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1、无锡化工装备总厂WUXIGENERALCHEMICALEQUIPMENTPLANTPositiveMaterialIdentification(PMI)ProcedureSpecification原材料识别工艺说明(PMIProcedure)1.Application应用：(1).PMIshallbePerformedforallalloymaterialsusedforPressureVessels,shellandTubeExchangers,Towers.所有合金材料制的压力容器，管壳式换热器
2、，塔等应实施PMI。(2).PMIshallbePerformedonVessel(includingExchangers)HeadandshellPlates,nozzle,flanges,materialsforinternalandexternalattachments,channelplates,Tubesheets,manholenozzleplates.Depositedweldmetals,claddingandweldoverlay,otherpartsmaybeidentified
3、atthediscretionoftheOwner.应对容器(包括换热器)封头和壳体板，接管，法兰，内外连接件，管箱板，管板，人孔接管板，熔敷的焊缝金属，复层和堆焊，以及买方指定的其它零件实施PMI。2.ExtentofPMIExaminationPMI检查范围：EquipmentItem设备项目NumberofTesting试验数量1).Plates(includingintegralcladdingonplateMaterials)forPressureretainingcomponents,t
4、ubesheets.受压部件板材(包括整体复合板)，管板OnetestEachcomponentpart(includingshellplate,head、tubesheets,ManholeNozzlePlate,e.g.)每一个组件一个试样，(包括壳板、封头、管板、人孔接管板等)。2).Nozzlepipeandfitting接管和配件OnetestEachPart每一个零件一个试样3).Forgings,includingnozzle,flangesandtubesheets.锻件，包括接管、
5、法兰和管板OnetestEachPart每一个零件一个试样4).MajorloadbearingexternalandinternalattachmentsweldeddirectlytothePressureretainingcomponent(suchasalloysectionofsupport).直接焊到受压件上，主要承载的内、外附件(如支座的合金段)OnetestEachPart每一个零件一个试样5).Tubes换热管Numberoftube:≤2005unitor3% Whichever
6、isgreater 管子数量：＞2006unitor2% 两者中的较大者EquipmentItem设备项目NumberofTesting试验数量6).Boltingandnut 螺栓和螺母OnetestEachPart每一个零件一个试样[ASMESA-193GrB7/GrB7MorEquivalentnationalstandard]notrequire.ASMESA-193GrB7/GrB7M或相当的国标不要求7).PressureretainingweldsandAttachmentwelds受
7、压焊缝和附件焊缝Circumferentialwelds(includingbranch-topipe-welds,branchpipe-to-flangewelds).环缝(包括接管与法兰，接管与接管的环焊缝)。Longitudinalwelds纵焊缝Attachmentwelds附件焊缝Claddingandweldoverlay复层堆焊RepairWelds焊缝返修Note:PMIofalloyweldsshallbeperformedbothontheoutsideandinsidesurf
8、acesoftheweld.Iftheinsidesurfaceisinaccessibleafterwelding,theweldingconsumableshallbeVerified.注：对合金焊缝内、外表面仅应进行PMI。若焊后内表面不能进入检查，则应鉴定焊接消耗材料。Eachweld,withonetestperweldseamforSAW,GMAW,FCAWandonetestper500mm,weldlengthforSMAWandGTAW.每条焊缝(包
