What is the appropriate action regarding Fresh Air Dampers during a smoke situation?

During a smoke situation, the appropriate action regarding Fresh Air Dampers is to shut them off. This measure is crucial because keeping Fresh Air Dampers open would allow smoke to infiltrate the building or area, exacerbating the situation and putting individuals at greater risk. By closing the dampers, you help to contain the smoke within the affected area and prevent it from spreading to other parts of the system or building, which could lead to more significant hazards.

In situations where smoke is present, the focus should be on ensuring that clean air is preserved in evacuation routes and areas where people may remain, as well as controlling the movement of smoke. Other actions like activating emergency ventilators may be necessary, but the primary immediate response should be to close the Fresh Air Dampers to maintain the integrity of the air supply and control the smoke's path effectively.