Describe the basic components of a negative pressure enclosure (NPE).

• A. Physical barriers enclosing ACM, a controlled negative pressure environment created by exhaust ventilation with HEPA filtration, airlocks or entry/exit decontamination units, and restricted access.
• B. A tent with no negative pressure and no filtration.
• C. A fan that blows air outward with no containment.
• D. A sealed room with positive pressure.

Answer: (A)