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Test
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Determines
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Application
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ASTM Standard
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Corresponding CEN Standard
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Explosibility Screening
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Potential for combustion
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Screening test to determine if further characterization is needed.
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N/A
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N/A
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20-liter Dust Explosibility
20-liter Gas Explosibility
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Maximum pressure, Pmax, maximum pressure rate-of-pressure-rise, (dp/dt) max, and deflagration index Kmax. Measures explosion severity of a fuel-air mixture.
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Design of explosion protection systems
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E1226 - "Standard Test Method for Pressure and Rate of Pressure Rise for Combustible Dusts"
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EN14034-1:2004 Dust
EN14034-2:2006 Dust
EN13673-1, -2 Gas
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20-liter Minimum Explosive Concentration of Dusts
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Relationship between dust concentration and explosion severity
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Design of explosion prevention systems
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E1515 - "Minimum Explosible Concentration (MEC) of Combustible Dusts"
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EN14034-3:2006
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20-liter Limiting Oxygen Concentration for Dusts
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The lowest oxygen concentration in air at which a dust explosion will occur.
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Design of explosion prevention systems (specifically inerting systems)
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ASTM Draft
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EN14034-4:2004
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Limits of Flammability: Liquids and Gases
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Upper Flammability Limit (UFL) and Lower Flammability Limit (LFL) of liquid or gaseous chemicals in air at ambient pressure and temperature.
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Design of safety systems and safe process operations. Information is suitable for publication in Material Safety Data Sheets.
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E681 - "Standard Test Method for Concentration Limits of Flammability of Chemicals"
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EN1839:2003
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Limits of Flammability: Elevated Temperature and Pressure
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Upper Flammability Limit (UFL) and Lower Flammability Limit (LFL) of gaseous chemicals at elevated temperature and/or pressure (>70°F, 1atm).
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Design of safety systems and safe process operations. Information is suitable for publication in Material Safety Data Sheets.
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E918 - "Determining Limits of Flammability of Chemicals at Elevated Temperature and Pressure"
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N/A
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Limiting Oxidant Concentration: Gases and Vapors
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Limiting oxidant concentration at elevated temperature and pressure
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Design of safety systems and safe process operations. Information is suitable for publication in Material Safety Data Sheets.
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E2079 - "Standard Test Method for Limiting Oxygen (Oxidant) Concentration in Gases and Vapors
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EN14756:2006
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Minimum Auto Ignition Temperature: Dust clouds
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Minimum temperature at which a dust will auto-ignite when exposed to heated air. Provides a relative measure of dust cloud ignitability
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Analysis and design of explosion prevention and protection systems.
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E1491 - "Minimum Autoignition Temperature (MAIT) of Dust Clouds"
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EN50281-2-1
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Minimum Ignition Energy for Dusts
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Lowest spark energy required to initiate a dust explosion. Assesses the relative sensitivity of the sample to ignition by electrical sparks
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Analysis and design of fire/explosion prevention and protection systems.
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E2019 - "Standard Test Method for Minimum Ignition Energy of a Dust Cloud in Air"
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EN13821:2002
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Minimum Dust Layer Ignition Temperature
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Minimum temperature at which a dust layer will ignite when exposed to a heated surface. Provides a relative measure of dust ignitability.
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Analysis and design of fire/explosion prevention and protection systems.
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E2021 - "Test Method for Hot-Surface Ignition Temperature of Dust Layers"
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EN50281-2-1
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Minimum Auto Ignition Temperature of Liquids
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Minimum temperature at which a liquid will auto-ignite when exposed to heat
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Analysis and design of explosion prevention systems.
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E659 - " Autoignition Temperature of Liquid Chemicals"
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EN14522:2005
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