The natural occurrence of graphite proves its geological stability over long time periods and therefore it could be considered as a matrix for embedding radioactive waste. However its porous structure affects the possible use of graphite as long term stable waste matrix for final disposal. Aqueous phases can penetrate the pore system and radionuclides adsorbed on the surface can be leached. Furthermore slow corrosion in aquatic phases can be induced by high irradiation dose rates in the range of 10−5 to 10−7 gm−2d−1. Therefore radiation induced corrosion process cannot be neglected in geological time scales. These problems can be solved with a graphite material with a closed pore system. A graphite composite material with an inorganic binder has been developed with a density > 99.7% of theoretical density and a negligible porosity. An initial calculation predicts that the life time of the graphite will be at least 2 orders of magnitude higher than porous graphite. This material represents a long term stable leaching resistant matrix applicable for the embedding of irradiated graphite (i-graphite). Natural graphite can be added to improve the compaction behavior and mechanical properties. Additional applications could be the embedding of other radioactive wastes in this matrix.
Skip Nav Destination
ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management
October 3–7, 2010
Tsukuba, Japan
Conference Sponsors:
- Nuclear Engineering Division and Environmental Engineering Division
ISBN:
978-0-7918-5452-5
PROCEEDINGS PAPER
Impermeable Graphite: A New Development for Embedding Radioactive Waste
Johannes Fachinger,
Johannes Fachinger
Furnaces Nuclear Applications Grenoble, Hanau, Germany
Search for other works by this author on:
Karl-Heinz Grosse,
Karl-Heinz Grosse
Furnaces Nuclear Applications Grenoble, Hanau, Germany
Search for other works by this author on:
Milan Hrovat
Milan Hrovat
Hanau, Germany
Search for other works by this author on:
Johannes Fachinger
Furnaces Nuclear Applications Grenoble, Hanau, Germany
Karl-Heinz Grosse
Furnaces Nuclear Applications Grenoble, Hanau, Germany
Richard Seemann
ALD, Hanau, Germany
Milan Hrovat
Hanau, Germany
Paper No:
ICEM2010-40163, pp. 163-169; 7 pages
Published Online:
April 5, 2011
Citation
Fachinger, J, Grosse, K, Seemann, R, & Hrovat, M. "Impermeable Graphite: A New Development for Embedding Radioactive Waste." Proceedings of the ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management. ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 1. Tsukuba, Japan. October 3–7, 2010. pp. 163-169. ASME. https://doi.org/10.1115/ICEM2010-40163
Download citation file:
18
Views
Related Proceedings Papers
Related Articles
Wear Characterization of Al/Ingredients MMFC
J. Tribol (October,2009)
A Novel Methodology for Thermal Analysis of a Composite System Consisting of a Porous Medium and an Adjacent Fluid Layer
J. Heat Transfer (June,2005)
Microstructure and Properties of the Composites: Hydroxyapatite With Addition of Zirconia Phase
J. Eng. Mater. Technol (April,2011)
Related Chapters
Graphite and Carbon-Carbon Composites
Brazing Handbook, Volume 3, 6th Edition
Multiple Smoothing and Morphological Techniques in Radiographic Image Enhancement
International Conference on Computer Engineering and Technology, 3rd (ICCET 2011)
A Review on Prediction over Pressured Zone in Hydrocarbon Well Using Seismic Travel Time through Artificial Intelligence Technique for Pre-Drilling Planing
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)