Designation:D5928−18aStandardPracticeforScreeningofWasteforRadioactivity1ThisstandardisissuedunderthefixeddesignationD5928;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthescreeningforα–,β–,andγradiationaboveambientbackgroundlevelsoruser-definedcriteria,orboth,inliquid,sludge,orsolidwastematerials.1.2Thispracticeisintendedtobeagrossscreeningmethodfordeterminingthepresenceorabsenceofradioactivemate-rialsinliquid,sludge,orsolidwastematerials.Itisnotintendedtoreplacemoresophisticatedquantitativeanalyticaltechniques,buttoprovideamethodforrapidlyscreeningsamplesforradioactivityaboveambientbackgroundlevelsoruser-definedcriteria,orboth,forfacilitiesprohibitedfromhandlingradioactivewaste.1.3Thispracticemaynotbesuitableforapplicationssuchassiteassessmentsandremediationactivities.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.6Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C859TerminologyRelatingtoNuclearMaterials3.Terminology3.1Forterminologyrelatedtoradioactivematerials,seeTerminologyC859.4.SummaryofPractice4.1Asampleisheldwithin6mmofthedetectorwindowofaradiationsurveymeter,andthevisibleoraudiblereactionofthemeter,orboth,isnoted.Theuserdefinesanapplication/project-specific“negative”and“positive”...
