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This paper will look a data derived from sites that demonstrate this evaluation of soil resistivity and how this data may be applied in other aspects of cathodic protection and pipeline integrity management.
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In this paper, a preliminary study of the effect of intermittent CP has been carried out in order to investigate the effect of a temporary current interruption on the potential monitoring and on the residual corrosion of the metal.
This paper compares planktonic and sessile counts using a variety of testing methods (including culture media, ATP assay and nucleic acid analysis). Data will be presented from a series of case studies including both lab work and field assessments.
This paper reviews corrosion issues encountered as a result of using incompatible construction materials with production chemicals, which eventually lead to multiple failures.
A biocide efficacy study was conducted using field water samples and associated indigenous microorganisms as the test inocula. Thirteen biocide systems were evaluated to determine an excellent choice for disinfecting (rapid kill), to alleviate bio-burden and result in longer term protection.
This study attempted to exemplify the AC mitigation design practice for an urban gas pipeline by numerical calculation, including AC interference risk evaluation, AC mitigation design and mitigation effectiveness assessment.
The Springhouse Country Market and Restaurant has been a local icon for over 40 years. The commercial bakery floor had been covered for years with a commercial sheet vinyl that would fail in spots due to the infiltration of water and cleaning materials at the seams. This resulted in the need to repair the sheet material several times which created a patchwork effect. Finally, the owner reached out to a flooring professional to discuss a new renovation solution.
The goal of this research was to improve the understanding of the mechanisms of cathodic protection (CP) by determining the interactions between corrosion and local chemical parameters, such as pH, under varying CP conditions, both in the absence and presence of MIC.
Measurement and interpretation of cathodic protection data in plant facilities present challenges where mixed metals are electrically continuous with the protected structure. This paper address some of the confusion and important aspects when using coupons for buried piping in mixed-metal circuits.
The use of cathodic protection has become the preferred method for mitigating corrosion of steel reinforcement in concrete. A wide variety of both impressed current and sacrificial systems have been effectively used to control the effects of corrosion.
Due to its success in the ductile iron wastewater pipe market, ceramic epoxy coatings are being increasingly specified and successfully applied on nearly every substrate used for immersion service in both the water & wastewater industry. Some unique characteristics set these epoxy coatings apart from their traditional counterparts. For instance, ceramic epoxy systems provide high-film builds, eliminate undercutting, minimize permeability, provide superior edge retention and form a non-ablative film.
An approach for using Computational Fluid Dynamics in combination with existing corrosion models to calculate corrosion rate. Effect of pH, carbon dioxide partial pressure, temperature, and Reynolds number on ionic species’ flux to the pipe surface was investigated.