Fire extinguishers are rated not only for their ability to control a specific type of fire, but also for the extinguishing agent's ability to prevent rekindling.

Fire extinguishers are rated not only for their ability to control a specific type of fire, but also for the extinguishing agent's ability to prevent rekindling.

• A. Rekindling
• B. Cooling
• C. Spreading
• D. Smoldering

Answer: (A)

Extinguisher ratings include not only how well the agent stops the flames but also how well it prevents rekindling after the fire seems out. Rekindling means the fire re-ignites after it appears extinguished because heat or embers linger and can start flames again. That’s why this aspect is what the rating is signaling—the extinguisher should keep the fire from coming back. Cooling is one way an agent works, but the rating specifically addresses whether re-ignition can be avoided. Spreading and smoldering describe other fire behaviors and aren’t the focus of this rating criterion.

Extinguisher ratings include not only how well the agent stops the flames but also how well it prevents rekindling after the fire seems out. Rekindling means the fire re-ignites after it appears extinguished because heat or embers linger and can start flames again. That’s why this aspect is what the rating is signaling—the extinguisher should keep the fire from coming back. Cooling is one way an agent works, but the rating specifically addresses whether re-ignition can be avoided. Spreading and smoldering describe other fire behaviors and aren’t the focus of this rating criterion.