Are passengers and cabin crew allowed to board or deplane aircraft during fueling with engines running?

During the fueling process with engines running, it is essential for safety reasons that passengers and cabin crew remain on the ground and are not allowed to board or deplane the aircraft. This policy is in place because the risk of fire and explosion increases significantly when fuel is being added to an aircraft, especially while the engines are operational. Therefore, to mitigate any potential hazards associated with fueling, strict regulations dictate that no one is permitted to approach or enter the aircraft during this time. Safety protocols must prioritize the protection of both individuals and the aircraft itself, making a prohibition necessary in this context.