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Surface layers often form on carbon steel surfaces in carbon dioxide (CO2) saturated environments and under certain conditions can offer corrosion protection to the underlying steel. One such layer, magnetite (Fe3O4) is a semiconductor, having a reported electrical resistivity of the order of 10-2 to 10-1 Ω∙cm and band gap of 0.1 eV. The conductive properties of Fe3O4 are of significant importance when understanding the corrosion behaviour of carbon steel, as Fe3O4 can readily establish a galvanic couple with the steel surface upon which it has formed.
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Emergency guideline. Protective coatings for carbon steel and austenitic stainless steel under insulation systems. Systems considered: thin film liquid-applied coatings, fusionbonded coatings, metallizing, and wax-tape coatings. HSITORICAL DOCUMENT 1997
HISTORICAL DOCUMENT. Procedures to design, apply, and inspect fiberglass-reinforced plastic (FRP) linings on the internal bottoms of aboveground storage tanks (ASTs) in the petroleum/petrochemical industry and in other service.
地上碳钢储罐底板用玻璃纤维增强塑料(玻璃钢)衬里 标准 Procedures to design, apply, and inspect fiberglass-reinforced plastic (FRP) linings on the bottom of carbon steel aboveground storage tanks (ASTs).
HISTORICAL DOCUMENT. Stress corrosion cracking (SCC) of carbon and low alloy steels in anhydrous ammonia service. To provide the corrosion engineer with the information to make decisions in individual applications.
HISTORICAL DOCUMENT. Additions to and deviations from NACE SP0294 (formerly RP0294) that apply to alkylation unit spent sulfuric acid storage. These differences between fresh acid and spent sulfuric acid impact the integrity of storage tanks.
HISTORICAL DOCUMENT. Designing, fabricating, and/or maintaining carbon steel equipment and piping that is exposed to caustic environments. Incorporates findings of a 1999 survey as they apply to refinery applications.
This standard practice is intended to provide guidance to those designing, fabricating, and/or maintaining refinery equipment and piping that are exposed to caustic environments.
Caustic is used in many petroleum refinery applications in a wide range of concentrations and temperatures. Caustic stress corrosion cracking (SCC) of carbon steel (CS) equipment has been reported in industry since the 1930s, e.g., in riveted steam boilers. NACE has published guidance for handling sodium hydroxide (NaOH) in the form of a “Caustic Service Chart” since at least the mid-1960s.
Note: This document was originally published with errors in Table B1 , page 26. These identified errors are corrected. Errata sheet is included.
This technical report presents general information on materials commonly used for storing and handling commercial grades of aqueous hydrofluoric acid (AqHF) and anhydrous hydrogen fluoride (AHF). Some materials generally avoided are also discussed. This report is intended for end users, designers, and suppliers of equipment for use with AqHF and AHF. These include, among others, workers in process industry plants, engineering and construction designers, and suppliers of equipment such as pumps, valves, and hoses. This information is useful for initial design and for cost estimates of equipment to handle most commercial AqHF and AHF. The report addresses AqHF and AHF purchased to normal commercial quality that do not contain impurities liable to affect their inherent corrosion characteristics. Testing in the service environment typically indicates a material’s suitability for use with AqHF and AHF. This report does not include all materials that might be resistant and is not intended to limit the consideration and testing of other materials.
Carbon steels and low alloy steels are the workhorse of several industries where properties such as strength, fracture toughness and weldability play a key role. In addition to these properties, carbon steels are also the most cost effective materials is several applications. Of particular interest is the API 5L X65 which is widely used in oil and gas exploration, production and transportation service.
The Hanford Site stores over 50 million gallons (190 million liters) of legacy nuclear process waste that was generated from plutonium separations and waste management processes. This waste, in the form of supernatant liquids, saltcakes, and sludges is contained in large underground storage tanks, up to a million gallons (3.78 million liters) in capacity and lined with carbon steel. The waste was made highly alkaline to ensure passivation of the carbon steel, but it also contains nitrate, in high concentrations, along with fluoride and chloride that poses risks for stress corrosion cracking and pitting corrosion.