A 6-tonne water injection pump (WIP) was being transferred from floating production storage and offloading (FPSO) vessel to a marine supply vessel (MSV).
The pump was placed in a container for transport.
The cargo crew and crane operator on the FPSO prepared to lift the container onto the MSV.
The container started swinging during transfer and struck the FPSO’s hull four times.
The WIP broke its fastenings, slid around in the container, and struck the door open.
The WIP fell out of the container on the starboard side. It landed in the ocean metres away from a subsea flowline, with potential to strike a subsea flowline.
Why did it happen?
The WIP was incorrectly secured, and the fastener apparatus was not appropriate for the job. This caused the WIP to be an unbalanced load during lifting.
There were gaps in cargo crew training and crane preventative maintenance (PM).
The lift was considered routine but was actually a non-routine lift due to the nature of the load and operating conditions for the crane.
What did they learn?
Conduct rigging and lifting activities in accordance with standards.
Workers involved in lifting and rigging should have appropriate competency.
Ensure preventative maintenance on equipment is up to date.
For turret FPSOs, establish subsea exclusion zones for lifting operations.
Ask yourself or your crew
What risk factors should be considered when transferring equipment from one vessel to another?
A floating production storage and offloading (FPSO) vessel is turret moored and rotates around the turret – what effect might this have?
How do you confirm all items are secured correctly? What procedures do you follow when performing lifts?
What is the regular preventative maintenance regime for equipment you use?
How do you verify maintenance is up to date? What should you do if it’s not?
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A water injection pump (WIP) was being transferred from floating production storage and offloading (FPSO) vessel to a marine supply vessel (MSV). While being transferred the container started swinging and the WIP broke free and fell into the ocean.