1、Designation:E154809Standard Practice forPreparation of Aerospace Contamination Control Plans1This standard is issued under the fixed designation E1548;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number
2、 in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice is intended to assist in the preparation offormal plans for contamination control,especially of aerospacecritical surfaces.Requirem
3、ents may be established at thesystems level,either by the customer or the systems integrator,or at the subsystem level.Subsystem requirements may beimposed by the responsible subsystem supplier or they may beflowed down from the systems organization(4.7).The extentof detail and level of cleanliness
4、required can vary with theparticular application and type of hardware being built,but allaspects of contamination control must be included in a finalplan.Therefore,each of the following elements must beconsidered for inclusion in a contamination control plan(CCP):1.1.1 Cleanliness requirements for d
5、eliverable hardwareaddressing particulate,molecular,or biological contaminantsor combination thereof.Specify contamination limits and anybudget allocations.1.1.2 Implementation plans to achieve,verify,and maintainthe specified cleanliness requirements.Specify material andprocess controls,cleaning te
6、chniques,verification tests,pro-tection and prevention plans,transportation controls,andcorrective action for discrepancies.1.1.3 Environmental controls including clean facilities to beused,facility maintenance,and monitoring schedule.1.1.4 Personnel and operational controls including operat-ing pro
7、cedures,restrictions,training,motivation,and organi-zational responsibilities including the organization or indi-vidual for implementation and verification of the CCP.1.2 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.2.Referenc
8、ed Documents2.1 ASTM Standards:2E595 Test Method for Total Mass Loss and Collected Vola-tile Condensable Materials from Outgassing in a VacuumEnvironmentE1216 Practice for Sampling for Particulate Contaminationby Tape LiftE1235 Test Method for Gravimetric Determination of Non-volatile Residue(NVR)in
9、 Environmentally ControlledAreas for SpacecraftE1549 Specification for ESD Controlled Garments Requiredin Cleanrooms and Controlled Environments for Space-craft for Non-Hazardous and Hazardous OperationsE1559 Test Method for Contamination Outgassing Charac-teristics of Spacecraft MaterialsE2042 Prac
10、tice for Cleaning and Maintaining ControlledAreas and Clean RoomsE2217 Practice for Design and Construction of AerospaceCleanrooms and Contamination Controlled AreasF50 Practice for Continuous Sizing and Counting of Air-borne Particles in Dust-Controlled Areas and CleanRooms Using Instruments Capabl
11、e of Detecting SingleSub-Micrometre and Larger ParticlesF303 Practices for Sampling for Particles in AerospaceFluids and ComponentsF312 Test Methods for Microscopical Sizing and CountingParticles from Aerospace Fluids on Membrane Filters2.2 Government Standards:FED-STD-209E Airborne Particulate Clea
12、nliness Classes inCleanrooms and Clean Zones3,4USAF Tech Order 00-25-203 Contamination Control ofAerospace Facilities,U.S.Air Force31This practice is under the jurisdiction of ASTM Committee E21 on SpaceSimulation and Applications of Space Technology and is the direct responsibility ofSubcommittee E
13、21.05 on Contamination.Current edition approved April 1,2009.Published April 2009.Originallyapproved in 1993.Last previous edition approved in 2003 as F1548 03.DOI:10.1520/E1548-09.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.F
14、or Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Standardization Documents Order Desk,Bldg.4 Section D,700Robbins Ave.,Philadelphia,PA 19111-5094,Attn:NPODS.4FED-STD-209 has been superceded by ISO 14644-1 and-2.It may
15、continue tobe used if mutually agreed to by customer and supplier.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 2.3 International Standards:5ISO 14644-1 CleanroomsandAssociatedControlledEnvironments,Classification of Air CleanlinessISO
16、14644-2 CleanroomsandAssociatedControlledEnvironmentsSpecifications for testing and monitoringto prove continued compliance with ISO 14644-1ISO 15388 Space SystemsContamination and CleanlinessControl2.4 IEST Standards:IEST-STD-CC1246D Product Cleanliness Levels and Con-tamination Control Program6NOTE1The Institute of Environmental Sciences has several Recom-mended Practices which may also be useful in the preparation of a CCP.3.Terminology3.1 Definitions:3.1.1 bidirectionalreflectancedistributio