Forschungs- & Entwicklungsinformationsdienst der Gemeinschaft - CORDIS


Gas generation will occur in a deep geological repository for radioactive waste due to several phenomena, depending on factors such as the nature of the waste, the waste package, container material and the near field. Gas production mechanisms mainly include corrosion of metals, microbial degradation, radiolysis of water and organic components and thermal radiolytic effects in the near field. A range of gases may be produced depending on the materials used and the environmental conditions. Consideration of the mechanisms of gas behaviour in the geosphere has led to the identification of a number of processes that could potentially adversely affect the performance of the geosphere as a barrier and, hence, the safety of a repository. These processes might include effects on groundwater flow, opening of pathways that could subsequently contribute to water-borne contaminant transport and formation of geogas microbubbles to which particulate matter might attach and be transported with the bubbles. The current status of research on gas generation and gas migration in radioactive waste repositories and the results obtained so far were presented at a progress meeting held in Mol, Belgium, in May 1997 and are reported in these proceedings.

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Authors: VALKIAINEN M ET AL, VTT Chemical Technology (FI);NYKIRI M ET AL, Safram Oy, Espoo (FI);HAWORTH A ET AL, AEA Technology, Harwell Laboratory, Didcot, Oxon (GB);MÜLLER W ET AL, ISTec, Köln (DE);ORTIZ L ET AL, SCK/CEN, Mol (BE);JOCKWER N ET AL, Gesellschaft für Reaktorsicherheit mbH, Braunschweig (DE);CLARK K ET AL, QuantiSci Ltd, Henley-on-Thames (GB);PARKER D ET AL, University of Birmingham, School of Physics and Space Research (GB);LOMBARDI S ET AL, Università di Roma la Sapienza, Dipartimento di Scienze della Terra (IT);KNIGHT J L, UK Nirex Ltd, Didcot (GB);PUSCH G ET AL, Technical University Clausthal (DE);BECHTOLD W, FZK/PTE, Karlsruhe (DE);HARRINGTON J ET AL, British Geological Survey, Nottingham (GB);FIORAVANTE V ET AL, ISMES (IT);DELAHAYE C ET AL, Campus Norte-UPC, Barcelona (ES);MULLER W ET AL, ISTec, Koln (DE)
Bibliographic Reference: EUR 18167 EN (1998) 247pp., FS, ECU 43
Availability: Available from the (2)
ISBN: ISBN 92-828-2757-7
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