Comprehensive testing in both the laboratory and the field has been completed at independent third-party test facilities. Repair of corrosion damage (to the maximum 80% of wall thickness allowed by US federal regulations 49 CFR parts 192 and 195) has been tested in a series of 10" and 30" pipelines. The capacity of XHab™ for repair of dents has been proved in a PRCI-led study benchmarking 9 different repair products; Pipestream was one of only 3 products to complete the cyclic loading program in all instances. Work is progressing with Stress Engineering Services in Houston on tests to demonstrating the up-rating capabilities of XHab. In all cases, Pipestream has made use of non-linear Finite Element Analysis (FEA) models to calculate and verify the physical performance of structural repairs and rehabilitation.
In addition, the raw materials used in the repair are inspected and tested, both at the point of manufacture and during the preparation phase prior to mobilization. Rigorous QC checks are carried out during the machine application, which by its nature - readily allows for automatic inspection. To request a Testing Summary, please click here.
XHab™ employs three levels of corrosion protection:
- Fusion Bonded Epoxy (FBE) coating is applied to the outside strip in a factory environment, in accordance with Canadian pipeline coating standard Z245.
- Pin brazing of the steel strips to the pipeline at regular intervals, to ensure electrical continuity and protection of the strips using the existing CP system.
- A final (continuous) layer of outer coating (usually a liquid Urethane or epoxy - used for repair or field joint coating) following the operator’s preference.
For more information regarding anti-corrosion performance of XHab, please click here.
Yes. Pipestream have carried out extensive trials with two leading inspection companies, and have found that both the XHab™ repair and the pipe beneath it is inspectable using a combination of axial and spiral MFL. An excellent ILI benchmark can be achieved using these tools which will clearly detect the following: defects in the pipe wall, defects in the pipe wall under multiple XHab™ strips, parting of the XHab™ strips (either on top of, or in the middle of layers of reinforcement).
If you wish to receive a copy of a joint technical paper published on this subject, please click here.
XHab™ is an ideal solution for class change projects, where lowering MAOP, evacuation/hydrotesting, and costly pipe replacement are often the only options. This currently requires a special permit application, but regulators who have seen and understand the XHab™ application have responded favorably.
For more information regarding Pipestream’s progress with the U.S. and State regulatory agencies, click here.
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For more information about Pipestream® Inc., please call +1 281 580 7473 or email us.