What precaution should be taken regarding smoking during fueling procedures?

During fueling procedures, it is critical to ensure that there is no smoking nearby. This precaution is essential because fuel vapors are highly flammable and can ignite from any open flame or spark, including those from cigarettes. Maintaining a smoke-free environment minimizes the risk of ignition and potential explosions, making it a fundamental safety protocol in fueling operations.

While wearing masks, designating smoking areas, and keeping sparks away are important safety measures in various contexts, they do not directly address the immediate danger posed by smoking in the vicinity of fuel operations. Therefore, ensuring that no smoking occurs nearby is the most effective and direct precaution that helps prevent fire hazards during fueling.