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Moorings and Anchors

Effects of Damping Properties of Anchoring Systems, Tension Legs, and Risers on Fatigue, Longevity, and Life Extension Decisions

To study the effects of damping properties of anchoring systems, tension legs, and risers on fatigue, longevity, and life extension decisions. The study will include empirical evaluation and modeling for tthe effects of damping properties, incldueing potential reduction in fatigue among other effects.
The study will evaluate potential effects of damping properties and their direct implications for platform and riser life extensions and factors that could affect life extension determinations.

Total contract award, including options, is $324,867.00

TAP-730-Mooring Systems Integrity Management for Floating Structures

The study aims to determine how BSEE regulations for Mooring Integrity Management compare to other worldwide regulations, what gaps exist in the regulations, and what inspection techniques are currently available. The objective of this study is to improve BSEE and industry understanding of global mooring standards, inspection techniques, and risks.

TAP-661-Joint Industry Project (JIP) to Enhance Polyester Rope Stiffness Modeling, Testing, and Analysis

This JIP is initiated to collect and investigate results of past studies on fiber ropes, test procedures and data, code requirements, and fiber rope mooring analysis methods. The JIP will also conduct sensitivity analysis to identify important model and design parameters. Based on the results of the investigation, conservative and practical stiffness models, testing procedure, and mooring analysis method will be developed. The results from this JIP can be used in supporting fiber rope code developments and polyester mooring projects.

TAP-632-Evaluate New Materials for Deepwater Synthetic Mooring Systems

Specific objectives of this report were: Compare and contrast the risks and benefits of using stiffer synthetic fibers vs. polyester fibers for mooring rope design, manufacturing, installation and long-term operations over the last decade in the Gulf of Mexico.
By theoretical analysis, compare dynamic responses of typical floaters moored with polyester segments and with stiffer fiber segments.

TAP-629-Assess the Design and Inspection Criteria and Standards for Wave and Current Energy Generating Devices

The objective of this project was to provide a description of wave and current energy generating device systems and subsystems and provide a functional taxonomy; identify criteria pertinent to the design, construction, installation, maintenance and operations of these systems, and review the criteria to determine applicability, adequacy, and suitability; identify existing codes and standards that can be applied to these devices; conduct a regulatory gap analysis; and recommend regulatory initiatives or approaches for addressing identified deficiencies.

TAP-628-Assess the Design/Inspection Criteria/Standards for Wave and/or Current Energy Generating Devices

Free Flow Energy performed a gap analysis to determine if modifications should be made to engineering specifications and regulatory standards to enable the placement of wave and current energy devices within the outer continental shelf (OCS) without compromising safety and performance guidelines.

The following tasks were accomplished:

Task 1. Acquire basic engineering information and generate a list of engineering concerns.

Task 2. Address safety and regulatory concerns and generate a checklist for the complete spectrum of unique safety concerns.

TAP-605-Cooperative Research on Extreme Seas and their Impact to Floating Structures

In the offshore and shipping industry, extreme wave events have led to extensive damage and destruction of offshore structures. Hurricanes Ivan, Rita, Katrina, Gustav and Ike that hit the Gulf of Mexico and severe storm events experienced in the North Sea illustrate the importance of extreme wave design for all types of offshore structures. As the U.S. grows increasingly dependent on the steady supply of energy from federal offshore oil and gas reserves, BOEMRE remains attentive to new technologies that safeguard offshore energy facilities, their personnel, and the environment.

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