| 摘要 |
A method for repair of pipeline sections placed on supports of girder-type bridges without interruption of gas transmission is in disconnection of mounting clamp, lifting pipeline with respect to seat of support, check of state of pipeline section, implementation of repair-and-renewal operations, installation of processed pipeline to seat of support, fixation of pipeline with mounting clamp. Lifting of pipeline is performed by means of equipped with centering unit lift mechanism that is previously mounted on the support of girder-type bridge, at that base of the lift mechanism is fixed to support plate or support and its movable part through stand installed on pipeline out of zone of its processing rests at lower part of pipeline. |
