Designation:E2216−02(Reapproved2013)StandardGuideforEvaluatingDisposalOptionsforConcretefromNuclearFacilityDecommissioning1ThisstandardisissuedunderthefixeddesignationE2216;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONNumerousnuclearfacilitiescontaininglargeamountsofconcretearescheduledfordecontamina-tionanddecommissioningoverthenextseveraldecades.Muchofthisconcreteiseithernotcontaminatedoronlylightlycontaminatedonornearthesurface.However,sinceconcreteisslightlyporous,ithasthepotentialtobecontaminatedvolumetrically.Volumetriccontaminationismoredifficulttomeasurethansurfacecontamination,andcurrentlytherearenoreleaseguidelinesforvolumetricallycontaminatedconcrete.Asaresult,largevolumesofconcreteareoftendisposedofasradioactivewasteatalargecost.Undercertainconditions,thedepthoramountofcontaminationmaybelimitedsuchthatacasecanbemadeforconcretereleaseforotherpurposesoutsideofregulatorycontrol.Thesecasesarelikelytobeoneswheretheradioactivecontaminationisshallowandislimitedtoadepththatcanberemovedbyscabbling(removaloftheconcretesurface),orwherethedepthcanbeestimatedbasedonthehistoryandconditionoftheconcrete.Inadditiontosurfacecontaminatedconcrete,somefacilitiescontainactivatedconcretewherethedepthsofcontaminationvary.Thistypeofconcreteshouldbehandledonacase-by-casebasis.Accuratemeasurementsoftheradiationsourcearedifficultforactivatedconcrete,becausetheactivatedportionsoftheembeddedmetalorconcretearepartiallyshieldedbytheconcretethatliesbetweenthesourceandthemeasuringdevice.Caremustbetakentomeasureradiationlevelsofactivatedconcreteaccurately,soactualradiationlevelsaredocumentedandusedwhenapplyingreleasecriteria.Thisstandardguideappliestononrubbelizedconcretethatisstillinplacewithadefinedgeometryandknownhistorywherethedepthofcontaminationcanbemeasuredo...
