Safety Flash
Near-miss: Rigging recovered with missing nut from tri-plate shackle
Near-miss: Rigging recovered with missing nut from tri-plate shackle
- IMCA
- Safety Flash
- IMCA SF 16/16
- Competence and TrainingCrane and RiggingInspection and MaintenanceLifting Operations
- Human factorsMechanical failure
- Inspection and maintenanceLifting operationsRigging
- Lifting accessories
- Competence and trainingPositive retention and reliable securingPre-use checksSafety communication
- Vessel
Summary
A near miss involved a missing shackle nut discovered when tri-plate rigging was recovered to a vessel deck. Investigation identified incorrect cotter-pin installation, difficult inspection access, inadequate checks, communication failures and competency assurance gaps. Actions included revised checklists, risk assessment and lift planning, securing-pin checks and subcontractor competency vetting.
Classifications: Human factors; human performance; ergonomics.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
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: Positive retention and reliable securing.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A missing shackle nut was discovered after rigging recovery, revealing inadequate securing, inspection, communication and competency controls.
IMCA SF 16/16. Themes: competence and training, crane and rigging, inspection and maintenance, lifting operations.