Workplace Health and Safety Queensland released a safety alert relating to falling objects from personnel and material hoists following an incident in May 2018, where a piece of a 16 millilitre steel re-enforcement bar fell from a personnel and material hoist car on a construction site at the Gold Coast.
According to investigations, polycarbonate panelling which was originally attached to the car was removed to allow for air flow through the car. However, after removing the panelling, the doors were no longer balanced. To balance the door, a steel weight was zip tied to the outside of one of the doors. But the zip failed and the bar fell to the ground.
“Zip ties should not be used to secure weights or components to the outside of personnel and material hoists or any other plant where the weight can pose a risk it if becomes detached,” said WHSQ in its alert.
“If weights are attached to hoist car doors, refer to the hoist manufacturer instructions. In the absence of manufacturer instructions, a competent person should specify the method of attaching the weight to the car, based on sound engineering principles.
“The use of through bolts, passing through the weight and the car door, with a nut on the opposite side of the door, is a preferred alternative. Where bolts are used, the nut should be prevented from loosening by the use of an effective locking system.”
Further information about this safety alert is available on Workplace Health and Safety Queensland’s website.
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