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Mating analysis for float-over installation of a large topside in various load transfer stages

Authors
Jung, S.J.Kwak, H.U.Oh, S.H.Kwon, Y.J.Nam, B.W.Kim, N.W.Lee, K.Sung, H.G.
Issue Date
2018
Publisher
International Society of Offshore and Polar Engineers
Keywords
DTV; Float-over; Jacket; Mating analysis; Topside
Citation
Proceedings of the International Offshore and Polar Engineering Conference, v.2018-June, pp 944 - 948
Pages
5
Journal Title
Proceedings of the International Offshore and Polar Engineering Conference
Volume
2018-June
Start Page
944
End Page
948
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8443
ISSN
1098-6189
Abstract
In this study, time-domain mating analyses were carried out to verify safety of float-over operation during various load transfer stages. Water depth of the target field is 130m. Topsides weighing 20,000 ton will be installed on fixed jacket structure by float-over using DTV (Deck Transportation Vessel) with the support of mooring lines. Five (5) operational stages from initial contact to 100% load transfer have been assessed by time domain analysis. For topsides mating analysis, DSUs, DSF Support Points, LMUs, steel-to-steel contacts at LMU points, sway fenders, mooring lines and many parts were modelled to investigate the interactions between the DTV, the topsides and the jacket. The results of analyses have been approved by a MWS. Copyright ? 2018 by the International Society of Offshore and Polar Engineers (ISOPE)
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친환경해양개발연구본부 (심해공학연구센터)
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