| 2006 №03 (08) | 2006 №03 (10) |
The Paton Welding Journal, 2006, #3, 35-37 pages
Extension of service life of a pipeline with defects on the inner surface
P.S. Yukhimets1, S.V. Kobelsky2, V.I. Kravchenko2, I.A. Klimenko2, V.P. Lesovets3
1E.O. Paton Electric Welding Institute of the NASU. 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.2G.S. Pisarenko Institute for Problems of Strength, NASU, Kiev, Ukraine
3Company «Naftogas Ukraini», Kiev, Ukraine
Abstract
The stressed state of a pipeline with volume defects on the inner surface of a pipe was analyzed in terms of different variants of repair operations aimed at extension of remaining life of the pipeline. It is shown that the use of two bands located symmetrically relative to a defect at a distance of the double defect length allows a substantial decrease in stress concentration factor and increase in the remaining life of the pipeline, with the possibility of post-repair monitoring of the defective region.
Keywords: pipeline, corrosion damage, repair, extension of service life, band
References
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