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The principal objective of this work is to investigate and understand the TLC inhibition mechanism in the presence of diethylamine (DEA) and morpholine. In order to determine possible interactions between the tested amines and the steel surface, the surface charge was investigated by determining the potential of zero charge (PZC).
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A methodology to visualise the status of assets and support effective implementation of a Corrosion Management System. Based on information collated from Corrosion Risk Assessments, Pipeline Risk Assessments, Risk Based Inspection etc. A flexible tool that allows for instant overview of the assets’ integrity status, without need for extraction of information from engineering departments.
Corrosion in modern paper mills accounts for 30+% of maintenance expenses. Molecular microbiological methods (MMM): • Quantitative polymerase chain reaction (qPCR) and QuantArray were employed to examine MIC at four paper mills each with unique process characteristics and construction materials in the affected areas.
Biocorrosion or microbiologically influenced corrosion (MIC) is a major problem in the oil and gas industry. Biofilms are the culprits of MIC. In this work, D-amino acids were used to enhance two biocides, alkyldimethylbenzylammonium chloride (ADBAC) and tributyl tetradecyl phosphonium chloride (TTPC), to treat a field biofilm consortium on C1018 carbon steel coupons.
Plastic packaging films can be readily impregnated with Vapor Phase Corrosion Inhibitors (VCIs) to provide corrosion protection, in addition to the basic physical barrier afforded by the plastic. VCI-containing plastic films are recyclable. This paper will discuss the benefits of using in-house recycling lines. Improved environmental profile. Better quality. Cost saving.
To ensure the safe operation of a gas processing plant, monitoring the Critical Process Variables (CPV) against the Integrity Operating Window (IOW) is a key element for compliance with the corrosion management framework. This paper is the operator’s experience in setting up the IOW management system in a gas processing plant and benefits gained.
In-situ electrochemical techniques were used to investigate the effect of sulfate-reducing bacteria specie Desulfovibrio alaskensis AL1 colonization and its metabolic products on carbon steel corrosion. Open circuit potential (OCP) measurements showed a slight potential shift toward more positive values appearing just after microbial inoculations.
This study focuses on a better understanding of significant pitting corrosion on coating surface damaged carbon steels, or low alloy steels, during salt spray testing for automotive applications. Anodic cyclic polarization test was used to evaluate the severity of pitting corrosion, and to estimate the corrosion rate of raw materials.
Scale inhibitor squeeze treatments have been applied for many decades to control inorganic scales in onshore/offshore production wells. A series of coreflood tests were conducted with reservoir carbonate cores, This paper presents field results and laboratory evaluation data for the application of corrosion inhibitors via the squeeze process.
Experiments were conducted at a range of temperatures (80 to 170°C) and at vapor pressure at 80°C to 3000 psi at 170°C to review the impact of temperature (and pressure) on three dissolvers. This paper shows that at elevated temperature the classic alkali sulphate dissolver (DTPA) dissolution performance declines significantly at 170°C.
Exhaustive testing has been conducted and reported previously on UNS N06055 in corrosion 2014 paper number 4223. These data support the use of UNS N06055 for nuclear applications where resistance-to-cracking during fabrication and resistance to primary water stress corrosion cracking (PWSCC) in service are of paramount importance.