Investigation Report
IBOP Actuator Plate Fell onto Rig Floor During Drilling
02-14-2015 23:30 G16997 WR 469 Dropped Object / Equipment Failure
- BSEE
- Investigation Report
- Unknown
- Dropped objectsMechanical failure
- DrillingInspection and maintenance
- Blowout preventer
- Upstream oil and gas
- Offshore installation
Summary
An investigation examines an IBOP actuator plate falling approximately 140 feet onto the rig floor during drilling in Walker Ridge block 469. Tight clearances allowed contact between plates and lever arms, shearing retaining bolts. Manufacturer-led corrective work involved grinding potential impact areas; BSEE notified other rigs using the same equipment.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Drilling; well drilling.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Blowout preventer; BOP; blow-out preventer.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.