Safety Alert
Dropped Object Due to Corroded Deluge Flange
Dropped Object Due to Corroded Deluge Flange
- IADC
- Safety Alert
- IADC Alert 25-4
- CorrosionDropped ObjectsStructural and Asset Integrity
- Dropped objectsLine of fire
- Lifting operations
- CraneLifting accessories
- Upstream oil and gas
Summary
Following placement of a lower completion assembly, a retracting crane’s twin hook stinger swung and struck a deluge-line blanking flange. The 4.95 kg flange detached and fell 4.5 metres onto the drill floor, landing approximately 1.5 metres from the nearest person. The incident was classified as having fatality potential.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Line of fire; struck-by hazards.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
The alert concerns a deluge flange falling after corrosion weakened its condition.
IADC Alert 25-4. Themes: corrosion, dropped objects, structural and asset integrity.