HB 3-28-2000 搭铁垫片

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基本信息
标准名称:搭铁垫片
中标分类: 航空、航天 >> 航空器与航天器零部件 >> 紧固件
替代情况:HB 3-28-1983
发布日期:2000-09-20
实施日期:2001-01-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:1页
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所属分类: 航空 航天 航空器与航天器零部件 紧固件
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MIL-C-4339D, MILITARY SPECIFICATION CORROSION PREVENTIVE, SOLUBLE OIL FOR WATER INJECTION SYSTEMS (19 JUL 1990)., This specification covers the requirements for one type of corrosion preventive soluble oil used in water-alcohol mixtures. these water-alcohol mixtures are used as thrust augmentation in certain jet aircraft engines and as anti-detonation or internal coolant fluids in certain reciprocation aircraft engines.【英文标准名称】:StandardTestMethodforAirborneAsbestosConcentrationinAmbientandIndoorAtmospheresasDeterminedbyTransmissionElectronMicroscopyDirectTransfer(TEM)
【原文标准名称】:用透射式电子显微镜直接转移法测定周围环境和室内空气中气载石棉浓度的标准试验方法
【标准号】:ASTMD6281-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D22.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:空气;空气质量;环境空气;角闪石;石棉;石棉粉;温石棉;电子显微镜;电子显微镜检查法;显微术;试验
【英文主题词】:air;ambientair;amphibole;asbestos;chrysotile;electronmicroscopy;indooratmospheres;microscopy
【摘要】:1.1Thistestmethodisananalyticalprocedureusingtransmissionelectronmicroscopy(TEM)forthedeterminationoftheconcentrationofasbestosstructuresinambientatmospheresandincludesmeasurementofthedimensionofstructuresandoftheasbestosfibersfoundinthestructuresfromwhichaspectratiosarecalculated.1.1.1Thistestmethodallowsdeterminationofthetype(s)ofasbestosfiberspresent.1.1.2Thistestmethodcannotalwaysdiscriminatebetweenindividualfibersoftheasbestosandnon-asbestosanaloguesofthesameamphibolemineral.1.2Thistestmethodissuitablefordeterminationofasbestosinbothambient(outdoor)andbuildingatmospheres.1.2.1Thistestmethodisdefinedforpolycarbonatecapillary-porefiltersorcelluloseester(eithermixedestersofcelluloseorcellulosenitrate)filtersthroughwhichaknownvolumeofairhasbeendrawnandforblankfilters.1.3Theupperrangeofconcentrationsthatcanbedeterminedbythistestmethodis7000s/mm2.Theairconcentrationrepresentedbythisvalueisafunctionofthevolumeofairsampled.1.3.1Thereisnolowerlimittothedimensionsofasbestosfibersthatcanbedetected.Inpractice,microscopistsvaryintheirabilitytodetectverysmallasbestosfibers.Therefore,aminimumlengthof0.5mhasbeendefinedastheshortestfibertobeincorporatedinthereportedresults.1.4Thedirectanalyticalmethodcannotbeusedifthegeneralparticulatematterloadingofthesamplecollectionfilterasanalyzedexceedsapproximately10%coverageofthecollectionfilterbyparticulatematter.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_01
【页数】:32P.;A4
【正文语种】: