Working at height with a Mobile Elevating Work Platform (MEWP) provides collective protection through guardrails. However, as highlighted by INRS (French
National Research and safety Institute for occupational health) and OPPBTP (Professional body for occupational safety and health in
the construction area) in their guide “Use of a fall arrest system in MEWPs: recommendations and guidance for selecting suitable PPE”, the risk of ejection remains very real. A loss of balance, an impact, or the “catapult effect” can throw the operator out of the platform, with serious consequences.
Wearing a harness with a lanyard is not systematically required for all MEWPs. It is first and foremost the MEWP manufacturer’s instruction manual that defines the conditions of use and specifies whether a fall arrest system is required. In such cases, it becomes mandatory for the operator.
Nevertheless, INRS and OPPBTP strongly recommend the systematic use of a full body harness compliant with EN 361 connected to a short lanyard with energy absorber compliant with EN 355, particularly for Group B MEWPs (telescopic/multi-directional booms). This is indeed the only effective way to mitigate the risk of ejection and fall.