What does the flammable range specifically indicate?

The flammable range refers to the specific concentration of a gas or vapor in the air that can ignite when exposed to an ignition source. This range is typically expressed as a percentage, showing the limits of concentration in which a mixture can ignite.

Understanding this concept is crucial for hazard assessment during an incident involving flammable materials. If the gas concentration falls below the lower flammable limit, it is too lean to ignite, whereas if it exceeds the upper flammable limit, it becomes too rich to ignite.

Being aware of the flammable range allows responders to evaluate where the risks of fire or explosion exist and to implement appropriate safety measures while dealing with hazardous materials. This understanding plays a critical role in ensuring safety in emergency response situations.