Carnegie Wave Energy Limited reported this morning that the first of its CETO 5 Units has been retrieved after over 4,000 hours of operation and over 8,500 across all three Units.
The retrieval was completed on the first attempt by using its hydraulic “quick connect” technology to disconnect the Unit from the seabed foundation.
The disconnection was then followed in succession by the de-ballasting of the Buoyant Actuator, floating up of the Pump assembly on site and then towing the complete Unit back to the Australian Marine Complex (AMC) in Henderson. It has now been lifted out of the water and returned to Carnegie’s staging area within the AMC to begin the onshore inspection and overhaul process.
The Unit will be completely stripped down, to allow for non-destructive testing, and in depth inspection. It will then be overhauled as required and re-assembled, prior to beginning onshore re-testing of the CETO Unit in advance of offshore re-installation.
After having installed all three CETO 5 Units on the first attempt through November to March, the goal is to re-install Unit 1 and progressively retrieve Units 2 and 3 during winter, when installation and retrieval conditions are more challenging. Carnegie aims to have a CETO 5 Unit continuously operate throughout winter.
The Project has now achieved more 8,500 continuous operational hours during which the units have experienced a range of sea states, including waves up to 5.7m in height.
Image: Carnegie