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Wire rope sling failed during lifting operations - DEV imca
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Wire rope sling failed during lifting operations

What happened?

The Marine Safety Forum (MSF) has published Safety Alert 18-18 regarding the failure of equipment on an anchor handling vessel (AHV) during chain handling operations.

The crew were preparing a chain (76mm in length) for a decanting operation onto a semi-submersible mobile offshore drilling unit (MODU). Whilst recovering the chain, the starboard-aft tugger wire was connected to the chain, using a 6Te wire rope sling. The chain was recovered and was approximately a quarter of the way up the deck when the wire rope sling failed, causing the 76mm chain to fall onto the deck and into the AHV locker. No one was injured.

What actions were taken?

  • The crew assessed the damage to the wire rope sling. After inspection, the sling was discarded;
  • All the equipment used during the operation was inspected and no damage was found;
  • A new 10Te sling was to be used, the chain reconnected and successfully recovered.

What lessons were learned?

  • Equipment inspections should be made before any operations are undertaken;
  • Ensure all lifting equipment is suitable and fit for purpose.
  • A clear deck policy was in place when this incident took place – it is important to make sure that you have a clear deck policy in place when undertaking operations. This will, as in this incident, prevent any injuries from occurring

Members may wish to refer to the following incidents

Safety Event

Published: 3 August 2018
Download: IMCA SF 17/18

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.