Platte Pipe Line's use of a new inspection tool to identify seam-weld defects revealed that the TFL (transverse field inspection) tool had less impact on pipeline operations and provided greater assurance than hydrostatic testing for the long-term operational reliability of the pipeline system. Use of the tool was prompted by an operational failure on the Platte system in July 1997. The failure was attributable to operational pressure-cycle fatigue crack growth of a hook-crack in the longitudinal seam weld. The defect had grown to failure over 24 years since the pipe had been hydrostatically tested in 1973. In response to this failure, the US DOT (Department of Transportation) OPS (Office of Pipeline Safety) issued a corrective order to verify the integrity of this pipeline through hydrostatic testing or an approved in-line inspection program.


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    Title :

    Platte inspection program supports alternative to hydrostatic testing


    Additional title:

    Das Platte-Inspektionsprogramm ist eine Alternative zu hydrostatischen Tests von Pipelines


    Contributors:
    Yasinko, E.A. (author) / Vieth, P.H. (author) / Dick, D.D. (author) / Pierantoni, T.D. (author) / Nidd, P.G. (author)

    Published in:

    Oil and Gas Journal ; 99 , 13 ; 54-59


    Publication date :

    2001


    Size :

    6 Seiten, 3 Bilder



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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