What is the significance of the perimeter line in an asbestos containment setup?

• A. It marks the boundary of the control zone and ensures proper decontamination, access restrictions, and containment to prevent fiber spread.
• B. It indicates where to place warning signs.
• C. It marks the overall project boundary.
• D. It shows the air sampling locations.

Answer: (A)

The perimeter line marks the boundary of the control zone in an asbestos containment setup. It defines where work begins and where entry and exit must go through decontamination, creating a controlled flow that keeps fibers from spreading into clean areas. This boundary drives the entire containment plan—where you place negative pressure, air filtration, and decontamination facilities like airlocks, showers, and changing rooms, and it tells workers how to move between contaminated and clean zones. While warning signs, the overall project boundary, and sampling locations play important roles, they don’t establish the containment boundary or the required decontamination workflow needed to prevent fiber dispersion.