Safety Flash
Dropped object – unexpected release of spool
Dropped object – unexpected release of spool
- IMCA
- Safety Flash
- IMCA SF 23/21
- Competence and TrainingCrane and RiggingDropped ObjectsLifting Operations
- Dropped objectsMechanical failure
- Lifting operationsRigging
- Lifting accessories
- Competence and trainingContractor managementOperating and work proceduresRisk assessment
- Marine industry
- SubseaVessel
Summary
A spool fell to the seabed during relocation using a vessel crane and recertified lifting yoke. Unretracted stop knobs imposed unplanned forces, causing yoke failure. Findings highlight incomplete procedures, limited tooling expertise and misunderstood communications. Actions address tooling design, contractor competence, procedure interfaces and risk assessment.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Contractor management; contractor assurance.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Subsea; underwater worksite.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
During offshore installation activities there was an unexpected release of the load resulting in it falling to the seabed
IMCA SF 23/21. Themes: competence and training, crane and rigging, dropped objects, lifting operations.