Near miss: Single wire strand protruded from original lay
- Safety Flash
- Published on 25 July 2017
- Generated on 26 December 2024
- IMCA SF 18/17
- 1 minute read
During deployment of the bell and clump weight from a vessel for subsea inspection of a riser line, it was observed that a single wire strand protruded from original lay (‘high stranding’).
What happened?
The bell was recovered, the clump weight wire was visually inspected, and it was determined that 60 m of damaged rope should be cut back. The damaged section was removed and the rope re-terminated.
Third party mandatory load test and certification of the item was carried out and certified as fit for purpose and diving operations resumed.
What lessons were learned?
- The clump weight should not remain subsea during periods of increased tidal current above the limit recommended for diving operations.
- There should be thorough visual inspection of all the ropes and sockets during recovery and deployment of clump weight.
- Ensure frequent monitoring for the ropes and sockets, and any findings recorded.
- Any small defects, damage or abnormality on ropes should be brought to the attention of the Competent Person.
- Precautions should be in place to avoid stress on ropes caused by adverse weather conditions.
Members may wish to review the following incident:
- Near-miss: Fault spotted in subsea lifting wire
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