Wave Induced Dynamics of Offshore Heavy Lift Cranes on Jack-Ups: Analysis of the annual probability of failure of the crane in normal operation

Due to the increasing size of offshore wind turbines, the jack-up vessels and cranes installing them need to increase in size. The increase in length of the crane boom results in an increase of the dynamic response of the crane. This increase in response results in higher loads in the crane. The magnitude of the higher loads are unknown and not...

Earthquakes and offshore wind turbine installation;: A review and analysis of mitigation measures for cranes on jackups

Due to a high demand for offshore wind energy the industry is expanding to evermore challenging locations such as seismic prone areas. The corresponding seismic shocks and vibrations can be transmitted to jack‐up vessels and their cranes used for the installation of these offshore wind turbines. Since a potential collapse due to seismic activity...

Developing a method to assess the workability of an offshore heavy lifting operation

This master thesis describes a method to determine the workability of an offshore heavy lift operation. By creating wave realisations based on and statistically equivalent to measured ocean weather data, a quick assessment of the risk of failure can be achieved.

Combinatorial optimisation methods for wind farm installation scheduling: Optimisation in crane actions and installation ship routing

The offshore wind industry is rapidly growing, and so is the competition in this market. Normally, offshore installation companies receive a subsidy for building offshore wind farms, but due to multiple companies bidding to install for lower and lower subsidies, the point where wind farms are installed without subsidy has been reached. Therefore...

Optimizing Workability of a Motion Compensated Crane by Studying Residual Motion Behaviour