Carbon dioxide fixed fire extinguishing systems are primarily used to protect against fires involving:

Carbon dioxide fixed fire extinguishing systems are primarily used to protect against fires involving:

• A. Flammable gases or liquids and electrical equipment
• B. Class A common combustibles
• C. Cooking oil fires
• D. Metal fires

Answer: (A)

Carbon dioxide fixed extinguishing systems are designed to extinguish fires by displacing the oxygen in an enclosed space. This makes them well suited for protecting spaces with electrical equipment and for fires involving flammable liquids or gases, where an inert gas can rapidly starve the flame without causing liquid residue or water damage to sensitive gear. They pose a serious asphyxiation risk to occupants, so they’re used in unoccupied or strictly controlled areas. They aren’t appropriate for cooking oil fires (Class K) or metal fires (Class D), which require special agents designed for fats/oils and for reacting with metal, respectively. So the best match is fires involving flammable gases or liquids and electrical equipment.

Carbon dioxide fixed extinguishing systems are designed to extinguish fires by displacing the oxygen in an enclosed space. This makes them well suited for protecting spaces with electrical equipment and for fires involving flammable liquids or gases, where an inert gas can rapidly starve the flame without causing liquid residue or water damage to sensitive gear. They pose a serious asphyxiation risk to occupants, so they’re used in unoccupied or strictly controlled areas. They aren’t appropriate for cooking oil fires (Class K) or metal fires (Class D), which require special agents designed for fats/oils and for reacting with metal, respectively. So the best match is fires involving flammable gases or liquids and electrical equipment.