Why are entrapments usually so serious?

Entrapments are situations in which the operator or occupant of a MEWP becomes trapped between the MEWP controls or platform guardrails and an immovable object or external structure. If an operator becomes trapped, it often prevents them lowering or moving the MEWP safely away, leading to crushing injuries to all persons trapped. Operators will often be unable to rectify the situation and might find operating the controls makes the situation worse.

To minimise entrapment risk, operators, supervisors and managers should:

• Carry out a site assessment prior to using a MEWP.
• Consider the route the MEWP will travel.
• Identify potential crushing areas where the platform and controls will be positioned to carry out work.
• Carry out a site assessment to include the selection of the appropriate MEWP, this should consider the size and manoeuvrability of the jib and platform.
• Consider secondary-guarding options to assist in avoiding entrapment (these vary according to manufacturer and can be a useful aid but should not be relied upon instead of proper planning, risk assessment etc).
• Ensure operators constantly observe and looking out for potential crushing areas.
• Be mindful of trapping or crushing risk to ALL occupants of the MEWP.

See also: Back to Basics and Plan Ahead safety campaigns, Walking the MEWP, Overhead Obstructions and Rescue Procedures Toolbox Talks, Secondary guarding guidance, IPAF’s Site Assessment course.