Abstract
The gas pipeline system of PJSC «Gazprom» is at the stage of long-term operation. Most of the pipelines exceed the standard service life of 33 years, while considerable resources are required to maintain the trunk gas pipelines in an efficient state. The article analyzes the defectiveness of gas mains by the example of LLC «Gazprom transgaz Ufa». The company’s gas pipeline system consists of a wide range of diameters pipes ranging from DN 400 to DN 1400 mm. Its structure is dominated by pipelines with a diameter of DN 400, 500, 700, 1400 mm, which share exceeds 86 %. An integral Gini index is proposed for monitoring the differentiation of defects along the length of the line pipe of the main gas pipelines. By the value of the proposed indicator, it is possible to analyze and compare the sections of gas pipelines among themselves, to identify the signs that affect the development of defects along the line pipe of the main gas pipelines.
Highlights
The gas pipeline system of PJSC «Gazprom» is at the stage of long-term operation
The article analyzes the defectiveness of gas mains by the example of LLC «Gazprom transgaz Ufa»
Its structure is dominated by pipelines with a diameter of DN 400, 500, 700, 1400 mm, which share exceeds 86 %
Summary
The gas pipeline system of PJSC «Gazprom» is at the stage of long-term operation. Most of the pipelines exceed the standard service life of 33 years, while considerable resources are required to maintain the trunk gas pipelines in an efficient state. An integral Gini index is proposed for monitoring the differentiation of defects along the length of the line pipe of the main gas pipelines. Выявленные дефекты устраняются для поддержания работоспособности газопроводов. На рисунке 1 приведены сведения о протяженности газопроводов по срокам эксплуатации в % к итогу.
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