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For expanding your design / operaonal envelope without risking fracture
For expanding your design / operational envelope without risking fracture
Accurate, efficient, based on established and validated theory. In compliance with applicable standards, including BS7910 and DNV-OS-F101. That is how you want to present your ECA analyses for oil and gas pipelines, and other tubular structures, right?
LINKpipe is a direct calculation FEA-based tool for fracture mechanics integrity analyses, with built-in support for all your standard ECA processes. It combines the computational accuracy of 3D FEA-based tools with the end user efficiency of standards-based tools. Best of all, it established its bona fides over ten years of intense validation in the harsh environment of the North Sea, documented in a validation manual that comes with all releases.
If you need additional verification, as part of a third-party verification process, we are happy to compile project-specific verification documents.
www.linkftr.com
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Large-scale test of oil pipeline section in the test lab of SINTEF Materialsand Chemistry, done as part of validation of LINKpipe. Courtesy of SINTEF Materials and Chemistry.
www.linkftr.com
Integrated local defect analysis (brittle and ductile fracture) and structural analysis (plastic collapse, buckling)
Built-in support for ECA methodology in accordance with DNV-OS-F101 and BS7910
Full modeling of internal pressure, clad and misalignment
Workflow support for multiple load steps in single operations
GUI-driven mode for the occasional user, and scripting mode for the power user
Designed for general shell-shaped structures, including multi-layer shell-shaped structures (as for example in clad pipelines, lined pipelines and COPVs) and composite shell-shaped structures (as for example in structural welded joints)
Explicit modeling of situations inadequately covered by applicable standards, including internal pressure, fusion line cracks, misalignment, and weld residual stresses
The LINKpipe engineering advantage 1: Functional coverage
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On-reeling of pipeline on pipe-laying vessel.
ECAs, as part of pipeline installation and operation / maintenance and typically for installation planning, specification of NDT criteria, inspection planning, and inspection post-analysis
Assessment of pipelines subject to extreme loads, e.g., in arctic or seismic areas, or accidental loading scenarios, e.g., trawl impact or anchor hooking.
Assessment of new pipeline concepts, including clad pipelines, lined pipelines, new steel qualities, and new deployment concepts
Assessment of non-pipeline geometries, including plates, pressure vessels, and structural welded joints
Integration with probabilistic models / Monte Carlo simulations (typically for stochastic loads, random crack geometries, or statistical distribution of material parameters)
Integration with global analysis tools, including for example SIMLA from MARINTEK
The LINKpipe engineering advantage 2: Application area coverage
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All decisions about extending the operational envelope (and reaping the associated operational and monetary benefits) include an explicit or implicit assessment of the risk of fracture. LINKpipe lets you make this decision based on accurate numbers, not on some simplistic analytical solutions. Because you really want to be sure. And because standards compliance, safety, and the environment are key concerns of your stakeholders.
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www.linkftr.com
CSS: The use of LINKpipe in Statoil’s Aasta Hansteen project
CustomerSINTEF
About the customerSINTEF is the largest independent research organization in Scandinavia. SINTEF is a broadly based, multidisciplinary research organization with internationally recognized expertise in technology, medicine and the social sciences.
Employees2100 employees from 68 different countries. 48% of employees in researcher positions have a Ph.D.
Turnover2.8 billion in 2011, from 7 246 project for 2 312 clients.
NOTESINTEF Holding has an 80% shareholding in LINKftr, and senior members of SINTEF and NTNU were amongst the founders of LINKftr
Hans Iver Lange is Research Scientist with SINTEF Materials & Chemistry, one of SINTEF’s key experts on ECAs of pipelines, and a long-time user of LINKpipe.
Said Hans about the use of LINKpipe on the Aasta Hansteen project: ”This was a large ECA, with significant number of analyses to be done with a range of parametric assumptions. Statoil also wanted us to explore the possibility of venturing beyond DNV-OS-F101, Appen-dix A. The use of LINKpipe allowed us to complete the project in reasonable time and at a reasonable costs. Statoil has now contracted with us, DNV and LINKftr for an extension for further exploring certain technical issues related to fusion line defect location and shallow cracks.”
Business objectiveConduct a large number of fracture mechanics-based integrity assessments for Statoil’s Aasta Hansteen project, all with clad and misalignment
ResolutionSINTEF has historically been a persistent user of LINKpipe, and conducts around 10 pipeline ECAs every year with LINKpipe. When Statoil contracted with SINTEF and DNV, SINTEF chose to base their analyses on a combination of LINKpipe and Abaqus analyses.
Business benefits 3D FEA Massive improvements in analysis productivity compared to 3D Abaqus. Combining multi series analysis, not available in any other ECA tool today. Full support for modern pipeline concepts, including clad pipelines. Good workflow support for massive analysis jobs, through scripting
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Our history
LINKftr’s links with NTNU and SINTEF go back to 2001 when Prof. Bjørn Skallerud, at NTNU’s Department of Structural Engineering, and Prof. Christian Thaulow, at NTNU’s Department of Engineering Design and Materi-als, together with Ph.D. student Erling Østby and a group of research scientists at SINTEF founded LINKftr.
LINKftr continues to have strong links with NTNU and SINTEF, and professors in relevant fields serve in various advisory capacities to the company and on our Board of Directors. In addition, a significant number of NTNU doctoral students have over the years through their thesis work contributed to the development of various products in LINKftr’s product portfolio.
Christian Thaulow Founder and Professor NTNU, Dept. of Engineering Design and Materials
Bjørn SkallerudFounder and Professor NTNU, Dept. of Structural Engineering
Gunnar HärkegårdFounder and Professor NTNU, Dept. of Engineering Design and Materials
Bård NyhusBoard member and Research Manager SINTEF Materials and Chemistry
Our dedication to customers, engineering science, and quality
We serve top-tier and mid-tier companies in key industry verticals worldwide, with a focus on the really tough and the really knotty issues in fracture mechanics and fatigue. Our customer list includes: ESA / Fraunhofer, FMC, Reinertsen Engineering, RIST, SAIPEM, Shell, Statoil, Subsea 7, and Wärtsilä.
We are located at Gløshaugen, Trondheim, Norway, and are co-located with the Norwegian University of Science and Technology in Trondheim, Norway, see www.ntnu.no, and with SINTEF, one of Europe’s largest independent research organizations, see www.sintef.com. SINTEF Holding AS has a majority holding in LINKftr, with 80% of shares.
We are qualified according to Achilles JQS, because an ISO 9001:2008 compliant QA system and a NORSOK-style approach to HSE are key requirements for those of our customers that operate on the Norwegian Continental Shelf.
www.linkftr.com
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Address
LINKftr ASRichard Birkelands vei 2 B7465 Trondheim, Norway
Support
E-mail: [email protected]: +47 922 73 033Info: [email protected]
