Answered

For a combustible dust explosion or flash fire to occur, dust must be dispersed or suspended in the air at which of the following?

A. Minimum Flash Concentration (MFC)
B. Lower Flammable Limit (LFL)
C. Permissible Exposure Limit (PEL)
D. Minimum Explosive Concentration (MEC)



Answer :

GinnyAnswer

Final answer:

Dust must be dispersed or suspended into the air at the Lower Flammable Limit (LFL) for a combustible dust explosion or flash fire to occur.


Explanation:

For a combustible dust explosion or flash fire to occur, dust must be dispersed or suspended into the air at the:

  • Lower Flammable Limit (LFL)

This is the minimum concentration of a combustible dust in the air below which a dust cloud cannot ignite. If the dust concentration exceeds this limit, it can lead to a combustible dust explosion or flash fire.


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