Investigation Report
Encoder Pinion and Shaft Assembly Dropped During BOP Gantry Crane Traversal
02-27-2021 04:20 G17001 WR 508 Crane - Dropped Object
- BSEE
- Investigation Report
- Unknown
- CorrosionDropped objectsMechanical failure
- Inspection and maintenance
- Crane
- Exclusion zonesPositive retention and reliable securingPreventive maintenance
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigates a dropped encoder pinion and shaft assembly during unloaded traversal of a BOP gantry crane aboard Deepwater Pontus. Water ingress through the upper cable gland caused corrosion of connection points. The assembly lacked secondary retention; restricted access kept personnel clear, and no injuries were reported.
Classifications: Corrosion; corrosion damage.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Crane; cranes.
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: Offshore installation; offshore platform; offshore rig.