Safety Flash
Lifting post failure on survey equipment
Lifting post failure on survey equipment
- IMCA
- Safety Flash
- IMCA SF 03/12
- Crane and RiggingLifting OperationsStructural and Asset Integrity
- Mechanical failureStructural and asset integrity
- Diving operationsLifting operationsRigging
- Lifting accessories
- Positive retention and reliable securingStop-work authority
- Subsea
Summary
A survey equipment lifting post fractured during deployment through the splash zone at about 5 m depth. A safety tether and electrical umbilical retained the equipment, which divers re-rigged for recovery. The investigation identified inadequate allowance for splash-zone forces; actions included suspending the arrangement and requiring a basket with certified lifting points pending suitable design and testing.
Classifications: Mechanical failure; equipment failure.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Diving operations; diving; commercial diving.
Classifications: Lifting operations; load lifting; hoisting.
Classifications: Rigging; slinging.
Classifications: Lifting accessories; lifting gear; rigging gear.
Classifications: Positive retention and reliable securing.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Subsea; underwater worksite.
Summary
A lifting post fractured while survey equipment was being deployed through the splash zone.
IMCA SF 03/12. Themes: crane and rigging, lifting operations, structural and asset integrity.