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Glossary

 

Avifauna : Part of the fauna of a place consisting of birds.

Benthic : An organism of an aquatic ecosystem living in contact with or in close proximity to the ground. Benthic stands are called "benthos".

Blackout : Risk of a generalized power outage due to the mismatch between supply and demand on the power grid.

Consortium : Group of companies formed for the purpose of carrying out a financial or economic operation.

Decommissioning: The final stage of a project that consists of dismantling the wind turbine, removing project-related equipment from the site and returning the land to its original use or to another collectively approved use.

Energy dependence or independence: Ratio of primary energy production to primary energy consumption. An energy-dependent territory is obliged to import energy to meet its needs.

Sustainable development : A mode of economic development that seeks to reconcile economic and social progress with the preservation of the environment.

Fossil fuels : The decomposition of organic matter, trapped in geological formations, over a process that lasts tens of millions of years. They are not so-called "renewable" energies, because it takes a very long time to replenish their stocks. (e.g. oil, natural gas and coal).

Marine renewable energy: All the technologies enabling the exploitation of natural energy flows provided by the seas and oceans (currents, tides, thermal energy).

Wind turbine: A device designed to convert the energy of the wind into electricity. Wind turbines produce electricity from renewable sources. They can be installed on land or at sea.

Floating foundation: In the future, for wind farms in deep or even very deep water (exceeding 60 meters deep, unlike the installed wind turbine), the principle of this foundation is based on the buoyancy and stability of the structure (maintained by anchoring lines) so that it resists oscillations.

Gravity foundation: Concrete structure laid on the seabed.

Jacket foundation: Wire mesh fixed to the seabed by several piles.

Single pile foundation: Tubular metal pile driven into the seabed.

Tripod foundation: Tubular structure fixed to the seabed by three piles.

Greenhouse gases (GHGs) : Gaseous components that absorb infrared radiation emitted from the Earth's surface, contributing to the greenhouse effect. The increase in their concentration in the Earth's atmosphere is a suspected cause of recent global warming.

Industry : All the complementary upstream and downstream industries that contribute to the manufacture of a final product.

Client: legal entity on whose behalf a work is carried out, which uses or exploits it. It ensures the design and feasibility of the project, defines the implementation process and finances it. Ailes Marines is the owner of the offshore wind project in the Bay of Saint-Brieuc.

Mast: A component of the wind turbine that raises the blades to a suitable altitude where the wind speed is higher.

Hub: Also called "nose", the hub is usually a cast steel part. It supports the rotor blades and mounts on the gearbox input slow shaft. It is equipped with a regulation system that allows the pitch of the blades to be changed. The hub is designed to allow access to the technicians directly from the nacelle.

Nacelle: A component part of the wind turbine mounted at the top of the mast that supports the rotor, gearbox and generator.

Natura 2000: European network of natural or semi-natural sites of great heritage value because of the exceptional flora and fauna they contain, established by the "Habitat, Fauna and Flora Directive" of 21 May 1992.

Plus-Basses-Mers Astronomiques : The Plus-Basses-Mers Astronomiques (PBMA) level corresponds to the hydrographic chart datum, also called 0 Cote Marine (0 cm).

Fisheryresource: A living animal and plant resource in marine aquatic environments exploited by man (fishing, aquaculture).

Rotor: A component part of the wind turbine, it is the moving part of the turbine.

Watt: Basic unit for expressing electrical power. The watt-hour is the unit of energy produced or consumed during one hour.

 

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