Safety Flash
High potential near miss: Dropped object during piggyback drilling operations
High potential near miss: Dropped object during piggyback drilling operations
- IMCA
- Safety Flash
- IMCA SF 17/19
- Competence and TrainingDropped ObjectsHuman FactorsMachinery and Equipment
- Dropped objectsHuman factors
- Drilling
- Operator displays and control interfacesWinch
- Competence and trainingHuman-centred designPreventive maintenanceRisk assessment
Summary
A safety flash describes inadvertent sample-winch activation during piggyback drilling. An 11 kg overshot snagged on a ladder safety hoop, separated from its wire and fell approximately 8 m, without injury or damage. Lessons address console ergonomics, design risk assessment, familiarisation assessment and preventive maintenance documentation.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Human factors; human performance; ergonomics.
Classifications: Drilling; well drilling.
Classifications: Operator displays and control interfaces.
Classifications: Winch; winches.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Human-centred design.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Risk assessment; hazard assessment.
Summary
Operating the wrong drill-console lever lifted and released an 11-kilogram tool onto the drill floor.
IMCA SF 17/19. Themes: competence and training, dropped objects, human factors, machinery and equipment.