Designation:C999−17StandardPracticeforSoilSamplePreparationfortheDeterminationofRadionuclides1ThisstandardisissuedunderthefixeddesignationC999;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversthepreparationofsurfacesoilsamplescollectedforanalysisofradionuclideconstituents,particularlyuraniumandplutonium.Thispracticedescribesoneacceptableapproachtothepreparationofsoilsamplesforradiochemicalanalysis.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Aspecifichazardstatementisgivenin7.3.1.4Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2C859TerminologyRelatingtoNuclearMaterialsC998PracticeforSamplingSurfaceSoilforRadionuclidesC1402GuideforHigh-ResolutionGamma-RaySpectrom-etryofSoilSamplesE11SpecificationforWovenWireTestSieveClothandTestSieves3.Terminology3.1Exceptasotherwisedefinedherein,definitionsoftermsareasgiveninTerminologyC859.4.SummaryofPractice4.1Guidanceisprovidedforthepreparationofahomoge-neoussoilsamplefromtencompositedcoresamples(aggre-gateweightof4to5kg)collectedastoberepresentativeofthearea.5.SignificanceandUse5.1Soilsamplespreparedforradionuclideanalysesbythispracticecanbeusedtocharacterizeradionuclideconstituents.Thispracticeisintendedtoproduceahomogeneoussamplef...
