Safety Flash
Uncontrolled ascent of lift bag
Uncontrolled ascent of lift bag
- IMCA
- Safety Flash
- IMCA SF 05/12
- Crane and RiggingDivingLifting Operations
- Risk management
- Diving operationsLifting operationsRigging
- Lifting accessories
- Competence and trainingOperating and work proceduresRisk assessmentSafety communication
- Subsea
Summary
A diver incorrectly connected underwater lift-bag rigging, allowing the partially inflated bag and small shackle to pass through a larger shackle and ascend uncontrolled. No injuries or equipment damage occurred. The flash discusses inadequate risk assessment, unclear instructions and insufficient checks, alongside procedure revisions, briefings and subsea rigging training.
Classifications: Risk management; risk evaluation.
Classifications: Diving operations; diving; commercial diving.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Operating and work procedures.
Classifications: Risk assessment; hazard assessment.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Subsea; underwater worksite.
Summary
Incorrectly connected lift-bag rigging allowed the partially inflated bag and associated components to ascend uncontrolled.
IMCA SF 05/12. Themes: crane and rigging, diving, lifting operations.