Designation:E1005−15StandardTestMethodforApplicationandAnalysisofRadiometricMonitorsforReactorVesselSurveillance1ThisstandardisissuedunderthefixeddesignationE1005;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethoddescribesproceduresformeasuringthespecificactivitiesofradioactivenuclidesproducedinradio-metricmonitors(RMs)bynuclearreactionsinducedduringsurveillanceexposuresforreactorvesselsandsupportstruc-tures.MoredetailedproceduresforindividualRMsarepro-videdinseparatestandardsidentifiedin2.1andinRefs(1-5).2Themeasurementresultscanbeusedtodefinecorrespondingneutroninducedreactionratesthatcaninturnbeusedtocharacterizetheirradiationenvironmentofthereactorvesselandsupportstructure.Theprincipalmeasurementtechniqueishighresolutiongamma-rayspectrometry,althoughX-raypho-tonspectrometryandBetaparticlecountingareusedtoalesserdegreeforspecificRMs(1-29).1.1.1Themeasurementproceduresincludecorrectionsfordetectorbackgroundradiation,randomandtruecoincidencesumminglosses,differencesingeometrybetweencalibrationsourcestandardsandtheRMs,selfabsorptionofradiationbytheRM,otherabsorptioneffects,radioactivedecaycorrections,andburnoutofthenuclideofinterest(6-26).1.1.2Specificactivitiesarecalculatedbytakingintoac-countthetimedurationofthecount,theelapsedtimebetweenstartofcountandtheendoftheirradiation,thehalflife,themassofthetargetnuclideintheRM,andthebranchingintensitiesoftheradiationofinterest.Usingtheappropriatehalflifeandknownconditionsoftheirradiation,thespecificactivitiesmaybeconvertedintocorrespondingreactionrates(2-5,28-30).1.1.3Proceduresforcalculationofreactionratesfromtheradioactivitymeasurementsandtheirradiationpowertimehistoryareincluded.Areactionratecanbeconvertedtoneutronfluencerateandfluenceusingtheappropriateintegralcrosssectionandeffectiveirr...
