EWP Environmental and Weather Conditions 1

Question 1

According to most EWP manufacturer specifications and Australian standards, operations should cease when wind speed exceeds which threshold?

Accepted Answer

12.5 m/s (45 km/h)

Answer

Most EWP manufacturers specify a maximum operating wind speed of 12.5 m/s (45 km/h), though operators must always verify the specific limit in the machine's manual.

Question 2

EWP operations should be suspended if a lightning strike is observed within approximately what distance from the worksite?

Accepted Answer

8 km

Answer

Australian industry safe work guidelines recommend ceasing EWP operations when lightning is within 8 km, as an elevated platform presents a significant electrocution risk.

Question 3

What effect does rain have on the safe operation of an EWP?

Accepted Answer

It reduces traction and stability and may affect electrical components

Answer

Rain reduces ground traction, can soften the ground beneath outriggers, and may compromise electrical components, all of which increase the risk of EWP incidents.

Question 4

Why is it important to check local weather forecasts before commencing EWP operations?

Accepted Answer

To anticipate weather changes that could affect safe operation throughout the shift

Answer

Checking forecasts allows the PCBU, supervisor, and operator to plan work around dangerous weather windows and prepare contingency procedures before operations begin.

Question 5

Which condition would most significantly increase the risk of EWP instability when working at height?

Accepted Answer

Strong gusty winds combined with a fully elevated and extended boom

Answer

Gusty wind forces acting on a fully extended boom create maximum leverage and lateral load, significantly increasing the risk of the EWP overturning.

EWP Licence Practice Test

EWP Licence Practice Test

EWP Environmental and Weather Conditions 1