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AC corrosion experiments were done on two kinds of typical soil simulants with different contents of (Ca2+), (Mg2+) and (Na+) to study the effects of environmental and cathodic protection parameters on AC corrosion rates.
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Environmentally assisted cracking of high strength nickle based alloys was investigated in 3.5wt% NaCl under cathodic protection.
Laboratory soil-box experiments to understand the effect of specific chemical constituents in soil on corrosion in relation to the AC and DC current densities. A field investigation of AC corrosion on an operational pipeline is also presented.
The present paper presents and discusses the various components contained in an electrical equivalent circuit describing the AC corrosion process from a computer modelling perspective.
This experimental setup includes two samples of buried steel pipes, one provided with an impressed current cathodic protection (ICCP) system and the other left unprotected - in a manipulated artificial environment.
Methodology, observations and analysis of using pulse width modulated (PWM) DC power source rather than a steady state DC power source on a buried pipeline sample.
A 3D computer model estimates CP current distribution in congested areas with coated and uncoated buried pipelines, screwpiles, groundwires and copper groundrods. The model enables design and installation of optimal CP systems for the below grade pipelines.
To evaluate effectiveness of the vapor corrosion inhibitors (VCI) in the cased-crossing application. Specifically, to examine electrochemical properties of 2 commercially available VCIs, and their effect on delivery of cathodic protection current to carrier pipe.
This paper discusses a comparative evaluation of the performance of various types of protective coatings available for the corrosion protection of structural steel components located in marine environments.
This research compares and contrasts NACE TM0115 disbondment test method to ASTM G8, Standard Test Methods for Cathodic Disbonding of Pipeline Coatings...as applied to coatings used in water infrastructure corrosion control.
The gas carrier terminal project is located on the Yamal peninsula on the Arctic Ocean. This quantitative study was to collect field data to define a corrosion protection system for carbon steel submerged structure and to forecast the related corrosion risks.
Cathodic Protection of a 57 km long pipeline section requires a few milliAmps of CP current. A new motorway bridge is built above the pipeline causing a potential risk of shielding the low cathodic current.