The research focused on how differences in seabed conditions can affect scour in the undeveloped offshore environment and how the introduction of structures and cable-installation disturbance can further modify (increase) the scour susceptibility of the seafloor.
This was accomplished via four phases:
Organize and hold a workshop to identify challenges, developmental needs, and areas of research necessary to advance the design, processes, metallurgy, and inspection/repair of underwater welding applications; with specific attention to status of development and availability of wet-welding consumables and services; current applications and practices for underwater welding and inspection; limitations that hinder underwater applications; new and advanced technologies, and collaboration of international partners including manufactures, suppliers, repair and inspection service companies, standa
This effort was primarily an analytical study of resonance coincidence and its impact on the structural design characteristics of offshore wind turbines. It tapped classical methods of fluid dynamics, structural dynamics, and mechanics of materials to assess methods of preventing resonance coincidence and minimizing its consequences. It also assessed the accelerated fatigue that would result from resonance coincidence, using first order estimates of the load encountered by the wind turbine. It used data and information on offshore turbines available in the open literature.
The objective of this project was to develop a supplement to the existing offshore wind turbine facility inspection guidelines (TAR project 627) that includes recommended inspection techniques, acceptable technologies from a safety and effectiveness standpoint, and recommended follow-up activities in the event of identified anomalies.
The scope of work was broken up into the following tasks:
The purpose of this project was to establish a methodological framework for estimating the installation cost of offshore wind energy devices in the US OCS and providing removal cost estimates.
The scope of work was broken up into the following tasks:
Task 1. Review and synthesize the installation methods and costs of current and proposed offshore wind energy projects, internationally and domestically, using both primary and secondary data sources including interviews with project personnel;
The contractor performed a technical review and cost assessment applicable to Pacific OCS Region Offshore Facility Decommissioning. The specific tasks include: (1) review and update the decommissioning scenarios for OCS platforms, (2) review and update the engineering cost assumptions and methodologies, and (3) review and update the costs for each phase of the decommissioning process.
The objectives of this research was to catalogue for archival purposes details about platform and pipeline damage and destruction caused by hurricanes Gustav and Ike. The work will also evaluated technically what went right and what went wrong in order to identify issues that can be changed in design codes so these problems do not occur again on new structures (platforms and pipelines) or to identify issues with existing structures that can be remedied prior to future hurricanes.
This study provided a review of the state of the art practices as of 2009 in the removal and disposal of Gulf of Mexico (GOM) U.S. Outer Continental Shelf (OCS) oil and gas facilities in water depths greater than 400 feet.
The efforts in this project are focused specifically on analyzing the pertinent noise transmission and radiation mechanisms associated with driving large monopile foundations. Further, the project will identify specific mitigation concepts appropriate to those mechanisms and assess the potential performance of those approaches with the context of achievable engineering design.
The project addressed three primary topics via a series of tasks:
Topic 1 - Damage and Critical Analysis of Accidents:
