What is the process of pouring foam concentrate directly into a fire apparatus water tank called?

The process of pouring foam concentrate directly into a fire apparatus water tank is known as batch mixing. In batch mixing, the foam concentrate is added to a predetermined amount of water in the tank, allowing the two components to mix together before being used. This method is straightforward and is typically used when specific concentrations of foam are required for certain firefighting situations.

Batch mixing is advantageous in scenarios where fire operatives need a targeted concentration of foam for effective fire suppression. It allows for flexibility, as firefighters can adjust the foam-to-water ratio based on the type of incident and the materials burning. It is also common because it integrates well into existing fire apparatus operations without requiring complex equipment or systems for continuous operation.

The context of the other mixing methods helps clarify why batch mixing is the appropriate choice. Continuous mixing refers to a process where foam concentrate and water are mixed together in an ongoing manner, which may not be practical or necessary for all fire incidents. Static mixing involves a separate apparatus where components are mixed as they are delivered but does not apply to the scenario of directly introducing concentrate into a tank. Dynamic mixing implies a high-energy mixing process, which also does not accurately describe the straightforward addition of foam concentrate to a water tank.