New approach to determination of corrosion damage degree of pipeline system elements

Abstract

The relevance and the main aim of the study. The pipeline systems are widely used for supporting the consumers with different kinds of resources. They play the important role in transporting energy materials. The task of reducing the risks of emergency occurrence and decreasing the failures of elements and sections of pipeline systems by early recognition and repair of a defect is very important. The developed technique for determining the location of occurrence of external corrosion sections was tested in relation to the most widespread and split type of pipeline system - heating system, where hydraulic resources transfer over long distances and distribute energy to large areas independently of type of transport medium-such as chilled water, hot water or steam). The methods used in the study. A new approach for determining failure state, based on deterministic models and parameters was used. If this approach is followed it would lead to a deterministic value of failure pressure. However, it is possible to extend this approach into a probabilistic reliability analysis. The results. In order to demonstrate the applicability and usefulness of the above methodology, a typical pipeline with a known corrosion defect was analyzed. This reflects the situation where defects and their characteristics become known through periodic inspections. It must be remembered here that the main purpose of this analysis is to illustrate the method. In the absence of any real example, selection of the numerical values and distribution types of the basic variables of this example pipeline were based on the available relevant information. However, the chosen values are considered to be fairly realistic.

Keywords

• district heating
• electrochemical
• thermal insulation
• defect
• remaining life
• inspection