Search Results for corrosion

...Abstract Marine environments can be very aggressive and present significant challenges in maintaining key infrastructure from the effects of corrosion. In Florida, thousands of bridges are in coastal areas and are continually, or periodically exposed to saltwater conditions. A clear majority...

... of typical uses for these materials that solve problems in varied industries. Background POND was contact by a food processing company to perform a corrosion investigation of existing installed retorts. The retorts are used to disinfect food cans in their operation. The retorts are in two separate banks...

...Abstract Soil-side corrosion of the bottom plates of aboveground storage tanks is the main cause of tank failure in 90% of the storage tanks in the Middle East. Chemical and topographical analysis of the soil revealed high salt content and sinkholes that lead to porous soil structure...

...Abstract Many hangars, shelters and silos used for storage of military weapons systems are several decades old and have started to show signs of aging and corrosion assisted damage of support structures such as steel pipe stays, roofs, support beams, joints, flashings, in addition to rooftops...

...Abstract Internal corrosion of exhaust systems has annoyed the automotive industries for many years. Currently, a diverse range of the severity of the internal corrosion depending on the regions has been recognized. The aim of this study is to understand the causes of the extraordinary corrosion...

... in operation since 2011 without major corrosion issues. Many of the Ni-coated fittings, which are expected to have a service life of 20 years, started to fail (developed leaks) unexpectedly after about 4 years. The core structure of composite pipe is a high-density polyethylene (HDPE) inner pipe, a middle...

... the nozzle and choke body, due to fluid leakage through the thread in imperfect contact. One of the channeling branches crossed the case wall producing leakage, this trajectory being enhanced by defects in the girth weld, inappropriately placed near the thread. Downstream, CO₂ induced corrosion...

... greatly reduced the corrosion risks in amine systems compared to the early monoethanolamine (MEA) systems employed in the 1950s, however, some corrosion risks remain. Corrosion threatens the integrity of plant equipment and places plant personnel at risk of chemical exposure and injury. Downtime, lost...

... being used at various sea depths. Failure analyses were performed to determine the cause of these premature fractures; results indicated that crevice corrosion was the most probable cause. The analyses and key findings are documented in this paper. The observed rate of corrosion is discussed...

...Abstract This case study involves an investigation into corrosion anomalies on a 4 km long NPS 6 liquid pipeline that interconnects two facilities in an urban setting. An in-line inspection (ILI) in 2017 identified 70 external corrosion anomalies, with two of them exceeding 55% wall loss...

...Abstract Under-deposit corrosion represents one of the most damaging forms of corrosion to the piping system in oil and gas pipelines. It is one of the most critical phenomena leading to pipeline failures, and can occur in sub-sea water injection pipelines, well-fluid pipelines, and large diameter...

...Abstract Microbiologically Influenced Corrosion (MIC) occurs in environments where microbial attachment and biofilm formation occurs. The microbial metabolic activities which cause MIC affect materials in a wide variety of industries. Although MIC has not traditionally been a major durability...

...Abstract Literature dating back to the early 1960s has shown that AC current can cause corrosion of cathodically protected steel under laboratory conditions. Until recently however, there has been little evidence to suggest that AC corrosion of cathodically protected structures may be of practical...

...Abstract Corrosion in amine units is fairly complex since it involves various corrosion, erosion and cracking mechanisms and is affected significantly by process parameters and materials of construction. The amine itself is not corrosive, but corrosion is promoted by the following: Dissolved...

... and extensive internal corrosion damage was observed mainly in the form of large isolated pits. Three potential corrosion mitigation options were evaluated: upgrading the tank material from coated carbon steel to 316 stainless steel, installing a non-metallic lining, or keeping using the coated carbon steel...

...Abstract The above ground storage tanks (ASTs) in the refinery is experiencing bottom plate underside (soil) corrosion at an extraordinarily high rate of 1 mm/yr. This has resulted in the failure of four tanks within a period of 9 years since commissioning (2006-2015). The corrosion morphology...

... integrity threats. Such integrity threats ( Figure 2.1 ) vary in nature and origin: Natural disasters Poor operations Enemy activity Effects of the external environment and the internal process fluids (i.e., corrosion, erosion, and cracking) Miscellaneous (e.g., design and mechanical causes...

...Studies to date have identified that the introduction of antibiotics into PMMA bone cement can affect the crevice corrosion initiation and propagation mechanisms of commonly used biomaterials. In this study, five commercially available Poly(methyl methacrylate) PMMA bone cements were tested...