search.noResults

search.searching

dataCollection.invalidEmail
note.createNoteMessage

search.noResults

search.searching

orderForm.title

orderForm.productCode
orderForm.description
orderForm.quantity
orderForm.itemPrice
orderForm.price
orderForm.totalPrice
orderForm.deliveryDetails.billingAddress
orderForm.deliveryDetails.deliveryAddress
orderForm.noItems
3D model of the platform


Model after construction


Highly effi cient Tension Leg Platform design, testing and analysis


MARIN tested Hess’ Stampede Tension Leg


Platform (TLP) in the Offshore Basin in waves, wind and


current in 2014. A thorough, 30-day test programme was put together in close cooperation with HESS, its contractor MODEC and MARIN.


Jorrit-Jan Serraris & Robert Heerink, j.j.serraris@marin.nl


M


ARIN continuously optimises its modelling, testing and data analysis approaches in order to


provide clients with efficient, highly accurate results. This article describes how a detailed TLP model is created with the aid of 3D computer modelling, how an extensive set of environmental conditions is calibrated efficiently and how the use of high-speed video recordings provides detailed insight into the impact of high and breaking waves on a platform. Finally, all the measured data was analysed and delivered directly after each test thanks to a detailed data analysis plan put together before the project got underway.


Model design Every project at MARIN starts with a CAD design of the vessel or platform. Nowadays, it is usual to make 3D CAD designs of the complete model, including


detailed appendages on the hull and internal structural members. This approach gives the advantage that the displacement can be checked and the weight distribution of the model is known before manufacturing. For TLPs and semi submersibles, the weight distribution can be challenging to realise at model scale. The 3D CAD model assists the engineers to optimise the model design in order to realise the correct weight distribution of the platform. Additionally, this approach means that the model manufacturing is very efficient. In a similar way to a shipyard, all plates and elements are pre-cut and delivered to the assembly place, in this case MARIN’s model manufacturing workshop. All the pre-cut plates are assembled like a building package.


Environmental modelling An extensive set of more than 150 waves was calibrated,


report 9


158656


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24