METHOD FOR CONSTRUCTION OF PIPELINES FOR TRANSPORTATION OF OIL AND/OR LIQUID OIL PRODUCTS, AND/OR GAS-CONDENSATES AND METHOD OF OPERATION, REPAIR AND/OR RECONSTRUCTION, AND/OR RECOVERY OF PIPELINES FOR TRANSPORTATION OF OIL, AND/OR LIQUID OIL PRODUCTS, AND/OR GAS-CONDENSATES

摘要

FIELD: construction. SUBSTANCE: novelty consists in that for establishment of complex of anticorrosive cathodic protection, anode earth electrode, comparison electrode and auxiliary electrode are buried in ground neat, at least, one part of metal and/or metal-containing objects of protection; installed in places corresponding to operating conditions from the point of view of climatic, geographical and geophysical factors is, at least, one converter substation in the form of casing protected from effect of weather and sun rays; electric power and measuring circuits are laid between converter substation and protected object; introduced into the converter substation are limit switches of indicated circuits, boards and panels where units and elements of electrical equipment of converter substation are mounted to form generator of protective potentials, including power unit based on power source of direct current providing supply between protected object and anode earth electrode of difference of protective potentials, control system with functional units including unit of separation of controlled potentials and unit of control and protection and input control unit with switch of, at least, three modes of protection. Ends of indicated circuits are connected with leads of generator of protective potentials of converter substation and their other ends are connected with protected object, anode earth electrode, comparison electrode and auxiliary electrode. Units and elements of generator of protective potentials are interconnected with one another and with circuits to form depending on actual potentials on protected object and both electrodes, protective potential on protected object. Unit of control and protection and, at least, one more unit of control system are mounted on one common panel, and all other units and elements of generator of protective potentials of converter substation, on the other panel. EFFECT: higher reliability of protection from corrosion with simultaneous reduction of volumes of earth work, labor input and material consumption. 93 cl, 15 dwg