The Triton Knoll Offshore Wind Farm Order 2013

Further offshore design requirements

7.—(1) No monopile foundation forming part of the authorised development 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 of diameter of more than 10.5 metres.

(2) No gravity base foundation forming part of the authorised development 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 development 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 development 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.