Carnegie: Subsea Pipelines and Interconnections Arrive in Australia

Carnegie Wave Energy Limited provides an update on the pipeline installation work package of its Perth Wave Energy Project in Western Australia.

Carnegie advised that pipeline installation works have now commenced. The first stage of installation is the shoreline conduit crossing which involves the installation of a 400mm diameter high density polyethylene (HDPE) pipe which will hold the high pressure delivery and return pipes that transmit the high pressure water between the offshore and onshore project sites, and a 110mm HDPE pipe which will hold the communications cable and desalination outfall pipe.

Carnegie can also advise that the two main subsea pipelines, and associated end fittings and interconnections have now arrived in Australia from the US ahead of swaging and testing before delivery to offshore installer, Total AMS Pty Ltd, for mobilisation ahead of installation.

The Perth Wave Energy Project utilises subsea high pressure pipelines for the transmission of high pressure water. The pressurised water is pumped by the CETO units to the onshore power station and desalination plant, which then returns the low pressure water back offshore to the CETO units to be re-pressurised.

Carnegie placed an order for the manufacture and supply of 6km of flexible steel reinforced pipe and associated end fittings and interconnections in July 2013 with FlexSteel Pipeline Technologies (FlexSteel) based in Houston, Texas. FlexSteel is an experienced piping manufacturer and supplier, with over 20 years’ experience, specialising in flexible steel reinforced pipe for demanding offshore environments. In December 2013, Carnegie announced the award of the pipeline and shore crossing conduit installation contract to Total AMS Pty Ltd (TAMS).