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A Technical Review on cause of corrosion on carbon steel

Rahul Upadhyay


Piping is used in power plants, petrochemical plants and refineries to convey fluids to and from their place of usage and forms an essential part of the operation of the plant. It is advantageous for the student at Fourth Class level to understand the differences between piping requirements for the various fluids concerned, the materials best to be used, commercial pipe sizes, methods of connection and fittings. The challenging environment appearing in recent and moreover future deep offshore explorations promoted the development of line pipe steel grades with reliable sour service resistance. Severe sour conditions such as the combination of elevated production temperature, increasing pipeline pressures and high stress loads initiated by modern laying methods or introduced during service are leading to increasing corrosion demands. Steel pipelines used for the transport of media containing wet Hydrogen Sulphide (H2S) are faced with the danger of the cracking phenomena HIC (Hydrogen Induced Cracking) and SSC (Sulphide Stress Cracking).

Keyword: HIC (Hydrogen Induced Cracking), SSC (Sulphide Stress Cracking), sour service



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