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DTSTART;TZID=Europe/Brussels:20260513T130000
DTEND;TZID=Europe/Brussels:20260513T143000
DTSTAMP:20260418T211049
CREATED:20260320T074436Z
LAST-MODIFIED:20260320T074436Z
UID:123760-1778677200-1778682600@euradschool.eu
SUMMARY:InCoManD webinars on microbial activity | Predicting and Managing Microbial Activity in Deep Geological Repositories
DESCRIPTION:Deep geological repositories (DGRs) evolve through coupled thermal\, hydraulic\, mechanical\, chemical\, and biological processes. Within this multi-barrier system\, microorganisms naturally present in host rocks — as well as those introduced during construction and operation — may induce corrosion\, gas production\, and mineral transformations\, all of which are relevant for predicting the long-term performance and stability of a repository. \nThis session provides a structured introduction to microbiology in the DGR environment\, focusing on safety-relevant processes and their implications for engineered barrier systems. Selected experimental case studies from EPFL will illustrate how microbial activity is investigated under repository-relevant conditions\, with reference to the Swiss repository concept proposed by Nagra. Particular focus will be given to microbial activity during the transient phase\, including decreasing oxygen concentrations and spatial constraints caused by bentonite buffer swelling. \nThe session concludes with a brief overview of how experimental microbiological data can inform and constrain modelling approaches\, and how modelling can\, in turn\, support hypothesis testing and improve understanding of long-term microbial behaviour in DGR systems. \nLearning Outcomes \nUpon completion of this session\, participants should be able to: \nKnowledge \n\nDescribe the origin and potential activity of microorganisms in repository-relevant environments\nExplain key safety-relevant microbial processes\, including corrosion\, gas generation\, and mineral alteration\n\nSkills \n\nRelate experimental observations of microbial activity to repository safety functions\nIdentify critical parameters that control microbial activity in engineered barrier systems\n\n  \nPractical information\nClick here to register.
URL:https://euradschool.eu/event/incomand-webinars-on-microbial-activity-predicting-and-managing-microbial-activity-in-deep-geological-repositories/
LOCATION:Online
CATEGORIES:EURAD webinar
ORGANIZER;CN="EURAD KM":MAILTO:euradmobility@sckcen.be
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BEGIN:VEVENT
DTSTART;TZID=Europe/Brussels:20260518T123000
DTEND;TZID=Europe/Brussels:20260518T140000
DTSTAMP:20260418T211049
CREATED:20260225T073406Z
LAST-MODIFIED:20260225T073406Z
UID:123741-1779107400-1779112800@euradschool.eu
SUMMARY:EURAD-2 Webinar | Domain Insight 3.2.2\, on LL-ILW containers
DESCRIPTION:Abstract\nLow and intermediate level waste (LL&ILW) represent the main part of the volume of radioactive waste which are produced by nuclear industry. This waste contains a large variety of materials such as paper\, cardboard\, plastics and metals with. The waste can also vary strongly in size and weight. Therefore\, there is a need of various containers designs in order to condition the LL&ILW considering their physical and chemical properties. The main safety functions of a radioactive waste repository for Low Level and Intermediate Level Waste (LL-ILW) are the isolation\, the containment and the shielding of the waste. Other safety functions can also be considered\, such as the retardation of the radionuclide transport and maintaining stable conditions in the repository. The fulfillment of these safety functions relies amongst other on the Engineered Barrier System (EBS). During all the phases of the disposal programme\, from its initiation to the closure of the disposal facility\, safety assessments are performed and requirements are defined and updated in order to guarantee the safe management of the radioactive waste (during the operational and post-closure phases of the facility). The requirements for the design of LL-ILW containers are related to those for the disposal facility. The container requirements shall take into account the surrounding Systems Structures and Components (SSC’s)\, as well as the external and internal potential perturbations (e.g. physico-chemical reactions) which could affect them. Depending on the concept of the repository and the defined safety functions and objectives\, various materials such as concrete or steel can be used for manufacturing LL-ILW containers fulfilling the requirements. Such materials are currently used for the containers in various near surface LL-ILW disposal facilities currently in operation in countries such as France (CSA\, Aube)\, the UK (LLWR\, West Cumbria) and Spain (El Cabril\, Cordoba). It shall be noted that LL-ILW can also be disposed in deep geological repository (e.g. Switzerland) \nEURAD-2 – Domain Insight 3.2.2 – LL-ILW containers | Eurad  \nLearning outcomes\nUpon completion of this webinar\, participants should be able to: \n\nUnderstand LL-ILW waste and container design\nExplain the role of containers in:\n\nachieving operational & long-term safety of the disposal system\nachieving interim storage safety and feasible implementation of disposal\n\n\nProvide international examples of LL-ILW containers\nDescribe the lifecycle & implementation phases\nDiscuss challenges & innovations in container design\n\nSpeaker\nRadouane Sghir (Bel V) \nPractical information\nAn MS Teams link will be shared with all registrants a few days before the webinar.
URL:https://euradschool.eu/event/eurad-2-webinar-domain-insight-3-2-2-on-ll-ilw-containers/
LOCATION:Online
CATEGORIES:EURAD webinar
ORGANIZER;CN="EURAD KM":MAILTO:euradmobility@sckcen.be
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Europe/Brussels:20260615T130000
DTEND;TZID=Europe/Brussels:20260615T143000
DTSTAMP:20260418T211049
CREATED:20260320T075004Z
LAST-MODIFIED:20260323T073419Z
UID:123763-1781528400-1781533800@euradschool.eu
SUMMARY:InCoManD webinars on microbial activity | Characterization of Complex/Coupled Biogeochemical Processes at the Metal Canister/Bentonite/Radionuclide Interface in Deep Geological repositories
DESCRIPTION:This talk will examine the role of microorganisms in deep geological repositories (DGRs) for nuclear waste. We will explore who these microbes are\, how they survive in extreme environments\, and how their activity affects the safety of the repository over thousands of years. \n\nMicrobial Diversity: the key groups of bacteria\, fungi\, and archaea found in engineered barriers (like bentonite clay) and the surrounding host rock will be identified.\nEnvironmental Limits Microbial survival is restricted by the harsh conditions inside a repository. We will discuss how high temperatures\, radiation\, high clay density\, and changes in water and oxygen levels control whether microbes stay dormant or become active.\nImpact on Repository Safety Microbial activity can change how well the barrier system works. Key topics include:\n\n\nCorrosion: Bacteria causing metal waste containers to rust or degrade.\nGas: Microbes producing gases that could increase internal pressure.\nClay Changes: Biological processes altering the protective properties of bentonite.\nRadionuclide mobility: How microbes can either “trap” radioactive elements (like uranium) through biomineralization or help them move through the environment.\n\n\nFuture Challenges: Finally\, we will highlight the need for more long-term experiments in underground labs to help us better predict how biology will interact with nuclear waste barriers over geological timescales.\n\n  \nLearning Outcomes \nUpon completion of this session\, participants should be able to: \nKnowledge \n-Evaluate how physicochemical stressors—such as radiation\, thermal loads\, high bentonite density\, and shifting redox potentials—limit or stimulate microbial activity \n-Analyze the dual role of microbes in repository performance\, specifically their ability to drive Microbiologically Influenced Corrosion (MIC) versus their capacity for radionuclide immobilization through biomineralization \n-Recognize current knowledge gaps in the “Safety Case” for deep geological repositories and prioritize future research needs for robust long-term modelling. \nSkills \n– Competence in determining the “limits of life” based on physical and chemical constraints. \n-Ability to evaluate the coupled interactions between microbial metabolism and mineralogical changes \n– Proficiency in identifying microbial risks (corrosion\, gas buildup) versus biological benefits (immobilization) within a repository’s safety framework \nPractical information\nClick here to register.
URL:https://euradschool.eu/event/incomand-webinars-on-microbial-activity-characterization-of-complex-coupled-biogeochemical-processes-at-the-metal-canister-bentonite-radionuclide-interface-in-deep-geological-repositories/
LOCATION:Online
CATEGORIES:EURAD webinar
ORGANIZER;CN="EURAD KM":MAILTO:euradmobility@sckcen.be
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