Bilio, M; Brown, S; Fairweather, M; Mahgerefteh, H; IChemE; (2009) CO2 pipelines material and safety considerations. In: Hazards XXI Process Safety and Environmental Protection in a Changing World. (pp. 423 - 429). Institution of Chemical Engineers: London, UK.

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Abstract

This paper presents an overview of some of the most important factors and areas of uncertainty affecting integrity and accurate hazard assessment of CO2 pipelines employed as part of the Carbon Capture and Sequestration (CCS) chain. These include corrosion, hydrate formation, hydrogen embrittlement and propensity to fast running ductile and brittle factures. Special consideration is given to the impact of impurities within the CO2 feed from the various capture technologies on these possible hazards. Knowledge gaps in the modelling of outflow and subsequent dispersion of CO2 following the accidental rupture of pressurised CO2 pipelines, central to their safety assessment, are also presented.

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