1/12/2024 0 Comments Jack Move instal![]() ![]() With more insights from the validation of theoretical models and appropriate safety factors we will get enormous benefits from increased operational efficiency, new operation philosophies, new designs, etc,” says Goncalves.Įric Romeijn, Manager R&D at Huisman Equipment, added: “We consider simulations of bottom impact as crucial to further optimize Huisman’s next-generation jacking systems for offshore WTIVs. ![]() “We have achieved great insights into simulations and the effect of different parameters, but we still need more insights into the appropriate safety factors needed to ensure safe operations. The JIP concluded that the probabilities of structural failure can be relatively high under certain conditions. The third dimension is documenting the role of safety factors on the probabilities of structural failure. This is a key area where major strides can be made to improve WTIV operability,” says Goncalves. ![]() “The predicted forces have not yet been correlated against actual measured forces from live operations. Another dimension is applying full-scale instrumentation (sensor) measurements to validate model output for real conditions. Predictive simulation is, however, only one dimension of the challenge in achieving a final solution. Geotechnical, hydrodynamic and environmental conditions have to match a given WTIV’s structural capabilities.” Deeper water also causes vessels to behave differently versus shallow water. “Harder soil generates more impact than soft soil, while stronger winds and higher waves can exaggerate impact events. ![]() “The developed numerical model incorporates vessel heading, weather and soil conditions, as well as the strength of the WTIV, to potentially expand the weather window where the WTIV can be safely installed,” says JIP project manager Antonio Goncalves, Business Lead, Technical Advisory at DNV. It applies to both existing and new WTIVs, ensuring right from the design stage that vessels can operate within a reasonable range of conditions. This allows operators to assess the sea state limit in each situation for safe lowering of the jack-up legs, without the risk of damaging the vessel, the cargo or the environment or endangering crew. With input from all JIP participants, DNV developed a numerical model to accurately predict bottom-impact forces. ![]()
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