Safety Alert
Safety Alert 369 - Non-OEM Parts Were Significant Causal Factors in Two Recent Loss of Control of Traveling Block Incidents
Safety Alert 369 - Non-OEM Parts Were Significant Causal Factors in Two Recent Loss of Control of Traveling Block Incidents
- BSEE
- Safety Alert
- BSEE Safety Alert 369
- Inspection and MaintenanceMachinery and Equipment
- Dropped objectsMechanical failure
- DrillingInspection and maintenance
- WinchWire rope
- Management of changePositive retention and reliable securingPreventive maintenance
- Upstream oil and gas
Summary
Two travelling-block incidents involved incorrect non-OEM parts: a broken brake assembly pin in 2019 and improperly sized drill-line clamps and bolts in 2017. The alert recommends that operators consider drawworks inspections, manufacturer-aligned maintenance, verification of critical component dimensions and materials, and management-of-change review for non-OEM parts.
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: Wire rope; steel wire rope.
Classifications: Management of change; MOC; change management.
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
The alert identifies non-original equipment parts as causal factors in loss-of-control incidents involving travelling blocks.
BSEE Safety Alert 369. Themes: inspection and maintenance, machinery and equipment.