Which materials require a Class D fire extinguisher for effective control?

A Class D fire extinguisher is specifically designed to combat fires involving combustible metals, such as magnesium, sodium, lithium, and potassium. These materials pose unique challenges in firefighting because they can ignite easily and may continue to burn even when submerged in water. Class D extinguishers typically contain dry powder agents that work by smothering the metal and removing heat.

The other options represent fire classes that require different types of extinguishers. Flammable liquids and gases are best addressed with Class B extinguishers, while electrical fires typically require Class C extinguishers. Household items like paper and fabric fall under Class A fires and are most effectively managed with water or Class A extinguishers. Understanding these classifications is crucial for proper fire safety and ensuring that the correct type of extinguisher is used for the specific type of fire to prevent further escalation and ensure effective control.