Designation:E1515−14StandardTestMethodforMinimumExplosibleConcentrationofCombustibleDusts1ThisstandardisissuedunderthefixeddesignationE1515;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.INTRODUCTIONThistestmethoddescribesproceduresformeasuringtheminimumconcentrationofacombustibledust(dispersedinair)thatiscapableofpropagatingadeflagration.Thetestsaremadeinlaboratorychambersthathavevolumesof20Lorlarger.1.Scope1.1Thistestmethodcoversthedeterminationofthemini-mumconcentrationofadust-airmixturethatwillpropagateadeflagrationinanear-sphericalclosedvesselof20Lorgreatervolume.NOTE1—Theminimumexplosibleconcentration(MEC)isalsore-ferredtoasthelowerexplosibilitylimit(LEL)orleanflammabilitylimit(LFL).1.2Dataobtainedfromthistestmethodprovidearelativemeasureofthedeflagrationcharacteristicsofdustclouds.1.3Thistestmethodshouldbeusedtomeasureanddescribethepropertiesofmaterialsinresponsetoheatandflameundercontrolledlaboratoryconditionsandshouldnotbeusedtodescribeorappraisethefirehazardorfireriskofmaterials,products,orassembliesunderactualfireconditions.However,resultsofthistestmaybeusedaselementsofafireriskassessmentthattakesintoaccountallofthefactorsthatarepertinenttoanassessmentofthefirehazardofaparticularenduse.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.Specificprecau-tionarystatementsaregiveninSection8.2.ReferencedDocuments2.1ASTMStandards:2D3173TestMethodforMoistureintheAnalysisSampleofCoalandCokeD3175TestMethodforVolatileMatterintheAnalysisSampleofCoalandCokeE681TestMet...
