What types of exposures may firefighters encounter at a fire scene?

Firefighters face various exposures at a fire scene, and categorizing these exposures as internal and external provides a comprehensive understanding of the risks involved. Internal exposures refer to risks that firefighters encounter within the structure itself, such as toxic gases, heat, smoke, and potential collapse hazards. These internal factors can significantly impact their safety and effectiveness during firefighting operations.

External exposures include risks that firefighters may face outside the structure, such as environmental conditions (weather factors), nearby structures or vehicles, and other firefighting apparatus. Understanding these two categories allows firefighters to better assess the scene, identify potential hazards, and implement appropriate safety measures to protect themselves and their teams while effectively managing the incident.

This classification is particularly useful for developing safety protocols, training exercises, and operational strategies, ensuring that both internal and external hazards are addressed adequately in fire response planning.