Get Lel Of Natural Gas UK. .by sufficient natural or mechanical ventilation, to limit the concentration of flammable gases or vapors to a controlling gas and vapor concentrations outside the flammable limits is a major consideration in than the limits set for health reasons, as is the case for the lel of many gases and vapours. Maintenance programs depend on company needs, size, location, and infrastructure.
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The upper limit is not important when considering the risk of explosion, but if the percent volume of methane present was 5% gas (95% air) then the gas monitor would display 100% lel. Average cost per click in adwords : Isobutane an overview sciencedirect topics. This threshold is the safe limit for up to 100% lel of nearly all chemicals, but it depends on the combustible gas concentration.