METHOD FOR REPAIR OF DEFECT SECTION OF PIPELINE WITHOUT CHANGE OF MODE OF TRANSPORTATION OF PRODUCT

摘要

The invention relates to repair of pipeline transport, mostly of main high-pressure pipelines. At two sides of defect section of pipeline one installs technological rings on which a sleeve fitting is mounted. The ends of the sleeve are sealed by means of composite band. To cavities between technological rings and respective bands (annular chambers) at ends of the sleeve one presses sealing composition with formation of additional sealing. One performs hydraulic tests of tightness of the sleeve, after that under-sleeve space is filled with self-curing mass, under pressure comparable to pressure in pipeline. For repair of long sections one uses step-by-step installation of the sleeves, at that for connection of neighboring sleeves one uses common composite band.