Unification of technical diagnostic methods of pipeline systems with the purpose of ensuring safe operation

Abstract

The article considers the possibility of applying algorithms and methods of technical
diagnostics and assessment of the residual resource of pipelines that transport energy carriers based
on methods of control and assessment of the technical condition of pipelines of energy equipment.
To confirm the theoretical assumptions, the technical characteristics of the pipeline, which has
hydrogen as an energy carrier, were analyzed, and the stress-strain state of the pipeline was
calculated based on the constructed finite element model of the pipeline section. The calculation of the stress state was carried out for the internal temperature loads of the pipeline at temperatures of
0° and -20°C, which made it possible to identify and evaluate the stresses occurring in the area. As
a result of the conducted research, it was found that the temperature does not have a significant
effect on the state of the pipeline and deviations in the stress distribution. Based on the research
results, a unified system of technical diagnostics methods is proposed based on the typification
system for calculating the residual resource of pipelines under different types of load depending on
temperature and other technological characteristics of pipeline systems based on the developed
technological code. This approach makes it possible to assess the technical condition by choosing
an appropriate calculation method for pipelines of various purposes.