The Collahuasi Copper Mine was developed in northern Chile and at the time was considered to be the third largest copper mine in the world.
The initial production was planned to be 1 Mt/y of copper concentrate, which is transported by slurry pipelines to the port. The facility can accommodate vessels up to 60,000 DWT.
Ausenco initially conducted a study related to the marine structures and the shiploader for Collahuasi. Subsequently, we were awarded an EPC contract for these structures and shiploader.
This work was expanded to provide a substation to provide all electrical services for the shiploader system including feed conveyors and auxiliaries. The substation was provided in a highly compressed construction schedule.
Rated 750 kVA at 3.3 kV, the substation is mounted on the shiploader pivot platform. The design was particularly challenging due to protection from wave action, moving shiploader equipment and unusual grounding requirements.
The substation was supplied as modular construction and incorporated high voltage switching, transformer, Motor Control Centre (MCC), Programmable Logic Controller (PLC) and fibre-optic communications.