// 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
Research & Development
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): Michael Jobmann, Victoria Burlaka, Alireza Hassanzadegan, Rocio Paola León Vargas, André Lommerzheim, et al.
Language: Deutsch
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
21.12.2021
// Forschungsbericht
Analysen zur Integrität von geologischen Barrieren von Endlagersystemen im Kristallin
Author(s): Jan Thiedau, et al.
Analysebericht des Forschungsvorhaben CHRISTA II
Language: Deutsch
Thiedau J.; et al. (2021): Analysen zur Integrität von geologischen Barrieren von Endlagersystemen im Kristallin. 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
16.12.2021
// Forschungsbericht
Analysen zur Integrität technischer und geotechnischer Barrieren
Author(s): Rocio Paola León Vargas, Michael Jobmann, David Seidel, Ansgar Wunderlich
Technischer Bericht
Language: Deutsch
León Vargas R. P.; Jobmann M.; Seidel D.; Wunderlich A. (2021): Analysen zur Integrität technischer und geotechnischer Barrieren. 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
30.11.2021
// Forschungsbericht
Bewertung des sicheren Einschlusses von Radionukliden in Endlagersystemen im Kristallingestein
Author(s): Jens Wolf, et al.
Ergebnisse aus dem Vorhaben CHRISTA-II
Language: Deutsch
Wolf J.; et al. (2021): Bewertung des sicheren Einschlusses von Radionukliden in Endlagersystemen im Kristallingestein. 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
30.11.2021
// Forschungsbericht
Quantifizierung von Integritätskriterien für Sicherheitsbewertungen an Kristallinstandor-ten in Deutschland
Author(s): Michael Jobmann, et al.
Technischer Bericht
Language: Deutsch
Jobmann M.; et al. (2021): Quantifizierung von Integritätskriterien für Sicherheitsbewertungen an Kristallinstandor-ten in Deutschland. CHRISTA-II: Development of a safety and verification concept for a repository for heat-generating radioactive waste in crystalline rock in Germany. BGE TEC 2021-14. BGE TECHNOLOGY GmbH (BGE TEC). Peine
15.09.2021
// Forschungsbericht
Verfüll- und Verschlusskonzepte für Endlager im Kristallingestein in Deutschland
Author(s): Michael Jobmann, Victoria Burlaka
Technischer Bericht
Language: Deutsch
Jobmann M.; Burlaka V. (2021): Verfüll- und Verschlusskonzepte für Endlager im Kristallingestein in Deutschland. 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
15.09.2021
// Poster
Influence of regional flow on fluid flow in bentonite-based drift sealing system
Author(s): Victoria Burlaka, Michael Jobmann
8th International Conference on Clays, Clay Conference 2022 held on 13-16 June 2022 in Nancy, France
Language: Englisch
Burlaka V.; Jobmann M. (2022): Influence of regional flow on fluid flow in bentonite-based drift sealing system. 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
13.06.2022