How must a slightly damaged plaster wall be repaired to prevent asbestos dust dispersion?

• A. Sand vigorously and apply asbestos-containing compound.
• B. Use highly adhesive film or asbestos-free joint compound without sanding.
• C. Remove and replace the plaster entirely.
• D. Use water-based paint to seal.

Answer: (B)

To prevent asbestos dust dispersion, the repair should minimize disturbing the plaster while creating a strong, sealed surface with asbestos-free materials. A highly adhesive film or an asbestos-free joint compound that can be applied without sanding achieves that: it patches the small damage and binds firmly to the wall, forming a smooth, intact surface without generating dust. Sanding would knock fibers loose if asbestos is present, and using an asbestos-containing compound would defeat the safety goal. Removing and replacing the plaster is unnecessarily invasive for minor damage, and sealing with water-based paint alone doesn’t actually repair the damage or reliably prevent fiber release.