The installation phase is a critical stage during the lifecycle of an offshore wind turbine. This paper presents state-of-the-art review technical aspects turbine installation. An overview first presented introducing classification turbines, vessels, rules and regulations, numerical modelling tools. Then, various methods concepts for bottom-fixed floating turbines are critically discussed, foll...

The operation and in particular the construction of offshore wind converters induce considerable underwater noise emissions. It is assumed that small whales and seals can be affected by noise from machines and vessels, piling and installation of the wind turbines. Piling, in particular using hydraulic hammers creates impulsive noise with considerable high energy levels. Currently, only little k...

This paper exemplifies how to make aggregated descriptions or requirements of work processes to serve as references or resources for future situated actions in the operations of a new oil installation It describes a joint organisational and IT-development process of a CSCW-application that supports personel in their daily preparations for operations. The paper discusses how the organisational m...

Economical design with sufficient fracture resistance is of high importance in any offshore pipeline projects. Using an Engineering Critical Assessment (ECA), alternate acceptance criteria for pipeline girth weld inspection can significantly reduce the cost of constructing of offshore oil and gas pipeline by minimizing unnecessary repairs. Offshore pipelines consist of short pipeline segments c...

In this paper, the authors propose offshore installation time estimation model for floating wind turbines, hereinafter FOWTs, in order to analyze efficiency each process. The total as sum of operational (1) pre-anchoring, (2) ultimate holding capacity verification, (3) towing, (4) mooring, and (5) other processes is defined. This study introduces “installation per mooring line” benchmark measur...

Abstract. Detailed simulation of wind generation as driven by weather patterns is required to quantify the impact on electrical grid power fluctuations in offshore fleets. This paper focuses studying high-installation-density fleets since they present a growing challenge operation and planning systems Europe. The Belgian fleet studied because it has highest density installation Europe 2020, new...