NDLI: Ultra Heavy Wall Linepipe X65: Full Scale Severe Straining Sequences of Pipeline Strings

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Vito, Luigi Di Lucci, Antonio Amato, Stefano Mannucci, Gianluca Tintori, Federico Crippa, Stefano Giugliano, Paolo Armengol, Mariano Darcis, Philippe Ruiz, Eduardo Pelcastre, Mauricio Mota, Noé Quintanilla, Héctor
Copyright Year	2012
Abstract	Tenaris and Centro Sviluppo Materiali (CSM) are carrying out a Joint Industrial Project aimed at developing heavy wall line pipes. The suitability for very severe applications, involving high service pressures and temperatures, the latter causing large strain fluctuations, in presence of an aggressive sour environment, is analyzed both theoretically and experimentally, including small and full pipe models and tests. The full project program aims at developing a new generation heavy wall product, supported by a comprehensive laboratory analysis of the material response under severe mechanical loading in aggressive environment and a full scale testing program, including both pipe and girth weld. Both investigations are mainly addressed to basic understanding of impact on design criteria of interaction between severe loading and aggressive environment. Four papers, [2], [3], [4] and [5], have been already presented, in previous OMAE conferences, on this project. The present paper focusses on the full scale testing performed on strings of pipeline consisting of different pieces of pipe. In particular, two full scale testing have been performed applying the severe straining sequence defined as extreme in term of resistance against ratcheting, also involving plastic straining, as deduced in a previous work inside the project. The loading sequence was applied in global strain control, averaged on the whole string length, but necessarily the local distributions of strain differs in the three pieces of pipe. Analytical considerations are done about the expected straining behaviour and experimental results confirmed the theoretical considerations. The high strain hardening capability of the X65 steel pipes, metallurgically designed for strain based applications, guaranteed a good recovery of any non-homogeneity in straining, both during cycling that in larger axial deformation of the string. During severe cycling in elastic-plastic regime in presence of pipe internal pressure, the strings demonstrated good resistance to ratcheting. In fact, due to the material capability to redistribute the cycling strains along the whole sample length, any section experienced limited ratcheting with unreversed circumferential expansion, during cycling, well within limits of tolerability. It is worth noting that, even in presence of severe cycling conditions, both on-shore type girth welds (SAW for double joint) and off-shore type (GMAW in Narrow Groove Bevel Preparation) preserved their integrity with no cracking or other damage.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	695
Ending Page	705
Page Count	11
File Format	PDF
ISBN	9780791844908
DOI	10.1115/OMAE2012-83835
Volume Number	Volume 3: Pipeline and Riser Technology
Conference Proceedings	ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2012-07-01
Publisher Place	Rio de Janeiro, Brazil
Access Restriction	Subscribed
Subject Keyword	Gas metal arc welding Cracking (materials) Temperature Deformation Work hardening Pipelines String Steel Pressure Design Fracture (process) Welded joints Fluctuations (physics) Ocean engineering Damage Pipes Testing
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Ultra Heavy Wall Linepipe X65: Double Joint Girth Weld Performances for Severe Applications

Ultra Heavy Wall Linepipe X65: Severe In-Service Straining of Lined Pipes

Ultra Heavy Wall Linepipe X65: Ratcheting in Severe Cyclic Straining

Full Scale Reeling Simulation Test of X65 HFW Linepipe

Girth Weldability Evaluation of SAWH Pipes Produced From 23.7mm Thick, High-Nb Containing X70 Linepipe Steel

Welding of Internally Clad X65 Pipes With Precipitation Strengthened Ni-Based Filler Metals

Use of C-Mn Linepipe for High H2S Service

Girth Welding of X100 Pipeline Steels

Ultra Heavy Wall Linepipe X65: Material Performances for Severe Applications

Ultra Heavy Wall Linepipe X65: Full Scale Severe Straining Sequences of Pipeline Strings

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