装配检查规程（英）qep

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1、FITTINGEXAMINATIONPROCEDURE43210REV.NO・PREPAREDBYREVIEWEDBYAPPROVEDBYACCEPTEDBYFITTINGEXAMINATIONPROCEDURELGeneral1.1ThisprocedureisapplicabletothepressurevesselswhicharefabricatedinaccordancewithASMECodeSectionTHDivision1.1.2Theexaminershallbeexperienced.Thenaturalorcorrecteda

2、cuityofexaminershallbecapableofperformingoperationspecifiedbythisprocedure.1.3Thedirectvisualexaminationisemployedbythisprocedure.1.4Ontheexaminationfieldtheilluminatorshallbesufficientthattheexaminationcanbeperformedwell.1.5Themeasurementandequipmentusedforexaminationshallbecal

3、ibratedandbeusedintheeffectiveperiod.1.6Anexaminershallexaminethematerialmarkingtomakesurethattheintendedmaterialisused.2.ExaminationRequirement2.1Alignmentofsectionatedgestobebuttweldedshallbesuchthatthemaximumoffsetisnotgreaterthantheapplicableamountfortheweldedjointcategoryun

4、derconsideration,asseparatelylistedinfollowingtablespermaterialsused・Thesectionthicknesstisthenominalthicknessofthethinnersectionatthejoint.Table1isappliedforthepressurevesselconstructedofcarbonorlowalloysteel,exceptferritesteelswithtensilepropertiesenhancedbyheattreatment.Table

5、2isforthepressurevesselconstructedofferriticsteelswithtensilepropertiesenhancedbyheattreatment.TABLE1SectionThickness,in.JointCategonesAB,C,andDUpto1/2,incl.1/4t1/4tOver1/2,to3/4,incl.1/8in.1/4tOver3/4to11/2,incl.1/8in.3/16in.Over11/2to2,incl.1/8in.1.8tOver2Lesserofl/16tor3/8in.

6、Lesserof1/8tor3/4in.TABLE2SectionThickness,in.JointDirect!onLongitudinalCircumferentialUpto1/2,mcl.0.2t0.2tOver1/2,to15/163/32in0.2tOver15/16to11/23/32in13/16in.Over11/23/32in.Lesserof1/8tor1/4in.2.1Anyoffsetwithintheallowabletolerancespecifiedinthetable1aboveshallbefairedatathr

7、eetoonetaperoverthewidthofthefinishedweld,orifnecessary,byaddingadditionalweldmetalbeyondwhatwouldotherwisebetheedgeoftheweld.Suchadditionalweldmetalshallbesubjecttothefollowingrequirements.2.1.1UsingaQualifiedWPS.222Allweldmetalbuildupmustbeexaminedoverthefullsurfaceofthedeposi

8、tbyPTorMTexaminationtotherequirementsofAppendix