What type of extinguisher is recommended for fires involving metals?

What type of extinguisher is recommended for fires involving metals?

• A. Class A
• B. Class B
• C. Class C
• D. Class D

Answer: (D)

The recommended type of extinguisher for fires involving metals is a Class D extinguisher. These extinguishers are specifically designed to handle combustible metals, such as magnesium, titanium, sodium, and potassium. The unique challenge with metal fires is that they can burn at extremely high temperatures and may react violently with water, which is why using a regular extinguisher, such as those classified for ordinary combustibles (Class A), flammable liquids (Class B), or electrical fires (Class C), is inappropriate and potentially dangerous. Class D extinguishers typically use dry powder agents that smother and cool the burning metal without reacting dangerously, enabling effective and safe firefighting in metal-related incidents.

The recommended type of extinguisher for fires involving metals is a Class D extinguisher. These extinguishers are specifically designed to handle combustible metals, such as magnesium, titanium, sodium, and potassium. The unique challenge with metal fires is that they can burn at extremely high temperatures and may react violently with water, which is why using a regular extinguisher, such as those classified for ordinary combustibles (Class A), flammable liquids (Class B), or electrical fires (Class C), is inappropriate and potentially dangerous. Class D extinguishers typically use dry powder agents that smother and cool the burning metal without reacting dangerously, enabling effective and safe firefighting in metal-related incidents.