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The Catapult Effect - MEWP Safety

In 2022, IPAF released a safety awareness leaflet specifically focused on the dangers of the MEWP Catapult Effect which formed part of their wider initiative titled "Don't Fall for it".

So, what is the Catapult Effect?

Take a look at the video below which outlines what causes the Catapult Effect.

When stored energy on the boom caused by an impact or going over rough terrain, causes the boom to flex, this is what creates the catapult effect and potentially the operator to be ejected from the platform.

To minimise the risk of the catapult effect, any work at height should be properly planned and has adequate risk-control measures in place. These can be broken down into three categories:

Planning the job

  • A thorough site risk assessment and rescue plan must be in place and understood by all those involved

  • Always carry out MEWP pre-start checks. If unsafe: isolate, tag, and report it to the relevant person

  • Operators should be trained and familiarised with the MEWP

  • Wear the correct personal protective equipment (PPE) and personal fall protection equipment (PFPE)

  • Attach the lanyard to designated anchor point

Environment

  • Walk the route. Spot hazards, voids, obstructions etc

  • Check ground conditions and keep monitoring during operation

  • Keep the MEWP segregated from other work areas, traffic and pedestrians

Operating the MEWP

  • Observe your surroundings at all times

  • When driving a MEWP, use a banksman or spotter to identify oncoming hazards

  • Take care when driving over rough ground and use a slower drive speed

  • Never unclip from the anchor point until exiting the platform at ground level

  • Heavy items that fall from the platform or strike the MEWP can also cause a catapult effect

IPAF's guidance provides vital information and guidance on what causes the Catapult Effect and how to avoid accidents of this nature.

IPAF believe that experienced users of MEWPs will have experienced the catapult effect in a boom at least once and provide some key guidance on preventative measures.

Download IPAF's MEWP Catapult Effect leaflet from the IPAF Website.

Browse our IPAF Training courses, such as Safety Harness (Ha and HU), or speak to our team today.

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