Call for entries from companies and consortia interested in undertaking a study for the OWA Foundations Technical Working Group (TWG-F) to quantify confidence in the Integrated Load Analysis (ILA) results for different case study parameters to develop guidance on the minimum requirements needed to achieve suitable structural reliability. In addition, it aim to validate and develop guidelines for a modelling framework for the ringing response for XXL monopiles, which can be implemented within existing load case assessments.

The main objectives of this work are to understand how to apply DNV-ST-0437 for DLC 6.X load cases by evaluating the impact of sea-state peak periods (Tp) at both the return and natural periods of the structure. Another aim is to assess the confidence in ILA results across different case study parameters to define the minimum requirements needed for ensuring structural reliability. Finally, the work seeks to validate and develop guidelines for a modelling framework that can be implemented within existing load case assessments.

The deadline for clarification questions has passed. Answers can be found in the tender documents below.

The closing date to receive tender submissions is 2 October 2025 at 13:00 BST.

All tender submissions should be sent electronically, by their respective deadlines, to alicia.stammers@carbontrust.com and maria.gonzalez-martin@carbontrust.com.