ASTM C1217-2000(2006) 核材料及放射性材料处理用设备设计的标准导则

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【英文标准名称】:StandardGuideforDesignofEquipmentforProcessingNuclearandRadioactiveMaterials
【原文标准名称】:核材料及放射性材料处理用设备设计的标准导则
【标准号】:ASTMC1217-2000(2006)
【标准状态】:现行
【国别】:
【发布日期】:2000
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:C26.09
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:放射性物质;处理;辐射防护;核燃料
【英文主题词】:design;equipment;nuclearmaterials;processing
【摘要】:1.1Intent1.1.1Thisguidecoversequipmentusedinshieldedcellorcanyonfacilitiesfortheprocessingofnuclearandradioactivematerials.Itistheintentofthisguidetosetdowntheconditionsandpracticesthathavebeenfoundnecessarytoensureagainstortominimizethefailuresandoutagesofequipmentusedunderthesubjectcircumstances.1.1.2Itisintendedthatthisguiderecordtheprinciplesandcaveatsthatexperiencehasshowntobeessentialtothedesign,fabrication,andinstallationofequipmentcapableofmeetingthestringentdemandsofoperating,dependablyandsafely,inanuclearprocessingenvironmentthatoperatorscanneitherseenorreachdirectly.1.1.3Thisguidesetsforthgeneralizedcriteriaandguidelinesforthedesign,fabrication,andinstallationofequipmentusedinthisservice.Thisserviceincludestheprocessingofradioactivewastes.Equipmentisplacedbehindradiationshieldwallsandcannotbedirectlyaccessedbytheoperatorsorbymaintenancepersonnelbecauseoftheradiationexposurehazards.Inthetypeofshieldedcellorcanyonfacilityofinteresttousersofthisguide,eitherthebackgroundradiationlevelremainshighatalltimesoritisimpracticaltoremovetheprocesssourcesofradiationtofacilitateinsiturepairsorcarryoutmaintenanceproceduresonequipment.Theequipmentisoperatedremotely,eitherwithorwithoutvisualaccesstotheequipment.1.2Applicability1.2.1Thisguideisintendedtobeapplicabletoequipmentusedunderoneormoreofthefollowingconditions:Thematerialshandledorprocessedconstituteasignificantradiationhazardtomanortotheenvironment.Theequipmentwillgenerallybeusedoveralong-termlifecycle(forexample,inexcessoftwoyears),butequipmentintendedforuseoverashorterlifecycleisnotexcluded.Thematerialhandledorprocessedmustberetained,contained,andconfinedwithinknownboundsforreasonsofaccountabilityortominimizethespreadofradioactivecontamination.Thematerialshandledorprocessedmustbekeptandmaintainedwithinoneormoreofthefollowingconditions:Inaspecificgeometricarrayorconfiguration,andWithinarangeofconditionsthathavebeendeterminedtobeacriticallysafesetofconditionsforthatpieceofequipment,thatis,1)inagivenandspecifiedoperationalpositionwhereadjacentnuclearcriticalityinteractionconditionsareknownandunchanging,2)foragivenandspecifiedsetorrangeofoperatingconditions,and3)foragivenandspecifiedprocess.Theequipmentcanneitherbeaccesseddirectlyforpurposesofoperationormaintenance,norcantheequipmentbevieweddirectly,forexample,withoutinterveningshieldedviewingwindows,periscopes,oratelevisionmonitoringsystem.1.2.2Thisguideisintendedtobeapplicabletothedesignofequipmentfortheprocessingofmaterialscontaininguraniumandtransuraniumelementsinanyphysicalformunderthefollowingconditions:Suchmaterialsconstituteanunacceptableradiationhazardtotheoperatorsandmaintenancepersonnel,Theneedexistsfortheconfinementofthein-processmaterial,ofdustsandparticulates,orofvaporsandgasesarisingorresultingfromthehandlingandprocessingofsuchmaterials,andAnyoftheconditionscitedinapply.1.2.3Thisguideisintendedtoapplytothedesign,fabrication,andinstallationofancillaryandsupportservicesequipmentunderthefollowingconditions:Suchequipmentisinstalledinshieldedcellorcanyonenvironments,orSuchequipmentisanintegralpartofanin-cellprocessingequipmentconfiguration,oranauxiliarycomponentorsystemthereof,eventhoughanequipmentitemorsystemmaynotdirectlyholdorcontainnuclearorradioactivematerialsundernormalprocessingconditions.