Method for realizing maintenance operations i.e. replacement of heavier parts, of floating wind turbine device of off-shore wind energy production system, involves positioning floating wind turbine device on maintenance device

摘要

The method involves disconnecting a sinkable float (20) of anchor line systems (3a, 3b, 3c) and an electrical cable (40). A floating wind turbine device (1) is transferred from a production site to a maintenance device (5) by towing. The turbine device is positioned on the maintenance device, so that the turbine device is supported by the maintenance device. The maintenance device is fixed at the bottom (F) of a sub-marine. The turbine device is positioned on a lifting system (6) of the maintenance device. The turbine device is positioned above a movable immersed support (61). An independent claim is also included for a system for producing off-shore wind energy.