Why is it unsafe to refuel a forklift while the engine is running?

• A. Fuel could ignite or catch fire
• B. Engine could stall
• C. Fuel efficiency decreases
• D. It’s illegal

Answer: (A)

Refueling with the engine off reduces the fire hazard by removing potential ignition sources during fueling. A running engine has hot exhaust components, electrical systems, and other parts that can produce sparks or heat. If fuel spills or vapors are present, they can contact these ignition sources and ignite, causing a fire or explosion. Fuel vapors tend to pool near the ground and can reach ignition points even if they’re not directly in contact with the engine. Turning the engine off also helps minimize static discharge and other risks associated with fueling, and aligns with safe fueling practices. The other options don’t address the real safety risk: fire from fuel vapors meeting an ignition source.