The concentration of flammable vapors in the air that is sufficiently rich to ignite describes which of the following terms?
A)flash point
B)boiling point
C)LEL
D)UEL

Question

Quizplus · Accepted Answer

The LEL (Lower Explosive Limit) is the concentration of a flammable vapor in the air that is sufficiently rich to ignite. The flash point is the temperature at which a liquid gives off enough vapor to form a flammable mixture with air. The boiling point is the temperature at which a liquid changes state from a liquid to a gas. The UEL (Upper Explosive Limit) is the concentration of a flammable vapor in the air above which the mixture is too "rich" to ignite.

The Concentration of Flammable Vapors in the Air That Is