INDUSTRY NEWS
JONES BROS DEFIES RECESSION
WARNING LIGHTS FOR FIRST SEMI- SUBMERSIBLEWIND TURBINE
Tideland Signal has supplied Statoil ASA with a comprehensive package of aids to navigation to warn shipping in the vicinity of its revolutionary “Hywind” floating wind turbine.
Hywind, the world's first full-scale, floating wind turbine designed for deployment offshore, is part of a 400 million NOK project. It was assembled at Åmøyfjorden near Stavanger and is located 10 km offshore from Karmøy. The two-year test programme, which feeds electricity into Norway's national grid via a submarine power line, is designed to prove the concept of capturing wind energy in deep-water environments and to test how wind and waves affect the structure.
The floater, built by Technip, consists of a steel cylinder filled with a ballast of water and rocks. It extends 100 metres beneath the sea’s surface and is attached to the seabed by a three-point mooring spread.
It features a 2.3MW Siemens turbine with three blades of 80 metre diameter, mounted on a spar buoy. It can be located in waters ranging from 120 to 700 metres depth in order to take advantage of optimum wind and environmental conditions, also obviating the need for foundations, which are extremely expensive at depths greater than 30-50 m.
The structure is based on the proven technology of a concrete semi- submersible, familiar in offshore oil and gas installations around the world. The tower, rising to 65 metres above sea level, is marked by three Tideland MLED-155 Syncrolan, single-lift light stations, each with a range of 5 NM. They are mounted on stainless steel pedestals at 120° intervals around the circumference of the tower at a height of 15 metres and are quipped with 48- hour battery back-up.
Tideland’s MLED-155 is designed for use with an external power source, in this case solar, and offers minimal maintenance requirements and a service life of seven years on station in the most demanding environments. Long-life LEDs and high-integrity electronics housed in a tough UV-resistant polycarbonate enclosure ensure that lantern will not need to be opened during its service life and, when buoy- mounted, will even withstand being submerged in salt water. In the Hywind application, it is fitted with a yellow MaxiHalo 60 multi-code LED flasher, sunswitch and on-board GPS to synchronize the flash code.
Tideland Signal Limited
www.tidelandsignal.com
Managing director Huw Jones said: “We had another year of further solid progress, despite the economic recession and a very competitive market. A big area of expansion for us was the energy sector, where we worked for both renewables and conventional energy producers.”
Jones Bros’ most significant project last year was a £19m contract to build the infrastructure for a 60-turbine wind farm in East Lothian for Fred Olsen Renewables. Other wind farm work included completion of Carno 2, mid Wales, and commencement of Tullo wind farm near Aberdeen.
Jones Bros
www.jones-bros.com
NORTH Wales civil engineering firm Jones Bros expanded by almost one quarter last year, in defiance of the recession.
Wind Energy NETWORK
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