Filter By

Grande Côte Project Surge Bin, Spiral Concentrator and Tails Densification Module Stability Assessments

BMT provides marine engineering services to the world's water-going mining operations.


BMT was contracted in 2012 to conduct an analysis of stability for the Surge Bin Barge, Spiral Concentrator Barge and Tails Densification Module, all of which form part of the processing plant for the Grande Côte Project.

The Grande Côte Project is located in a mobile Aeolian sand dune system which begins 50 kilometres north of Dakar, and extends 100 kilometres further north along the coastline.

Mining will be carried out by dredging a continuous canal through the sand dune system at a rate of approximately 55 million tonnes per annum over a 25 year mine life.

Sand from a dredge is sent to the Surge Bin and Spiral Concentrator plant before the resulting heavy mineral concentrate is stockpiled adjacent to the mine pond and the tailings are discharged ashore.

BMT Approach

The project involved assessing the equilibrium hydrostatics and stability characteristics of all three barges.

The stability of the floating plant is integral of the ability of the production plant system to operate efficiently and safely.

Our expert team of naval architects utilised the Maxsurf suite of software for barge analysis.

Maxsurf Stability allowed for the detailed analysis of vessel stability in a range of loading conditions.

A stability assessment was undertaken on all of the barges to determine how they will behave if forced to heel for any reason.

Outcome and Benefits

The analysis of equilibrium hydrostatics provided detailed information about how the barges would act under a range of typical loading conditions including lightship, dry, operating, maintenance and sanded load case scenarios.

BMT were able to comprehensively assess the static attributes of the barges with regard to their trim, heel, drafts and freeboard.

BMT were able to successfully complete a stability review of all three of these barges for a range of intact and damage conditions which are likely to occur in their normal operation, thus allowing for their efficient and safe use moving forward.