What is the primary purpose of using a negative air system during asbestos abatement projects?

The primary purpose of using a negative air system during asbestos abatement projects is to protect against large-scale release of fibers. This system works by creating a lower air pressure in the abatement area compared to the outside environment. By doing so, any airborne asbestos fibers released during the removal or disturbance of asbestos materials are drawn into the containment area and filtered out before the air is released back into the environment. This helps to prevent contamination of surrounding areas and minimizes the risk of exposure for workers and the general public.

In contrast, enhancing visibility during work, keeping the work area warm, and reducing the amount of dust generated are not the primary functions of a negative air system. While visibility might be important in any work environment, it is not specifically addressed by the negative air system. Similarly, maintaining temperature or dust reduction can be achieved through other means and are not the primary objectives of implementing a negative air pressure strategy in the context of asbestos abatement.