Designation:D7282−21StandardPracticeforSetup,Calibration,andQualityControlofInstrumentsUsedforRadioactivityMeasurements1ThisstandardisissuedunderthefixeddesignationD7282;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticecoversconsensuscriteriaforthesetup,calibration,andqualitycontrolofnuclearinstruments.Setupestablishestheoperatingparametersoftheinstrument—forexample,voltageordiscriminatorsettings.Calibrationsdeter-minetheinstrument’sresponsecharacteristics—forexample,itscountingefficiencyorgain.Qualitycontrolensuresthattheperformanceoftheinstrumentremainsacceptableforitsintendeduseandconsistentwiththeperformanceatthetimeofcalibration.1.2Thispracticeaddressesfourofthemostcommonlyusedtypesofnuclearcountinginstruments:alpha-particlespectrometer,gamma-rayspectrometer,gasproportionalcounter,andliquidscintillationcounter.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesaremathematicalconversionsthatareprovidedforinformationonlyandarenotconsideredstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1129TerminologyRelatingtoWaterD3648PracticesfortheMeasurementofRadioactivityD7283TestMethodforAlphaandBetaActivityinWaterByLiquidScintillationCountingD7902TerminologyforRadiochemicalAnaly...
