EDITOR’S CHOICE NEWS PROTOTYPE CERTIFICATION OF TIDAL TURBINE D
NV GL, a major resource of independent energy experts
and certification body, has announced that it is supporting leading energy solutions and transport company Alstom, through the process of achieving Prototype Certification of its tidal turbine Oceade 18 - 1.4MW. Alstom has been selected to
supply four Oceade 18 – 1.4MW tidal turbines to one of the world’s first tidal stream arrays in the Raz Blanchard, France. The turbine design is claimed to be at the leading edge of advanced tidal technology, being an evolution of the 500kW and 1MW demonstrators tested at the
European Marine Energy Centre, Scotland. Both the 500kW and 1MW demonstrators completed DNV GL Design Assessment. DNV GL is using the industry recognised DNV-OSS-312 to certify the Oceade 18 - 1.4MW tidal turbine, with the first stage in the process involving a full risk assessment of the turbine and agreeing actions to mitigate the risk of failure. DNV GL will now work with
Alstom to review and approve design documents before heading towards the fabrication stage, including manufacturing quality and equipment testing and surveillance of the installation
and commissioning. Final Prototype Certification of the turbine will follow the successful close out of the actions agreed during the Statement of Feasibility stage. Rob Stevenson, Vice-President, Ocean Energy, Alstom commented: “We look forward to continuing our journey with DNV GL to gain full Certification for the Oceade 18 - 1.4 MW” Claudio Bittencourt, Business
Development Director, DNV GL commented: “DNV GL has worked with Alstom for many years and is now certifying the Oceade 18 - 1.4MW tidal turbine.
www.dnvgl.com
NEW LED LIGHT TORCH RANGE
MAJOR TESTING OF WIND TURBINE PILES COMPLETED
Dong Energy and ESG have recently completed comprehensive pile testing campaigns. Initial results show great cost reduction potential for the offshore wind industry. The two companies have tested 28 piles on two different onshore sites in order to assist the development of new design methods for offshore wind farms. The testing has been undertaken by the joint industry project PISA and was performed to assess and validate a new design method developed by the PISA academic working group led by Oxford University and including Imperial College London and University College Dublin. The academic working group supervised the testing on site, as each of the 28 piles were pulled sideways into the soil until failure. Alastair Muir Wood, Lead Geotechnical Engineer Dong Energy and Technical Manager for the PISA Project, said: “We’re very pleased with the test results, which confirm that traditional design methods in these soils are very conservative. The results indicate that in these site conditions there may be opportunities for savings identified by reducing the quantity of steel in the foundation. In other words, there’s a savings potential that will contribute to reducing the cost of electricity.” The testing took place in Cowden, England and in Dunkirk, France. The clay till site in Cowden and the
dense sand site in Dunkirk represent typical surface soil conditions found in much of the North Sea. Furthermore, both sites have previously been used for pile testing activities, mostly targeting oil and gas engineering, meaning that a rich amount of field and laboratory soil data is already available. Bladt and Dansteel supplied piles of three different diameters for the tests; the piles with a diameter of 2
metres are some of the largest ever tested. During testing, other instrumentation was used including fibre optic strain gauges installed by Marmota Industries. In total, 28 tests were conducted primarily investigating the static monotonic but also the response under cyclic lateral loading.
DONG Energy
www.dongenergy.co.uk
Schneider Electric has recently launched its Thorsman Handheld LED Site Light torch range. The portable torch, which uses the latest Chips on Board (COB) technology, marks an evolution of the company’s existing Goliath range, providing a powerful and uniform illumination on the go. The new LED Site Lighting range allows users to create a comfortable and safe work environment through the use of this hand held torch, which features high lumen output and extremely long lifetime allowing electricians and workmen to ensure that they are working in an ideally lit location. The Thorsman Handheld charging system offers additional convenience as it can be charged by USB in a van or car as well as a traditional power point, enabling a more mobile workforce. Building on the existing technology of the company’s Goliath range, the Thorsman Handheld caters for the entire market, with benefits including: Powerful illumination (1.3W LED ≈ 10W halogen) meaning working in poor lighting is a thing of the past.
www.schneider-electric.com/uk
The University of Malta has announced that it has successfully brought wind lidar technology to the country, with funding from an EU Project. Claimed as the industry’s single most validated wind lidar, ZephIR 300, will be utilised by the University to assist with Degree program course delivery and further research within the academic communities based at the University. Furthermore, the high-resolution 50Hz wind data will aid in the prospecting of coastal wind resources.
www.zephirlidar.com
FAST CONSTRUCTION OF BIOGAS PLANTS MORE IMPORT THAN EVER
On July 21, 2015 the Department of Energy and Climate Change (DECC) announced a consultation period on proposed changes to the feed-In tariff accreditation. For the biogas industry this is likely to mean the abolition of pre-accreditation. This makes it possible in the future to lower the feed-in tariff (FiT) during the development phase of anaerobic digestion projects up to 5megawatts capacity. With the announced changes, the fast realisation of projects currently under development is critical. Only when projects are implemented quickly, can you then calculate the quarterly digressions of the feed-in tariff. “The termination of pre-accreditation will have a devastating effect on investors and not
/ ENERGYMANAGEMENT
least fatal consequences for the achievement of climate change goals” said Jens Albartus, the Managing Director of the biogas plant manufacturer Weltec Biopower (UK). According to Mr Albartus, the complicating factor is that the abolition of the pre-accreditation is to be adopted in September and thus an extremely short time frame. The announcement to subject a further revision of the feed-in tariffs this year is very counterproductive”, said Mr Albartus. Weltec Biopower advises it can help those affected by the changes publicised by DECC, and has an encouraging signal to the biogas industry as an answer to the announcement.
www.weltec-biopower.de
ENERGY MANAGEMENT | AUTUMN 2015 5
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