This paper describes a group model building activity designed to elicit the potential effects a projected multi-use deep water offshore platform may have on its local environment, including ecological and socio-economic issues. As such a platform is proposed for construction around the island of Hsiao-Liu-Chiu, Taiwan, we organized several meetings with the local stakeholders and structured the...

The current key challenge in the floating offshore wind turbine industry and research is on designing economic floating systems that can compete with fixed-bottom offshore turbines in terms of levelized cost of energy. The preliminary platform design, as well as early experimental design assessments, are critical elements in the overall design process. In this contribution, a brief review of cu...

many of the oil and gas platforms off california harbor high densities of young-ofthe-year (YoY) fishes, primarily rockfishes (genus Sebastes). one decommissioning option for these platforms is “topping,” cutting the structure some distance below the water line and leaving the rest of the jacket in place. Questions have arisen regarding how this option would affect the nursery function of the r...

In recent years, the use of offshore wind turbines has been considered on the agenda of the countries which have a significant maritime boundary due to more speed and stability of wind at sea. The aim of this study is to investigate the effect of wind turbulence on the aero-hydrodynamic behavior of offshore wind turbines with a monopile platform. Since in the sea, the wind turbine structures ar...

When a jack-up installed at a clay location and then leaves; it can create several meter deep footprints. In case of soft clay, the spudcan may have actually penetrated much deeper than the observed footprints. When the penetrated spudcan is pulled out, much of the soft remolded clay will flow around it and go back into the hole. This event, leaving a deep region of disturbed soil. The disturbe...

Abstrac t —To investigate the possibility that oil and gas platforms may reduce recruitment of rockfishes (Sebastes spp.) to natural habitat, we simulated drift pathways (termed “trajectories” in our model) from an existing oil platform to nearshore habitat using current measurements from high-frequency (HF) radars. The trajectories originated at Platform Irene, located west of Point Conception...

Selain terjadi di kota-kota besar, subsidence juga bisa sekitar daerah eksploitasi minyak dan gas bumi baik onshore maupun offshore. Indikasi penurunan tanah dapat dilihat dari terjadinya anjungan lower deck yang semakin tenggelam secara fisik. Terjadinya menyebabkan kegagalan struktur. Apabila kegagalan, struktur mengalami berbagai kemungkinan konsekuensi menimbulkan bahaya hingga kerugian. Me...