2007, CT Offshore, Kentish Flats, Post Lay Inspection of HVAC Cable

CT Offshore was awarded the maintenance survey contract requiring Post Installation Maintenance Survey of the 33 kV power cable between the offshore WTG foundations and the land fall cables running ashore. It was agreed to commence the survey at the identified critical sections – and evaluate along the operation taking the weather and progress in to consideration. The purpose of the survey was to determine the degree of protection provided to the cables based on the burial depth into the seabed, and the survey data from the survey completed summer 2006. In other words there are now to independent survey to clarify the seabed cover over the cables along the cable route in all positions along the route where a survey has been completed. The correlation between the two survey has indicated some cables which remain at risk, and others which has gained burial as and outcome of unexpected sediment movement.