Installation of subsea structures and equipment involves a lifting operation where the objects are exposed to large hydrodynamic forces when entering the oscillating sea-surface. During deployment, as the structure is lifted through the splash zone, snap forces due to slack or overload due to dynamic forces contribute to the maximum load experienced by the structure over the course of its design lifetime. This paper presents a method of how to verify the structural integrity of a subsea framework including determination of the maximum allowable sea-state in which the structure is safely installed. As well as describing an overall methodology for a subsea lifting analysis, hydrodynamic coefficients for cylinders in the splash zone is provided.
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ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
June 8–13, 2014
San Francisco, California, USA
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4538-7
PROCEEDINGS PAPER
Lifting Analysis of Subsea Framework Structures
Tor E. Søfteland,
Tor E. Søfteland
Subsea 7, Stavanger, Norway
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Odd V. Skrunes,
Odd V. Skrunes
Subsea 7, Stavanger, Norway
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Daniel Karunakaran
Daniel Karunakaran
Subsea7, Stavanger, Norway
Search for other works by this author on:
Tor E. Søfteland
Subsea 7, Stavanger, Norway
Odd V. Skrunes
Subsea 7, Stavanger, Norway
Daniel Karunakaran
Subsea7, Stavanger, Norway
Paper No:
OMAE2014-23816, V01BT01A004; 10 pages
Published Online:
October 1, 2014
Citation
Søfteland, TE, Skrunes, OV, & Karunakaran, D. "Lifting Analysis of Subsea Framework Structures." Proceedings of the ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. Volume 1B: Offshore Technology. San Francisco, California, USA. June 8–13, 2014. V01BT01A004. ASME. https://doi.org/10.1115/OMAE2014-23816
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