Safety Flash
Object falling from height
Object falling from height
- IMCA
- Safety Flash
- IMCA SF 11/05
- Crane and RiggingDropped ObjectsInspection and MaintenanceMachinery and Equipment
- Dropped objectsMechanical failure
- Inspection and maintenance
- Functional testingPositive retention and reliable securingPreventive maintenance
- Upstream oil and gas
Summary
A 4.5 kg banana-sheave roller came loose and fell some 24 metres onto the drill floor, injuring nobody. Loosened bolts, insufficient design and maintenance, and management shortcomings were identified. Recommendations address sheave inspection, protective pins on roller bolts, equipment certification and review of planned maintenance management.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Functional testing; function test.
Classifications: Positive retention and reliable securing.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
A roller detached from a sheave and fell, with inadequate design, maintenance and lifting-equipment management identified as contributing factors.
IMCA SF 11/05. Themes: crane and rigging, dropped objects, inspection and maintenance, machinery and equipment.