The Triton Knoll Offshore Wind Farm Order 2013

Further offshore design requirements

5.—(1) No steel monopile foundation forming part of the authorised scheme shall—

(a) in the case of a steel monopile foundation have a diameter of more than 7 metres for use with meteorological stations and for use in all other instances a diameter of more than 8.5 metres; and

(b) in the case of a concrete monopile foundation have a diameter of more than 8.5 metres for use with meteorological stations and for use in all other instances a diameter of more than 10.5 metres.

(2) No gravity base foundation forming part of the authorised scheme shall have—

(a) for use with large HVDC substations or combined substations a length at the level of the seabed of more than 100 metres, a width of 15 metres or a height of more than 15 metres; or for use in all other instances, a diameter at the level of the seabed of more than 45 metres;

(b) a base height, where there is a flat base, of more than 7 metres above the level of the seabed;

(c) a cone/column intersect which is higher than 32 metres above the top of the base;

(d) a cone diameter of more than 45 metres at its base;

(e) a column diameter, where there is a flat or conical base, of more than 10 metres.

(3) No jacket foundation forming part of the authorised scheme shall have—

(a) for use with wind turbine generators a width spacing between each leg at the level of the seabed of more than 30 metres and more than 4 legs;

(b) a pile diameter of more than 3 metres;

(c) more than one pile per leg or more than one suction can per leg;

(d) for use with offshore substations, combined substations or large HVDC substations more than 8 legs; and for use with combined substations more than 16 legs;

(e) a suction can which is more than 14 metres in diameter.

(4) No suction bucket monopod foundation forming part of the authorised scheme shall have—

(a) a diameter at the level of the seabed of more than 25 metres;

(b) a column diameter of more than 10.5 metres.

(5) No tripod foundation forming part of the authorised development shall have—

(a) more than three legs;

(b) a brace diameter of more than 5.5 metres;

(c) a pile diameter of more than 3 metres;

(d) more than one pile per leg;

(e) a column diameter of more than 8 metres;

(f) a suction can which is more than 14 metres in diameter.