IPAF Overhead Hazards & Site Risks

Question 1

What is the minimum safe distance from overhead power lines when using a MEWP, and how is it determined?

Accepted Answer

As specified by the Distribution Network Operator (DNO) for the specific line voltage — typically at least 6 metres for 11 kV and above

Answer

1 metre for all voltage levels

Answer

The operator judges safe distance visually

Answer

2 metres from any overhead cable

Question 2

What physical controls should be in place when a MEWP operates near overhead power lines?

Accepted Answer

Goal posts and height restrictors that physically prevent the MEWP from approaching the exclusion zone

Answer

Warning signs only

Answer

A verbal briefing to the operator

Answer

Yellow and black tape around the work area

Question 3

What is 'flashover' when a MEWP boom approaches an overhead power line?

Accepted Answer

Electricity arcing from the line to the MEWP boom without direct contact, potentially killing the operator and persons on the ground

Answer

A warning light that activates near power lines

Answer

The reflection of the power line in the MEWP's metallic surfaces

Answer

Flashover only occurs if the boom actually touches the line

Question 4

What should an operator do if the MEWP inadvertently contacts an overhead power line?

Accepted Answer

Stay in the platform, warn people not to touch the machine, and call the emergency services — do not attempt to climb down

Answer

Jump clear immediately to avoid electrocution

Answer

Turn off the MEWP's engine to cut the circuit

Answer

Move the MEWP away by driving it clear of the line

Question 5

What pre-task planning is required before using a MEWP in an area with overhead hazards?

Accepted Answer

Survey the work area for all overhead hazards, consult with relevant authorities, establish exclusion zones, and confirm the MEWP's maximum height does not create risk

Answer

Only a brief visual check before starting

Answer

Overhead hazards are the responsibility of the site manager, not the MEWP operator

Answer

No pre-task planning is needed if the MEWP is used during daylight

Question 6

What hazard do suspended ceilings or fragile roofing materials present to MEWP operations indoors?

Accepted Answer

Contact with the MEWP boom or platform can dislodge material, creating falling object risk and damaging structures that may be load-bearing

Answer

Suspended ceilings are a fire hazard only

Answer

Indoor MEWPs cannot reach suspended ceilings

Answer

Only relevant if the MEWP is over 10 metres platform height