DG Exclusion Zones and Barricading

Question 1

What is the primary purpose of establishing an exclusion zone during a lifting operation?

Accepted Answer

To protect personnel from a falling or swinging load

Answer

To prevent damage to the crane

Answer

To mark where rigging equipment is stored

Answer

To indicate where the load will be set down

Question 2

Under WHS regulations, who is responsible for ensuring an exclusion zone is established during a crane lift?

Accepted Answer

The dogman (dogger)

Answer

The crane owner

Answer

The site supervisor

Answer

The WHS safety officer

Question 3

As a general rule, what minimum radius should an exclusion zone extend from a suspended load?

Accepted Answer

A distance equal to the height of the load above the ground

Answer

Half the height of the load above the ground

Answer

2 metres in every direction

Answer

Equal to the length of the sling being used

Question 4

What type of barrier is most appropriate for establishing a temporary exclusion zone during a lifting operation on a construction site?

Accepted Answer

Bunting, witches' hats, or barrier tape with signage

Answer

Permanent steel fencing

Answer

Painted lines on the ground only

Answer

Verbal warnings to nearby workers

Question 5

Under what condition may a person enter an exclusion zone during an active lifting operation?

Accepted Answer

Only when authorised by the dogman or person in charge of the lift

Answer

At any time if they are wearing appropriate PPE

Answer

Only with verbal permission from the crane operator

Answer

When the load is below 2 metres from the ground

Question 6

An unauthorised worker walks into the exclusion zone while a load is suspended. What is the FIRST action the dogman should take?

Accepted Answer

Signal the crane operator to immediately stop all crane movement

Answer

Shout a warning and continue the lift carefully

Answer

Complete the lift as quickly as possible to clear the hazard

Answer

Report the incident to the supervisor after the lift is done

Question 7

Which Australian standard provides the primary guidance on the safe use of cranes and exclusion zone requirements during lifting operations?

Accepted Answer

AS 2550.1 — Cranes, hoists and winches — Safe use

Answer

AS 1418.1 — Cranes, hoists and winches (Design)

Answer

AS 3569 — Steel wire ropes

Answer

AS 1353.1 — Flat synthetic-webbing slings