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【英文标准名称】:StandardPracticeforDesignandConstructionofAerospaceCleanroomsandContaminationControlledAreas
【原文标准名称】:航空航天清洁舱和污染控制区的设计和建造的标准实施规程
【标准号】:ASTME2217-2002(2007)
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E21.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:cleanroom;construction;design;spacecraft;test
【摘要】:Thispracticedescribesanddefinesfactorstobetakenintoconsiderationwhendesigningandfabricatingacleanroomorcontrolledareathatisusedforaerospaceoperationsandfabrication.Followingthesuggestionshereinshouldprovideafacilitythatismorecapableofmeetingperformancerequirementsandthatwillofferprotectionagainstcontaminationforobjectsfabricatedandprocessedinsuchafacility.1.1Thepurposeofthispracticeistoprovidedesignandconstructionguidelinesforcontaminationcontrolledfacilitiesusedintheassemblyandintegrationofaerospacehardware.Theguidelineshereinareintendedtoensurethatthefacilities,whenusedproperly,willmeetthecleanlinessrequirementsofaerospacehardwareandprocesses.Theobjectiveistolimitcontaminationduetothedepositionofparticulateandmolecularcontaminantsonflighthardwaresurfaces.1.2OnecleanlinessclassificationofafacilityistheairborneparticleconcentrationsinaccordancewithISO14644-1and14644-2.AirborneparticleconcentrationsinaccordancewithFED-STD-209Eareincludedforreference.Thissimpleclassificationisinadequatetodescribeafacilitythatwillsupporttheassemblyandintegrationofspacecraft.Theextendeddurationofhardwareexposureduringfabricationandtesting,thesensitivityofthehardwaretohydrocarbonsandothermolecularcontaminants,andthechangingrequirementsduringassemblyandintegrationmustbeconsideredinadditiontotheairborneparticleconcentrations.1.3Theguidelinesspecifiedhereinareintendedtoprovidefacilitiesthatwilleffectivelyrestrictcontaminantsfromenteringthefacility,limitcontaminationgeneratedbyandwithinthefacility,andcontinuouslyremoveairbornecontaminantsgeneratedduringnormaloperations.Someitemsofsupporthardware,suchasliftingequipment,stands,andshoecleaners,areaddressedsincetheseitemsareoftenpurchasedandinstalledwiththefacilityandmayrequireaccommodationinthedesignofthefacility.1.4Activefiltrationofmolecularcontaminants(suchashydrocarbons,silicones,andotherchemicals)isdiscussed.Suchactivefiltrationofmolecularcontaminantsmayberequiredfortheprocessingofhighlysensitiveopticaldevices,especiallyinfraredandcryogenicsensors.ControlofmicrobiologicalcontaminationisnotincludedalthoughHEPA(HighEfficiencyParticulateAir)filtrationwillprovidesomecontrolofairbornebacteria,spores,andotherviablecontaminantsthataretypicallycarriedonparticlesofsizes0.3mandlarger.Controlofradioactivecontaminationandaccommodationofveryhazardousmaterialssuchaspropellants,strongacidsorcaustics,orcarcinogensarenotaddressed.1.5Nofacilitywillcompensateforexcessivecontaminationgeneratedinsidethefacility.Inadditiontoaneffectivefacilitydesign,theusermustalsoinstitutearoutinemaintenanceprogram(seePracticeE2042)forthefacility,andpersonnelandoperationaldisciplinesthatlimitthetransferofcontaminantsthroughentrydoorsandcontaminantgenerationinsidethefacility.1.6Thispracticeonlyaddressesguidelinesforcontaminationcontrolinfacilitydesign.Itmustbeimplementedincompliancewithallmandatorygovernmentandregulatorybuildingandsafetycodes.ReferencestorelatedcleanroomstandardsandU.S.buildingcodesandstandardsmaybefoundinIEST-RP-CC012.1.7ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareprovidedforinformationonlyandarenotconsideredstandard.1.8Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:V04
【国际标准分类号】:13_040_35;49_020
【页数】:14P.;A4
【正文语种】: