Posters
Come meet the poster presenters to ask them questions and discuss their work
We would like to invite you to come and see the posters at our upcoming conference. The posters will showcase a diverse range of research topics, and will give delegates an opportunity to engage with the authors and learn more about their work. Whether you are a seasoned researcher or simply curious about the latest developments in your field, we believe that the posters will offer something of interest to everyone. So please join us at the conference and take advantage of this opportunity to learn and engage with your peers in industry and the academic community.
PO221: Rocky seabeds leave the stone age: Bringing together academic research and industry experience in the new BS10009 guideline for cable stability
Terry Griffiths, Director/Principal Engineer, Aurora Offshore Engineering
Abstract
There is an emerging need for the offshore renewable industry to have their own bespoke design guidelines because the associated projects and offshore facilities differ in fundamental ways to oil and gas facilities. Subsea power cables that deliver offshore renewable energy (ORE) to the grid must be secure and stable on the seabed. In many regions of ORE development (including both fixed and floating wind) the seabed is composed of rock and the cables are not buried but lie on the seafloor, exposed to strong currents or breaking waves. This paper introduces the newly released BS10009 design guideline for subsea cables on rocky seabeds. The starting point for subsea cable stability design has traditionally been the codes of practice developed for larger oil and gas pipelines. However, the physics of cable-seabed interaction are very different, due to the smaller diameter and higher flexibility of cables. In addition, rocky conditions lead to different cable-seabed interaction mechanisms compared to uncemented sediments. This new guideline sets out new approaches to the design of cables on rocky seabeds, including: * Consideration of bespoke renewables-focused target reliability and risk factors. * A simplified design method suitable for early project stages and a more detailed, thorough design method for application to project detailed design phases * Consideration of cable-specific failure limit states including tension, bending, abrasion and fatigue * Guidance on survey methods for evaluating the meso-scale roughness of the seabed * Guidance on how marine growth on the cable can be predicted
No recording available for this poster.
