// Repository Design, Long-term Safety Studies
CHRISTA-II
Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany
Taking into account the legal requirements, a draft for a methodical approach to the safety assessment of repository systems in crystalline rock in Germany was developed. Three possible options for the safe containment of radioactive waste in crystalline rock were considered: disposal in "multiple ewG" (mewG), under an "overlying ewG" (üewG), and in a "modified KBS-3 concept" (mKBS-3). Generic geological site models were developed to reflect possible geological situations in Germany. These models formed the basis for the development of disposal concepts as well as backfilling and sealing concepts. The geological models also served as exemplary applications for the developed safety assessment methodology. A fundamental element of the system analysis is a specific FEP (Feature, Event, Process) catalog, which encompasses all essential repository components and processes, enabling a comprehensive system description. FEP catalogs were developed for all three disposal options. Due to the fractured nature of the crystalline host rock, a newly developed modeling concept is proposed, which combines the advantages of fracture representation in discrete fracture network (DFN) models with those of THM (Thermo-Hydro-Mechanical) continuum modeling on irregular computational grids. Based on the quantified integrity criteria, the exemplary application overall showed that the proposed modeling concept provides a good basis for further analyses. To assess safe containment, the requirements described in § 4 of the EndlSiAnfV (Regulation on Repository Safety Requirements) were specified as indicators and exemplarily applied to the three investigated repository systems.
Contact
Forschung und Entwicklung
info@bge-technology.de
Short Infos
Runtime: 2017 - 2021
Client:
Bundesministerium für Wirtschaft und Energie (BMWi)
Funding Code:
02E11617A
Partner:
Bundesanstalt für Geowissenschaften und Rohstoffe (BGR), Deutschland
Gesellschaft für Anlagen- und Reaktorsicherheit gGmbH (GRS), Deutschland
Publications
// Forschungsbericht
Methodisches Vorgehen zur sicherheitlichen Bewertung von Endlagersystemen im Kristallin in Deutschland. Synthesebericht (Ergebnisbericht)
Author(s): M. Jobmann, V. Burlaka, A. Hassanzadegan, R. León Vargas, A. Lommerzheim, et al.
Language: Deutsch
Publication number: BGE TEC 2021-17
21.12.2021
Jobmann, M.; Burlaka, V.; Hassanzadegan, A.; León Vargas, R. P.; Lommerzheim, A.; et al. (2021): Methodisches Vorgehen zur sicherheitlichen Bewertung von Endlagersystemen im Kristallin in Deutschland. Synthesebericht (Ergebnisbericht). CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. BGE TEC 2021-17. BGE TECHNOLOGY GmbH (BGE TEC), Gesellschaft für Anlagen- und Reaktorsicherheit gGmbH (GRS). Peine
// Forschungsbericht
Analysen zur Integrität von geologischen Barrieren von Endlagersystemen im Kristallin
Author(s): J. Thiedau, et al.
Analysebericht des Forschungsvorhaben CHRISTA II
Language: Deutsch
Publication number: 9Y2017020000
16.12.2021
Thiedau, J.; et al. (2021): Analysen zur Integrität von geologischen Barrieren von Endlagersystemen im Kristallin. Analysebericht des Forschungsvorhaben CHRISTA II. CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. 9Y2017020000. Bundesanstalt für Geowissenschaften und Rohstoffe (BGR). Hannover
// Forschungsbericht
Analysen zur Integrität technischer und geotechnischer Barrieren
Author(s): R. León Vargas, M. Jobmann, D. Seidel, A. Wunderlich
Technischer Bericht
Language: Deutsch
Publication number: BGE TEC 2021-21
30.11.2021
León Vargas, R. P.; Jobmann, M.; Seidel, D.; Wunderlich, A. (2021): Analysen zur Integrität technischer und geotechnischer Barrieren. Technischer Bericht. CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. BGE TEC 2021-21. BGE TECHNOLOGY GmbH (BGE TEC). Peine
// Forschungsbericht
Bewertung des sicheren Einschlusses von Radionukliden in Endlagersystemen im Kristallingestein
Author(s): J. Wolf, et al.
Ergebnisse aus dem Vorhaben CHRISTA-II
Language: Deutsch
Publication number: GRS - 658
30.11.2021
Wolf, J.; et al. (2021): Bewertung des sicheren Einschlusses von Radionukliden in Endlagersystemen im Kristallingestein. Ergebnisse aus dem Vorhaben CHRISTA-II. CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. GRS - 658. Gesellschaft für Anlagen- und Reaktorsicherheit gGmbH (GRS). Braunschweig
// Forschungsbericht
Verfüll- und Verschlusskonzepte für Endlager im Kristallingestein in Deutschland
Author(s): M. Jobmann, V. Burlaka
Technischer Bericht
Language: Deutsch
Publication number: BGE TEC 2021-15
15.09.2021
Jobmann, M.; Burlaka, V. (2021): Verfüll- und Verschlusskonzepte für Endlager im Kristallingestein in Deutschland. Technischer Bericht. CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. BGE TEC 2021-15. BGE TECHNOLOGY GmbH (BGE TEC). Peine
// Poster
Influence of regional flow on fluid flow in bentonite-based drift sealing system
Author(s): V. Burlaka, M. Jobmann
8th International Conference on Clays, Clay Conference 2022 held on 13-16 June 2022 in Nancy, France
Language: Englisch
Publication number: 511
13.06.2022
Burlaka, V.; Jobmann, M. (2022): Influence of regional flow on fluid flow in bentonite-based drift sealing system. 8th International Conference on Clays, Clay Conference 2022 held on 13-16 June 2022 in Nancy, France. CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. 511. BGE TECHNOLOGY GmbH (BGE TEC). Nancy
// Newsletter
BGE TECHNOLOGY NEWS 2022 Q1
Author(s): P. Herold, et al.
First newsletter of BGE TECHNOLOGY GmbH in 2022
- Repository Research in Crystalline Rock – The CHRISTA-II Project
- Rock-mechanical Analyses for the Konrad Repository – Stable Drift Support for Decades
- A New Approach to Using Existing Material Models in any Numerical Code without Implementation
- BGE TECHNOLOGY GmbH advances Norway’s Plans for High-level Radioactive Waste Disposal in Deep Boreholes
Language: Englisch
01.04.2022