Jan 24 (edited) • Supervision & Control Failures
Case Study 85: Overhead Crane Strikes Scissor Lift. Fatal Outcome
Incident Overview
During construction works at a UK university project, a scissor lift was knocked over by a crane, leading to a fatality and serious injury.
What Went Wrong
This was not “bad luck”. It’s an interface failure: plant movements + work-at-height platform in a shared envelope without adequate control.
Key Lessons
Plant interfaces must be controlled as one system
“Someone else’s plant” is still your risk
Exclusion zones must be enforced, not assumed
Safety Recommendations
Segregate routes and operating envelopes. Assign a controlling role with authority to stop movements. Treat the area as a single coordinated operation.
Incident source/ Reference:
British Safety Council
●LOLER Reg. 8 – Lifts must be coordinated and supervised.
●PUWER Reg. 11 – Prevent contact between moving plant and people.
●PUWER Reg. 9 – Competence must be assured for all roles.
●BS 7121-1 – Shared envelopes need strict control and exclusion zones.
●CDM 2015 – Simultaneous operations must be coordinated.
Wolf Lifting Dynamics – Safe Lifting UK | Case Study 85
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Case Study 85: Overhead Crane Strikes Scissor Lift. Fatal Outcome
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