As part of the challenge to reduce the impact of global warming, pressurised pipelines are considered to be the most practical option for transporting captured CO2 from fossil fuel power plants for subsequent sequestration. A large release from a pipeline transporting fluids between the capture and injection facilities could have major accident potential due to the toxicity of CO2 at high concentration. The European CO2PipeHaz project was concerned with the modelling and validation of source terms and dispersion for potential major releases from CO2 pipelines. This was led by University College London, UCL, (UK) with the other partners being University of Leeds (UK), INERIS (France), GexCon (Norway), Demokritos (Greece), Dalian University of Technology, DUT, (China) and the Health and Safety Laboratory, HSL, (UK). The project's activities included: 1) physical properties and thermodynamic modelling of CO2 with impurities, 2) modelling of pipeline release rates, near field dispersion and far-field dispersion, 3) small- and large-scale experimental validation, 4) decision support tools including: a) QRA with integral modelling, b) Possible methods to account for topography in QRA, and c) The CO2PipeHaz Good Practice Guidelines. This paper describes the CO2PipeHaz Good Practice Guidelines (GPG) from the decision support tools, including setting them in the context of the project. The GPG include discussion of the decision-making required for CO2 pipelines, strategies for the use of decision support tools, existing guidelines for the design of hazardous pipelines, existing guidelines for the design of CO2 pipelines, and the new knowledge developed by the CO2PipeHaz project. An outline strategy is proposed for the use of different methods in decision support. Simpler methods such as QRA incorporating integral modelling should be used for the pipeline as a whole, to screen for pipeline sections with high consequence or risk. The detailed CO2PipeHaz consequence modelling methodology is state-of-the-art and should be considered for application in critically high consequence (or risk) sections of a pipeline.
The CO2PipeHaz Good Practice Guidelines for CO2 pipeline safety
2014
10 Seiten, Quellen
Aufsatz (Konferenz)
Englisch
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