Safety Flash
Failure of 64mm polyester rope in subsea mooring operations
Failure of 64mm polyester rope in subsea mooring operations
- IMCA
- Safety Flash
- IMCA SF 34/21
- Control of WorkSimultaneous OperationsVessel and Mooring
- Human factorsMechanical failure
- Lifting operationsMarine operations
- CraneWinch
- Competence and trainingOperating and work proceduresSimultaneous operations coordinationStop-work authority
- Marine industry
- Subsea
Summary
A 64mm polyester rope parted while subsea equipment was being lowered, following overload from unsynchronised crane and deployment-winch movements. Nobody was injured, but equipment was damaged. The flash examines missed operator concerns, simultaneous operations and unused stop-work authority, and describes tension indication, improved coordination and retraining in existing procedures.
Classifications: Human factors; human performance; ergonomics.
Classifications: Mechanical failure; equipment failure.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Marine operations; maritime operations.
Classifications: Crane; cranes.
Classifications: Winch; winches.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Operating and work procedures.
Classifications: Simultaneous operations coordination; SIMOPS; simultaneous operations.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Subsea; underwater worksite.
Summary
A 64mm polyester rope parted during the lowering of subsea equipment to depth
IMCA SF 34/21. Themes: control of work, simultaneous operations, vessel and mooring.