Basic Firefighter Written Practice Exam

Which of the following is an advantage of using CAFS?

1. Uses more water

2. Increases surface tension

3. Creates less surface area

4. Uses less water

The correct answer is: Uses less water

Using compressed air foam systems (CAFS) provides the significant advantage of using less water during firefighting operations. CAFS combines water, foam concentrate, and compressed air to produce a foam that is more effective at suppressing fires compared to plain water or traditional foam applications. This reduction in water usage is crucial for several reasons. First, it conserves a limited resource, especially in areas affected by drought or water restrictions. Second, using less water minimizes damage to structures and surrounding environments, as excessive water can lead to further complications such as structural weakening or silt accumulation. Third, the enhanced effectiveness of the foam allows for quicker fire suppression, which can lead to improved safety for both firefighters and civilians. Overall, the capability of CAFS to reduce water usage while increasing fire suppression effectiveness is a primary reason for its adoption in modern firefighting practices.