DNV SESAM 2021

Offshore wind turbine foundations

Sesam software for offshore wind turbine foundation design and analysis is based on decades of experience in engineering of offshore structures. It provides a tailor-made solution for structural strength analysis of fixed and floating offshore wind support structures, such as wind turbine jackets, floating platforms, and substations. It can be used for conceptual and detailed design of the primary structure, as well as for the design of secondary steel such as boat landings and J-tubes. Besides this, Sesam can perform other lifecycle analyses such as transportation, lifting, and corrosion protection.

Wind turbine jacket design

Sesam for fixed OWT structures can be used for any complexity of structure, from monopiles and tripods to wind turbine jacket structures and substations. The software addresses the industry's need for a structural strength analysis solution to account for the combined effect of the wind turbine and hydrodynamic loads. Sesam is developed to address the challenges in wind turbine support structure design and is a complete system covering all aspects of fixed OWT installations.

Marine operations with 3D simulation and visualization

Sesam's modules Sima, Simo and Riflex let you visually simulate, test and evaluate marine operations ahead of offshore handling. These modules allow you to significantly reduce risk for transportation, installation and lifting of fixed and floating structures, and installation of subsea equipment.

What you get with Sesam's integrated set of tools

• Model and visualize transportation, installation and lifting analysis ahead of time in 3D simulation
• Run multiple ‘what-if’ scenarios
• Shows results of all known factors, including dynamic positioning
• Coupled and multi-body analysis is performed in time domain
• Integrated post-processor and results presentation

Reducing risk during marine operations

Marine offshore operations can involve unpredictable and unforeseen complexities. By analysing multiple possible scenarios and simulating operations in 3D and real time, you can base critical decisions on the best available information. The benefits of using Sesam can be crucial for successful completion of offshore installations.

With Sesam's software toolset you can

• Manage risk of marine operations
• Perform ‘what-if’ analyses and improve HSE performance
• Evaluate feasibility and gain better understanding of main challenges
• Prepare for actual operation through familiarization
• Support decision-making during actual operation
• Analyse based on 3rd-order Runge-Kutta and Newmark-β methods, among others

Sesam for marine systems can be used for

• Lifting analysis of topsides and modules
• Lifting and installation analysis of SURF structures (templates, pipelines, flexible risers)
• Float-over installation/removal of topsides
• Load-out from quay to barge 
• Offloading (tankers in tandem or side-by-side)
• Offshore crane operations
• Jacket lift installation and removal
• Transportation of offshore floaters (e.g. TLP, semi-submersible, spar)
• Up-ending of spar, and towing platforms by tugs (e.g. GBS)
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