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

Ole Stobbe - Business Development Manager Northern Europe, Ideol Offshore
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

Ole Stobbe

Business Development Manager Northern Europe
Ideol Offshore

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

Daniel Bartminn - Team Leader Civil Engineering Wind Offshore, Innogy SE
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)

Daniel Bartminn

Team Leader Civil Engineering Wind Offshore
Innogy SE


Falk Lüddecke

Managing Director

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

Thijs Kamphuis

Project Engineer

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


Frank Hohman

ITH GmbH & Co. KG / IHF GmbH

12:10 pm - 12:40 pm Flange tolerances and their influence on monopile design

Christian Jensen - Senior Structural Engineer, Vattenfall
  • 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

Christian Jensen

Senior Structural Engineer

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

Kashif Kamran Toor

Lead Specialist

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 Turbines
Siemens 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

Filip Wegener - Engineer, Fraunhofer Institute IGP
  • Modelling of bolts to represent the plastic deformation behaviour
  • Influence of imperfections and higher preload levels on loss of preload
  • Recommendation for fatigue proof 

Filip Wegener

Fraunhofer Institute IGP

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 Hamburg, DNVGL
  • 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

Marcus Klose

Head of Section Steel Structures Hamburg

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

Christian Jensen - Senior Structural Engineer, Vattenfall
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

Christian Jensen

Senior Structural Engineer