The application rate of Class B foam is measured in what unit?

The application rate of Class B foam is fundamentally linked to its effectiveness in suppressing flammable liquid fires. This application rate is typically expressed in gallons per minute per square foot. This unit provides a clear gauge of how much foam is being applied over a specific area within a certain timeframe, which is crucial for ensuring adequate coverage to extinguish a fire.

Using this measurement allows firefighters to determine the appropriate volume of foam necessary to effectively tackle a fire involving Class B flammable liquids, such as gasoline or oils. Monitoring the application rate helps in maintaining operational effectiveness and safety during firefighting operations.

The other units mentioned—liters per hour per square meter, pounds per square inch, and cubic feet per minute—do not align with the established industry standards for applying Class B foam, which is primarily concerned with area coverage and delivery rate. Thus, while they may be important in other contexts, they do not effectively measure foam application rates specific to firefighting with Class B agents.