Restoration of supporting power of the acting product line with a weakened wall

The product line for the liquified hydrocarbon gases has been studied. The object to be attained is development of the technology of defects welding in the product line wall transporting the liquified hydrocarbon gases using the manual electric-arc welding. The mechanisms of distribution of temperatures during the acting product line welding depending on the welding modes, thermophysical properties of the metal and transferred product, parameters of heat exchange between the pipe wall and transferred product, residual thickness of pipe wall under the defect have been established. The formulas for the destructing pressure in the zone of weakening during welding have been obtained. The rossibility of welding weakenings in the pipe line wall without stopping the transfer using the recommended welding technology providing the technological and operational strength of the restored pipe sections has been provedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio