This paper will describe advances in the interpretation of seam weld flaws detected by ILI (In-Line Inspection) and how they can be applied to an Integrity Management Plan. Signal processing improvements, validated by in-field verifications have enabled detailed profiles of surface breaking defects at seam welds for ERW (electric resistance welded) pipelines to be determined. Using these profiles along with established fracture and fatigue analysis methods allows for reductions in the unnecessary conservatism previously associated with the assessment of seam weld flaws detected by ILI. ILI technologies can accurately detect and size both critical and sub-critical flaws within the pipeline. Combining these results with other available data, e.g dig verifications, previous hydrostatic testing records, enables more realistic and better-informed integrity and maintenance planning decisions to be made. A real case study conducted in association with a pipeline operator is detailed in the paper and quantifies the benefits that can be realised by using these advanced assessment techniques, to safely and economically manage their assets going forward.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Advanced engineering critical assessments of seam weld features in pressure cycled hazardous liquid pipelines


    Additional title:

    Moderne technische Gefährdungseinschätzung von Schweißnahtmerkmalen in zyklisch druckbeanspruchten Pipelines für gefährliche Flüssigkeiten


    Contributors:


    Publication date :

    2008


    Size :

    9 Seiten, 11 Bilder, 2 Tabellen, 18 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Optimized sampling frequencies for weld reliability assessments of long pipelines

    Thacker, Ben H. / Warke, Robert W. / Carrasco, Cesar J. et al. | Tema Archive | 2004


    Stereoscopic Video Weld-Seam Tracker

    Kennedy, Larry Z. | NTRS | 1991


    Latest seam weld joint practice

    George, H.H. | Engineering Index Backfile | 1932


    Corrugated weld seam for active bolster

    ROYCHOUDHURY RAJ S | European Patent Office | 2016

    Free access

    Robot for ultrasonic weld seam detection

    WANG XINGSONG / GUI CHAO / LI JIE et al. | European Patent Office | 2020

    Free access