10th International Conference Offshore Foundations 2020
30 August - 1 September 2022
Dorint City-Hotel Bremen | Germany
Conference Day Two
7:30 am - 7:45 am
Registration for breakfast workshop A and welcome coffee
7:45 am - 9:15 am
Workshop A: Local supply chain and local added value
This year will see the launch of the first offshore wind leasing round for maritime regions by Crown Estate Scotland. Some of the maritime regions that Crown Estate Scotland outlined, can only be reached by floating foundations.
- Serial Manufacturing for the example of Scotland
- Methods of concrete construction with local labour in local ports
- Local supply chain opportunities
- Adaptability to ports for construction and WTG installation
9:15 am - 9:30 am
Registration for conference day two and welcome coffee
9:30 am - 9:40 am
Chairman's opening remarks
9:40 am - 10:10 am
Fatigue assessment of welded substructures for offshore wind
- Live joint-industry project attempting to establish new fatigue curves for welded steel components
- Extension to the Structural Lifetime Industry Collaboration (SLIC) project;
- Project participants: Ørsted, RWE, Scottish Power Renewables, Shell, SSE, Vattenfall and Parkwind;
Carbon Trust, speaker to be announced
10:10 am - 10:40 am
Monopile foundations - connection types for diameters: a technical comparison related to opex and capex
Falk Lüddecke -
Managing Director,
JBO GmbH
- Overview of state of the art and innovative connection types
- Technical limits and challenges
- Cost comparison (opex and capex)
10:40 am - 11:10 am
Development of the slip joint connection
Thijs Kamphuis -
Project Engineer,
DOB-Academy
- Offshore installation and testing of a slip joint connection for an offshore wind turbine
- Lessons learned and project results of the offshore test
- Outlook and next steps slip joint connection
11:10 am - 11:40 am
Refreshment break and networking
11:40 am - 12:10 pm
Bolted flange connections: Fastener design up to M80 and higher notch category
Frank Hohman -
CEO,
ITH GmbH & Co. KG / IHF GmbH
- Fastener design, material specification, DiBT certification up to M80 and comparison between head bolts and stud bolts
- Smaller scatter of preload min. and preload max. values: Increased bolting process quality by semi-automatic bolting procedure including documentation, definition of control values and monitoring values
- Different measurement methods and their results from offshore projects
12:10 pm - 12:40 pm
Flange tolerances and their influence on monopile design
- Measurement of flange tolerances
- Calculation of stress concentration factor between flange and monopile including imperfections - what is the influence of imperfections?
- Calculation of driving induced fatigue damage with and without imperfections - how large is the difference?
- Actions in case of tolerances outside specifications
12:40 pm - 1:10 pm
Driving induced fatigue damage calculation for flange and various attachments welded to monopile
Kashif Kamran Toor -
Lead Specialist,
Vattenfall
- Pile driving simulation in LSDYNA
- Attachments’ response during pile driving
- Fatigue damage based on Hotspot methodology
1:10 pm - 2:40 pm
Networking luncheon
2:40 pm - 3:10 pm
Stress concentration at welding necks of flanged connections
Marc Seidel -
Senior Key Expert - Support Structures for Offshore Wind Turbines,
Siemens Gamesa Renewable Energy
- Analytical calculation model to determine stress concentrations at weld necks
- Impact of imperfections on results
- Consequences for flange design
Marc Seidel
Senior Key Expert - Support Structures for Offshore Wind TurbinesSiemens Gamesa Renewable Energy
3:10 pm - 3:40 pm
Loss of preload due to plastification as a result of imperfections and/ or higher preload levels
- Modelling of bolts to represent the plastic deformation behaviour
- Influence of imperfections and higher preload levels on loss of preload
- Recommendation for fatigue proof
3:40 pm - 4:10 pm
Joint industry project ACE (Alleviating cyclone and earthquake challenges for wind farms) for offshore markets in the Asian-Pacific region
Marcus Klose -
Head of Section Steel Structures,
DNV
- Case study: first lessons learned Taiwan/ start in Japan
- Minimize cost, warranty and liability risk
- Optimize for seismic and typhoon conditions at an early stage
- Balance between safety and cost
- Understand safety level and the risk associated
4:10 pm - 4:40 pm
Update on market opportunities in Asia
- Market opportunities in Taiwan
- ....
- ....
4:40 pm - 4:50 pm
Chairperson's closing remarks
4:50 pm - 5:00 pm
Registration for Workshop B
5:00 pm - 6:30 pm
Evening Workshop B: Measurement tolerances
Measurement tolerance is meant to be used when setting the acceptable error range (the range within which quality can still be maintained) based on the design value with the assumption that variation will occur at any given step. In this workshop, we discuss the
- Structures measurements
- Seals measurements
- Way to more efficient foundations and connection types
