What effect does barometric pressure have upon a sealed fire area?

In a sealed fire area, barometric pressure plays a crucial role in determining how air behaves around fire seals. When there is a variation in pressure, air will move from areas of higher pressure to areas of lower pressure. This movement occurs due to the natural tendency of air to flow in order to equalize pressure differences.

In the context of a sealed fire area, when the external pressure drops (creating a lower pressure scenario), air may leak in around the fire seals due to this pressure differential. This influx of air can be critical because it can supply additional oxygen to the fire, potentially impacting its behavior and intensity.

Understanding this dynamic is important for fire safety and management, as it illustrates how external atmospheric conditions can influence the behavior of fire within a contained environment.