ML17059B562

Rev 1 to Ssflaw Overlay Size.

ML17059B562
Person / Time
Site:	Nine Mile Point
Issue date:	05/16/1997
From:	TRENCH R MPR ASSOCIATES, INC.
To:
Shared Package
ML17059B563	List: ML17059B562 ML17059B568 ML18040A261
References
085-295-02, 085-295-02-R01, 85-295-2, 85-295-2-R1, S14-33M009, S14-33M9, NUDOCS 9705280089
Download: ML17059B562 (28)

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CALC$JgPp~gOILIMPRP.eu.of<~c4,oPlgMPRAssociates,inc.320KingStreetAlexandria,VA22314CALCULATIONTITLEPAGEClientProjectTitleNiagaraMohawkPowerCorporationNMP-1RWCUWeld33-FW-22OverlayDesignSSFLAWOverlaySizePage1of8+r4~u~avmTaskNo.085-9708-295-0CalculationNo.085-295-02Preparer/DateChecker/DateReviewer/DateRev.No.s./hachpg~~r~~c~~~s(ra/pp5//c/'5'Ps/c/ggf~Quf~(r.(q7QUALITYASSURANCEDOCUMENThisdocumenthasbeenprepared,checked,andreviewedinaccordancewiththeQualityAssurancerequirementsof10CFR50AppendixB,asspecifiedintheMPRQualityAssuranceManual.9705280089970519PDRADQCK05000220PPDR H'll c-A~gt4-EgHoolilMPRMPRAssociates,Inc.320NngStreetAlexandria,VA22314of(+RECORDOFREVISIONSCalcuiationNo.085-2952RevisionPreparedByci~DescriptionCheckedByPage2InitialIssueChangedtitleofAttachment1.

gV tiiMXuCalculationNo.085-295-02PreparedByp~~4oP/gMPRAssociates,Inc.320KingStreetAlexandria,VA22314Page3CONTENTSSection1.02.0PURPOSESUMMARYOFRESULTS.~Pae3.0APPROACH4.0CALCULATION5.0OVERLAYLENGTHCALCULATION6.0ATI'ACHMENTS1SSFLAWProgramOutput2ExaminationReportforWeld33-FW-22dated5/15/97 I

CAu5'll-3HOoRkm~Or~~MXRMPRAssociates,Inc.320KingStreetAlexandria,VA22314>oglgCalculationNo.085-295-02PreparedByPage41.0PURPOSEThepurposeofthiscalculationistodeterminethethicknessofanoverlaytobeinstalledatthelocationofWeld33-FW-22intheNMP-1RWCUpipingsystem.2.0SUMMARYTheoverlaysizeis:Thickness:Length:0.25-inchminimum25-inchminimum,centeredonthenozzlesideedgeoftheweldcrown3.0APPROACHIn1988NMPCobtainedcomputerprogramSSFLAW,whichcalculatesoverlaysizesusingthemethodpresentedinReference1.Reference2describestheprogram,itsdevelopment,anduse,andprovidesausermanualfortheprogram.Theprogramperformsthefollowingoperations:SSFLAWassumesthecrackextends360degreesaroundthepipeandpenetratesfullythroughtheoriginalpipewalLThecrackisassumedtostopattheoverlay.

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lXLMPRA.eMPRAssociates,Inc.320KingStreetAlexandria,VA22314CalculationNo.085-295-02PreparedByCheckedByPage5SSFLAWthenusesthestressesappliedtothesectiontodeterminetheoverlaythicknessneededtopreventplasticcollapseofthesection,includingafactorofsafetyof2.77asrequiredbyNUREG-0313,Revision2.4.0CALCULATION4.1PromSSFLAWInutsAppendixAtotheSSFLAWuser'smanual(Reference2)describestheinputsrequiredtoruntheprogram.Therequiredinputsforoverlaysizingarelistedbelow,alongwiththevaluestobeusedinthepI'ograIn.,e'eitIntnindnh.SSFLAWdefaultvaluesfortheseparametersareused.TheprogramcalculatestheseparametersforType304materialattheinputtemperatureofthesystem(discussedbelow).0eratinTemerature.PerReference3,thedesignnozzletemperatureis575'F.Pressure.PerReference3,thedesignpressureofthenozzleis1300psig.PieOutsideDiameterandWallThickness.PerReference3,theweldisinnominal6-inchpiping(6.625-inchactualOD)with0.38-inchminimumwallthickness.

~+~<I4-9Hoa~/LIMPRMPRAssociates,Inc.320KingStreetAlexandria,VA22314CalculationNo.085-295-02PreparedByPage6AliedStresses.StressesarecalculatedinReference4asfollows:AppliedTensileStress;AppliedBendingStress:0.4ksi12.0ksiNotethattheabovestressesincludesecondarystressesduetothermalexpansion.TreatingthermalstressesasprimarystressesisrequiredbyNUREG-0313,Revision2foroverlaysfabricatedfromSMAWweldmetal.PertheSSFLAWusermanual,pressurestressiscalculatedseparatelybytheprogramandsoisnottobeincludedintheinputstresses.NotethatthefollowingparametersarespeciQedforinputintoProgramSSFLAWbutarenotneededfortheoverlaysizingcalculationmethod:'eldTypeResidualStressStateHawOrientation,LengthandDepthServiceIntervalReferenceSourceforAllowableHawSizeTherefore,forProgramSSFLAWrunsmadeinthiscalculation,theinputvaluesfortheseparametersareselectedasdefaultvalues.PromSSFLAWResultsAttachment1presentstheprintoutfromProgramSSFLAWrunfortheaboveinputs.Theresultsshowthatanoverlaythicknessof0.25-inchminimumisacceptablefortheappliedstresses.ProgramSSFLAWwasdevelopedandusedinaccordancewiththeMPRAssociatesQualityAssuranceProgram.

e.~~s'i<seed~iiiMPud'+lcMPHAssociates,Inc.320KingStreetAlexandria,VA22314CalculationNo.085-29542PreparedByCheckedByPage75.0OVERLAYLENGTHCALCULATIONCodeCaseN-504(Reference5)providesthefoHowinginstructionfordeterminingthelengthoftheoverlayrequiredbeyondeachedgeoftheobservedflaws:Length=0.75(R)(t)whereR=outerradiusandt=nominalwallthicknessofpipe.Accordingly,therequiredoverlaylengthbeyondeachendoftheobservedflawsforthis6-inchOD,schedule80pipeis:Length=0.75(6.625"/2)(0.432")=0.9"PerReference6(Attachment2),theobservedlengthoftheindicationis0531-inch(equalto7/16-inchplus3/32-inch).Therequiredlengthisthen:0.531"+2(0.9")=2.33"Use2.5-inchminimumlengthcenteredonthenozzlesideedgeoftheweldcrown.

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85.0REFERENCES

"EvaluationofFlawsinAusteniticSteelPiping,"SectionXITaskGroupforPipingFlawEvaluation(ASMECode),JournalOfPressureVesselTechnology,Volume108,No.3,August1986.2.MPRReportMPR-1037,Revision1,"SSFLAW-AComputerProgramtoEvaluateCracksinStainlessSteelPiping(Version1.1),"April1988.3.SouthwesternEngineeringCompanyDrawing77528,Rev.17,"RegenerativeClean-upHeat4Exchanger"(forRWCUHXND-03).4.MPRCalculation085-295-01,"NMP-1RWCUWeld33-FW-22OverlayDesign,StressesforInputtoProgramSSFLAW,"Revision0.5.ASMEBoilerAndPressureVesselCodeCaseN-504,datedApril30,1992.6.NMPCRadiographicExaminationReportforWeld33-FW-22dated5/15/97.PncludedasIAttachment2.]

C.4m5J4-ggHora1MPRMPRAssociates,Inc.320KingStreetAlexandria,VA22314/DOP/$CalculationNo.085-295-02PreparedByMcs~CheckedByPage1ATTACHMENT1SSFLAWProgramOutput I

ÃQeu0DOCNOO$S'.ZtS'-ozOft$SSFLAWVersion1.1(April5,1988)ATI'ACHMENTOFOverlaySizingCalculationResults33-FW-22WeldOverlaySizingDate:5/16/97PipeMaterial:Type304StainlessSteelSm=16.67ksiSy=18.50ksiPipeGeometry:OutsideDiameter=WallThickness=6.625in0.380inSystemOperatingConditions:Pressure=1300.0psigTemperature=575.0FTensileStress(ksi)BendingStress(ksi)PressureStress(ksi)NormalConditions0.4012.005.02FaultedConditions0.4012.005.02RequiredWeldOverlayDimensions:OverlaThickness=0.233inverlayLength=1.

WMPR5'I4-39<o/2MPRAssociates,Inc.320KingStreetAlexandria,VA22314CalculationNo.085-295-02PreparedByCheckedByPage1ATTACHMENT2RadiographicExaminationReportforWeld33-FiV-22dated5/15/97

nI..y,lr~~~t4L.CS(4-33HLIQada!r't3Opl4RADIOQRAPEICEXAMINATIONREPORTOOC.NOAWACHMenZSHEET~OFTNIAGARAICMOII*IIIKRTExAMINATloNREPoltTKineMllePointUnitlSO/bwg.:Syatem:+i~~PNDSReport:Page1otJWorkDocument:ExamItem:Procedure:/01'tC.RadiationSourceandSIN:~c4llstsrl~ITypo:C./+5+No.olCurios:tI~KY:Mn:BaaeMetalThlckneae!-ObJecttoFilmDlatance:-5'4WeldThickneee!FilmLoad:Ellldl~Douhle~OtherPipsQlamelaror.Prooeaslnp:lisnusl~AutoWeldLeepth:'yensttometsrNumheWellflilpPresses(seiliood:penetrsmelsrMstarlalndNo.:rtdt~~>>sLocation:FilmSide!""-riShimMaterialandThlckneaaSack:TechniqueQeedro/2GeometricVnaharpnoee(VG)0-S.Z./04>>/()ee()MIio00IACH'0CHAC'hIQCOHIo~t~t0QCC0doCIf0~r0CJCCooleIC~eCOHCcVHC4,I00~dWuQClHCEuL0~r6EeC0rotHCOHIeEsCMm0~CEtarEiCV0CycxEllmJahmchrrf<<dh1$C)Ctsv~vrtr~4W~0011ndtW<HCvrdpgJEet,Q5(1CiN)Qhct.uT5"'t~c.'IQrmsr)4.~I$Jhdeufo(,Otal,0M~lMcSThOV'ttlAcceotaytceCriteria!Examiner1:'~4'xaminerReviewer:ANtt~ExamItemtable?YeaNot.evet~bate!t.evel~Date!~'~PrevloueWctsgFLevel:halo:PalsRsvleusdyYeethnNoD~te:mavin>>sr

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