TFN Scour Prevention System Selected for Elisa Project

Norfolk Marine’s TFN System will be installed as scour protection for the foundation of the 5MW Elisa prototype under construction in the Canary Islands.

The TFN system will be installed on the Turbine Foundation inshore in controlled port conditions complimenting the projects “Off Site Construction” technology.

Esteyco, leader of the developer’s consortium, commented, “TFNs have been chosen as scour protection for the project as they perfectly match with its core objective: minimising offshore tasks and the dependence on expensive and scarce offshore means. And pre-installing the TFNs in-harbour eliminates the traditional anti-scour offshore activity using rock armour”.

The TFN System offers a cost effective long term solution to scour around offshore structure foundations. The system is fabricated from recycled materials reducing the environment impact of offshore developments.

·         TFN’s trap sediment transported in or through scour holes resulting in elevated bed levels

·         TFN’s placed in an existing scour hole as a remedial measure are effective in resisting further dropping of bed levels at the base of Mono Pile Foundations.

·         TFN’s dramatically reduce the effects of secondary scour when compared to conventional scour prevention systems

·         TFN’s resist sinking from sucking scour in sandy seabed’s.

·         TFN’s resist the Lee Wake vortex effect found downstream of foundation piles.

·         TFN’s resist “roll away” which can result in rock armour moving away from the structure.

For more information on the TFN System please contact Johnny Gallagher at johnny@norfolkmarine.ie

or Bill Wilcox at bill@norfolkmarine.ie