Safety Flash
Near miss: Failure of subsea lifting equipment
Near miss: Failure of subsea lifting equipment
- IMCA
- Safety Flash
- IMCA SF 18/17
- Control of WorkDivingLifting Operations
- Dropped objects
- Diving operationsLifting operationsRigging
- Lifting accessories
- Operating and work proceduresOperational supervisionPositive retention and reliable securingRisk assessment
- Marine industry
- Subsea
Summary
During seabed spool removal, a load supported by two lift bags rose uncontrollably before falling back to the seabed after partial bag deflation. Investigation suggested missing hold-back lines as the immediate cause. The flash emphasises following dive plans and procedures, applying assessed mitigations and ensuring supervisor accountability.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Diving operations; diving; commercial diving.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Operating and work procedures.
Classifications: Operational supervision.
Classifications: Positive retention and reliable securing.
Classifications: Risk assessment; hazard assessment.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Subsea; underwater worksite.
Summary
A dummy spool connected to two lift bags made a rapid and uncontrolled ascent to the surface.
IMCA SF 18/17. Themes: control of work, diving, lifting operations.