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This work presents a numerical model of the coupled interactions between temperature profile, electrolytic potential drop, and steady-state oxygen concentration gradient in soils surrounding buried pipelines.
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A research methodology has been employed to quantify the dynamic effects of anodic transients on CP and corrosion by means of an electrochemically integrated multi-electrode array, often referred to as the wire beam electrode (WBE).
There is a growing trend to supplement cathodic protection with Volatile Corrosion Inhibitors (VCI) beneath tank floors. This work is to investigate mutual compatibility and interactions of three different volatile corrosion inhibitors and cathodic protection.
This paper explores the use of remote monitoring systems and web-based data analysis to track corrosion rates in real time.
Several alternating current (AC) coupon test stations (CTS) located near AC power lines were investigated to assess the AC interference corrosion risk of the test coupons. Asstation consisted of two ½ inch (1.27 cm) diameter and 1received each AC test inch (2.54 cm) long carbon steel (CS ) coupons. Coupons are much larger than 1 cm 2 and current density measurements are not 100% relatable to the SP21424 or ISO 18086 criteria, since these refer to measurements on (typically) 1 cm2 . The current densities measured on the coupons in this study will underestimate the AC corrosion threat.
As using underground infrastructures, such as heat transport facilities continues for a long time, damage cases due to corrosion continue to occur. Therefore, it is essential to understand the corrosion behavior of underground metal facilities in terms of safety and economy. Many studies have been conducted on the corrosion of pipeline steels in soil.
Buried steel pipelines operating in soil environments are constantly under threat from corrosion, a phenomenon which jeopardizes their structural integrity and escalates the risk of material degradation, leakage, and subsequent environmental hazards. A holistic understanding of the corrosion process in soil environments is essential for strengthening infrastructural resilience and upholding environmental sustainability.
Corrosion of metals in soils is dictated by a complex confluence of several factors, including aeration, pH, moisture content, ionic composition, electrical resistivity, and microbial activity1.
Stray current refers to electric current that flows elsewhere rather than along its intended path. Stray current is a well-known factor in pipeline maintenance and has been discovered to be an important consideration in communication and electric transmission structure maintenance. Corrosion caused by stray current is frequently many magnitudes greater than corrosion that occurs naturally in soil. Stray current may accelerate corrosion on guy anchors of communication towers and electric transmission towers which could lead to reduced service life or catastrophic failure.
In this paper, stray current corrosion risk for galvanized guy anchors is discussed in detail. Identification by structure-to-soil potential measurements is discussed. Stray current case studies are presented. Overall, this paper demonstrates that while stray current corrosion is a significant risk for guyed telecommunication and electric power structures, it can be detected and mitigated. This paper is an overview of the commonly accepted practices of stray current detection and mitigation used today.