ReDAPT project results lead to tidal turbine standards

DNV GL, has issued a new set of standards for the design and operation of tidal turbines based on results from the Reliable Data Acquisition Platform for Tidal (ReDAPT) project in the Energy Technologies Institute’s (ETI) marine technology program.

According to ETI’s press release, DVN GL used results from the ReDAPT tests to establish new certification standards that could apply to all underwater tidal turbines. ETI also thinks the results will benefit developers, investors, insurers and regulatory authorities.

DNV GL — Det Norske Veritas of Norway and Germanischer Lloyd based in Germany — is the world’s largest technical consultancy to onshore and offshore wind, wave, tidal, and solar industries, as well as the global oil and gas industry. Published data indicate about 65% of the world’s offshore pipelines are designed and installed to DNV GL’s technical standards.

ETI is a public-private partnership between global energy and engineering companies and the UK government.

ETI said it invested US$18.2 million (£12.6 million) in the project that was delivered by a consortium of GE Renewable Energy, E.ON, EDF, DNV GL, Plymouth Marine Laboratory (PML), EMEC and the University of Edinburgh. The ReDAPT project gathered data from testing a GE 1 MW buoyant tidal generator deployed in January 2013 at the European Marine Energy Centre (EMEC) in Orkney.

The release also said the new service specification provides a clear scope for type-certification, which is key to opening up commercial opportunities when moving from initial prototypes to volume production for tidal turbine developers.

The standard applies to tidal turbines that are fixed to the seabed or floating and covers the structures, machinery, safety, controls and instrumentation and electrical systems.

Claudio Bittencourt, Business Development director for wave and tidal in DNV GL, said, “The need for a standard to manage risk and support commercialization was identified in the very early stages of the tidal turbine industry development. Through the foresight of the ETI and their commitment to support this through the ReDAPT project DNV GL was able to rapidly develop a tidal turbine service specification and standard built on a solid technical foundation.”

The ReDAPT project generated more than 1.2 GWh in testing, achieved through months of continuous operation in a real tidal environment. Test results offer support that tidal turbines can be successfully deployed and retrieved in challenging marine conditions.

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Gregory B. Poindexter formerly was an associate editor for

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