Safety Alert
Safety Alert 191 - Drillship Draw Works Failure
Safety Alert 191 - Drillship Draw Works Failure
- BSEE
- Safety Alert
- BSEE Safety Alert 191
- Inspection and MaintenanceMachinery and Equipment
- Dropped objectsMechanical failure
- DrillingInspection and maintenance
- Winch
- Management of changeOperating and work proceduresPreventive maintenanceRisk assessment
- Upstream oil and gas
- Vessel
Summary
A drillship drawworks brake failure led to falling equipment and loss of the riser assembly and subsea blowout preventer stack. Investigation identified excessive brake clearance and lubricant contamination. The alert recommends system hazard analysis, manufacturer-aligned operation and maintenance, brake inspection and adjustment, and assessment of programme changes.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Winch; winches.
Classifications: Management of change; MOC; change management.
Classifications: Operating and work procedures.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Risk assessment; hazard assessment.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.
BSEE Safety Alert 191. Themes: inspection and maintenance, machinery and equipment.