Safety Alert
High Potential Near Miss – Hoisting Line Disconnected from Drawworks Drum
High Potential Near Miss – Hoisting Line Disconnected from Drawworks Drum
- IADC
- Safety Alert
- IADC Alert 11-16
- Crane and RiggingDropped ObjectsLifting Operations
- Dropped objectsMechanical failure
- Well intervention
- Winch
- Upstream oil and gas
Read at IADCOpens the publisher’s page on iadc.org
Summary
A well-service rig experienced a hoisting-line disconnection from its drawworks, without injury or equipment damage. The alert identifies the potential for a travelling block to drop following loss of the line clamp. The blocks were elevated in the mast, with more than twenty line wraps on the drum.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Well intervention; workover; well servicing.
Classifications: Winch; winches.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
IADC Alert 11-16. Themes: crane and rigging, dropped objects, lifting operations.