Safety Flash
Offshore tank container rigging failure
Offshore tank container rigging failure
- IMCA
- Safety Flash
- IMCA SF 12/11
- Crane and RiggingLifting OperationsStructural and Asset Integrity
- Mechanical failureStructural and asset integrity
- Lifting operationsRigging
- Lifting accessories
- Non-destructive testing
Summary
Two offshore tank-container rigging incidents involved cold fractures of master links, with damage noticed before lifting. Certification was in order and loads remained within safe working limits. A forging defect was initially considered most likely; subsequent batch similarities prompted replacement of 32 rigging sets pending laboratory results.
Classifications: Mechanical failure; equipment failure.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Non-destructive testing; NDT; non-destructive examination; NDE.
Summary
A member has reported two incidents in which the rigging of an offshore tank container failed as a result of a cold fracture.
IMCA SF 12/11. Themes: crane and rigging, lifting operations, structural and asset integrity.