Tests, field use support compression sleeve for seam-weld repair

Workers apply the parts of the steel compression sleeve over a section of the Platte pipeline.Click here to enlarge imageFirst US use of a steel compression sleeve for pipeline repair confirmed nearly 7 years of Canadian and Mexican experience that the method can permanently repair longitudinal defects on an operating pipeline. The method is nonintrusive and requires no welding to the carrier pipe. In comparison with a Type B sleeve, which relies on tapping through the pipe and the sleeve to reduce hoop stress, the steel sleeve applies compression to the carrier pipe to reduce the hoop stress and prevent crack growth.Evaluation of the sleeve included measuring mechanical properties of t...

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