The foundation of an offshore installation is designed to resist the static and dynamic loads it is subjected to during its lifetime. The design codes specify combinations of load factor on the static load, load factor on the dynamic load, and resistance factor on the soil resistance, with reference to the ‘characteristic’ loads acting on the foundation and the ‘characteristic’ foundation capac...

To meet the requirements of riser safety monitoring in offshore oil fields, a new Fiber Bragg Grating (FBG)-based bundle-structure riser stress monitoring sensor has been developed. In cooperation with many departments, a 49-day marine test in water depths of 1365 m and 1252 m was completed on the "HYSY-981" ocean oil drilling platform. No welding and pasting were used when the sensor was insta...

Wind energy, commonly recognized to be a clean and environmentally friendly renewable energy resource that can reduce our dependency on fossil fuels, has developed rapidly in recent years. Its mature technology and comparatively low cost make it promising as an important primary energy source in the future. However, there are potential environmental impacts due to the installation and operation...

An actual growth rate greater than 30% indicates that offshore wind is a reasonable alternative to other energy sources. The industry today is faced with the challenge of becoming competitive and thus significantly reduce the cost of electricity from offshore wind. This situation implies that the evaluation of costs incurred during development, installation and operation is one of the most pres...

The paper provides a critical appraisal of the events surrounding the unexpected settlement of large-diameter monopile foundations for offshore wind energy converters, and will detail experimentation that is to be undertaken to determine the extent of the wear failure mode in such structures. The potential for wear deterioration at the grout-steel interface has been caused by the lack of axial ...

Pile driveability analyses for offshore platforms require a unique set of criteria, which may not normally be associated with other pile foundation installations. The selected hammers, pile makeup details and soil profile must be carefully reviewed, as these factors will determine if pile installations will be successful. The most important of the variables to establish is the expected Soil Res...

Offshore platform installation is associated with several inherent risks arising from majorcritical safety challenges such as fires, explosions, blowouts, falling objects, earthquake, extreme weather,and impact from moving objects such as helicopters or ships. These critical problems are due largely to designerrors or inadequacies, and poor maintenance. The safety challenges highlig...

The construction of offshore wind farms requires solving more and complex logistical problems due to the increasing sizes turbines changing environments. In particular, installation substructures attention their significant impact on capital expenditures limited literature guidelines available. this paper, we develop a decision support tool consisting discrete-event simulation that allows for c...

An approach is developed for floating wind farm installation by creating a model that allows the planning of main logistics and aspects farm. The method aims to preserve coherency between logistic methods project performance, as complex problem, due number components impose specific constraints in areas such transportation manufacturing. tool based on knowledge about how use various approaches ...