What is the function of Supplied Air Systems in asbestos work?

Supplied Air Systems play a crucial role in environments where workers may be exposed to hazardous materials, such as asbestos. The primary function of these systems is to deliver breathable air directly from an external source through a specialized air hose to the breathing mask worn by the worker. This setup ensures that the air provided is clean and free from contaminants, thereby protecting the respiratory health of workers in potentially dangerous environments.

Since asbestos fibers are a significant health hazard, utilizing a Supplied Air System allows workers to operate safely while performing tasks that may disturb asbestos-containing materials. The fresh air supply is critical for maintaining a safe work atmosphere, especially in enclosed or poorly ventilated spaces where the risk of inhaling harmful particles is high.

Other choices reflect functions that do not align with the specific role of Supplied Air Systems in asbestos work, making them unsuitable for this context. For instance, providing unfiltered air would pose a risk to health, supplying nitrogen is unrelated to breathing needs, and simply removing airborne asbestos fibers does not address the immediate need for breathable air. Thus, the correct function directly correlates to ensuring workers have access to clean air, making option B the accurate answer.