Safety Flash
Chain caught and broke
Chain caught and broke
- IMCA
- Safety Flash
- IMCA SF 18/23
- Control of WorkCrane and RiggingLifting Operations
- Human factorsMechanical failure
- Lifting operations
- Crane
- Competence and trainingSafety communication
Summary
During removal of a generator hydrogen gland, a chain fall’s pull chain snagged on a cover-sheet bolt and broke, without injury. The flash highlights the transition from chain falls to crane lifting, a lack of task-specific briefing and attention concentrated on the load rather than the lifting equipment.
Classifications: Human factors; human performance; ergonomics.
Classifications: Mechanical failure; equipment failure.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Crane; cranes.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Safety communication; toolbox talk; toolbox talks.
Summary
Crew were removing a hydrogen gland from a generator using a lifting attachment, two chain falls, and an overhead crane. One of the chain fall’s pull chains caught on a bolt on the top of the generator and broke.
IMCA SF 18/23. Themes: control of work, crane and rigging, lifting operations.