Geological repository

Within SUSEN project a large infrastructure has been developed to support necessary research in the field of nuclear energy. The issue of research focusing on radioactive waste management is mostly carried out in CV REZ Nuclear Fuel Cycle Department where several scientific groups perform their research in four laboratories as follows: (i) laboratory of Nuclear Fuel Reprocessing and Fluoride Chemistry, (ii) Laboratory of Elemental and Isotopic MicroAnalysis , (iii) Laboratory of Rad-waste Management and Chemistry and, (iv) Laboratory of Deep Geological Repository.

The scientific group dealing with geological disposal of high level radioactive waste (HLW) and spent nuclear fuel (SNF) is participating in several projects at both national and international levels. At present, the most significant of those at national level is a preparation of an independent review of safety case expected within licensing process for site approval. As a request of national regulatory body the work is focused in particular on inventory, lifetime of engineered barrier systems and suitability of three disposal concepts considered by implementer; for these purposes the pilot models are developed to allow necessary evaluation of selected site for repository construction.

At an international level, CV REZ participated in EC H2020 Joprad project (Towards a Joint Programming on Radioactive Waste Disposal), ended in November 2017. The project goal was to develop synergies and increase coordination of national research programmes in the field of geological disposal of SNF and HLW at European level according to the Council Directive 2011/70/Euratom.  Based on the main Joprad project output - Programme document, the most relevant research topics supported geological repository safety were identified and proposed for  Joint Programming. The project consortium consisted of WMOs, TSOs and REs together with CS organization; CV REZ contributed to all WPs and in particular, as a WP2 leader contributed to the engagement and commitment Member States in the process of moving towards Joint Programming. 

CV REZ engagement in expertise functions network providing services to national regulatory bodies has been increased by CV REZ participation in the EC H2020 SITEX-II project (Sustainable network for Independent Technical Expertise of radioactive waste disposal - Interactions and Implementation), also ended in November 2017. This project consisted mainly of TSOs and regulatory bodies participants but civil society experts were also involved in the project work. The main goals to which CV REZ as a WP5 leader contributed were as follows: (i) Strategic Research Agenda of TSOs, (ii) Position paper on radiation protection of geological repository, (iii) development of training module for generalist experts performed independent review of safety case, and also (iv) supported an interaction with Civil society experts.

CV REZ representative is a member of Core Group for preparation of European Joint Research Program in the management and disposal of radioactive waste as identified in Euratom Work Programme 2018.

An integral part of CV REZ activities related to a geological repository development at national level is an experimental work performed in CV REZ laboratories. These experiments had been identified as a significant ones within SUSEN project preparation and now when all necessary laboratories are finally equipped they are performed in the project second phase. To support generation exchange in the nuclear field, young scientists are permanently recruited to extend CV REZ research team.


Jitka Miksova, CV REZ