Abstract
The paper presents the methodology of calculations and technical justification for the use of new equipment. The section of the operating oil pipeline in the part of monitoring of heat engineering processes is considered. The main results of thermo-technical calculations of the pipeline section were described and the aureoles of thawing of the permafrost soil were simulated. As an example for replacement, a multilayer pipe with foamed polyurethane insulation and concrete casing was considered because of its better characteristics compared to the design one.
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