What type of enclosure is commonly used in asbestos work?

The most suitable choice for asbestos work is negative pressure enclosures or containment units. These enclosures are specifically designed to prevent the spread of asbestos fibers during removal or abatement activities. By utilizing a system that maintains negative pressure inside the containment unit, any airborne contaminants are effectively drawn into the unit rather than escaping into the surrounding environment.

This method is crucial in protecting both workers and the public from exposure to harmful asbestos fibers, which can have serious health implications. Additionally, negative pressure enclosures are typically equipped with HEPA filtration systems that further help in filtering out any asbestos fibers before the air is released back into the environment.

In contrast, open workspaces with minimal containment would pose significant risks by allowing asbestos fibers to freely disperse. Temporary fences and glass enclosures do not provide the necessary containment and air pressure control required to ensure safety in asbestos-related work environments.