Pyrolysis is defined as what process in relation to burning materials?

Pyrolysis is the process of thermal decomposition of materials in the absence of oxygen, which occurs when materials are heated to their ignition temperature. During this process, solid materials break down into gaseous products, which can then lead to off-gassing. This stage is critical in understanding how materials behave when exposed to heat, as it often precedes combustion. The significance of pyrolysis lies in its role in fire dynamics, as the gases produced can ignite and contribute to fire development.

This process is a key concept in fire training and safety, as recognizing the stages of thermal degradation can help instructors teach how different materials respond in a fire scenario, influencing tactics for extinguishment and safety measures in live fire training exercises. Understanding pyrolysis is essential for predicting fire behavior and ensuring safety during live fire operations.