Assessment of Microbially Influenced Corrosion Risk in Slovak Pipeline Transmission Network

Microbial activities are particularly serious in buried natural gas pipelines resulting in high corrosion costs. It is a mater of necessity to deal with this factor during the evaluation of corrosion risk. The objective of this investigation was to determine to what extent the main factors of environment are responsible for biocorrosion behavior in particular transmission pipeline sections running through Slovakia and subsequently evaluate the biocorrosion risk in the studied areas. According to the point method the probability and outcome value of three chosen factors, such as soil characteristics, water presence, and location were determined for each excavation. Two from the monitored excavations in the east of Slovakia and three situated in the south of Slovakia were found to be the most hazardous sites in terms of biocorrosion risk.