European Joint Programme on Radioactive Waste Management
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Project annotation:
WP ConCord - The main objective is to evaluate the effect of radioactive radiation on the Ca-Mg bentonite-carbon steel system under anaerobic conditions at temperatures up to 150°C, which correspond to the conditions in a future underground radioactive waste repository. Together with our partners UJV and CVŘ and in collaboration with SÚRAO, we are focusing on the corrosion rate of carbon steel compared to a non-irradiated but identically heated system. Another aim of the project is to demonstrate a reduction in microbially influenced corrosion (MIC) under high stress loading and to assess the ability of natural bentonite bacteria to regenerate from spores after the extreme conditions have passed. Microorganisms with the ability to survive extreme conditions may be involved in MIC and other processes negatively affecting the long-term stability of the repository in a future deep-sea repository.
WP Magic - In this WP, together with partners from CTU and UJV, we are focusing on studying the changes in mechanical and chemical properties of concrete with reduced pH as a function of the background environment (chemical ageing vs. biological ageing) under repository-like conditions during the operational phase (10-30°C). The role of TUL is to evaluate microbial effects. The experiments simulate the contact of concrete structures with the operating environment of a deep repository on the one hand and with bentonite in the presence of groundwater and the natural bentonite microbial community on the other hand. Specifically, we focus on the synergistic effect of ion attack and microbial activity (natural environment) versus the effect of chemistry alone (sterile environment) on the mechanical and chemical properties of concrete under fully saturated conditions. A set of existing samples at PVP Bukov serves as a source of cementitious material with reduced pH.
Project partners:
ARAO - Agencija za radioaktivne odpadke Ljubljana Závod (Slovenia)
BEL V (Belgium)
Bundes – Gesellschaft fur EndlagerungMBH (Germany)
Commissariat à l'énergie atomique et aux énergies alternatives
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT) (Spain)
Public Union Chornobyl Research and Development Institute (Ukraine)
Centre national de la recherche scientifique CNRS (France)
Centrale Organisatie Voor Radioactief Afval (Netherlands)
Valstybinis Moksliniu Tyrimu Institutas Fiziniu Ir Technologijos Mokslu Centras (Lithuania)
Centrum výzkumu Řež s.r.o. SRO (Czech Republic)
Ústav jaderného výzkumu Řež a.s. (Czech Republic)
České vysoké učení technické v Praze (Czech Republic)
Správa úložišť radioaktivních odpadů (Czech Republic)
a další - celkem 51 partnerů projektu a 61 přidružených třetích stran
Main Researcher for TUL
Mgr. Kateřina Černá, Ph.D.
CXI - OABI department - geomicrobiology in deep geological repositories for nuclear waste
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