Designation:E2420−15StandardGuideforPost-DeactivationSurveillanceandMaintenanceofRadiologicallyContaminatedFacilities1ThisstandardisissuedunderthefixeddesignationE2420;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1ThisguideoutlinesamethodfordevelopingaSurveil-lanceandMaintenance(S&M)planforinactivenuclearfacilities.Itdescribesthestepsandactivitiesnecessarytopreventlossorreleaseofradioactiveorhazardousmaterials,andtominimizephysicalrisksbetweenthedeactivationphaseandthestartoffacilitydecontaminationanddecommissioning(D&D).1.2TheprimaryconcernsforS&Marerelatedto(1)animalintrusion,(2)structuralintegritydegradation,(3)waterin-leakage,(4)contaminationmigration,(5)unauthorizedperson-nelentry,and(6)theft/intrusion.Thisdocumentisintendedtoserveasaguideonly,andisnotintendedtomodifyexistingregulations.2.ReferencedDocuments2.1ASTMStandards:2E1167GuideforRadiationProtectionProgramforDecom-missioningOperationsE1819GuideforEnvironmentalMonitoringPlansforDe-commissioningofNuclearFacilitiesE1892GuideforPreparingCharacterizationPlansforDe-commissioningNuclearFacilitiesE1893GuideforSelectionandUseofPortableRadiologicalSurveyInstrumentsforPerformingInSituRadiologicalAssessmentstoSupportUnrestrictedReleasefromFur-therRegulatoryControls2.2NuclearRegulatoryCommissionDocuments:3NUREG-1576Multi-AgencyRadiologicalLaboratoryAna-lyticalProtocols(MARLAP)NUREG-1575Multi-AgencyRadiationSurveyandSiteIn-vestigationManual(MARSSIM),Revision1,August2000NUREG-1575-Supplement1Multi-AgencyRadiationSur-veyandAssessmentofMaterialsandEquipmentManual(MARSAME)3.Terminology3.1Definitions:3.1.1deactivation—toremoveafacilityfromservice.De-activationmeansthefacilityisplacedinasafeandstablecondition.3.1.2decommission—toremoveanuclearfacilitysafelyfromserviceandreduceresidualradioactivityand...
