Fire Extinguisher Classifications Overview

Study Notes

Class C Extinguishers

Utilize non-conductive extinguishing agents to safely extinguish fires involving energized electrical equipment.
Recommended agents include carbon dioxide and dry chemicals, essential for preventing electrical hazards during firefighting.

Class B Extinguishers

Contain carbon dioxide gas and are designed for flammable liquid fires, such as gasoline, paint thinner, and hydraulic fluids.
Effective against fires caused by hydrocarbons and common solvents; pressurized with non-flammable gas to ensure safety.

Multi-class Extinguishers

Labeled with multiple classifications, such as A-B, B-C, or A-B-C, indicating versatility for different fire types.
Generally contain dry chemicals combined with a propellant made from compressed non-flammable gas, allowing for a broader range of fire suppression.

Class D Extinguishers

Specialized extinguishers for flammable metals, suitable for materials like magnesium, potassium, titanium, and sodium.
React with water or other common extinguishing agents, necessitating careful handling to prevent violent reactions during firefighting efforts.

Class A Extinguishers

Employ a water-based solution to extinguish fires involving common combustibles such as paper, cloth, and wood.
Use a cooling and soaking stream to effectively manage typical trash and debris fires, maintaining safety against re-ignition.

Description

Explore the different classes of fire extinguishers, including Class A, B, C, and D. Understand the specific agents used for extinguishing fires and their effectiveness in various scenarios. This quiz covers essential safety measures and the appropriate extinguishers for common fire hazards.