidswhichcausesahalfscram,i.e.,oneofthetwoscramsolenoidsrequiredforscraminitiationisde-energizedatsomeorallhydrauliccontrolunits.Thesefailureswouldbe"SAFE"failuresthatwouldincreasetheprobabilityofplantshutdown.Thelesscrediblelogicfailureswhichpreventachannelfromde-energizingwillbedetectedduringchannelfunctionaltestincompliancewithTechnicalSpecificationrequirements.Thetestsdescribedaboveensurethatanincreaseinfailurerateduetoawearoutconditionoracommoncausefailurepotentialcouldbedetectedearlyandcorrectiveactiontakenbeforethefailureconditionbecomessystematic.OtherchannelfunctionaltestsincludetestingoftheScramDischargeVolume(SDV)WaterLevel-Hightripandmanualscramtripandtestofthereactormodeswitchintheshutdownpositioneveryrefueling.Thefirsttwotripsinvolveon-linetestingandthelattermodeswitchtestcanonlybeconductedduringreactorshutdown.Themanualscramtripcanbetestedon-linewithoutcreatingascram.
(Cont'd)ThetestingoftheSDVHaterLevel-Hightripisconsideredadequatebasedonthecurrentdesignedredundancyanddiversityincorporatedintothesystem.TherearetwodiverseandredundantsetsoflevelsensorswhichscramthereactorintheunlikelyeventofhighwaterlevelintheSDVduringpoweroperation.Thesetripsaredesignedtoallowsufficientscramwaterdischargevolumegiventhescramtrippointisreached.Reference2concludedthatreactorshutdowncanbeachievedifatleast50'/ofthecontrolrodsinacheckerboardpatternand69Kinarandompatternareinsertedinthecore.Theprobabilityofindependentfailureofenoughrodstopreventshutdownisnegligible.Themostunlikelytypeoffailurewouldbesomecommoncausemechanismthatifundetectedoveralongperiodoftimewouldcauseunsafeshutdown.TheTechnicalSpecificationsurveillancerequirementsadequatelyensurethatafailuremechanismaffectingseveralindividualdrives(consideredtobeveryremote)wouldnotgoundetected.OneofthemajorfeaturesthatensuresthatseveraldrivesdonotfailatonetimeduetowearoutoracommoncauseisthestaggaredmaintenanceandoverhaulofselecteddegradedCRDsorHydraulicControlUnits(HCUs)atrefuelingoutages.Thisensuresamixofdrivesbyage,componentlot,maintenancetimeandservicingpersonnel,andtesting.Thescraminsertiontimetestsinclude,inadditiontodrivetimingandinsertioncapability,atestofoperabilityoftheHCUscraminsertanddischargevalvesincludingassociatedscramairpilotvalves.Asstatedinthepreviousparagraph,therequiredfrequencyoftestinggivenintheTechnicalSpecificationensuresthatasystematicfailuremechanismintheHCUswouldbedetectedearlyenoughandcorrectiveactiontakenbeforetheconditionbecomesacriticalfailurepreventingscram."Therefore,sincethescrampilotvalvesaretestedweeklyduringAPRMhalfscramtests,andsincethebackupscramvalvesandtheARIvalveswillbetestedoncearefuelingcycle,andsincerodscramtimetestingisperformedatonarefuelingcycleormorefrequentlyinaccordancewithStandardTechnicalSpecifications,on-linetestingofthebackupscramandARIvalvesisnotwarranted.ExistingTechnicalintervalsavailabilil.2.3.4,5.intervalsforon-linefunctionaltestingrequiredbySpecificationsshallbereviewedtodeterminethattheareconsistentwithachievinghighreactortripsystemtywhenaccountingforconsiderationssuchas:uncertaintiesincomponentfailureratesuncertaintyincommonmodefailureratesreducedredundancyduringtestingoperatorerrorsduringtestingcomponent"wear-out"causedbythetesting
(Cont'd)Licenseescurrentlynotperformingperiodicon-linetestingshalldetermineappropriatetestintervalsasdescribedabove.Changestoexistingrequiredintervalsforon-linetestingaswellastheintervalstobedeterminedbylicenseescurrentlynotperformingon-linetestingshallbejustifiedbyinformationonthesensitivityofreactortripsystemavailabilitytoparameterssuchasthetestintervals,componentfailurerates,andcommonmodefailurerates.NMP2ResonseNineMilePointUnit2on-linefunctionaltestingandtestingintervalsareperformedconsistentwiththeTechnicalSpecificationswhicharebasedonStandardTechnicalSpecifications.Thefollowingreactortripsarefunctionallytestedon-line.IManualScramHighReactorPressureHighDrywellPressureLowReactorWaterLevelHighWaterLevelScramDischargeVolumeMainSteamLineValvePositionHighRadiationMainSteamLineNeutronFluxIntermediateRangeMonitor(IRM)(whenrequired)AveragePowerRangeMonitorsTurbineValveClosureGeneratorLoadRejectionInaddition,theshutdownpositionofthereactormodeswitchscramfunctionistestedduringrefuelingoutages.Duringthetestingdiscussedabove,thescrampilotsolenoidvalvesaretested,inthatoneofthetwoscrampilotvalveson.everycontrolrodscraminletandoutletvalvesareactivated.Also,overvoltage,undervoltageandunderfrequencyprotectionisprovidedforthereactortripbusincludingpowertothescrampilotvalves.Forthemajortransientsevaluated,thenumberofindependentscramfeatureswhichareavailabletoterminateaparticulartransientarelistedintheresponsetoSection4.5.2above.Therefore,itcanbedemonstratedthatadequateredundancyexistsintheNineMilePointUnit2designtoprovideprotectionagainstmultipleindependentsensorfailures.Further,NMPCparticipatedinandendorsesthe"BWROwnersGroupresponsetoNRCGenericLetter83-28,Item4.5.3"NEDC-30844.ThisdocumentcontainsanalysesperformedbyGeneralElectricthatconcludedthatthecurrenton-linefunctionaltestingintervalsareadequatetoachievehighreactortripsystemavailability.
(Cont'd)Insummary,thecurrentreactorprotectionsystemon-linesurveillanceprogramrequirements,intermsofscopeandtestingintervals,inconjunctionwithmultipleanddiversescramsensorsassurestheprobabilityandreliabilityofthereactortripsystemtofunctiontoeffectcontrolrodinsertionandresultingreactorshutdown.Further,forUnit2anautomaticstandbyliquidcontrolsystemisinstalledwhichprovidesredundantmeanstoshutdownthereactor.
ScramSignals-OrderofOccurrenceInputsFromPressureorDifferentialPressureTransmittersandTripUnitsInputsFrcmInputsFromPressureNeutronPt.uxPositionorMicroSwitchorRadiationContactOpeningSensorsTransient4l4lC4I"U)g404J"lOMmo4lA4l4l0I4l04l4l4l4l4JpaeIJCm04lQOvSl0F44ICI4CLQOCLr40W4lMtaowoCll&IVC0OHOC~0rl4lXplHSIVClosureTurbTrip(withbypass)GeneratorTrip(wit.hbypass)Pres.RegulatorFailure(primarypressureElecfellsu)Pres.IlegulatorFailure(primarypressureincr<<ase)F.W.FlowControl,Failure(reactorwaterinve>>tolyi>>cll.,lse)F.W.FlowCo>>t.rol,Failure(reactorwaterinventoryd<<crease)l.oasoI(:o>>de>>serV,cuumLossofNormalACPower
Figure1RPSRelayLogicConfigurarion(toSecgion4.5)40445QZCg4goaZ4OQSQ4illCillVglOv)C~~ZQ:3m4cv~oZO~58gllcv404558C44a8E~ooCCpno58Clho~Cll$Z~nCyCCgOZP.BCVl8"illill88I-IsI:I.yC5bSsCCOwC4I4ZZZvx>',CIIZZZClIIZZx>aCzIZZ40xICl~<xC')lC'
REFERENCES1.NE00-1-189,"AnAnalysisofFunctionalCommon-ModeFailuresinGEBWRProtectionandControlInstrumentation,"L.G.Frederick,etal,July1970.2."BWRScramSystemReliabilityAnalysis,"W.P.Sullivan,etal,September30,1976(TransmittedinletterfromE.A.Hughes(GE)to0.F.Ross(NRC),"GeneralElectricCompanyATWSReliabilityReport,"September30,1976).