METHOD FOR DETERMINING THE TENSION AND ROUND OF THE REPLACEMENT OF THE PLOTS OF THE LINEAR PART OF THE MAIN PIPELINES Russian patent published in 2018 - IPC F17D1/00 

FIELD: transportation.

SUBSTANCE: invention relates to the main pipeline transport of hydrocarbons, in particular to ensure the reliability of transportation and safe operation of main pipelines through effective planning of work on the overhaul, in particular, determining the length and order of replacement of sections of the linear part of the main pipeline. Essence of the method of determining the length and sequence of replacement of sections of the linear part of the main pipeline is that the sections of the main pipeline are divided into calculated sections of the length of not more than 200 m. Then in-line diagnostics of the calculated section of the main pipeline is carried out, the results of which provide data on the actual thickness of the pipeline walls and the parameters of corrosion defects, predicted value of the relative amount of corrosion on the pipe section is determined for the first year of the period for which the determination of the length and sequence of replacement. For each j settlement area determine the total index K_TCj the technical condition of the main pipeline in the linear section of the main pipeline, the value of the overall priority of replacement of pipes K_j. To determine the length of the replacement sections of the linear part of the main pipeline, the calculated sections of the linear part of the main pipeline, for which K_j not less than K_deputy. To determine the value of K_deputy calculate the sum of the lengths of the pipe sections for the j calculated sections for which K_j not less than set values K_deputy. For each section allocated for replacement, average indicators of replacing a section of the linear part of the main pipeline K_cp,z. are calculated. All areas allocated for replacement are ranked according to the values of the average priority indicator with determining the priority number in descending order, with the priority of replacing the section being carried out in accordance with the priority numbers of each section.

EFFECT: technical result consists in providing the possibility of calculating the length and sequence of replacement of sections of the linear part of main pipelines based on a quantitative assessment of indicators characterizing the technical condition of the pipeline in the linear section of the main pipeline, as well as the potential danger of failure and the systemic significance of main pipeline sections.

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