OBJECTIVES To investigate cancer risk, particularly oesophageal cancer, among male upstream petroleum workers offshore potentially exposed to various carcinogenic agents. METHODS Using the Norwegian Registry of Employers and Employees, 24 765 male offshore workers registered from 1981 to 2003 was compared with 283 002 male referents from the general working population matched by age and commu...

Even though advanced power generation systems offer higher efficiencies than simpler gas turbines, severe area and weight restrictions keep on impeding their widespread implementation in offshore petroleum industry. If those could be resolved, the performance of utilities platforms may drastically enhanced. In order to overcome these practical limitations, installation a hub is proposed central...

Understanding why individuals delay dispersal and become subordinates within a group is central to studying the evolution of sociality. Hypotheses predict that dispersal decisions are influenced by costs of extra-territorial prospecting that are often required to find a breeding vacancy. Little is known about such costs, partly because it is complicated to demonstrate them empirically. For exam...

An overview of offshore wind turbine (OWT) foundations is presented, focusing primarily on the monopile foundation. The uncertainty in offshore soil conditions as well as random wind and wave loading is currently treated with a deterministic design procedure, though some standards allow engineers to use a probability-based approach. Laterally loaded monopile foundations are typically designed u...

Variability in extreme loads is greater in areas in which hurricanes or tropical cyclones are likely. Therefore, it is expected that design standards for offshore structures in such areas should prescribe different load amplification factors if a uniform structural reliability is to be achieved at all locations. In this paper we examine and evaluate the adaptation of methods within the American...

Adhesives, especially epoxies, are widely used as joints, repairs and corrosion protection in the petroleum onshore and offshore industry. Performance temperature is a key factor for such material. Mainly they are designed by the thermal properties but when they are in real service operation the behavior changes drastically. In this work, three different epoxy adhesives used in the offshore ind...