Carbon fiber composite repair of gas transmission pipeline low carbon and environmental protection in order to eliminate hidden dangers in operation, improve the safety factor of the pipeline and realize scientific management of the pipeline, the maintenance of metal loss points of Shanwu gas transmission pipeline has been carried out in an all-round way recently
Urumqi oil and gas transmission company operating Shanshan Urumqi pipeline found 303 metal loss points in total, including 16 metal loss points exceeding 25% of the normal wall thickness, according to the comprehensive analysis of multiple technologies such as b0.12 deformation detection, magnetic flux leakage detection and corrosion detection, which must ensure that the accumulator pressure is in normal working condition for pipeline pigging
in this maintenance, manual excavation, inspection and verification will be carried out for the 16 metal loss points and the safety hidden danger points such as the damage of Lucaogou anti-corrosion coating, and high-strength carbon fiber materials will be used for maintenance and reinforcementIn 1996, the Shanshan Urumqi gas transmission pipeline was put into operation. Up to now, it has transported more than 7 billion cubic meters of natural gas to Urumqi
as the drop of Shanwu pipeline is up to 1003m, the surface temperature difference is 90 ℃, and the pipeline passes through Huoyanshan, Dabancheng wetland, Lucaogou coal seam collapse area and other areas, the pipeline anti-corrosion measures and safety protection are very important
for the defects of metal loss points outside the pipeline, 170 employees of Urumqi Branch adopt the carbon fiber composite repair method of no pressure reduction, no shutdown and no hot work, which can not only ensure the reasonable allocation of overhaul costs, but also achieve low-carbon and environmental protection
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