CENTRUM VYZKUMU REZ SRO

Their core work

CVŘ (Research Centre Řež) is a Czech nuclear research facility focused on reactor safety, advanced nuclear materials, and fuel cycle technologies. They conduct experimental testing and simulation work for both current light water reactors and next-generation designs including molten salt reactors, gas-cooled fast reactors, and small modular reactors. Their practical contributions span thermal-hydraulic experiments, material irradiation testing, severe accident analysis, and development of innovative heat removal systems using supercritical CO2. They also work on radioactive waste management, from pre-disposal treatment to geological disposal solutions.

What they specialise in

How they've shifted over time

In the early H2020 period (2014-2018), CVŘ focused on community-building and coordination activities — VVER competence networks, nuclear training programs (CORONA II, VINCO), strategic roadmapping (SPRINT), and foundational thermal-hydraulic research (SESAME, sCO2-HeRo). From 2019 onward, the center shifted decisively toward applied safety engineering and next-generation reactor technology, taking on its first coordinator role in ECC-SMART (small modular reactors) and deepening work on decay heat removal, pre-licensing studies, and concrete ageing management. The portfolio matured from networking and knowledge-sharing toward hands-on experimental and pre-licensing work for advanced reactor designs.

CVŘ is positioning itself as a go-to experimental facility for pre-licensing safety validation of small modular reactors and Generation IV designs, a capability that will be in high demand as these technologies approach deployment in the 2030s.

How they like to work

CVŘ operates almost exclusively as a consortium participant (30 of 32 projects), contributing specialized experimental and analytical capabilities rather than leading large programs. Their single coordinator role — ECC-SMART, also their largest grant at EUR 1.14M — came late in H2020, suggesting growing confidence and visibility. With 411 unique partners across 37 countries, they are a highly connected hub in the European nuclear research ecosystem, comfortable working in large multi-national consortia typical of Euratom-funded research.

With 411 unique consortium partners across 37 countries, CVŘ is one of the most broadly connected nuclear research centers in Europe. Their network spans well beyond the Visegrad region into Western Europe and includes international partners (the ECC-SMART project involves European, Canadian, and Chinese collaboration).

What sets them apart

CVŘ occupies a rare position as a commercially organized research center (s.r.o. = limited liability company) with deep nuclear infrastructure — including proximity to the Řež research reactor complex — operating at the intersection of current reactor safety and next-generation technology development. Their progression from participant to coordinator on SMR technology, combined with sustained sCO2 heat removal expertise across three successive projects, makes them one of few facilities that can offer both experimental infrastructure and licensing-support capabilities for advanced reactor designs. For consortium builders, they bring Central European nuclear regulatory experience and strong ties to the Visegrad nuclear community, a perspective often underrepresented in Western-led projects.

Highlights from their portfolio

• ECC-SMART
  CVŘ's only coordinator role and largest single grant (EUR 1.14M) — an international EU-Canada-China collaboration on small modular reactor technology with supercritical water coolant.
• sCO2-4-NPP
  Represents the culmination of a three-project sCO2 research arc (sCO2-HeRo → sCO2-Flex → sCO2-4-NPP), applying supercritical CO2 heat removal directly to nuclear power plant safety.
• SafeG
  Major safety program for the ALLEGRO gas-cooled fast reactor — CVŘ's largest participation grant (EUR 451K) and central to Czech involvement in Generation IV reactor development.