When at a diesel spill, what is the primary safety precaution used by personnel to minimize hazards?

Eliminating all ignition sources is the primary safety precaution during a diesel spill because diesel fuel is flammable and can ignite if it comes into contact with a spark or an open flame. By removing potential ignition sources, such as cigarettes, vehicles, electrical equipment, or any other items that could produce a spark, personnel significantly reduce the risk of fire or explosion in the area affected by the spill.

While wearing appropriate protective equipment, such as a Level A ensemble, and having law enforcement secure the area are important safety measures, they do not directly address the immediate fire hazard posed by the flammable diesel. Transferring the product to a safe container may be necessary for cleanup, but it should only be done after ensuring that all fire risks have been mitigated. Hence, prioritizing the elimination of ignition sources serves as a critical first step in managing the hazards associated with a diesel spill.