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1、DOC.NO.：QCND-012CONTROLLED□UNCONTROLLED□COPYNO.:RTEXAMINATIONPROCEDURE543210陳鑫亮2015.01.06錢輝2015.01.06REV.NO.PREPAREDBYAPPROVEDBYNDELEVELⅢ1ASMEPressureVesselProcedureDoc.No.QCND-014MTExaminationProcedureRev.No.5Page12/51General1.1Thisprocedureisappliedtothex-rayradiographicexaminationof
2、buttweldsforpressurevesselsconstructedinaccordancewithASMECodeSectionⅧDiv1,2010ED.and2011AD.1.2Thisprocedureshallbesupplemented,whennecessary,withtheexaminationinstructionsdefiningmorespecificvariables,whichwillbepreparedbyNDELevelⅢpersonnel.2QualificationofExaminationPersonnel2.1Anype
3、rsonengagedinradiographicexaminationshallbequalifiedandcertifiedasaradiographicexaminerinaccordancewithBAOSE’s“WrittenPracticeforNDEPersonnelTraining,QualificationandCertification”(QCND-011).2.2TheNDELevelⅠshallreceivethenecessaryinstructionorsupervisionfromacertifiedNDELevelⅡorLevelⅢE
4、xaminer.TheNDELevelⅡshallreceivetheinstructionorsupervisionfromaNDELevelⅢExaminer.2.3Accordingtotherespectiveresponsibilityrange,allexaminersshallcompletetheexaminationconformingtothereferencingASMECodeSections,standardsandwritteninstructions.Theyshallassuretheworkingquality.3Equipment
5、,ToolsandMaterialsTheLevelⅡExaminershallselecttheequipment,toolsandmaterialstoassurethattheyareincompliancewiththefollowingconditionsandtherequirementoftheexaminationinstruction.3.1Oneofthex-rayequipmentshallbeselectedfromTable1.Table1TypeManufactureMax.TubeVoltage(KVp)Max.TubeCurrent(
6、mA)FocalSize(mm2)Permittedmax.Steelthickness(mm)XXQ1605Dandong16050.89XXG2505Dandong2505239XXQ3005Dandong30053.550XXH3205Dandong32053.5503.2FilmAGFATESTIXC7filmshallbeusedinourCompany.Dependingonthex-raypenetrationthickness,othersuitableindustrialradiographicfilmshallbeselected.Whenusi
7、ngtwofilmsmethod,twodifferenttypesoffilmshallbeselected.3.3IntensifyingScreenAsuitableleadscreenshallbeselectedfromTable2.3.4DensitometerandStepWedgeFilmThedigitaldensitometerlistedinTable3shallbeusedforjudgingradiographdensity.Thedensitometershallbecheckedagainstacalibratedstepwedge
