NEIEP Mechanics Practice Exam

Which type of fire extinguisher is best suited for all types of fires in a machine room?

1. Water extinguisher

2. CO2 extinguisher

3. ABC extinguisher

4. Foam extinguisher

The correct answer is: ABC extinguisher

The choice of an ABC fire extinguisher is ideal for machine rooms because it is specifically designed to tackle a wide range of fire types. The ABC design incorporates a dry chemical agent that is effective against Class A fires (ordinary combustibles like wood and paper), Class B fires (flammable liquids like oil and gasoline), and Class C fires (electrical equipment). In an environment like a machine room, where various materials and potential ignition sources coexist, having an extinguisher that can handle all these types is crucial. The versatility of the ABC extinguisher makes it a comprehensive safety tool, able to address the unpredictable nature of fires that can arise from machinery, electrical components, and combustible materials. While water extinguishers are excellent for Class A fires, they are not suitable for flammable liquids or electrical fires. CO2 extinguishers are effective for Class B and C fires but do not work on Class A fires. Foam extinguishers are primarily used for flammable liquid fires and may not be as effective against electrical fires. Thus, the ABC extinguisher stands out as the best choice for comprehensive fire protection in a machine room.