Crane block sheave guard dropped from 25 metres

During the lift, a member of the deck crew heard a loud noise. On investigation, he found that the securing pin for the main block sheave guard had detached from the main crane block and fallen approximately 25 metres to the deck below.

Crane operations were immediately halted and the crane main block was brought to deck level for inspection. The fallen sheave guard weighed 0.8 kg and landed 2 metres from a member of the deck crew. This is a potential fatality on the DROPs calculator.

The sheave guide was secured by a spring clip. The crane block was supplied with this spring clip configuration. It cannot be determined if the clip had failed or was not installed correctly.