A simple economic procedure applied to NGL (natural gas liquids) pipeline can help operators determine -based on the type, shape, and position of any abnormalities detected during periodic magnetic-flux leakage pigging- whether to shut the pipeline for repair or continue operations. The first part of two articles described the three steps of this procedure: Identification: A magnetic-flux leakage intelligent pig report and ultrasonic Scan B testing located the defect. Quantification: Ultrasonic thickness measurements and Scan B results use gammagraphic inspection to determine the defect's size and location on the pipe wall. Assessment: A simple finite-element analyis model simulates the real defect and then corroborates results against API Recommended Practice 579 Fitness for Service, January 2000. This concluding article applies the procedure and FEA directly to a fitness-for-service assessment.


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    Titel :

    Integrity management - conclusion. Procedure, FEA apply to NGL fitness-for-service assessment


    Beteiligte:

    Erschienen in:

    Oil and Gas Journal ; 106 , 23 ; 50-52


    Erscheinungsdatum :

    2008


    Format / Umfang :

    3 Seiten, 4 Bilder, 2 Tabellen, 1 Quelle



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch








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