What is LEL and UEL ? The amount of vapour concentration in air ,or gas below which fuel propagation does not take place is called LEL and the amount of vapour concentration in air above which fuel propagation does not take place is called UEL . Lel ( Lower explosive limit ) and UEL ( Upper explosive limit )

Question

Accepted Answer

LEL and UEL are the lower and upper explosive limits of vapour concentration in air or gas.

LEL is the minimum concentration below which fuel propagation does not occur
UEL is the maximum concentration above which fuel propagation does not occur
LEL and UEL are important for ensuring safe handling and storage of flammable materials

Accepted Answer

LEL:-Lower explosive limit

UEL:-Upper explosive limit

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