TCFP Plans Examiner Practice Test

How many types of foam fire extinguishing systems are there?

1. 3

2. 4

3. 5

4. 6

The correct answer is: 5

Foam fire extinguishing systems are classified into various types based on their design and application methods. The correct answer reflects the fact that there are five primary types of foam systems widely recognized in fire protection: 1. **Aqueous Film Forming Foam (AFFF)**: This type creates a thin film on the surface of flammable liquids, which helps to smother flames and prevent re-ignition. 2. **Alcohol-Resistant Aqueous Film Forming Foam (AR-AFFF)**: Similar to AFFF, this foam is specifically formulated to work on polar solvent fires, providing additional resistance to alcohol-based fuels. 3. **Protein Foam**: Made from natural proteins, this foam is used for extinguishing class B fires involving flammable liquids. It is effective for forming a barrier that excludes air. 4. **Synthetic Foam**: This type is produced from synthetic surfactants and can offer excellent performance in extinguishing flammable liquid fires. 5. **Frost Foam or Fluorine-Free Foam**: These are newer formulations designed to meet environmental regulations, offering effective firefighting capabilities while being more environmentally friendly. Understanding the different types of foam extinguishing systems is crucial for fire safety professionals. Each type serves a specific