Rev 0 to Design Analysis Operability Evaluation for 857 A/B/C Ginna Station.| ML17264A610 |
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Ginna  |
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09/23/1996 |
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ROCHESTER GAS & ELECTRIC CORP. |
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| ML17264A608 |
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| DA-ME-96-096, DA-ME-96-096-R00, DA-ME-96-96, DA-ME-96-96-R, NUDOCS 9609270297 |
| Download: ML17264A610 (17) |
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[Table view] |
Text
ATTACMMENT1DesignAnalysisOperabilityEvaluationfor857A/B/CGinnaStationRochesterGasandElectricCorporation89EastAvenueRochester,NewYork14649DA-ME-96-096Revision0September20,1996Preparedby:~~DesignEngieer9p~9j,DateReviewedby:IndependentorLeadEngineerDateTECHNICALINPUTFORMEIN857A857B857CKEYWORDSCROSSREFPSSL03COMMENTMOV0erabilitNonePROPRIETARYOTHR5111NoneYESNOXSUPERSEDESNonePage1960'F270297960924PDRADQCK05000244VDa' REVISINTATUHEETRevisionNumberAffectedSectionsDescritionofRevision0all"initialdocumentDesignAnalysisDA-ME-96-096PageiiRevision0
OBJECTIVE2.0ToevaluatetheoperabilityofRHRsystemvalves857A/B/C.ValveBonnetpressurelockingforceswillbeconsideredinthisoperabilityevaluation.CONCLUSIONS2~12.22.32,42.4'13.23.33.43.53.63'ThetotalRequiredThrusttoopenthe857valveswasdeterminedtobe8759lbs.Thisconsidersvalvebonnetpressurelockingconditions.TheminimumAvailableThrustbaseduponIn-situMotor/Actuatorcapacitytestingis9456lbs.Valves857A/B/Careconsideredoperablesincetheavailablethrustexceedstherequiredthrust.TheTotalRequiredThrustof8759lbs.doesnotexceedtheweaklinklimitthrustof9027lbs.ConservatismsassociatedwiththisanalysisarediscussedinSection8.5.Theseconservatismswouldaddadditionalmargin,betweentheavailablethrustandtherequiredthrusttoopenthesubjectvalves.Thereforethisanalysisisconsideredbounding.DESIGNINPUTSDesignCriteria,EWR5111,Revision1.RG&E/MOVATSStaticDiagnosticTestPackage,MOV857A,(M-64.1.2),dated4/2/92.RG&E/MOVATSStaticDiagnosticTestPackage,(M-64.1.2),MOV-857A,dated4/26/96.RG&E/MOVATSStaticDiagnosticTestPackage,(M-64.1.2),MOV-857B,dated4/30/96.RG&E/MOVATSStaticDiagnosticTestPackage,(M-64.1.2),MOV-857C,dated4/29/96.RG&E/MOVATSDiagnosticTestPackagePT-50.19,(DPTest),857A,Dynamictestdated3/22/93,StaticTestdated4/2/92.RG&E/MOVATSDiagnosticTestPackagePT-50.19,(DPTest),857B,DynamicTestdated4/4/92,StaticTestdated4/4/92.DesignAnalysisDA-ME-96-096Page3Revision0Date91996 3.93.103.113.123.133.144.04.16.0RG&E/MOVATSDiagnosticTestPackagePT-50.19(DPTest),857C,DynamicTestdated3/21/93,StaticTestdated4/3/92.RG&EMOVThrustCalculation,857A,dated3/8/96.RG&EMOVThrustCalculation,857B,dated3/8/96.RG&EMOVThrustCalculation,857C,dated3/8/96.RG&EI/OJ.E.PachertoB.Flynn,"MOVs857A,B,andCVoltages",dated9/17/96.RG&E/MOVATSDiagnosticTestPackage,PT-50.2,(DPTest),860C,DynamicTestdated4/24/90,StaticTestDate3/19/93.Anchor/Darlingletter,C.J.BowertoS.Greer,P.O.AP0-96190-1,Rev.0,dated9/19/96.REFERENCESAltranCalculationNo.94108-C-1,Rev.0,dated11/1/94.ASSUMPTIONSNoneotherthandescribedinanalysis.COMPUTERCODES7.0NoneANALYSIS7~17.1.17.1.27.1.3Thetotalrequiredthrust(T~)tolift857A/B/Cofftheseatduringitssafety-relatedconditionwillbecalculatedutilizingthemethodologyofReference4.1.IThetotalrequiredthrustwillincludebonnetpressurelockingforces.Thiscalculationwillreflectthelatestavailableinformationregardingthe857A/B/Cvalves.Thecalculatedtotalrequiredthrustwillbecomparedtothetest-determinedavailablethrust(T)forthepurposesofanoperabilityassessment.DesignAnalysisDA-ME-96-096Page4Revision0Date91996 TotalRequiredThrust(T):StemDifferentialPressureLoad(F,~):StemArea(A~)=nD4D;-StemDiameter=1.375"(DesignInputs3.9,3.10,3.11)4F~=PqA,whereP~=BonnetPressure(614.7psi)7.2.2F,~=(614.7)(1.48)=913lbs.StemDiscWeihtForceFg:F=50lbs.Note:Thisisconservativesincetheweightofthedisc/stemassemblyisassumedtobe50lbs,perRef.4.1;ActualFieldweightmeasurementofsparedisc/stemassemblywasfoundtobe26lbs.7.2.3~~SealinLoadFFromDesignInputs3.3,3.4,and3.5themeasuredsealingloads(indicatedas"unseatingthrust-opendirection")forthe857A/B/Cvalvesareasfollows:ValveMeasuredF857A857B857C586lbs.769.8lbs.769lbs.7.2.4.'.BoundingF~is770lbs.PackingFrictionLoad(Fpp):FromDesignInputs3.3,3.4,3.5,3.6,3.7,and3.8theMeasuredPackingFrictionloads(indicatedas"RunningThrust-opendirection")forthe857A/B/Cvalvesareasfollows:DesignAnalysisDA-ME-96-096Page5Revision0
ValveMeasuredFpp3.33.43.5MeasuredFpp3.63.73.8857A857B857C247lbs.498lbs.513lbs.5354504007.2.5.'.AconservativeBoundingF~=550lbs,isused.DiscDifferentialPressureLoad(FDp):DiscArea(A~)=mDD4whereDD=DiscMeanSeatDiameter,FromDesignInput3.14,andFieldMeasurement;Dp4'"Ap=~pp4.5'15.9inp4Fpp=i2'gPUsPDpiAApcos(qh)+@sin(p)where:P~=BonnetPressure=614.7psiP=UpstreamPressure=147psi(RHRPumpSide)P~=DownstreamPressure=2.9psi(Rxside)p=DiscSeatAngle=0'ParallelDiscGateValve)p=FrictionCoefficient=0.5(seebelow)p=0.5BaseduponMeasuredValveFactorsperDesignInputs3.6,3.7,and3.8andqb=0'therefore,p=valvefactor):Valve857A857B857Cp(opendirection)1.18(seenotebelow)0.3560.469DesignAnalysisDA-ME-96-096Page6Revision0 Note:p=0.5isboundingfor857B/C,thedataobtainedfrom'A'alvewasindicatedtobesuspect(baseduponalowDpusedandnouseofaTorqueThrustCell).ThisvaluewillbereverifiedduringfutureMOVtesting.DesignInputs3.6,3.7,and3.8reflecttheabovevalvefactorswhicharebaseduponanominalseatdiameterof4.0>>(yieldinganareaof12.566in).Thesevalvefactorsdonotconsiderthestemrejectionforceorthetorquereactionfactor.Ifthevalvefactorsareadjustedforameanseatdiameterof4.5>>(DesignInput3.14),andthestemrejectionforceandtorquereactionfactorareincluded,theadjustedValveFactorvalueswouldbelower,thusfurtherenvelopingthe0.5value.FDp261471472~90~5159cos(0)+(0.5)(sin0)7.2.6FDp=8582lbs.TorueReactionFactorT~g:DDTRp=1-(2.5.0151)(12)45>>TRp=0.96where:F,=StemFactortakenas0.0151ft(baseduponconservativeuseof0.2forcoefficientoffriction)7.2.7TotalRequiredForce(TR):Reference4.1utilizesthefollowingequationtocalculatethetotalforcerequiredtoopenthevalves:TRF+FppF+Fop~+FDesignAnalysisDA-ME-96-096Page7Revision0
ThemethodologyofReference4.1isveryconservative,inthattheDisc/StemassemblyweightloadandthePackingLoadareincludedinthecalculationoftotalrequiredthrustbytheaboveequation,wheninactualitytheseloadsarealreadyincludedintheunseatingload(F,~).Thesecondconservatisminthismethodologyisthattheunseatingforce(F...q)isameasuredvaluewhichalreadyconsiderstheTorqueReactionFactor(T~).Removingthesetwoconservatismsresultsinacalculatedrequiredthrustof:Tg=(-913+8582)+770.967.3TR=8759lbs.AvailableThrust(T)AvailableThrustisobtainedfromIn-situmotor/actuatorcapacitytests.FromDesignInput3.2the1004voltagethrustcapacitywasmeasuredtobe10,832lbs.Note:Anin-situmotor/actuatorcapacitytest,wasalsoperformedonvalve860B.The860'sare6"x4"x6"AnchorDarlingParalleldiscgatevalveswithSMB-00-7.5actuatorsandareidenticaltothe857's.PerDesignInput3.13,theavailablethrustwasmeasuredtobe11,016(at1004voltage,noreductionfortemp.effects).Sincethisvalueisgreaterthanthe857valueof10,832lbs,10,832lbs.willbeusedtobeconservative.Itshouldalsobenotedthatthesetypeoftestsarenotperformedundercompletemotorstallconditions..Therefore,therewouldbesomeadditionalthrustavailable.TheIn-situMotor/Actuatorcapacitytestsincludeconsiderationofstemfactor.Aswaspreviouslyindicated,the10,832lb.thrustusedforthisanalysiswasforthe857Avalve.ThefollowingstemfactorsareobtainedfromDesignInputs3.6,3.7,and3.8asfollows(Note:theseareforDesignAnalysisDA-ME-96-096Page8Revision0
closeddirectiononly,noaccuratedataforopendirectionisavailable):ValveClosedStemFactor857A857B857C*0.01170.01070.00897.3.1The'A'alvehasthehighestmeasuredstemfactorinthecloseddirection.Itwillbeassumedthatitalsohasthehigheststemfactorfortheopendirection.Therefore,thereisnoreasontoadjustthe10,832lb.valuebytheratioofthestemfactors.FromSection7.2.4addminimumrunningload(conservative)tocalculatethrustavailableatcontrolswitchtrip:7.3.2Tp([gpss)10'32+24711g079lbs.Reductionforequipmenterror(fromDesignInput3.3,Section4):7.3.3Eg5~744'11g079)+240lbs~ER=876lbs.Tp11g07987610g203lbs.ConsiderReducedVoltageandtemperatureeffectsR=974(conservativeminimumfromDesignInput3.12for857A)FromDesignInputs3.9,3.10,and3.11thetemperatureeffectreductionis1.5%.FinalAvailableThrustperIn-situMotor/Actuatorcapacitytest:T~10'03(~97)(~985)7.4.'.T=9456lbs.Acceptability(Operability)T=9456lbs.>T~=8759lbs.DesignAnalysisDA-ME-96-096Page9Revision0
.'.Sincetheavailablethrustfrompreviousin-situmotor/actuatorcapacitytests;consideringequipmenterror,applicablereducedvoltageandtemperatureeffectsconsiderationsisgreaterthanthecalculatedrequiredthrusttounseatthevalve(includingbonnetpressurelockingloads),the857A/B/Cvalvesareconsideredoperable.Note:PerReference4.1thelimitingweaklinkthrustvaluewasindicatedtobe9027lbs.Since8759lbs.<9027lbs.theweaklinklimitwillnotbeexceededforthesubjectvalves.8.0RESULTS8.1ThetotalRequiredThrusttoopenthe857valveswasdeterminedtobe8759lbs.Thisconsidersvalvebonnetpressurelockingconditions.8.2TheminimumAvail'ableThrustbaseduponIn-situMotor/Actuatorcapacitytestingwasdeterminedtobe9456lbs.8.38.48.5Valves857A/B/Careconsideredoperablesincetheavailablethrustexceedstherequiredthrust.TheRequiredThrustof8759lbs.doesnotexceedtheweaklinklimitof9027lbsforthesubjectvalves.Conservatismsassociatedwiththisanalysiswhichmakeitbounding,areasfollows:8.5.1Thein-situmotor/actuatorcapacitytests,performdontwovalvesoutoftheaffectedgroup,werenottakenouttocomplete1004stallconditions.Therefore,itcanbeassumedthatsomeadditionalthrustwouldbeavailable.8.5.2Theminimumrunningloadmeasuredforallvalvesfromallcurrentas-leftavailabletests,wasusedtodeterminethe100%voltageavailablethrust.Thisresultsinanoverall=loweravailablethrustforcomparison.8.5.3Intermsofareducedvoltage,theminimumforallvalvesandaslightlyconservativevaluewasused.Thisresultsinanoverallloweravailablethrustforcomparison.DesignAnalysis~~DA-ME-96-0,96Page10Revision0
8.5.4~~Themaximumsealingloadfromallvalveswasutilized.Thisyieldsaconservativecalculatedtotalrequiredthrust.DesignAnalysisDA-ME-96-096Page11Revision0Date91996 n