What is the first procedure to follow for active de-smoking?

The first procedure to follow for active de-smoking is to establish smoke control boundaries. This step is crucial because it defines the areas where smoke can spread and helps in determining how to contain it effectively. Establishing smoke control boundaries ensures that efforts to reduce smoke concentration are concentrated in specific areas, preventing it from moving into zones where it can cause more harm, such as areas with occupants who need evacuation or rescue.

By clearly defining these boundaries, responders can implement strategies that are effective in controlling smoke and improving visibility and air quality. It also aids in coordinating the subsequent steps, such as establishing an exhaust point or a make-up air point, which are necessary for effective smoke removal. The objective of establishing smoke control boundaries is to create a safe environment for both the responders working to mitigate the situation and for any occupants that may still be present in nearby areas.