Which approach is used to generate steam during a fire attack?

• A. Indirect attack
• B. Fog attack
• C. Direct attack from compartment access
• D. Mechanical isolation

Answer: (A)

Indirect attack is the method that intentionally uses steam to help suppress the fire. By directing water into the space from a distance or at the ceiling with a fog pattern, the hot water rapidly turns to steam. That steam blankets the fire area, cools the hot gases, and pushes the flames away from the attack path, making it safer to advance and apply water directly where needed. This approach is preferred when access to the flames is limited or when you want to cool the upper layer first before a direct attack. Direct attack from compartment access targets the flames directly at the front and doesn’t rely on forming a steam blanket. A fog attack can aid cooling, but the deliberate generation of a steam blanket to control the fire is characteristic of the indirect method. Mechanical isolation focuses on shutting off fuel or airflow paths to starve the fire, not on producing steam.