Designation:C1838−16StandardPracticeforCleaningfor1Sand2SBottles1ThisstandardisissuedunderthefixeddesignationC1838;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticeprovidesadescriptionofthedifferentwaystocleanuraniumhexafluoride(UF6)bottles.1.2Thispracticedescribestwokindsofsamplebottles:1Sand2Sbottles.1.3Units—ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C787SpecificationforUraniumHexafluorideforEnrich-mentC859TerminologyRelatingtoNuclearMaterialsC996SpecificationforUraniumHexafluorideEnrichedtoLessThan5%235U2.2ANSIStandard:3N14.1NuclearMaterials—UraniumHexafluoride—PackagingforTransport3.Terminology3.1Definitions—DefinitionsoftermsareasgiveninTermi-nologyC859.4.SignificanceandUse4.1Theuraniumhexfluoride(UF6),asdescribedinSpeci-ficationsC787andC996,hastomeetdifferentrequirements:onesetofrequirementsbeingsafety,healthphysics,andcriticalityandtheothersetbeingchemical,physical,andisotopic.ToensuretheUF6isincompliancewithallrequirements,samplingandanalysisshallbeperformed.Therefore,packagingmayhaveasignificantimpactonthequalityofUF6.4.2Aftersampling,thebottlewillcontainresidues.Thereiscontaminationbecauseoftheequipment,othercontaminationcausedbynonvolatileelements,andisotopiccontaminationasaresultofUF6hydrolysis.4.3Cleaningshallbeefficient.Specialemphasisshouldbegiventodecontaminatethebottleswithoutleavinganytraceofcleaningproducts,makethebottlesinertinUF6medium(passivationbottle),andminimizewaste.Thec...
