Question

an atmosphere is considered hazardous if it contains a hazardous gas in excess of 10 percent of the hazardous material's:

Answer 1

Lower flammable limit means the lowest concentration of a material that will propagate a flame.

What is hazardous atmosphere?

It is an atmosphere that may expose employees to risk of death, incapacitation, impairment of ability to self-rescue, injury, or acute illness from one or more of following causes

• Flammable gas, vapor, or mist in excess of 10 percent of lower flammable limit (LFL)
• Airborne combustible dust at concentration that meets or exceeds its LFL

What is lower flammable limit?

• It means the lowest concentration of a material that will propagate a flame.
• The LFL is usually expressed as percent by volume of material in air (or other oxidant)
• Atmospheres with concentration of flammable vapors at or above 10 percent of lower explosive limit (LEL) are considered hazardous when located in confined spaces.
• However, atmospheres with flammable vapors below 10 percent of LEL are not necessarily safe. Such atmospheres are too lean to burn

Learn more about lower flammable limit at brainly.com/question/2456135

#SPJ4