Safety Flash
Dropped Object from Derrick
Dropped Object from Derrick
- IMCA
- Safety Flash
- IMCA SF 26/20
- Contractor ManagementDropped ObjectsInspection and MaintenanceStructural and Asset Integrity
- Dropped objectsMechanical failure
- DrillingInspection and maintenance
- Contractor managementExclusion zonesPositive retention and reliable securingPreventive maintenance
- Upstream oil and gas
- Vessel
Summary
Part of a seized guide sheave fell approximately 15 m onto a drilling vessel’s drill floor while drill pipe was being run. Nobody was injured. The flash identifies design, installation, inspection and retention shortcomings, and describes changes to preventative maintenance, contractor reporting and protected standing areas within revised red zones.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Contractor management; contractor assurance.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Positive retention and reliable securing.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A failed guide sheave fell onto the drill floor, prompting improvements to equipment inspection, contractor quality control and dropped-object exclusion zones.
IMCA SF 26/20. Themes: contractor management, dropped objects, inspection and maintenance, structural and asset integrity.