YB/T 5004-2012 镀锌钢绞线
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基本信息
| 标准名称： | 镀锌钢绞线 |
| 替代情况： | 替代YB/T 5004-2001 |
| 发布部门： | 中华人民共和国工业和信息化部 |
| 发布日期： | 2012-11-07 |
| 实施日期： | 2013-03-01 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 冶金工业出版社 |
| 出版日期： | 2013-03-01 |
适用范围
本标准规定了热浸镀锌钢绞线的分类、尺寸、外形、重量及允许偏差、订货内容、技术要求、试验方法、检验规则、包装、标志和质量证明书。
本标准适用于架空电力地线、通讯电缆、吊架、悬挂、栓系及固定物件等用的热镀锌钢绞线。
前言
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引用标准
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所属分类： 能源 核技术 能源 核技术综合 技术管理 能源和热传导工程 能源和热传导工程综合
Product Code:SAE AMS4328
Title:Aluminum Alloy, Plate (2397-T87), 2.8Cu - 1.4Li - 0.30Mn - 0.12Zr - 0.10Zn, Solution Heat Treated, Cold Worked, and Artificially Aged
Issuing Committee:Ams D Nonferrous Alloys Committee
Scope:This specification covers an aluminum alloy in the form of plate.【英文标准名称】:StandardTestMethodforDeterminationofTotalSuspendedParticulateMatterintheAtmosphere(High-VolumeSamplerMethod)
【原文标准名称】:空气中悬浮粒子的测定方法(大容器取样器法)
【标准号】:ASTMD4096-1991(2003)
【标准状态】:现行
【国别】:
【发布日期】:1991
【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】:D22.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:质量(物质);收集;工艺;空气;抽样方法;保健;应用;分析;职业安全;测定;颗粒
【英文主题词】:atmosphere;Hi-vol;highvolume;particulate;suspended
【摘要】:TheHi-Volsampleriscommonlyusedforthecollectionoftheairborneparticulatecomponentoftheatmosphere.Somephysicalandchemicalparametersofthecollectedparticulatematteraredependentuponthephysicalcharacteristicsofthecollectionsystemandthechoiceoffiltermedia.AvarietyofoptionsavailablefortheHi-Volsamplergiveitbroadversatilityandallowtheusertodevelopinformationaboutthesizeandquantityofairborneparticulatematerialand,usingsubsequentchemicalanalyticaltechniques,informationaboutthechemicalpropertiesoftheparticulatematter.Thistestmethodpresentstechniquesthatwhenuniformlyapplied,providemeasurementssuitableforintersitecomparisons.Thistestmethodmeasurestheatmospherepresentedtothesamplerwithgoodprecision,buttheactualdustlevelsintheatmospherecanvarywidelyfromonelocationtoanother.Thismeansthatsamplerlocationmaybeofparamountimportance,andmayimposefargreatervariabilityofresultsthananylackofprecisioninthemethodofmeasurement.Inparticular,localizeddustsourcesmayexertamajorinfluenceoveraverylimitedareaimmediatelyadjacenttosuchsources.Examplesincludeunpavedstreets,vehicletrafficonroadwayswithasurfacefilmofdust,buildingdemolitionandconstructionactivity,ornearbyindustrialplantswithdustemissions.Insomecases,dustlevelsmeasuredclosetosuchsourcesmaybeseveraltimesthecommunitywidelevelsexclusiveofsuchlocalizedeffects(seePracticeD1357).1.1Thistestmethodprovidesforsamplingalargevolumeofatmosphere,1600to2400m3[55000to85000ft3],bymeansofahighflow-ratevacuumpumpatarateof1.13to1.70m3/min[40to60ft3/min](1,2,3and4).1.2Thisflowrateallowssuspendedparticleshavingdiametersoflessthan100m(stokesequivalentdiameter)tobecollected.However,thecollectionefficienciesforparticleslargerthan20mdecreaseswithincreasingparticlesizeanditvarieswidelywiththeangleofthewindwithrespecttotheroofridgeofthesamplershelterandwithincreasingspeed().Whenglassfiberfiltersareused,particleswithinthesizerangeof100to0.1mdiametersorlessareordinarilycollected.1.3Theupperlimitofmassloadingwillbedeterminedbypluggingofthefiltermediumwithsamplematerial,whichcausesasignificantdecreaseinflowrate(see).Forverydustyatmospheres,shortersamplingperiodswillbenecessary.Theminimumamountofparticulatematterdetectablebythismethodis3mg(95%confidencelevel).Whenthesamplerisoperatedatanaverageflowrateof1.70m3/min[60ft3/min]for24h,thisisequivalentto1to2g/m3(3).1.4Thesamplethatiscollectedmaybesubjectedtofurtheranalysesbyavarietyofmethodsforspecificconstituents.1.5ValuesstatedinSIunitsshallberegardedasthestandard.Inch-poundunitsareshownforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_01
【页数】:9P.;A4
【正文语种】:
