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http://dx.doi.org/10.5574/KSOE.2015.29.2.135

Calculation of Load on Jacket Leg during Float-over Installation of Dual Topsides using Single Vessel  

Bae, Dong-Yeol (Division of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
Lee, Seung-Jae (Division of Naval Architecture and Ocean Systems Engineering, Korea Maritime and Ocean University)
Lee, Jaeyong (Department of Naval Architecture and Ocean Engineering, Dong-eui University)
Publication Information
Journal of Ocean Engineering and Technology / v.29, no.2, 2015 , pp. 135-142 More about this Journal
Abstract
The float over method is the most preferred method for installing heavy topside onto a jacket platform. A very complex platform with multiple jacket structures on a specific field requires multiple installation procedures. This study validated the installation of two topsides using a single installation barge to reduce the operation and installation cost. The hydrodynamic properties of the installation barge during the installation of two topsides were calculated. The tension and fender forces during docking were investigated to show the validity of the proposed dual topside installation method. In conclusion, the operational safety of the proposed procedure was validated through the calculation of the motion of the installation vessel and loads on the jacket legs.
Keywords
Multiple topside; Installation; Mating; Docking; Motion RAOs; Fender forces; Mooring tensions;
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