What is the risk associated with hydraulic fluid fires?

What is the risk associated with hydraulic fluid fires?

• A. They are non-flammable
• B. They can burn at high temperatures and may spread; avoid ignition sources and use appropriate extinguishing methods
• C. They only burn at room temperature
• D. They require only water fog

Answer: (B)

Hydraulic fluid fires are dangerous because these fluids are flammable and can burn intensely, with the flame spreading quickly through leaks, pools, and confined spaces in an aircraft. The flame can be fed by the fluid traveling along lines and surfaces, so the fire can grow or reignite if the source isn’t controlled. The best approach is to first eliminate ignition sources and shut off the hydraulic system if it can be done safely, then attack with extinguishing methods appropriate for flammable liquids (such as foam or dry chemical). Water alone is not reliable here; it can spread the burning liquid or push it into new areas, making the situation worse. So hydraulic fluid fires require stopping the fluid source and applying suitable Class B extinguishing agents rather than relying solely on water. The other statements miss the key point that hydraulic fluids are flammable, can burn at high temperatures, and need proper extinguishing techniques rather than just water-based cooling.

Hydraulic fluid fires are dangerous because these fluids are flammable and can burn intensely, with the flame spreading quickly through leaks, pools, and confined spaces in an aircraft. The flame can be fed by the fluid traveling along lines and surfaces, so the fire can grow or reignite if the source isn’t controlled. The best approach is to first eliminate ignition sources and shut off the hydraulic system if it can be done safely, then attack with extinguishing methods appropriate for flammable liquids (such as foam or dry chemical). Water alone is not reliable here; it can spread the burning liquid or push it into new areas, making the situation worse. So hydraulic fluid fires require stopping the fluid source and applying suitable Class B extinguishing agents rather than relying solely on water. The other statements miss the key point that hydraulic fluids are flammable, can burn at high temperatures, and need proper extinguishing techniques rather than just water-based cooling.