Which class of fire extinguisher is used for a petroleum fire?

The class of fire extinguisher used for a petroleum fire is Class B. Class B fire extinguishers are specifically designed to combat fires involving flammable liquids, such as gasoline, oil, and grease. These fires are common in environments where petroleum products are handled, making it crucial for firefighters and personnel to utilize the appropriate extinguisher to effectively suppress them.

Class B extinguishers work by smothering the flame and preventing it from gaining oxygen, thus extinguishing the fire. This is vital, as using the wrong type of extinguisher can worsen the situation; for example, using water on a petroleum fire can cause the burning liquid to spread, leading to a larger fire.

Understanding the classification of fire extinguishers is essential for safety protocols and for ensuring the proper response to various types of fires, particularly in environments where flammable liquids are present.