Conference day 1
Update on international standards
8:00 am - 8:50 am Registration and welcome coffee
8:50 am - 9:00 am Chairperson's opening
9:00 am - 9:30 am An updated international standard for the design of offshore wind turbines and their support structures: IEC 61400-3-1
The International Electro-technical Commission standard for bottom-fixed offshore wind turbine
design (IEC 61400-3-1) has been significantly updated to reflect advances in offshore wind turbine
technology and the experience gained by the offshore wind industry since the standard was first
published in 2009. The new edition of the standard will be published in 2019 and will be of great
assistance to designers, certifiers and developers of offshore wind turbines and installations. The
proposed presentation will provide a summary of the new edition and highlights the key updates.
Tim Camp is responsible for the development of the IEC standard for offshore wind turbines and
their support structures.
Tim CampCo-convenor of TC88 MT3
LOC Group Ltd
Envision foundations for extreme weather conditions
9:30 am - 10:00 am Foundation design of offshore wind turbine in high soil liquefaction potential area
Taiwan is located on the circum-Pacific seismic belt. In addition, the geology of western Taiwan is mainly modern alluvium consisting of sedimentary deposits, which are sand-based, mixed with layered clay soil, and soft. To ensure safety and stability of the offshore wind turbine supporting structures, it is important to assess the offshore wind farms seismic forces reasonably. The objective of this presentation is to provide the design procedure of the supporting structure within the earthquake zone with high liquefaction potential.The seismic demands of CNS15176-1 presented by Bureau of Standards, Metrology and inspection, M.O.E.A. are also be introduced.
• Seismic demand for offshore wind farm in Taiwan
• Soil liquefaction potential of offshore wind farm in Taiwan
• Design consideration of offshore wind turbine foundation with high soil liquefaction potential
Prof. Dr.-Ing. Yu-Shu KuoProfessor
National Cheng Kung University, Taiwan
10:00 am - 10:15 am Match and win
Identify your group while at the same time getting to know many of your peers in a short amount of time.
10:15 am - 10:45 am Refreshment break and networking
10:45 am - 11:15 am Extreme weather condition analysis
11:15 am - 11:45 am Seismic design of offshore wind turbine foundations – Learnings from projects in Taiwan
• Liquefaction assessment, in loose to medium dense, silty sand, silts and low plasticity silty clays
• Prediction of residual rotation of MP after design seismic event
Søren Peder Hyldal SørensenSenior Specialist, Geotechnical Offshore Wind
Positive feedback loop: Implement structural health and condition monitoring to improve design and operation
12:15 pm - 12:45 pm The Double Slip Joint connection – a game changer in offshore wind
• Fast turbine installation using KCI’s Double Slip Joint
• Fixed and Floating Wind Turbines
Boudewijn van GelderManager Research & Development
12:45 pm - 2:15 pm Networking lunch
2:15 pm - 2:45 pm Towards smart offshore foundations, how measurements help understand offshore wind turbines
OWI-lab is a Flemish research initiative between universities, Sirris and the (offshore) wind industry.
At the VUB (University of Brussels) OWI-lab has targeted the development of measurement
solutions suited for the offshore environment. We target particular questions, provided by
operators and developers, using state of the art monitoring hardware.
In recent years OWI-lab/VUB has conducted measurements at all Belgian offshore wind farms and
derived methodologies to tackle questions such as soil-structure interaction, structural health
monitoring and residual life assessments. In this presentation we will focus on the recent
developments at the VUB on how monitoring can be used to the benefit of operators and show an
outlook of which direction monitoring hardware is evolving.
Dr. Wout WeijtjensResearch and development engineer
Prof. Dr. Christof DevriendtScientific Research Coordinator
2:45 pm - 3:15 pm Structural health monitoring
Structural health monitoring systems are installed using a variety of calibration techniques and
often their performance reliability is not properly understood. The presentation will examine how
systems can be calibrated and performance quantified. In addition, inspection reliability and how
this fits with SHM and probabilistic remaining life calculations will be presented.
Prof. Feargal BrennanProfessor of Offshore Engineering
University of Strathclyde
3:15 pm - 3:45 pm Digital Guardian: Health monitoring and lifetime extension of OWF structures
LICengineering and Akselos have developed a reduced based FE-tool for design and monitoring of
offshore structures such as OWF Foundations. The FE tool is gives the ability to model all in One
Model = Digital Twin, including complex joints, with CPU speed approximately 1000 times higher
than conventional FEA, which makes it possible to perform real time analyses from on-line
In combination with a novel Structural Integrity Monitoring system, based on Operational Modal
Analyses developed by LIC, this makes an efficient Guardian tool for structural health monitoring
and providing valuable information for lifetime extension.
The system is tested on a offshore platform in the North Sea operated by a super major, and it will
be demonstrated how the Digital Guardian can provide the operator with health monitoring, to be
used in the daily operation, for lifetime extension or in relation to due diligence etc.
Hans Jørgen RiberDirector R&D
3:45 pm - 4:15 pm Refreshment break and networking
Advances and development of floating foundations
4:15 pm - 4:45 pm Main differences between floating solutions and jackets from the manufacturing point of view
Nervión, subcontractor of Navantia, has participated in the Wikinger project (Iberdrola), Nissum
Bredning Vind (Siemens), Hywind (Equinor), East Anglia ONE (ScottishPower) and WindFloat (EDP)
projects with turnkey contracts for the assembly work of all these structures.
This privileged position has allowed Nervión to know first-hand how the Navantia shipyard has had
to adapt for each situation.
3-legged Jackets, 4-legged Jackets, Spars, Floating Platforms, are different models that make the
shipyard and the companies that assemble these structures have to adapt agilely to be able to
undertake the projects with safety and efficiency.
Roberto Carlos Bouzas SaavedraProject Manager Offshore & Public Naval
4:45 pm - 5:15 pm Floating Spar Wind Turbine Generators with an Integrated Substructure and Tower
The proposed concept relates to modifying the construction/assembly method to reduce the
cost and schedule of a floating Spar wind platform. Detail analysis was performed and execution
plan developed to quantify the benefits of integrating the tower and the substructure at the
construction yard in a horizontal position compared to installing the tower by lifting while the wind
platform is floating vertically.
Igor KopsovSales and Marketing Manager