What does the term "flash point" refer to in fuel systems?

The term "flash point" refers to the lowest temperature at which fuel can vaporize to form an ignitable mixture with air. This characteristic is crucial in fuel systems because it indicates the temperature at which a liquid fuel can produce enough vapor to ignite when exposed to an open flame or spark. Understanding the flash point of fuels is essential for safe handling, storage, and transportation, as it helps prevent accidents related to fire and explosion.

For instance, if fuel is stored at a temperature exceeding its flash point, there is a significant risk of fire hazards due to the potential for vapor formation. This makes flash point a critical factor in determining safe operating conditions and ensures compliance with safety regulations in fuel management systems.