Functions of the density distribution, describing the character of changes in the stray current field parameters

Kerimov, A. M.; Spirin, Pavel; Kerimov, R. A.

doi:10.1134/s0033173206060154

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“…In cases where there is a Brought to you by | Bibliotheek TU Delft Authenticated Download Date | 12/11/17 2:40 PM possible corrosion risk due to stray DC interference, the analysis of the situation shall consider electrical properties and the location of the possible source of interference as well as recorded anomalies. As reported (Briglia et al, 1999;Zakowski & Sokólski, 1999;Darowicki & Zakowski, 2004;Kerimov et al, 2006;Zakowski, 2009;Ogunsola et al, 2012;Lelák & Váry, 2013), there are four principal ways to identify stray current interference on pipelines:…”

Section: Monitoring and Evaluation Of Stray Current-induced Corrosionmentioning

confidence: 99%

A review on stray current-induced steel corrosion in infrastructure

2017

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Metallic corrosion can cause substantial damage at various levels and in almost all types of infrastructure. For metallic corrosion to occur, a certain external environment and the presence of corrodents are the prerequisites. Stray current-induced corrosion, however, is a rather underestimated issue in the field of corrosion and civil engineering. Stray current arising from power sources and then circulating in metal structures may initiate corrosion or even accelerate existing corrosion processes. The most frequent sources of stray current are light rail transits and subways, which are also main traffic tools with continuously accelerating urbanization all over the world. Stray currents from these systems may easily flow into nearby metallic structures, making stray current-induced corrosion the most severe form of damage of buried structures, such as tunnels, pipelines, and various underground reinforced concrete structures. The objective of this paper is to critically review stray current-induced steel corrosion in infrastructure with regard to sources of stray current and the characteristics and mechanism of stray current corrosion in view of electrochemical aspects. The methods and techniques for the evaluation, monitoring, and control of stray current-induced corrosion for steel and reinforced concrete structures are also presented and discussed.

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