Abstract
The article provides examples of critical damage to a long-running gas pipeline on the territory of the Republic of Sakha (Yakutia), which arose as a result of the development of corrosion processes, discusses the mechanisms and scenarios for the development of corrosion damage in the cryolithozone conditions. Considering the processes and mechanisms, they continue for a long period of time., an increase in the number of damages to a gas main pipeline due to corrosive degradation is expected in the near future. The stage of diffuse damage during long-term operation is confirmed by the increasing loss of working capacity due to corrosion damage in the last 25 years of the pipeline operation.
Highlights
The Republic of Sakha (Yakutia) is the largest region in Russia, known for its sharply continental extreme climate, when in summer temperatures reach + 40 ° С and in winter - 60 ° С
The analysis of the causes of emergency situations shows that the main defects in terms of the danger level are: defective construction and installation works; mechanical damage to pipes; defects of materials and structures caused by their long-term operation; corrosion; local corrosion caused by stray currents
Emergency situations that occurred in the conditions of Yakutia as a result of corrosion damage are rare due to the relatively dry climate
Summary
The Republic of Sakha (Yakutia) is the largest region in Russia, known for its sharply continental extreme climate, when in summer temperatures reach + 40 ° С and in winter - 60 ° С. The information on the operation of the pipeline, accumulated for over 50 years in unique climatic conditions, represents a significant value in the development of science and industry. The analysis of the causes of emergency situations shows that the main defects in terms of the danger level are: defective construction and installation works; mechanical damage to pipes; defects of materials and structures caused by their long-term operation; corrosion; local corrosion caused by stray currents. Emergency situations that occurred in the conditions of Yakutia as a result of corrosion damage are rare due to the relatively dry climate. The article provides examples of critical damage to a long-running gas main, which arose as a result of the development of corrosion processes, discusses the mechanisms and scenarios for the development of corrosion damage in the cryolithozone conditions
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