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INDUSTRY SHOWCASE


• Professional project management


• State of the art processing machinery


• Wide area plates & many thickness options


Brown McFarlane is one of the world’s leading specialist steel plate distributors, processors and traders.


• Stainless Steel, Duplex, Super Duplex & High Grade Carbon plates


• Accredited to ISO 9001, OHSAS 18001, ISO 14001 & EN 1090


Our focus is on the supply of highly specified, quality steel plate products. We’re proud to hold one of the most diverse stock ranges available anywhere in the world running from carbon manganese through to super duplex stainless steel. Whatever your ex-stock steel plate requirement, the chances are that we can offer a speedy supply solution.


www.brownmac.com +44 (0)1782 289 909 DECOMMISSIONING SEAGEN


SeaGen is a landmark 1.2MW tidal turbine installed in Strangford Lough, Northern Ireland in 2008 by Marine Current Turbines (MCT) to study tidal energy technology through the investigation of engineering, management systems, and environmental impacts


Since 2015, the project has been owned by Atlantis Resources Limited.


The SeaGen device is secured to the seabed via a quadropod foundation comprising drilled 1m diameter, 14m long pin piles. SeaGen is now


considered to have served its R&D purpose and Atlantis has decided to decommission the device to focus on development of the next generation of tidal turbines. SeaGen will be the first full-scale turbine development to be decommissioned.


NEW EIA Following a review of the pre- construction Environmental Impact Assessment (EIA) and updated methods for decommissioning it was agreed, via consultation with stakeholders, that a new EIA would be required. MarineSpace (supported by SMRU Ltd) were commissioned by Atlantis to prepare this new EIA. The main areas of concern for regulators and advisers were: >> Loss of designated seabed habitat (Strangford Lough SAC and MCZ) via use of jack-up or moored barges;


>> Spread of non-native invasive species Didemnum vexillum through cold-cutting of the legs;


Image courtesy of Atlantis Resources Ltd.


4 www.wavetidalenergynetwork.co.uk


>> Noise and vibration disturbance to basking shark via use of jack-up or moored barge or cold-cutting techniques; and


Image courtesy of Atlantis Resources Ltd.


>> Underwater noise disturbance to marine mammals via use of cold-cutting techniques.


TIMING IS CRUCIAL The key mitigation measure to be employed to minimise any environmental risk is the timing of decommissioning operations. By undertaking work between November and April, the common seal pupping season would be avoided, abundance of marine mammals would be low and there would be no larval recruitment of D. vexillum.


Based on the EIA undertaken by MarineSpace, a draft Marine Construction Licence is under review and it is expected that the SeaGen device will be decommissioned in the winter 2017/18 period.


MarineSpace Ltd


www.safetyboatservices.co.uk Email: safetyboatservices@gmail.com


Daniel Ross 07539734927


MARINESPACE WEBSITE


WEBSITE SMRU


ATLANTIS WEBSITE


www.wavetidalenergynetwork.co.uk 5


Specialists in supplying safety/work boats and marine plant for marine construction projects, vessels for near shore and offshore surveys and Class A Guard Vessel duties.


With 25 years in Marine Construction we strive to offer the best service at the keenest price and are one of the leading specialist in near shore and intertidal solutions in the country.


• Marine Construction & Marine Plant Hire • • • •


Intertidal and flood defence


Custom designed Amphibious Vehicles Job Specific Vessel providers


Irrigation and Environmental Works


SCAN/CLICK


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