ASME无损检测工艺(PT)

LIQUIDPENETRANTEXAMINATIONPROCEDURENDE07-05Revision0Date30/04/2007Page1of10LIQUIDPENETRANTEXAMINATIONPROCEDURE3210REVISIONPREPAREDBYREVIEWEDBYAPPROVEDBYAILIQUIDPENETRANTEXAMINATIONPROCEDURENDE07-05Revision0Date30/04/2007Page2of10DEMONSTRATIONCERTIFICATIONWeherebycertifythattheLiquidPenetrantExaminationprocedure（Doc.No.：NDE07-05/Rev.0）hasbeendemonstratedonatestspecimenwithknowndefectstothesatisfactionoftheAIaccordingtoASMECodeSectionV,T-150asrequiredbytheSectionVIII,Div.1,Appendix8.TestSpecimenNo.:NDE01-2＃Demo.ReportNo.:NDE07-05-01CertifiedbyNDTLevel:ⅢDate:AI:Date:LIQUIDPENETRANTEXAMINATIONPROCEDURENDE07-05Revision0Date30/04/2007Page3of101.General1.11.1ThisprocedureprovidestherequirementsandacceptancestandardsfordyeliquidpenetrantexaminationinaccordancewithASMECodeSectionI、SectionVandSectionDivision1Ⅷ&2.1.2Thisprocedureisonlysuitablefordetectingthedefectsthatareopentothesurfaceofmaterialorweldment1.3ThisprocedureshallbecertifiedbydemonstrationtothesatisfactionoftheAIpriortoimplementation.2.Personnel2.1Thepersonnelengagedinthepenetrantexaminationshallbequalifiedandcertifiedinaccordancewiththerequirementof“WrittenPracticeforNDEPersonnelTraining,Examination，QualificationandCertification”2.2TheoperatorshallbeatleastlevelⅠ.InterpretationofresultsshallonlybeperformedbyalevelⅡoralevelⅢpersonnel.3.WrittenProcedureRequirements3.1Requirements.Liquidpenetrantexaminationshallbeperformedinaccordancewiththiswrittenprocedure,whichshall,asaminimum,containtherequirementslistedinTable1.Thewrittenprocedureshallestablishasinglevalue,orrangeofvalues,foreachrequirement.3.2ProcedureQualificationWhenprocedurequalificationisspecified,achangeofrequirementinTable1identifiedasanessentialvariablefromthespecifiedvalue,orrangeofvalues,shallrequirerequalificationofthewrittenprocedure.Achangeofarequirementidentifiedasnonessentialvariablefromthespecifiedvalue,orrangeofvalues,doesnotrequirerequalificationofthewrittenprocedure.Allchangesofessentialornonessentialvariablesfromthevalue,orrangeofvalues,specifiedbythewrittenprocedureshallrequirerevision,oranaddendumto,thewrittenprocedure.Table1RequirementsofLiquidPenetrantExaminationProcedureLIQUIDPENETRANTEXAMINATIONPROCEDURENDE07-05Revision0Date30/04/2007Page4of10No.RequirementEssentialVariableNonessentialVariable【1】Identificationofandanychangeintypeorfamilygroupofpenetrantmaterialsincludingdevelopers,emulsifiers,etc●【2】Surfacepreparation(finishingandcleaning,includingtypeofcleaningsolvent)●【3】Methodofapplyingpenetrant●【4】Methodofremovingexcesssurfacepenetrant●【5】Methodofapplyingdeveloper●【6】Minimumandmaximumtimeperiodsbetweenstepsanddryingaids●【7】Decreaseinpenetrantdwelltime●【8】Increaseindeveloperdwelltime(Interpretationtime)●【9】Minimumlightintensity●【10】Surfacetemperatureoutside50°Fto125°F(10to52)oraspreviouslyqualified℃℃●【11】Performancedemonstration,whenrequired●【12】Personnelqualificationrequirements○【13】Materials,shapes,orsizestobeexaminedandtheextentofexamination○【14】Postexaminationcleaningtechnique○4.PenetrantMaterial4.1Thisprocedureadoptsdyeliquidpenetrantexamination,solvent-removablemethods.4.2Thepenetrantmaterialsisintendedtoincludeallpenetrants,solventsorcleaningagents,developers,etc,usedintheexaminationprocess.4.3TheliquidpenetrantexaminationmaterialsshallbedesignatedandrecommendedasshowninTable2.Thematerialsusedforexaminationshallbethesametype.IntermixingofpenetrantmaterialsfromdifferentfamiliesorLIQUIDPENETRANTEXAMINATIONPROCEDURENDE07-05Revision0Date30/04/2007Page5of10differentmanufacturersisnotpermitted.Table2ManufacturerMaterialModelPenetrantDPT-5DeveloperDPT-5MARKTEC(SUZHOUSHANGHAI)CO.,LTDCleanerDPT-54.4Whenexaminingausteniticstainlesssteelortitanium,allmaterialsshallbeanalyzedindividuallyforchlorineandfluorinecontentinaccordancewiththeprocedureshowninT-641ofASMECodeSectionV.Thetotalchlorineplusfluorinecontentshallnotexceed1%oftheresiduebyweight.Thecertificateofcompliancefrommanufacturershallbeobtained.4.5Whenexaminingnickelbasealloys,allmaterialsshallbeanalyzedindividuallyforsculpturecontentinaccordancewiththeprocedureshowninT-641ofSectionV.Thesculpturecontentshallnotexceed1%oftheresiduebyweight.Thecertificateofcompliancefrommanufacturershallbeobtained.5.ExaminationProcess5.1ExaminationFlowChartasshowninFig.1.5.2SurfacePreparationPriortoallpenetrantexamination,thesurfacetobeexaminedandalladjacentareaswithinatleast1in.(25.4mm)shallbedryandfreeofdirt,grease,lint,scale,weldingflux,weldspatter，paint，oilandotherextraneousmatter.Ifnecessary,surfaceshallbepreparedbygrindingormachining.5.3PrecleaningDryingLIQUIDPENETRANTEXAMINATIONPROCEDURENDE07-05Revision0Date30/04/2007Page6of10SurfacePreparationPrecleaningandDryPenetrantApplicationDevelopmentandInspectionEvaluationandRecordPostCleaningExcessPenetrantRemovalFig.15.3.1Theareastobeexaminedandadjacentareaswithinatleast1in.(25mm)shallbecleanedusingcleaner(DPT-5)beforethepenetrantisapplied.5.3.2Aftercleaning,dryingofthesurfacetobeexaminedshallbeaccomplishedbynormalevaporationorwithforcedair,asappropriate.Theminimumdryingtimeshallbe2minutest