Certified Fire Inspector II Practice Test 2026 - Free Practice Questions and Study Guide for Fire Inspectors

Class B fires specifically involve flammable liquids and vapors, which include materials such as gasoline, oil, grease, and paints. The classification is based on the nature of the fuel that is burning, and it is crucial for fire fighters and fire inspectors to understand this categorization for effective fire prevention and suppression strategies.

For example, using water on a Class B fire is inappropriate, as it can spread the flammable liquid, potentially making the fire larger and more dangerous. Instead, extinguishing agents for Class B fires, like foam or dry chemical extinguishers, are designed to smother the flames and interrupt the chemical reaction of combustion.

Class A fires, on the other hand, primarily involve ordinary combustible materials such as wood or paper, while Class C fires pertain to energized electrical equipment. Class D fires are associated with combustible metals. Understanding these distinctions is essential for the appropriate response to different types of fires, emphasizing the importance of proper classification in fire safety practices.