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Per R. Nystrøm
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Journal Articles

A Mechanical-Empirical Model for Anchoring Capacity of Inclined Pile in Clay Used for Deep Water Floating Wind Turbines

Moeen Nazari, Otilia Vermeulen, Lluís V. Llistar, Per R. Nystrøm
Journal: International Journal of Offshore and Polar Engineering
Publisher: International Society of Offshore and Polar Engineers
Int. J. Offshore Polar Eng. 34 (04): 374–382.
Paper Number: ISOPE-24-34-4-374
https://doi.org/10.17736/ijope.2024.cl27
Published: 12 December 2024
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View articletitled, A Mechanical-Empirical Model for Anchoring Capacity of Inclined Pile in Clay Used for Deep Water Floating Wind Turbines
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Proceedings Papers

Pipeline Installation Challenges and Design Optimization for Ultra-Deep Water: Case Study for S-Lay and J-Lay Methods

Jihan Herdiyanti, Per R. Nystrøm
Paper presented at the The 34th International Ocean and Polar Engineering Conference, June 16–21, 2024
Paper Number: ISOPE-I-24-203
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View Paper titled, Pipeline Installation Challenges and Design Optimization for Ultra-Deep Water: Case Study for S-Lay and J-Lay Methods
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Proceedings Papers

Parametric Study of Inclined Pile Ultimate Capacity in Clay as Anchoring Solution for Deep Water Floating Wind Turbines

Moeen Nazari, Otilia Vermeulen, Lluís V. Llistar, Per R. Nystrøm
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-060
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View Paper titled, Parametric Study of Inclined Pile Ultimate Capacity in Clay as Anchoring Solution for Deep Water Floating Wind Turbines
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Proceedings Papers

On-Bottom Stability Optimisation of the BM-C-33 Pipeline Using 3D Non-Linear Time-Domain Analysis

Per R. Nystrøm, Odd Martin Lyngsaunet, Joaquin J. Vieiro, Vegard Longva, Egil Giertsen, Håvar Ilstad, Erik Levold, Nils Ø. Kristiansen
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-212
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View Paper titled, On-Bottom Stability Optimisation of the BM-C-33 Pipeline Using 3D Non-Linear Time-Domain Analysis
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Proceedings Papers

Optimising the Johan Castberg Trawl Interference Design Using Close Lay of Rigid Flowlines and Structural Reliability Analysis

Odd Martin Lyngsaunet, Per R. Nystrøm, Geir Endal, Erik Levold, Halvor Stokholm
Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-640
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View Paper titled, Optimising the Johan Castberg Trawl Interference Design Using Close Lay of Rigid Flowlines and Structural Reliability Analysis
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Proceedings Papers

Pipeline Vertical Catenary Effects on the Stress Levels in Retrofit Wye Structure and Optimization Under Marine Operations

Ljiljana Djapic Oosterkamp, Zhenguo Tu, Samson Katuramu, Per R. Nystrøm, Arild Nedland
Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-465
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View Paper titled, Pipeline Vertical Catenary Effects on the Stress Levels in Retrofit Wye Structure and Optimization Under Marine Operations
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Proceedings Papers

Retrofit Subsea Wye Structure within Hot Section of an Oil Pipeline

Ljiljana Djapic Oosterkamp, Zhenguo Tu, Samson Katuramu, Per R. Nystrøm
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-500
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View Paper titled, Retrofit Subsea Wye Structure within Hot Section of an Oil Pipeline
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Proceedings Papers

Lay Method to Allow for Direct Tie-in of Pipelines

Per R. Nystrøm, Geir Endal, Odd M. Lyngsaunet
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-488
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View Paper titled, Lay Method to Allow for Direct Tie-in of Pipelines
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Proceedings Papers

Lay Method to Make Pipelines Conform to Uneven Seabed Topography

Geir Endal, Per R. Nystrøm, Odd M. Lyngsaunet
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-489
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View Paper titled, Lay Method to Make Pipelines Conform to Uneven Seabed Topography
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Proceedings Papers

Pipe-in-Pipe Global Buckling And Trawl Design On Uneven Seabed

Audun S. Kristoffersen, Per Olav Asklund, Per R. Nystrøm
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-300
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View Paper titled, Pipe-in-Pipe Global Buckling And Trawl Design On Uneven Seabed
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Proceedings Papers

Design Loads Uncertainties Study - Thermal Buckling of Subsea Pipelines

Jiong Guan, Per R. Nystrøm
Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-374
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Journal Articles

Design For Thermal Buckling of Åsgard Transport Gas Trunkline

Per R. Nystrøm, Knut Tørnes, Jan S. Karlsen, Geir Endal, Erik Levold
Journal: International Journal of Offshore and Polar Engineering
Publisher: International Society of Offshore and Polar Engineers
Int. J. Offshore Polar Eng. 12 (04).
Paper Number: ISOPE-02-12-4-271
Published: 01 December 2002
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Proceedings Papers

Design of the Åsgard Transport Gas Trunkline For Thermal Buckling

Per R. Nystrom, Knut Tomes, Jan S. Karlsen, Geir Endal, Erik LevoM
Paper presented at the The Eleventh International Offshore and Polar Engineering Conference, June 17–22, 2001
Paper Number: ISOPE-I-01-127
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Proceedings Papers

Case Studies In Pipeline Free Span Fatigue

Angus Reid, Trond L. Grytten, Per R. Nystrom
Paper presented at the The Tenth International Offshore and Polar Engineering Conference, May 28–June 2, 2000
Paper Number: ISOPE-I-00-150
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Proceedings Papers

A Finite-Element Model For In-Situ Behavior of Offshore Pipelines On Uneven Seabed And Its Application to On-Bottom Stability

Bjørn A. Ose, Yong Bai, Per R. Nystrøm, Per A. Damsleth
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-137
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View Paper titled, A Finite-Element Model For In-Situ Behavior of Offshore Pipelines On Uneven Seabed And Its Application to On-Bottom Stability
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Proceedings Papers

3-D Dynamic Buckling And Cyclic Behaviour of HP/HT Flowlines

Per R. NystrØm, Knut TØmes, Yong Bai, Per Damsleth
Paper presented at the The Seventh International Offshore and Polar Engineering Conference, May 25–30, 1997
Paper Number: ISOPE-I-97-198
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