On the day of the incident, a group of workers was tasked to separate a telescopic boom into its individual sections. The separated sections were placed as shown in the figure, using an overhead travelling crane. After placing Boom-1 in its position, the crane operator began to hoist the chain slings away. As the chain slings were being hoisted away, Boom-1 toppled onto a nearby worker and pinned him against a steel block. He was conveyed to the hospital where he succumbed to his injuries.
Recommendations
1. Crane operator should ensure that lifting gears are completely dislodged from the load before they are hoisted away. This is to prevent any entanglement of the lifting gears with the load.
2. All personnel involved in a lifting task, including the lifting supervisor, rigger, signalman and the crane operator should remain vigilant during the entire lifting operation.
3. Workers should stay away from the lifting zone and away from the lifting object.
(Extracted from WSH Alert dated 21 Jan 2009)
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