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{{#Wiki_filter:ATTACMMENT1DesignAnalysisOperabilityEvaluationfor857A/B/CGinnaStationRochesterGasandElectricCorporation89EastAvenueRochester,NewYork14649DA-ME-96-096Revision0September20,1996Preparedby:~~DesignEngieer9p~9j,DateReviewedby:IndependentorLeadEngineerDateTECHNICALINPUTFORMEIN857A857B857CKEYWORDSCROSSREFPSSL03COMMENTMOV0erabilitNonePROPRIETARYOTHR5111NoneYESNOXSUPERSEDESNonePage1960'F270297960924PDRADQCK05000244VDa' REVISINTATUHEETRevisionNumberAffectedSectionsDescritionofRevision0all"initialdocumentDesignAnalysisDA-ME-96-096PageiiRevision0
{{#Wiki_filter:ATTACMMENT 1DesignAnalysisOperability Evaluation for857A/B/CGinnaStationRochester GasandElectricCorporation 89EastAvenueRochester, NewYork14649DA-ME-96-096 Revision0September 20,1996Preparedby:~~DesignEngieer9p~9j,DateReviewedby:Independent orLeadEngineerDateTECHNICAL INPUTFORMEIN857A857B857CKEYWORDSCROSSREFPSSL03COMMENTMOV0erabilitNonePROPRIETARY OTHR5111NoneYESNOXSUPERSEDES NonePage1960'F270297 960924PDRADQCK05000244VDa' REVISINTATUHEETRevisionNumberAffectedSectionsDescritionofRevision0all"initialdocumentDesignAnalysisDA-ME-96-096 PageiiRevision0


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
OBJECTIVE


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
==2.0 Toevaluatetheoperability==
ofRHRsystemvalves857A/B/C.ValveBonnetpressurelockingforceswillbeconsidered inthisoperability evaluation.
CONCLUSIONS 2~12.22.32,42.4'13.23.33.43.53.63'ThetotalRequiredThrusttoopenthe857valveswasdetermined tobe8759lbs.Thisconsiders valvebonnetpressurelockingconditions.
TheminimumAvailable ThrustbaseduponIn-situMotor/Actuator capacitytestingis9456lbs.Valves857A/B/Careconsidered operablesincetheavailable thrustexceedstherequiredthrust.TheTotalRequiredThrustof8759lbs.doesnotexceedtheweaklinklimitthrustof9027lbs.Conservatisms associated withthisanalysisarediscussed inSection8.5.Theseconservatisms wouldaddadditional margin,betweentheavailable thrustandtherequiredthrusttoopenthesubjectvalves.Therefore thisanalysisisconsidered bounding.
DESIGNINPUTSDesignCriteria, EWR5111,Revision1.RG&E/MOVATS StaticDiagnostic TestPackage,MOV857A,(M-64.1.2),
dated4/2/92.RG&E/MOVATS StaticDiagnostic TestPackage,(M-64.1.2),
MOV-857A, dated4/26/96.RG&E/MOVATS StaticDiagnostic TestPackage,(M-64.1.2),MOV-857B, dated4/30/96.RG&E/MOVATS StaticDiagnostic TestPackage,(M-64.1.2),
MOV-857C, dated4/29/96.RG&E/MOVATS Diagnostic TestPackagePT-50.19, (DPTest),857A,Dynamictestdated3/22/93,StaticTestdated4/2/92.RG&E/MOVATS Diagnostic TestPackagePT-50.19, (DPTest),857B,DynamicTestdated4/4/92,StaticTestdated4/4/92.DesignAnalysisDA-ME-96-096 Page3Revision0Date91996 3.93.103.113.123.133.144.04.16.0RG&E/MOVATS Diagnostic TestPackagePT-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/MOVATS Diagnostic TestPackage,PT-50.2,(DPTest),860C,DynamicTestdated4/24/90,StaticTestDate3/19/93.Anchor/Darling letter,C.J.BowertoS.Greer,P.O.AP0-96190-1, Rev.0,dated9/19/96.REFERENCES AltranCalculation No.94108-C-1, Rev.0,dated11/1/94.ASSUMPTIONS Noneotherthandescribed inanalysis.
COMPUTERCODES7.0NoneANALYSIS7~17.1.17.1.27.1.3Thetotalrequiredthrust(T~)tolift857A/B/Cofftheseatduringitssafety-related condition willbecalculated utilizing themethodology ofReference 4.1.IThetotalrequiredthrustwillincludebonnetpressurelockingforces.Thiscalculation willreflectthelatestavailable information regarding the857A/B/Cvalves.Thecalculated totalrequiredthrustwillbecomparedtothetest-determined available thrust(T)forthepurposesofanoperability assessment.
DesignAnalysisDA-ME-96-096 Page4Revision0Date91996 TotalRequiredThrust(T):StemDifferential PressureLoad(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:Thisisconservative sincetheweightofthedisc/stem assemblyisassumedtobe50lbs,perRef.4.1;ActualFieldweightmeasurement ofsparedisc/stem assemblywasfoundtobe26lbs.7.2.3~~SealinLoadFFromDesignInputs3.3,3.4,and3.5themeasuredsealingloads(indicated as"unseating thrust-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(indicated as"RunningThrust-opendirection")
forthe857A/B/Cvalvesareasfollows:DesignAnalysisDA-ME-96-096 Page5Revision0


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
ValveMeasuredFpp3.33.43.5MeasuredFpp3.63.73.8857A857B857C247lbs.498lbs.513lbs.5354504007.2.5.'.Aconservative BoundingF~=550lbs,isused.DiscDifferential PressureLoad(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~=Downstream Pressure=2.9psi(Rxside)p=DiscSeatAngle=0'Parallel DiscGateValve)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-96-096 Page6Revision0 Note:p=0.5isboundingfor857B/C,thedataobtainedfrom'A'alvewasindicated tobesuspect(baseduponalowDpusedandnouseofaTorqueThrustCell).Thisvaluewillbereverified duringfutureMOVtesting.DesignInputs3.6,3.7,and3.8reflecttheabovevalvefactorswhicharebaseduponanominalseatdiameterof4.0>>(yielding anareaof12.566in).Thesevalvefactorsdonotconsiderthestemrejection forceorthetorquereactionfactor.Ifthevalvefactorsareadjustedforameanseatdiameterof4.5>>(DesignInput3.14),andthestemrejection forceandtorquereactionfactorareincluded, theadjustedValveFactorvalueswouldbelower,thusfurtherenveloping the0.5value.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(baseduponconservative useof0.2forcoefficient offriction) 7.2.7TotalRequiredForce(TR):Reference 4.1utilizesthefollowing equationtocalculate thetotalforcerequiredtoopenthevalves:TRF+FppF+Fop~+FDesignAnalysisDA-ME-96-096 Page7Revision0


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
Themethodology ofReference 4.1isveryconservative, inthattheDisc/Stem assemblyweightloadandthePackingLoadareincludedinthecalculation oftotalrequiredthrustbytheaboveequation, wheninactuality theseloadsarealreadyincludedintheunseating load(F,~).Thesecondconservatism inthismethodology isthattheunseating force(F...q)isameasuredvaluewhichalreadyconsiders theTorqueReactionFactor(T~).Removingthesetwoconservatisms resultsinacalculated requiredthrustof:Tg=(-913+8582)+770.967.3TR=8759lbs.Available Thrust(T)Available ThrustisobtainedfromIn-situmotor/actuator capacitytests.FromDesignInput3.2the1004voltagethrustcapacitywasmeasuredtobe10,832lbs.Note:Anin-situmotor/actuator capacitytest,wasalsoperformed onvalve860B.The860'sare6"x4"x6"AnchorDarlingParalleldiscgatevalveswithSMB-00-7.5 actuators andareidentical tothe857's.PerDesignInput3.13,theavailable thrustwasmeasuredtobe11,016(at1004voltage,noreduction fortemp.effects).
.'.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
Sincethisvalueisgreaterthanthe857valueof10,832lbs,10,832lbs.willbeusedtobeconservative.
Itshouldalsobenotedthatthesetypeoftestsarenotperformed undercompletemotorstallconditions..
Therefore, therewouldbesomeadditional thrustavailable.
TheIn-situMotor/Actuator capacitytestsincludeconsideration ofstemfactor.Aswaspreviously indicated, the10,832lb.thrustusedforthisanalysiswasforthe857Avalve.Thefollowing stemfactorsareobtainedfromDesignInputs3.6,3.7,and3.8asfollows(Note:theseareforDesignAnalysisDA-ME-96-096 Page8Revision0


8.5.4~~Themaximumsealingloadfromallvalveswasutilized.Thisyieldsaconservativecalculatedtotalrequiredthrust.DesignAnalysisDA-ME-96-096Page11Revision0Date91996 n}}
closeddirection only,noaccuratedataforopendirection isavailable):
ValveClosedStemFactor857A857B857C*0.01170.01070.00897.3.1The'A'alvehasthehighestmeasuredstemfactorinthecloseddirection.
Itwillbeassumedthatitalsohasthehigheststemfactorfortheopendirection.
Therefore, thereisnoreasontoadjustthe10,832lb.valuebytheratioofthestemfactors.FromSection7.2.4addminimumrunningload(conservative) tocalculate thrustavailable atcontrolswitchtrip:7.3.2Tp([gpss)10'32+24711g079lbs.Reduction forequipment error(fromDesignInput3.3,Section4):7.3.3Eg5~744'11g079)+240lbs~ER=876lbs.Tp11g07987610g203lbs.ConsiderReducedVoltageandtemperature effectsR=974(conservative minimumfromDesignInput3.12for857A)FromDesignInputs3.9,3.10,and3.11thetemperature effectreduction is1.5%.FinalAvailable ThrustperIn-situMotor/Actuator capacitytest:T~10'03(~97)(~985)7.4.'.T=9456lbs.Acceptability (Operability)
T=9456lbs.>T~=8759lbs.DesignAnalysisDA-ME-96-096 Page9Revision0
.'.Sincetheavailable thrustfrompreviousin-situmotor/actuator capacitytests;considering equipment error,applicable reducedvoltageandtemperature effectsconsiderations isgreaterthanthecalculated requiredthrusttounseatthevalve(including bonnetpressurelockingloads),the857A/B/Cvalvesareconsidered operable.
Note:PerReference 4.1thelimitingweaklinkthrustvaluewasindicated tobe9027lbs.Since8759lbs.<9027lbs.theweaklinklimitwillnotbeexceededforthesubjectvalves.8.0RESULTS8.1ThetotalRequiredThrusttoopenthe857valveswasdetermined tobe8759lbs.Thisconsiders valvebonnetpressurelockingconditions.
8.2TheminimumAvail'able ThrustbaseduponIn-situMotor/Actuator capacitytestingwasdetermined tobe9456lbs.8.38.48.5Valves857A/B/Careconsidered operablesincetheavailable thrustexceedstherequiredthrust.TheRequiredThrustof8759lbs.doesnotexceedtheweaklinklimitof9027lbsforthesubjectvalves.Conservatisms associated withthisanalysiswhichmakeitbounding, areasfollows:8.5.1Thein-situmotor/actuator capacitytests,performdontwovalvesoutoftheaffectedgroup,werenottakenouttocomplete1004stallconditions.
Therefore, itcanbeassumedthatsomeadditional thrustwouldbeavailable.
8.5.2Theminimumrunningloadmeasuredforallvalvesfromallcurrentas-leftavailable tests,wasusedtodetermine the100%voltageavailable thrust.Thisresultsinanoverall=loweravailable thrustforcomparison.
8.5.3Intermsofareducedvoltage,theminimumforallvalvesandaslightlyconservative valuewasused.Thisresultsinanoverallloweravailable thrustforcomparison.
DesignAnalysis~~DA-ME-96-0,96Page10Revision0
 
8.5.4~~Themaximumsealingloadfromallvalveswasutilized.
Thisyieldsaconservative calculated totalrequiredthrust.DesignAnalysisDA-ME-96-096 Page11Revision0Date91996 n}}

Revision as of 12:46, 29 June 2018

Rev 0 to Design Analysis Operability Evaluation for 857 A/B/C Ginna Station.
ML17264A610
Person / Time
Site: Ginna Constellation icon.png
Issue date: 09/23/1996
From:
ROCHESTER GAS & ELECTRIC CORP.
To:
Shared Package
ML17264A608 List:
References
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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Text

ATTACMMENT 1DesignAnalysisOperability Evaluation for857A/B/CGinnaStationRochester GasandElectricCorporation 89EastAvenueRochester, NewYork14649DA-ME-96-096 Revision0September 20,1996Preparedby:~~DesignEngieer9p~9j,DateReviewedby:Independent orLeadEngineerDateTECHNICAL INPUTFORMEIN857A857B857CKEYWORDSCROSSREFPSSL03COMMENTMOV0erabilitNonePROPRIETARY OTHR5111NoneYESNOXSUPERSEDES NonePage1960'F270297 960924PDRADQCK05000244VDa' REVISINTATUHEETRevisionNumberAffectedSectionsDescritionofRevision0all"initialdocumentDesignAnalysisDA-ME-96-096 PageiiRevision0

OBJECTIVE

2.0 Toevaluatetheoperability

ofRHRsystemvalves857A/B/C.ValveBonnetpressurelockingforceswillbeconsidered inthisoperability evaluation.

CONCLUSIONS 2~12.22.32,42.4'13.23.33.43.53.63'ThetotalRequiredThrusttoopenthe857valveswasdetermined tobe8759lbs.Thisconsiders valvebonnetpressurelockingconditions.

TheminimumAvailable ThrustbaseduponIn-situMotor/Actuator capacitytestingis9456lbs.Valves857A/B/Careconsidered operablesincetheavailable thrustexceedstherequiredthrust.TheTotalRequiredThrustof8759lbs.doesnotexceedtheweaklinklimitthrustof9027lbs.Conservatisms associated withthisanalysisarediscussed inSection8.5.Theseconservatisms wouldaddadditional margin,betweentheavailable thrustandtherequiredthrusttoopenthesubjectvalves.Therefore thisanalysisisconsidered bounding.

DESIGNINPUTSDesignCriteria, EWR5111,Revision1.RG&E/MOVATS StaticDiagnostic TestPackage,MOV857A,(M-64.1.2),

dated4/2/92.RG&E/MOVATS StaticDiagnostic TestPackage,(M-64.1.2),

MOV-857A, dated4/26/96.RG&E/MOVATS StaticDiagnostic TestPackage,(M-64.1.2),MOV-857B, dated4/30/96.RG&E/MOVATS StaticDiagnostic TestPackage,(M-64.1.2),

MOV-857C, dated4/29/96.RG&E/MOVATS Diagnostic TestPackagePT-50.19, (DPTest),857A,Dynamictestdated3/22/93,StaticTestdated4/2/92.RG&E/MOVATS Diagnostic TestPackagePT-50.19, (DPTest),857B,DynamicTestdated4/4/92,StaticTestdated4/4/92.DesignAnalysisDA-ME-96-096 Page3Revision0Date91996 3.93.103.113.123.133.144.04.16.0RG&E/MOVATS Diagnostic TestPackagePT-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/MOVATS Diagnostic TestPackage,PT-50.2,(DPTest),860C,DynamicTestdated4/24/90,StaticTestDate3/19/93.Anchor/Darling letter,C.J.BowertoS.Greer,P.O.AP0-96190-1, Rev.0,dated9/19/96.REFERENCES AltranCalculation No.94108-C-1, Rev.0,dated11/1/94.ASSUMPTIONS Noneotherthandescribed inanalysis.

COMPUTERCODES7.0NoneANALYSIS7~17.1.17.1.27.1.3Thetotalrequiredthrust(T~)tolift857A/B/Cofftheseatduringitssafety-related condition willbecalculated utilizing themethodology ofReference 4.1.IThetotalrequiredthrustwillincludebonnetpressurelockingforces.Thiscalculation willreflectthelatestavailable information regarding the857A/B/Cvalves.Thecalculated totalrequiredthrustwillbecomparedtothetest-determined available thrust(T)forthepurposesofanoperability assessment.

DesignAnalysisDA-ME-96-096 Page4Revision0Date91996 TotalRequiredThrust(T):StemDifferential PressureLoad(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:Thisisconservative sincetheweightofthedisc/stem assemblyisassumedtobe50lbs,perRef.4.1;ActualFieldweightmeasurement ofsparedisc/stem assemblywasfoundtobe26lbs.7.2.3~~SealinLoadFFromDesignInputs3.3,3.4,and3.5themeasuredsealingloads(indicated as"unseating thrust-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(indicated as"RunningThrust-opendirection")

forthe857A/B/Cvalvesareasfollows:DesignAnalysisDA-ME-96-096 Page5Revision0

ValveMeasuredFpp3.33.43.5MeasuredFpp3.63.73.8857A857B857C247lbs.498lbs.513lbs.5354504007.2.5.'.Aconservative BoundingF~=550lbs,isused.DiscDifferential PressureLoad(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~=Downstream Pressure=2.9psi(Rxside)p=DiscSeatAngle=0'Parallel DiscGateValve)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-96-096 Page6Revision0 Note:p=0.5isboundingfor857B/C,thedataobtainedfrom'A'alvewasindicated tobesuspect(baseduponalowDpusedandnouseofaTorqueThrustCell).Thisvaluewillbereverified duringfutureMOVtesting.DesignInputs3.6,3.7,and3.8reflecttheabovevalvefactorswhicharebaseduponanominalseatdiameterof4.0>>(yielding anareaof12.566in).Thesevalvefactorsdonotconsiderthestemrejection forceorthetorquereactionfactor.Ifthevalvefactorsareadjustedforameanseatdiameterof4.5>>(DesignInput3.14),andthestemrejection forceandtorquereactionfactorareincluded, theadjustedValveFactorvalueswouldbelower,thusfurtherenveloping the0.5value.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(baseduponconservative useof0.2forcoefficient offriction) 7.2.7TotalRequiredForce(TR):Reference 4.1utilizesthefollowing equationtocalculate thetotalforcerequiredtoopenthevalves:TRF+FppF+Fop~+FDesignAnalysisDA-ME-96-096 Page7Revision0

Themethodology ofReference 4.1isveryconservative, inthattheDisc/Stem assemblyweightloadandthePackingLoadareincludedinthecalculation oftotalrequiredthrustbytheaboveequation, wheninactuality theseloadsarealreadyincludedintheunseating load(F,~).Thesecondconservatism inthismethodology isthattheunseating force(F...q)isameasuredvaluewhichalreadyconsiders theTorqueReactionFactor(T~).Removingthesetwoconservatisms resultsinacalculated requiredthrustof:Tg=(-913+8582)+770.967.3TR=8759lbs.Available Thrust(T)Available ThrustisobtainedfromIn-situmotor/actuator capacitytests.FromDesignInput3.2the1004voltagethrustcapacitywasmeasuredtobe10,832lbs.Note:Anin-situmotor/actuator capacitytest,wasalsoperformed onvalve860B.The860'sare6"x4"x6"AnchorDarlingParalleldiscgatevalveswithSMB-00-7.5 actuators andareidentical tothe857's.PerDesignInput3.13,theavailable thrustwasmeasuredtobe11,016(at1004voltage,noreduction fortemp.effects).

Sincethisvalueisgreaterthanthe857valueof10,832lbs,10,832lbs.willbeusedtobeconservative.

Itshouldalsobenotedthatthesetypeoftestsarenotperformed undercompletemotorstallconditions..

Therefore, therewouldbesomeadditional thrustavailable.

TheIn-situMotor/Actuator capacitytestsincludeconsideration ofstemfactor.Aswaspreviously indicated, the10,832lb.thrustusedforthisanalysiswasforthe857Avalve.Thefollowing stemfactorsareobtainedfromDesignInputs3.6,3.7,and3.8asfollows(Note:theseareforDesignAnalysisDA-ME-96-096 Page8Revision0

closeddirection only,noaccuratedataforopendirection isavailable):

ValveClosedStemFactor857A857B857C*0.01170.01070.00897.3.1The'A'alvehasthehighestmeasuredstemfactorinthecloseddirection.

Itwillbeassumedthatitalsohasthehigheststemfactorfortheopendirection.

Therefore, thereisnoreasontoadjustthe10,832lb.valuebytheratioofthestemfactors.FromSection7.2.4addminimumrunningload(conservative) tocalculate thrustavailable atcontrolswitchtrip:7.3.2Tp([gpss)10'32+24711g079lbs.Reduction forequipment error(fromDesignInput3.3,Section4):7.3.3Eg5~744'11g079)+240lbs~ER=876lbs.Tp11g07987610g203lbs.ConsiderReducedVoltageandtemperature effectsR=974(conservative minimumfromDesignInput3.12for857A)FromDesignInputs3.9,3.10,and3.11thetemperature effectreduction is1.5%.FinalAvailable ThrustperIn-situMotor/Actuator capacitytest:T~10'03(~97)(~985)7.4.'.T=9456lbs.Acceptability (Operability)

T=9456lbs.>T~=8759lbs.DesignAnalysisDA-ME-96-096 Page9Revision0

.'.Sincetheavailable thrustfrompreviousin-situmotor/actuator capacitytests;considering equipment error,applicable reducedvoltageandtemperature effectsconsiderations isgreaterthanthecalculated requiredthrusttounseatthevalve(including bonnetpressurelockingloads),the857A/B/Cvalvesareconsidered operable.

Note:PerReference 4.1thelimitingweaklinkthrustvaluewasindicated tobe9027lbs.Since8759lbs.<9027lbs.theweaklinklimitwillnotbeexceededforthesubjectvalves.8.0RESULTS8.1ThetotalRequiredThrusttoopenthe857valveswasdetermined tobe8759lbs.Thisconsiders valvebonnetpressurelockingconditions.

8.2TheminimumAvail'able ThrustbaseduponIn-situMotor/Actuator capacitytestingwasdetermined tobe9456lbs.8.38.48.5Valves857A/B/Careconsidered operablesincetheavailable thrustexceedstherequiredthrust.TheRequiredThrustof8759lbs.doesnotexceedtheweaklinklimitof9027lbsforthesubjectvalves.Conservatisms associated withthisanalysiswhichmakeitbounding, areasfollows:8.5.1Thein-situmotor/actuator capacitytests,performdontwovalvesoutoftheaffectedgroup,werenottakenouttocomplete1004stallconditions.

Therefore, itcanbeassumedthatsomeadditional thrustwouldbeavailable.

8.5.2Theminimumrunningloadmeasuredforallvalvesfromallcurrentas-leftavailable tests,wasusedtodetermine the100%voltageavailable thrust.Thisresultsinanoverall=loweravailable thrustforcomparison.

8.5.3Intermsofareducedvoltage,theminimumforallvalvesandaslightlyconservative valuewasused.Thisresultsinanoverallloweravailable thrustforcomparison.

DesignAnalysis~~DA-ME-96-0,96Page10Revision0

8.5.4~~Themaximumsealingloadfromallvalveswasutilized.

Thisyieldsaconservative calculated totalrequiredthrust.DesignAnalysisDA-ME-96-096 Page11Revision0Date91996 n

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