A technique for sub-sea pipeline repair using remote welding without the use of divers has been developed. The technique involves the installation of an oversized pipe segment (sleeve) over the join by threading the pipe ends through the sleeve and performing a sub-sea fillet weld between the pipe and sleeve on each end. Current traditional welding techniques use pipe end butt to butt welding performed with the aid of divers in a habitat and are therefore depth limited. This technique is fully remote controlled and has been proven by simulating conditions in a hyperbaric chamber to work down to at least 2500 msw represented by 250 bar. This paper describes the technique, the structural considerations, and the equipment currently being built to perform this task, which will be in test in the second half of 2004 with sub-sea trials to follow. This paper compliments the paper IPC04-0630 "Diverless underwater GMA welding for pipeline repair using a fillet welded sleeve" (2), in which the welding procedural development is described. When compared with traditional welding or mechanical options (in particular for large pipes), the technique provides a much cheaper repair option.


    Access

    Access via TIB

    Check availability in my library


    Export, share and cite



    Title :

    Deep water remote pipeline repair using welded sleeve technique


    Contributors:


    Publication date :

    2004


    Size :

    5 Seiten, 4 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Tests validate pipeline sleeve repair technique

    Kiefner, J.F. / Maxey, W.A. | Tema Archive | 1989



    Pipeline repair technique cuts downtime

    Bellamy, G. / Jouanneau, J.F. / Quin, R. et al. | Tema Archive | 1985


    Simulation of hydrogen diffusion in a part-size sleeve-on-pipe mock-up for remote pipeline repair welding

    Lindholm, Dag / Fjaer, Hallvard G. / Woodward, Neil | Tema Archive | 2013


    Sleeve puller salvages welded tubes

    Weaver, J. F. | NTRS | 1980