What are ARFF vehicle agents mainly used for in fire management?

• A. To enhance visibility at night
• B. To combat fires unmanageable by foam alone
• C. To increase passenger safety during emergencies
• D. To cool down hotspots quickly

Answer: (B)

ARFF (Aircraft Rescue and Firefighting) vehicle agents are specifically designed for use in combating large-scale or complex fires that cannot be contained or extinguished effectively using foam alone. Foam agents, which are commonly used in firefighting, work by creating a blanket over the fire to suppress combustion and prevent re-ignition. However, certain scenarios, particularly those involving hazardous materials or specified types of fuel that produce intense, sustained heat, may require additional measures beyond foam.

In these challenging environments, ARFF vehicle agents can include dry chemical agents, water mist, or other specialized extinguishing agents that are formulated to quickly suppress flames and control dangerous fire conditions that foam might not adequately address. This multifaceted approach enables firefighters to effectively tackle high-risk situations that involve aircraft incidents, which often produce atypical fire behaviors due to jet fuel and other combustible materials present at the scene.

While enhancing visibility at night, increasing passenger safety during emergencies, and cooling down hotspots certainly play significant roles in overall fire management and safety, they do not specifically reflect the primary function of ARFF vehicle agents in combating complex fire conditions.