ASTM E1491-2006 尘云的最低自燃温度的标准试验方法

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【英文标准名称】:StandardTestMethodforMinimumAutoignitionTemperatureofDustClouds
【原文标准名称】:尘云的最低自燃温度的标准试验方法
【标准号】:ASTME1491-2006
【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】:E27.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:尘雾;防爆;可燃性;测试
【英文主题词】:autoignitiontemperature;dustcloud;ignition
【摘要】:Thistestmethodprovidesaprocedureforperforminglaboratoryteststodeterminetheminimumautoignitiontemperature(MAIT)ofadustcloud.Thetestdatadevelopedfromthistestmethodcanbeusedtolimitthetemperaturetowhichadustcloudisexposedsoastopreventignitionofthecloud.Becauseoftheshortdurationofthetest,thedataobtainedaremostapplicabletoindustrialequipmentwheredustispresentasacloudforashorttime.BecauseofthesmallscaleofthetestandthepossiblevariationoftheMAITvaluewithscale,thedataobtainedbythistestmethodmaynotbedirectlyapplicabletoallindustrialconditions.TheMAITdatacanalsobeusedinconjunctionwithminimumsparkignitiondatatoevaluatethehazardsofgrindingandimpactsparksinthepresenceofdustclouds(1and2).3Thetestvaluesobtainedarespecifictothesampletested,themethodused,andthetestequipmentutilized.Thetestvaluesarenottobeconsideredintrinsicmaterialconstants,butmaybeusedasarelativemeasureofthetemperatureatwhichadustcloudselfignites.Thetestdataareforcloudignition.Dustintheformofalayermayigniteatsignificantlylowertemperaturesthanthesamedustintheformofacloud(3).Forliquidchemicals,seeTestMethodE659.1.1Thistestmethodcoverstheminimumtemperatureatwhichagivendustcloudwillautoignitewhenexposedtoairheatedinafurnaceatlocalatmosphericpressure.1.2Dataobtainedfromthistestmethodprovidearelativemeasureofdustcloudautoignitiontemperatures.1.3Thistestmethodshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmethodmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduse.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C80
【国际标准分类号】:13_230
【页数】:10P.;A4
【正文语种】: