Designation:F2547−18StandardTestMethodforDeterminingtheAttenuationPropertiesinaPrimaryX-rayBeamofMaterialsUsedtoProtectAgainstRadiationGeneratedDuringtheUseofX-rayEquipment1ThisstandardisissuedunderthefixeddesignationF2547;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThistestmethodestablishesproceduresformeasuringtheattenuationofX-raysbyprotectivematerialsatacceleratingpotentialsfrom60to130kVp.1.2ThistestmethodprovidesattenuationvaluesofprimarybeamX-radiation.1.3Thistestmethodappliestobothleadedandnon-leadedradiationprotectiveclothingmaterials.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2F1494TerminologyRelatingtoProtectiveClothing3.Terminology3.1Definitions:3.1.1attenuation,n—forradiologicalprotectivematerial,thereductionintheintensityoftheX-raybeamresultingfromtheinteractionsbetweentheX-raybeamandtheprotectivematerialthatoccurwhentheX-raybeampassesthroughtheprotectivematerial.3.1.1.1Discussion—Inthistestmethod,theattenuationiscalculatedas1minustheratioofthemeasuredexposurewithaprotectivematerialinthebeamtothemeasuredexposurewithouttheprotectivematerialinthebeamataspecificacceleratingpotential.Multiplyingtheresultingvalueby100givespercentattenuation.Attenuation~percent!5S12exposurewithsampleexposurewithoutsampleD310...
