ICE congratulates NTOC for pioneering the vibratory driving method for the installation of wind turbine foundations in China. Since 2010 NTOC has built the foundations of 48 wind turbines in Jiangsu Province’s Rudong Tidal Zone firmly establishing itself as a major player in the offshore wind turbine installation field. 
 
NTOC purchased two 200M vibratory hammers in 2010 and has used these to drive over 250 piles.

The 200M is operated from the Hayang No. 36 vessel which has a 350t lifting crane and a D250 diesel hammer. The majority of the turbines had five pile foundations; NTOC also installed a number of six pile jacket foundations. The diameter of the piles varied from 1.4-1.8m and had a length ranging from 45-60 meters. The 200M typically drove the first 10-20m of the pile allowing for accurate positioning and controlled driving avoiding excessive hammering noise eliminating the risk of running piles and reducing the stresses on the pile that may cause pile fatigue by the D250 Diesel hammer that was used to drive the piles to final depth.

Over the last five years NTOC has built up a wealth of experience in the installation of offshore wind turbines and has reached very high efficiencies. We are excited to play a part in their success!