ASTM E582-2007 气体混合物中最小点火能量和淬熄距离用标准试验方法

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【英文标准名称】:StandardTestMethodforMinimumIgnitionEnergyandQuenchingDistanceinGaseousMixtures
【原文标准名称】:气体混合物中最小点火能量和淬熄距离用标准试验方法
【标准号】:ASTME582-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:E27.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:气体的;气体;点火;材料;混合物;熄灭;统计学;试验
【英文主题词】:
【摘要】:Theminimumenergiesprovideabasisforcomparingtheeaseofignitionofgases.Theflatplateignitionquenchingdistancesprovideanimportantverificationofexistingminimumignitionenergydataandgiveapproximatevaluesofthepropagationquenchingdistancesofthevariousmixtures.Itisemphasizedthatmaximumsafeexperimentalgaps,asfromx201C;flame-proofx201D;orx201C;explosion-proofx201D;studies,arelessthantheflat-plateignitionquenchingdistances.1.1Thistestmethodcoversthedeterminationofminimumenergyforignition(initiationofdeflagration)andassociatedflat-plateignitionquenchingdistances.Thecompletedescriptionisspecifictoalkaneoralkenefuelsadmixedwithairatnormalambienttemperatureandpressure.Thismethodisapplicabletomixturesofthespecifiedfuelswithair,varyingfromthemosteasilyignitablemixturetomixturesneartothelimit-of-flammabilitycompositions.1.2Extensionstootherfuel-oxidizercombinations,andtoothertemperaturesandpressurescanbeaccomplishedwithalltheaccuracyinherentinthismethodifcertainadditionalconditionsaremet:(a)mixturestabilityandcompatibilitywithbomb,seal,andothermaterialsisestablishedthroughtimetestsdescribedinSection;(b)theexpectedpeakpressurefromthetestiswithinthepressureratingofthebomb(establishedasrequiredbytheparticularresearchlaboratory);(c)sparkbreakdownwithinthebombisconsistentwithPaschen''slawforthedistancebeingtested;(d)thetemperature,includingthatofthedischargeelectrodes,isuniform;and(e)ifthetemperatureisotherthanambient,theenergystoragecapacitancerequiredislessthanabout9pF.1.3ThismethodisoneofseveralbeingdevelopedbyCommitteeE-27fordeterminingthehazardsofchemicals,includingtheirvaporsinairorotheroxidantatmospheres.Themeasurementsareusefulinassessingfuelignitabilityhazardsduetostaticorotherelectricalsparks.However,thequenchingdistancedatamustbeusedwithgreatprudencesincetheyareprimarilyapplicabletotheignitionstageandtherefore,representvaluesforinitialpressureandnotthesmallervaluesexistingathigherpressures.1.4Thisstandardshouldbeusedtomeasureanddescribethepropertiesofmaterials,products,orassembliesinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmaybeusedaselementsofafireriskassessmentwhichtakesintoaccountallofthefactorswhicharepertinenttoanassessmentofthefirehazardofaparticularenduseThisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificsafetyprecautionsarelistedinSection5.
【中国标准分类号】:G86
【国际标准分类号】:71_100_20
【页数】:6P.;A4
【正文语种】: