What best describes a pool fire?

What best describes a pool fire?

• A. A two-dimensional fuel fire with length and width; water alone is generally unsuitable for large aircraft fuel fires
• B. A three-dimensional fire with height
• C. A fire that occurs only on water
• D. A fire that uses only foam to extinguish

Answer: (A)

Pool fires are flat, surface-based hydrocarbon fires that spread across a pool of fuel on the ground, so they are described as two-dimensional with length and width rather than tall flames. Water alone is generally unsuitable for large aircraft fuel fires because hydrocarbon fuels do not mix with water and water can disperse the fuel, making the fire harder to control. The standard approach is to apply foam to blanket the surface, cooling the fuel, separating the fuel from air, and suppressing vapor production to prevent re-ignition. The other statements are inaccurate: the fire is not primarily a tall, three-dimensional flame; it does not occur only on water; and extinguishing methods are not limited to foam alone.

Pool fires are flat, surface-based hydrocarbon fires that spread across a pool of fuel on the ground, so they are described as two-dimensional with length and width rather than tall flames. Water alone is generally unsuitable for large aircraft fuel fires because hydrocarbon fuels do not mix with water and water can disperse the fuel, making the fire harder to control. The standard approach is to apply foam to blanket the surface, cooling the fuel, separating the fuel from air, and suppressing vapor production to prevent re-ignition. The other statements are inaccurate: the fire is not primarily a tall, three-dimensional flame; it does not occur only on water; and extinguishing methods are not limited to foam alone.