Which action should be avoided during an incident involving a tanker carrying flammable fuels?

• A. Using road flares
• B. Wearing protective gloves
• C. Establishing a safety perimeter
• D. Using foam on the spill

Answer: (D)

When dealing a tanker with flammable fuels, the priority is to prevent ignition and limit the spread of the liquid. Foam is a firefighting agent designed to blanket and cool a fire, not to manage a non-fire spill. If you apply foam to a fuel spill without a fire, the foam’s water content and movement can cause the spilled fuel to spread further, create emulsions, and hinder containment and cleanup. Foam can also introduce unnecessary complexity to the scene unless a fire actually exists.

Wearing protective gloves and establishing a safety perimeter are standard, prudent safety steps to protect responders and keep others away from the hazard. Using road flares, while sometimes used to mark areas, can be an ignition source around flammable vapors, so they must be used with caution and distance or avoided near active vapors.