OHST Practice Questions - Occupational Hygiene And Safety Technician (OHST) Exam

In the context of Process Safety Management (PSM), what is the significance of the lower flammability limit (LFL)?

It indicates the minimum concentration of a flammable gas or vapor in air below which propagation of flame does not occur It represents the maximum safe storage temperature for flammable liquids It defines the minimum oxygen level required for combustion It specifies the maximum concentration before an explosion occurs

Correct Answer:

It indicates the minimum concentration of a flammable gas or vapor in air below which propagation of flame does not occur

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