NDLI: Structural Integrity Assessment of a Pipeline Subjected to an Underwater Explosion

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Monti, Paolo Molinari, Caterina Bocciarelli, Massimiliano Corigliano, Alberto Mariani, Stefano
Copyright Year	2011
Abstract	Several trunklines cross either areas which in the recent past were war theatre or dumping areas used for burying weapons after the last war. The presence of unexploded mines, bombs or torpedoes on the seabed constitutes a potential hazard for the structural integrity of submarine pipelines. Before laying, it is therefore necessary to remove the unexploded charges within a corridor including the route. Risk still remains during the pipeline life, since annual surveys can show evidences of unexploded mines or torpedoes dragged by fishing gears till the protruding pipeline. Consequently, the structural integrity assessment of a submarine pipeline subjected to underwater explosions is of the utmost importance. The aforementioned assessment involves several aspects: the characterization of shock wave and gas bubble pulsation in water; the definition of loading conditions on the pipeline; the characterisation of the strain-rate properties of the steel; the local and global structural analysis; the pipe verification criteria. Aim of this study is to describe how the aforementioned aspects can be managed. Analytical and numerical approaches concerning the assessment of the structural response of the pipeline are presented, and criteria for Serviceability and Accidental Limit States are proposed.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	159
Ending Page	168
Page Count	10
File Format	PDF
ISBN	9780791844366
DOI	10.1115/OMAE2011-49178
Volume Number	Volume 4: Pipeline and Riser Technology
Conference Proceedings	ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2011-06-19
Publisher Place	Rotterdam, The Netherlands
Access Restriction	Subscribed
Subject Keyword	Water Pipelines Bombs Risk Explosions Hazards Maintainability Warfare Steel Seabed Shock waves Bubbles Gears Weapons Underwater pipelines Pipes Structural analysis
Content Type	Text
Resource Type	Article

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