Recently, a Petroleos de Venezuela S.A. (PDVSA) oil pipeline, 230 Km (143 miles) in length and 660 mm (26 in.) in diameter, had a leak in the longitudinal seam weld of one of its sections. The analysis of this failure revealed that the leakage was originated in a fatigue crack which nucleated at a stress concentrator associated to a weld defect, and it propagated due to the cyclic stresses induced by the internal pressure changes. Partial external inspection of the pipeline revealed that the problem was extended to other sections. This paper summarizes the actions taken for the refurbishment of the oil pipeline which included: 1- the management plan set to face the problem; 2- the inspection of the pipeline, externally and internally; 3- the analysis of the inspection results; 4- the defect tolerance assessment/fitness-for-purpose study, to estimate both, the critical crack sizes as well as the crack propagation rates; 5- the development of repair procedures, and, 6- the determination of future inspection and maintenance recommended programs. All of it, with the main purpose of maintaining the operation of this line with complete guarantee of its integrity. Thanks to these actions, it has been possible to prevent additional failures in the same pipeline as well as to reduce in about MM dollar 25 the maintenance cost associated with it.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Refurbishment of a 230 Km oil pipeline with longitudinal seam weld fatigue cracking problem


    Beteiligte:
    Ledezma, M. (Autor:in) / Aranguren, J.G. (Autor:in) / Paletta, F. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    10 Seiten, 12 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Recent innovations in pipeline seam-weld integrity assessment

    Anderson, T.L. | British Library Online Contents | 2013


    Stress Corrosin Cracking Research on Pipeline Steel Weld

    Mi, Y. / Zhou, G. | British Library Online Contents | 1996


    Stereoscopic Video Weld-Seam Tracker

    Kennedy, Larry Z. | NTRS | 1991


    MULTI-TUBULAR BEAM WITH FORGED WELD SEAM

    MATECKI JOSEPH / MCHENRY JEFFREY / NAVARRE SCOTT | Europäisches Patentamt | 2023

    Freier Zugriff

    MULTI-TUBULAR BEAM WITH FORGED WELD SEAM

    MATECKI JOSEPH R / MCHENRY JEFFREY / NAVARRE SCOTT | Europäisches Patentamt | 2023

    Freier Zugriff