HOW WE PLAN TO EXTRACT RESOURCES AT SOLWARA 1
The Offshore Production System comprises three main components:
Riser and Lifting System (RALS)
The RALS comprises a large pump and rigid riser pipe hanging from a vessel which delivers the slurry to the surface. The pump hangs from a solid vertical (riser) pipe suspended beneath the support vessel. The pipe is deployed to the seabed by a derrick and draw works system on board the vessel.
On deck of the production support vessel, the slurry is dewatered. The dewatered solid material is discharged to a transportation barge moored alongside. Used seawater is pumped back to the seafloor through the riser pipes and providing hydraulic power to operate the RALS pump. Discharge of the return water at the seafloor will avoid impacts to the warm surface seawaters, minimizing environmental impact of the operation.
The transportation barges haul the material 50 kms to a stockpile location in the Port of Rabaul.
For more information on the production plan and operations, see the Project Definition and Cost Study: http://www.nautilusminerals.com/i/pdf/NAT005_Solwara_1_Offshore_Production_System_Definition_and_Cost_Study_Rev_3_21_June2010.pdf