The consequences of the radiological and nuclear emergencies may vary from an overexposure of a single person to a transboundary catastrophe with multiple victims and massive radiation contamination. In light of the effort and resources potentially involved in the mitigation, assessment of the radiological consequences during an emergency is a vital stage in the planning and response.

In February 2020, a project was launched at VTT to develop a nuclear district heating plant for the Finnish market. The developed technology is called the Low-Temperature District Heating and Desalination Rector, or LDR.

Finland has two ongoing national research programmes in the nuclear sector: KYT2022 and SAFIR2022. The two research programmes held a joint Interim Seminar in March.

The reactor water level measurement became unreliable during the Fukushima accident. VTT has analyzed the behavior of the measurement system at unit 2.

ALFRED infrastructure was designed as a Research Infrastructure of global relevance on the HLM and LFR technology.

Different concepts for nuclear heavy water reactors fuel bundles were compared and analysed from the thermo-mechanical point of view by using specific computer codes.

Centre for Energy Research (EK) in Budapest, Hungary was designated as the first Collaborating Centre in Nuclear Forensics of the IAEA in 2016 which was prolonged this year till 2025. The Centre provides laboratory, research and training capacity, expertise, and mentoring opportunities together with scientific collaborations in the field of nuclear security.

Accurate prediction of the convective single- and two-phase heat transfer is very important in process and power engineering for safety, reliability, and efficiency. In this aspect, boiling is particularly interesting and complex phenomena, which may significantly enhance the heat transfer from the heated surface to the coolant flow. The detailed understanding of these phenomena is of great importance and, as such, is put under investigation in the THELMA laboratory (Thermal-Hydraulics Experimental Laboratory for Multiphase Applications) at the Reactor Engineering Division at Jožef Stefan Institute (Slovenia).

Ten years after signing its charter on openness to society, IRSN has published a report that summarize its action in this specific domain, between scientific experts and citizens.

Scientists at GRS use a simulation software to calculate the spread of SARS-CoV-2 aerosols. The program was designed to analyse incidents and accidents in containments of nuclear power plants, but has been adapted and validated for corona aerosols.

The ENEEP is an open platform for any European university or European research institute actively involved in education, training, and competence building in the nuclear field.

The ageing and the prolongation live duration of old nuclear power plants is an essential topic in term of safety challenges.

On April 26th the Chernobyl disaster was 35 years ago. How is the situation on the site today? Which works are currently going on? And how is taken care of the radioactive waste?

As one of the tasks in Work Package 4 of the ENEEP project, a search for novel experimental education activities was performed, which resulted in a shortlist of new experiments for possible future implementation and integration in the activities offered by ENEEP. One of the identified new experiments – a Cherenkov radiation-based power meter – was successfully set up at the JSI TRIGA reactor.

IRSN is involved in PERFROI, an international project to complete the safety knowledge in case of a loss of coolant accident.