Abstract
Nova Innovation has produced this Construction Method Statement to describe the methods and techniques that will be employed to install, operate, reconfigure and decommission the 600 kW array of Nova M100 tidal turbines, including cables and offshore infrastructure, in the Bluemull Sound near Cullivoe in Shetland.
An existing offshore tidal array of three M100 turbines (T1, T2 and T3), known as the Shetland Tidal Array, will be expanded with the addition of three new M100D direct drive turbines (T4, T5 and T6), taking the total to six bottom-mounted, gravity-anchored, non-yawing horizontal axis turbines of 100 kW capacity. Each of the six tidal turbines comprises a cylindrical nacelle unit, rotor and tripod gravity base to secure it to the seabed. The design of the newest three turbines has evolved (see Figure 1 and details in 2.2). Associated infrastructure includes a subsea cable hub, inter-array cabling and export cables connecting the array to Cullivoe Pier.