NDLI: Offshore Installation of Spool Pieces

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Reinholdtsen, Svein-Arne Sandvik, Peter Christian Hanson, Tor David
Copyright Year	2002
Abstract	This article presents a numerical model for dynamic analysis of an offshore installation of a spool piece. A spool piece is a pipe element used for connection between a pre-laid pipeline and a structure on the seabed. It is often designed with several knees, to accommodate thermal expansion. The spool piece can be lowered through the splash zone with a close to horizontal orientation, or it can be tilted during the splash zone crossing, to control the flooding and to reduce the wave loads. The spool piece is modelled as several interconnected stiff segments, which can have any orientation. The calculated forces include the distributed weight and buoyancy, and also hydrodynamic loads from regular or irregular waves, either if the segment is fully submerged or partly out of water. Concentrated masses, representing connectors, may be included in the spool piece model. The model is demonstrated through a few selected examples including comparisons with field observations. The calculated maximum forces, which will be used for deriving operation limits, are compared to results from simpler and currently used methods of analysis.
Sponsorship	Ocean, Offshore, and Arctic Engineering Division
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISBN	0791836118
DOI	10.1115/OMAE2002-28028
e-ISBN	0791835995
Volume Number	21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1
Conference Proceedings	ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
Language	English
Publisher Date	2002-06-23
Publisher Place	Oslo, Norway
Access Restriction	Subscribed
Subject Keyword	Knee Water Computer simulation Pipelines Dynamic analysis Buoyancy Floods Waves Seabed Stress Thermal expansion Offshore installations Weight (mass) Pipes
Content Type	Text
Resource Type	Article

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