Which types of fuel ignite easily?

The choice of dead, dry fuels as those that ignite easily is based on the characteristics of these materials. Dead, dry fuels, such as fallen leaves, grasses, and branches that have not been decomposed, possess low moisture content. This lack of moisture means that they can reach ignition temperature quickly and combust with little energy input. The dry physical state allows these fuels to ignite even from minor sparks or flames.

Other types of fuels, such as cool, shaded fuels, do not ignite easily due to the moisture they retain in cooler environments, which significantly dampens their ability to catch fire. Similarly, flashy fuels, while potentially quick to ignite, often refer to materials that are light and fine, but may still contain some moisture depending on environmental conditions, and they can vary in ignition propensity. Subsurface fuels, such as those found under the soil surface, are usually not exposed to air, making them less available for combustion and not likely to ignite easily without very specific conditions.

Understanding these fuel types and their ignition characteristics is crucial for incident safety officers, as it informs strategies for fire prevention and control in various environments.