The gas supply network renovation project is divided into four start-up complexes, within which they will replace the entire gas distribution network of the Nornickel production units.
The construction of the first launch complex is underway. The design documentation for the new gas pipeline got a positive conclusion from the Russian Main State Expertize in February 2019, and the construction began in November. The project provides for the replacement of the gas pipeline first string. When constructing a new gas pipeline, pipes with a diameter of 530 to 1020 millimeters are used, it will increase the gas supply throughput to 358 000 cubic meters per hour.
They will also build a new separate corridor, which will ensure timely maintenance. This is important, because the existing technological scheme does not allow disconnecting the gas pipeline to replace heavily worn sections. In addition, some sections of the gas pipeline on the territory of the Nadezhda Metallurgical Plant are located at an altitude of 25-30 meters above the ground level, and there is no access for repair equipment.
The life of the new gas pipeline is 40 years. Thus, the implementation of the project will significantly improve the reliability of gas supply to the enterprises, where a gas supply interruption is unacceptable.
Now a positive conclusion on the design documentation for the second complex launch has been received from the Russian Main State Expertize, and a contractor is being selected. The start of the gas pipelines to the copper and cement plants construction and installation work is scheduled for the first quarter of 2021. The third complex is undergoing design work on the reconstruction of the second gas pipeline backup string to the Nadezhda metallurgical plant, Сombined heat and power plant-3, the peak boiler house and TISMA plant, as well as pipelines to CHP-1 and CHP-2, the construction of which is to be completed in 2024.
Renovation of gas supply networks will increase the reliability and safety of the gas transmission system of Norilsktransgaz.
Text: Victor Tsarev, Photo: Nornickel press office