ASTM E1548-2003 Standard Practice for Preparation of Aerospace Contamination Control Plans《航空航天污染控制计划准备的标准规程》.pdf
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1、Designation: E 1548 03Standard Practice forPreparation of Aerospace Contamination Control Plans1This standard is issued under the fixed designation E 1548; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision.
2、A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 sur
3、faces. Requirements 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 le
4、vel of cleanliness 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 Cleanlin
5、ess requirements for deliverable 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 and
6、process controls, cleaning techniques, verification tests, pro-tection and prevention plans, transportation controls, andcorrective action for discrepancies.1.1.3 Environmental controls including clean facilities tobe used, facility maintenance, and monitoring schedule.1.1.4 Personnel and operationa
7、l controls including operat-ing procedures, restrictions, training, motivation, and organi-zational responsibilities including the organization or indi-vidual for implementation and verification of the CCP.2. Referenced Documents2.1 ASTM Standards:E 595 Test Method for Total Mass Loss and CollectedV
8、olatile Condensable Materials from Outgassing in aVacuum Environment2E 1216 Practice for Sampling for Surface Particulate Con-tamination by Tape Lift2E 1235 Test Method for Gravimetric Determination of Non-volatile Residue (NVR) in Environmentally ControlledAreas for Spacecraft2E 1549 Specification
9、for ESD Controlled Garments Re-quired in Cleanrooms and Controlled Environments forSpacecraft for Non-Hazardous and Hazardous Operations2E 1559 Test Method for Contamination Outgassing Charac-teristics of Spacecraft Materials2E 2042 Practice for Cleaning and Maintaining ControlledAreas and Clean Roo
10、ms2E 2217 Practice for Design and Construction of AerospaceCleanrooms and Contamination Controlled Areas2F 50 Practice for Continuous Sizing and Counting of Air-borne Particles in Dust-Controlled Areas and Clean RoomsUsing Instruments Capable of Detecting Single Sub-Micrometre and Larger Particles2F
11、 303 Practices for Sampling Aerospace Fluids from Com-ponents2F 312 Test Methods for Microscopical Sizing and CountingParticles from Aerospace Fluids on Membrane Filters32.2 Government Standards:FED-STD-209E Airborne Particulate Cleanliness Classes inCleanrooms and Clean Zones4,5USAF Tech Order 00-2
12、5-203 Contamination Control ofAerospace Facilities, U.S. Air Force42.3 International Standards:ISO 14644-1 Cleanrooms and Associated Controlled Envi-ronments, Classification of Air Cleanliness6ISO 14644-2 Cleanrooms and Associated ControlledEnvironmentsCleanliness Levels6ISO 15388 Space SystemsConta
13、mination and CleanlinessControl62.4 IEST Standards:IEST-STD-CC1246D Product Cleanliness Levels and Con-tamination Control Program7NOTE 1The Institute of Environmental Sciences has several Recom-mended Practices which may also be useful in the preparation of a CCP.1This practice is under the jurisdic
14、tion of ASTM Committee E21 on SpaceSimulation and Applications of Space Technology and is the direct responsibility ofSubcommittee E21.05 on Contamination.Current edition approved May 10, 2003. Published June 2003. Originallyapproved in 1993. Last previous edition approved in 1998 as F 1548 93 (1998
15、).2Annual Book of ASTM Standards, Vol 15.03.3Annual Book of ASTM Standards, Vol 14.02.4Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.5FED-STD-209 has been superceded by ISO 14644-1 and -2. It may continue tobe used i
16、f mutually agreed to by customer and supplier.6Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.7Available from Institute of Environmental Sciences and Technology (IEST),5005 Newport Dr., Suite 506, Rolling Meadows, IL 60008-3841.1Copyright AS
17、TM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.3. Terminology3.1 Definitions:3.1.1 bidirectional reflectance distribution function(BRDF)the scattering properties of light reflected off sur-faces, expressed as the ratio of differential outputs of
18、 radiancedivided by differential inputs of radiance. Surface contami-nants scatter the incident radiation in all directions and withvariable intensities; BRDF is a method to quantify the spatialdistribution of the scattered energy.3.1.2 biological contaminationliving material such asalgae, bacteria,
19、 fungus, and so forth, which is capable ofreproducing, thus being an increasing contaminant source.3.1.3 budget allocationthe itemized summary of contami-nation accumulation for a given critical hardware item distrib-uted over all phases from manufacture through end of perfor-mance lifetime.3.1.4 cl
20、eanrooman environmentally conditioned areawhere temperature, humidity, and airborne contaminants arecontrolled by design and operation. High Efficiency ParticulateAir (HEPA) filters or better are usually required to achieve theair cleanliness level. Air particulate cleanliness is classified inaccord
21、ance with ISO 14644-1.3.1.4.1 as-built cleanrooma cleanroom that is completeand ready for operation, with all services connected andfunctional, but without equipment or operating personnel in thecleanroom.3.1.4.2 at-rest cleanrooma cleanroom that is completeand ready for operation, with all services
22、 connected andfunctional, and with equipment installed and operable, asspecified but without operating personnel in the cleanroom.3.1.4.3 operational cleanrooma cleanroom in normal op-eration, with all services functioning and with equipment andpersonnel, if applicable, present and performing their
23、normalwork functions in the cleanroom.NOTE 2For batch operations, specific conditions and requirementsshould be noted for monitoring and control.3.1.5 clean zonea defined space in which the concentra-tion of airborne particles is controlled to meet a specifiedairborne particulate cleanliness class.3
24、.1.6 controlled areaan area which does not require ahigh degree of temperature and humidity control but a semi-clean atmosphere is desired. Air conditioning is standardcommercial design except that filtration is rated to 80-85 % for1.0 micrometer (m) and larger particles to control airbornecontamina
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