The use of full-encirclement steel sleeves for pipeline repair is a relatively mature technology. As a result, relatively little is written about the use of steel sleeves (Type A) compared to the use of composites (Type B) where new products are continually introduced. Type A sleeves simply encircle the pipeline and provide structural reinforcement of the defective area. To do this, they do not require sleeve-end fillet welds. Type B sleeves also encircle the pipeline and provide structural reinforcement, but since the ends are fillet welded to the pipeline, they can also contain pressure in the event that the defect is leaking or will eventually leak in subsequent service. The applicability of Type A sleeves is nearly identical to that for composite repairs and their installation involves no welding to an in-service pipeline. Type B sleeves can be used where composite repairs cannot, such as for repair of defects that are 80%-deep or greater, circumferentially oriented defects, leaking defects, or for defects that will eventually leak (e.g., internal corrosion), and cracks. For both types of full-encirclement steel sleeve, the raw materials are relatively inexpensive and the stiffness and long-term performance is equivalent to that of line pipe steel. The installation of Type B sleeves does involve the need to weld to an in-service pipeline. Adherence to the simple guidance summarized here will avoid the potential concerns associated with welding to an in-service pipeline.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Steel sleeves vs. composites for in-service pipeline repair


    Contributors:
    Bruce, W.A. (author) / Amend, W.E. (author)

    Published in:

    Publication date :

    2011


    Size :

    6 Seiten, 10 Bilder, 1 Tabelle, 22 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Cable sleeves

    Emerald Group Publishing | 2002


    Forklift safety sleeves

    DOONAN LEIGH ANDREW | European Patent Office | 2017

    Free access

    Equipment protection sleeves

    ARLET ERIK | European Patent Office | 2016

    Free access

    EQUIPMENT PROTECTION SLEEVES

    ARLET ERIK | European Patent Office | 2017

    Free access