Question 163Safety & Environmental - QMED

The correct answer is D) Keeping the duct interior clean. Keeping the duct interior clean is the most effective way to reduce the possibility of an interior ventilation duct fire from rapidly spreading. Buildup of combustible materials, such as dust and lint, on the interior surfaces of the duct can provide fuel for a fire, allowing it to spread quickly through the duct system. By maintaining a clean interior, the risk of a fast-moving duct fire is minimized. The other options, while potentially helpful, are not as effective as keeping the duct interior clean. Cleaning the exterior of the duct (option A) does not address the primary issue of combustible materials inside the duct. Having portable CO2 (option B) or charged fire hoses (option C) at the duct openings may help contain a fire, but do not prevent the initial fire from spreading rapidly through the duct.