Cause & Consequence
- Collapse, overturn or failure of lifting equipment
Incident Location
Any Location Type
Incident Activity
Lifting, crane, rigging, deck operations
Lessons Identified
•
Crane being used in Lift From Supply Vessel (LFSV) mode.
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Crane hydraulic pressure system decayed to zero when Framo tripped.
•
Framo system restored whilst in LFSV mode – brake released by design in this mode.
•
Combination of position of ELLS (Emergency load lowering system) flow control valve & inherent oil leakage within motor allowed winch motor to descend faster than expected.
Incident Recommendations
- Evaluate and revise training, add assessment module and roll out to all Crane Operators.
- Create operating and emergency procedures. Incorporate suspended load exercises into HSSEQ plan
- Consider LFSV mode change to automatic.
- Hasten delivery of new crane Operating Manuals.
- Assess the close out effectiveness of Maersk engineering change procedure
- Carry out a reliability review of the Framo System.
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