Comptes Rendus
Du combustible nucléaire aux déchets : recherches actuelles/From nuclear fuels to waste: current research
Long-term performance of spent fuel in geological repositories
Comptes Rendus. Physique, Volume 3 (2002) no. 7-8, pp. 879-889.

The amount of spent fuel generated in Germany up to 2040 has been estimated at 8950 thm. By this time 5500 thm of vitrified high level waste will have accumulated. Both types of waste will be finally disposed of in one underground repository. Potential host rocks are rock salt, granite and mudrock. Up to now several performance assessment studies have been carried out in order to identify the main parameters governing the long-term safety of such repositories. The disposal concepts investigated differ widely in the water content of the rock formations, the engineered barrier systems and the sorption capacities of the various materials.

La quantité de combustible consommé qui sera généré en Allemagne jusqu'en 2040 a été estimée à 8950 thm. À ce moment-là, 5500 thm de déchets vitrifiés de haut niveau auront été accumulés. Les deux types de déchets seront finalement enfouis dans un dépôt souterrain. Les roches-hôtes potentielles sont les roches salifères, le granit et les argilites. Jusqu'à maintenant, plusieurs études de validation de performances ont été réalisées pour identifier les principaux paramètres gouvernant la sûreté à long terme de tels dépôts. On a étudié des modèles de déposition très différents, selon la teneur en eau de la formation rocheuse, les systèmes de barrières développés et les capacités de sorption des divers matériaux.

Received:
Accepted:
Published online:
DOI: 10.1016/S1631-0705(02)01359-2
Keywords: spent fuel disposal, rock salt, granitic rock, backfill, heating experiment, in-situ testing, performance assessment
Mot clés : roche salifère, granit, essais in-situ, validation de performances, carburant consommé

Wernt Brewitz 1; Ulrich Noseck 1

1 Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) mbH, Theodor-Heuss-Strasse 4, 38122 Braunschweig, Germany
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Wernt Brewitz; Ulrich Noseck. Long-term performance of spent fuel in geological repositories. Comptes Rendus. Physique, Volume 3 (2002) no. 7-8, pp. 879-889. doi : 10.1016/S1631-0705(02)01359-2. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/S1631-0705(02)01359-2/

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