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Faulty bearing on construction hoist causes cab to strike tower

Incident Investigation

Faulty bearing on construction hoist causes cab to strike tower

February 10, 2020

Elevating Devices

Reference Number:

II-978382-2020 (#16593)



Location: Vancouver, BC

Regulated industry sector: Elevating Devices - Construction / personnel hoist / man lift

Incident overview

As a construction hoist traveled down, the cab began to sway and rock excessively, then struck the tower causing significant damage to a 130’ tower section. Other components of the cab were also scraping the tower as the cab traveled up and down. The likely cause is a faulty bearing in one of the guide rollers.

 

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