Exclusion Zones and Barricading Flashcards

When determining the size of an exclusion zone, which factor is the MOST critical consideration?

Answer: The potential swing radius and fall zone of the load

The potential swing radius and fall zone define the area that could be struck if control of the load is lost, making them the primary factors in sizing an exclusion zone.

When performing a lift near a live road or public area, what additional control measure is typically required beyond standard exclusion zones?

Answer: Obtaining a permit and implementing traffic management measures

Lifting over or near public areas typically requires a permit to work, a formal lift plan, and traffic management measures to protect members of the public.

How must the exclusion zone be managed when a crane is slewing (rotating) with a suspended load?

Answer: The exclusion zone must encompass the entire slewing arc of the crane and load

During slewing, the load travels through an arc, so the exclusion zone must cover the entire path of the crane's rotation to protect all workers in the vicinity.

What information about exclusion zones must be included in a formal lift plan?

Answer: Location, size, entry/exit points, and the responsible persons for the exclusion zone

A formal lift plan must document the size and location of exclusion zones, designated entry and exit points, and who is responsible for establishing and maintaining them.

During a long-duration lift where a load is held suspended while work is performed underneath, what must the dogman ensure?

Answer: The exclusion zone must be maintained for the entire duration the load remains suspended

The exclusion zone must remain in place for the entire duration that the load is suspended, as the falling load hazard exists at any time the load is off the ground.

Which condition would require the dogman to INCREASE the size of an already established exclusion zone?

Answer: Wind speed increases significantly, affecting load stability and swing

Increased wind speed can cause the load to swing further than anticipated, requiring the exclusion zone to be extended to account for the greater potential swing radius.

A dogging operation is taking place adjacent to an occupied office building. What is the MOST important consideration for the exclusion zone?

Answer: The exclusion zone must protect both site workers and building occupants, potentially requiring additional controls

When lifting adjacent to occupied buildings, the exclusion zone must account for the risk to building occupants, and additional controls such as restricting access to affected areas of the building may be required.