Pick the best sequence of events: Post signs, pre-clean, plasticize, remove

Pick the best sequence of events: Post signs, pre-clean, plasticize, remove

• A. Pre-clean, Post signs, Plasticize, Remove
• B. Post signs, Pre-clean, Plasticize, Remove
• C. Plasticize, Post signs, Pre-clean, Remove
• D. Remove, Post signs, Pre-clean, Plasticize

Answer: (B)

Post signs first to warn and restrict access, then pre-clean to remove loose debris and cut down dust before sealing, then plasticize to encapsulate and lock fibers in place, and finally remove the material under containment. This order minimizes airborne fibers by tackling access control, dust reduction, and containment before removal. Starting with cleaning or sealing out of sequence can allow dust to spread or fibers to become airborne, and removing before encapsulation defeats the protective step that keeps fibers from escaping during removal.

Post signs first to warn and restrict access, then pre-clean to remove loose debris and cut down dust before sealing, then plasticize to encapsulate and lock fibers in place, and finally remove the material under containment. This order minimizes airborne fibers by tackling access control, dust reduction, and containment before removal. Starting with cleaning or sealing out of sequence can allow dust to spread or fibers to become airborne, and removing before encapsulation defeats the protective step that keeps fibers from escaping during removal.