When refueling, which safety step should be performed?

• A. Extinguish flames and turn off ignition before refueling.
• B. Keep engine running during fueling.
• C. Refuel from containers without spill control.
• D. Fuel in a closed space.

Answer: (A)

Removing ignition sources during fueling is essential. Gasoline vapors are highly flammable and can ignite from sparks or heat. If the engine is left running or electrical systems are active, a spark from the ignition system or from hot components can ignite those vapors. By extinguishing any flames and turning off the ignition before refueling, you materially reduce the risk of a fire or explosion. This is the safest, most effective precaution. Avoid fueling in enclosed spaces and keep the area well ventilated, use spill-control practices, and never smoke in the fueling area, but the primary step is to ensure there are no ignition sources present.