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Near-miss: Fault spotted in subsea lifting wire - DEV imca
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Near-miss: Fault spotted in subsea lifting wire

What happened?

During diving operations at 10 msw, it was noticed that there was a slight gap in the lay of the diver launch and recovery (LARS) clump weight wire. The diver was asked to visually inspect the affected area. It was observed on the divers’ helmet camera, and afterwards confirmed by the diver, that no rope strand was broken, only that there was strand protrusion from the rope lay/weave. The following day the rope was re-checked by the dive team & client and a few strands of the clump weight rope were found to be out of the rope lay/weave.

What lessons were learnt, and what actions were taken?

  • Ropes should be monitored frequently to avoid stress due to uneven movements and weather conditions, and an appropriate record kept;
  • Ropes and sockets should be inspected before each dive;
  • Any small defects, damage or abnormality on ropes should be reported immediately;
  • Load testing should be carried out as appropriate after any changes and terminations;
  • Precautions should be in place to avoid stress on ropes during diving caused by weather conditions.
  • Ropes with core or strand protrusion should be immediately discarded or, provided the remaining length of rope is in a serviceable condition, have the affected section removed.

 

Members may also wish to review the following:

Safety Event

Published: 15 June 2017
Download: IMCA SF 15/17

Relevant life-saving rules:
IMCA Safety Flashes
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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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