Compressed air foam systems should be operated at flow rates that are:

Operating compressed air foam systems at flow rates that are equal to water flow rates is essential for ensuring effective fire suppression. This balance allows the system to deliver a consistent and appropriate amount of foam that can effectively blanket the fire. The foam produced by compressed air foam systems relies on the correct ratio of water to air to create a stable and effective foam solution.

If the flow rates were higher than the water flow rates, it could dilute the foam solution, reducing its effectiveness in controlling and extinguishing fires. Conversely, if the flow rates are lower than water flow rates, there may not be enough foam to adequately cover the burning material, leading to inadequate fire suppression. Therefore, maintaining equal flow rates ensures that the advantages of foam, such as heat absorption, insulation, and a barrier to oxygen, are fully realized when fighting fires.

This understanding is integral to the proper implementation of compressed air foam systems in firefighting operations. It allows for the most efficient use of the foam and maximizes the system’s effectiveness in various fire scenarios.