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1、ARTICLE5ULTRASONICEXAMINATIONMETHODSFORMATERIALS04T-510SCOPEspecifiedvalue,orrangeofvalues,doesnotrequirerequalificationofthewrittenprocedure.AllchangesofThisArticleprovidesorreferencesrequirements,essentialornonessentialvariablesfromthevalue,orwhicharet
2、obeusedinselectinganddevelopingultra-rangeofvalues,specifiedbythewrittenprocedureshallsonicexaminationproceduresforparts,components,requirerevisionof,oranaddendumto,thewrittenpro-materials,andallthicknessdeterminations.WhenSA,cedure.SB,andSEdocumentsare
3、referenced,theyarelocatedinArticle23.ThereferencingCodeSectionshallbeconsultedforspecificrequirementsforthefollowing:T-530EQUIPMENT(a)personnelqualification/certificationrequirements;T-531Instrument(b)procedurerequirements/demonstration,qualifica-tion,acce
4、ptance;Apulse-echotypeofultrasonicinstrumentshallbe(c)examinationsystemcharacteristics;used.Theinstrumentshallbecapableofoperationat(d)retentionandcontrolofcalibrationblocks;frequenciesovertherangeofatleast1MHzto5MHz,(e)extentofexaminationand/orvolumet
5、obescanned;andshallbeequippedwithasteppedgaincontrolinunits(f)acceptancestandards;of2.0dBorless.Iftheinstrumenthasadampingcontrol,(g)retentionofrecords,anditmaybeusedifitdoesnotreducethesensitivityof(h)reportrequirements.theexamination.Therejectcontrol
6、shallbeintheoffDefinitionsoftermsusedinthisArticlearecontainedpositionforallexaminationsunlessitcanbedemon-inMandatoryAppendixIIIofthisArticle.stratedthatitdoesnotaffectthelinearityoftheexami-nation.T-520GENERALT-532SearchUnitsT-521BasicRequirementsThen
7、ominalfrequencyshallbefrom1MHzto5TherequirementsofthisarticleshallbeusedtogetherMHzunlessvariablessuchasproductionmaterialgrainwithArticle1,GeneralRequirements.structurerequiretheuseofotherfrequenciestoassureadequatepenetrationorbetterresolution.Search
8、unitsT-522WrittenProcedureRequirementswithcontouredcontactwedgesmaybeusedtoaidultra-T-522.1Requirements.Ultrasonicexaminationshallsoniccoupling.beperformedinaccordancewithawrittenprocedure,whichshall,asaminimum,containtherequirementslis
