What is the minimum control distance for open flames during fueling?

The correct answer reflects the minimum distance required to ensure safety during fueling operations. Maintaining a distance of 15 feet (4.5 m) from open flames is crucial to prevent ignition of any flammable vapors that may be present during the fueling process. This distance is established based on safety regulations and best practices in the aviation industry, recognizing that vapor emissions can travel farther than the visible flames and can ignite if they come into contact with an open flame.

This distance helps protect personnel and equipment from potential fire hazards. Adequately spacing fueling activities from sources of ignition, such as open flames, reduces the risk of fire and ensures a safer environment for both airport operations and firefighting personnel. The specified control distance is part of a comprehensive approach to risk management in airport fueling protocols, aimed at minimizing fire risks.