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Dropped object: crane floodlight - DEV imca
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Dropped object: crane floodlight

What happened?

A floodlight fell from its position on the knuckle boom of the vessel’s crane. The floodlight arrangement was supported on a stainless steel bracket, comprising a bar and attachment plate that is bolted to the knuckle boom head. This arrangement allowed the floodlight to swivel and illuminate the load area.

What went wrong? What were the causes?

The weld between the bar and the attachment plate failed due to the poor quality of the weld, which upon inspection revealed undercut, poor penetration and overdressing, resulting in a minimal fusion area which was insufficient to withstand vibration and exposure in the marine environment.

The underlying causes were found to be:

  • Inadequate engineering;
  • Inadequate QC/monitoring of design and build at point of fabrication (crane manufacturer).

What actions were taken?

The floodlight was restored to its original position, with a security chain installed as a retrofit attachment.

Members may wish to review the following:

Safety Event

Published: 10 September 2018
Download: IMCA SF 20/18

Relevant life-saving rules:
IMCA Safety Flashes
Submit a Report

IMCA Safety Flashes summarise key safety matters and incidents, allowing lessons to be more easily learnt for the benefit of all. The effectiveness of the IMCA Safety Flash system depends on Members sharing information and so avoiding repeat incidents. Please consider adding safetyreports@imca-int.com to your internal distribution list for safety alerts or manually submitting information on incidents you consider may be relevant. All information is anonymised or sanitised, as appropriate.

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IMCA makes every effort to ensure the accuracy and reliability of the data contained in the documents it publishes, but IMCA shall not be liable for any guidance and/or recommendation and/or statement herein contained. The information contained in this document does not fulfil or replace any individual’s or Member's legal, regulatory or other duties or obligations in respect of their operations. Individuals and Members remain solely responsible for the safe, lawful and proper conduct of their operations.