This report contains the 54th edition of the IAEA’s series of annual reports on operating experience with nuclear power plants in Member States. It is a direct output from the IAEA’s Power Reactor Information System (PRIS) and contains information on electricity production and overall performance of individual plants during 2022. In addition to annual information, the report contains a historical summary of performance during the lifetime of individual plants and figures illustrating worldwide performance of the nuclear industry. Design characteristics and dashboards of all operating nuclear power plants worldwide are also presented.

The Country Nuclear Power Profiles (CNPP) provide background information on the status and development of nuclear power programmes of Member States. The CNPP's main objectives are to consolidate information on the nuclear power infrastructure and developments in participating countries, and serve as a resource in effective planning, decision making and implementation of nuclear power programmes that lead to safe and economical operations of nuclear power plants.</br></br>
The CNPP summarizes organizational and industrial aspects of nuclear power programmes and provides information about the relevant legislative, regulatory and international framework in each country. The descriptive and statistical overview of the overall energy and electricity situation in each country and its nuclear power framework are intended to serve as an integrated source of key background information about nuclear power programmes in the world. Statistical data about nuclear plant operations, energy and electricity use are drawn from national contributions and the IAEA's Power Reactor Information System (PRIS), IAEA's Energy Economic Data Base (EEDB) and World Development Indicators (WDI) of the World Bank.</br></br>
The CNPP website is updated continuously, and an annual publication is prepared to provide a high-level overview of programmes in participating Member States. Currently, it contains historical country information for 50 countries, including 30 countries currently operating nuclear power plants, and 20 countries with past or planned nuclear power programmes. The CNPP reports are updated based on information voluntarily provided by participating IAEA Member States. Each of the profiles in this publication is self-standing and contains information officially provided by the respective national authorities.

The ability of the nuclear industry to continue to operate safely, securely and reliably during special circumstances such as a pandemic is essential and depends upon the effectiveness of its preparation, response and recovery plans as well as the ability of relevant organizations to adapt and respond to unforeseen situations. The purpose of this publication is to share experience with regard to managing and regulating facilities and activities during the COVID-19 pandemic, and to assist Member States in considering further actions to improve preparedness and response in relation to the ongoing pandemic and any future ones. The effective sharing of operating and regulatory experience is intended to have a positive influence on the response to, and recovery from, such global events. This publication is therefore written for operating organizations, regulatory bodies, competent authorities, research and technical support organizations, contractors and vendors.

With more than 1900 participants from 141 Member States, four non-Member States and 25 international organizations, the International Conference on Nuclear Security (ICONS 2020) was convened to formulate and exchange views on experiences and achievements, current approaches, future directions and priorities for nuclear security. An outcome of ICONS 2020 was Member States adopting by consensus, a ministerial declaration reaffirming their support for nuclear security. This publication includes the co-presidents’ summary of the conference, the full text of the ministerial declaration, statements from the opening and closing sessions, and an outline of the conference programme. The supplemental files presented with this publication contain the full conference programme, the list of conference participants, the national statements from the ministerial segment, and a selection of papers and presentations.

This report documents the outputs of the INPRO collaborative project "Comparative Evaluation of Nuclear Energy System Options" (CENESO). The overall objectives of CENESO were to apply the approach to comparative evaluation of system/scenario options developed in the previous INPRO collaborative project and published in IAEA Nuclear Energy Series NG-T-3.20. The current publication presents new case studies and elaborates upon previous ones to extend the Key Indicators for Innovative Nuclear Energy Systems (KIND) approach to develop additional modules for enhancing the resolution among compared alternatives. The supplementary online files provide the latest version of the KIND Excel Tool (KIND-ET) and its extensions complete with user instructions.

This publication provides specific recommendations on research reactor instrumentation and control systems and software important to safety, including instrumentation and control system architecture and associated components, from sensors to actuators, operator interfaces and auxiliary equipment, to meet the relevant requirements of IAEA Safety Standards Series No. SSR-3, Safety of Research Reactors. The recommendations and guidance apply to both the design and configuration management of instrumentation and control systems for new research reactors and the modernization of the instrumentation and control systems at existing research reactor facilities. In addition, this Safety Guide provides recommendations and guidance on human factors engineering and human-machine interfaces, and for computer based systems and software for use in instrumentation and control systems important to safety. This Safety Guide is a revision of IAEA Safety Standards Series No. SSG-37, which it supersedes.

This Safety Guide provides practical guidance and recommendations on ageing management for research reactors, to meet the relevant requirements of IAEA Safety Standards Series No. SSR-3, Safety of Research Reactors. It is intended for use by operating organizations in establishing, implementing and improving ageing management programmes for research reactors, and by regulatory bodies in verifying that ageing of research reactors is being effectively managed. The Safety Guide focuses on managing the physical ageing of systems, structures and components important to safety, and also provides guidance on safety aspects of managing obsolescence. This Safety Guide is a revision of IAEA Safety Standards Series No. SSG-10, which it supersedes.

This Safety Guide provides recommendations on radiation protection and radioactive waste management in the design and operation of research reactors, to meet the relevant requirements of IAEA Safety Standards Series No. SSR-3, Safety of Research Reactors. It identifies important components that should be considered at the design stage with regard to facilitating radiation protection and radioactive waste management. It also recommends good practices in implementing operational radiation protection and radioactive waste management programmes, and in their optimization. This Safety Guide is a revision of IAEA Safety Standards Series No. NS-G-4.6, which it supersedes.

This publication presents the results of an IAEA organized intercomparison exercise on codes used in the application of the. Neutron Activation Analysis (NAA) k0 method. NAA is the most common technique implemented in research reactors worldwide. It allows the determination of the elemental composition of samples weighing from micrograms to kilograms. The k0 method for NAA has greatly facilitated the implementation of NAA at new facilities. It allows for the determination of elemental mass fractions, together with their uncertainties, without the need for sample-matched reference materials. As a consequence, various software packages for the application of this method have been developed. In 2021, the IAEA initiated, an intercomparison exercise of k0 software packages, in which the software contributions to the uncertainty budget was determined. The developers of all known k0 software packages were invited to participate, and all but one of the invited packages were represented in the exercise, including the two widely available codes and three codes developed in particular institutes for their own purposes.

Radionuclides of both natural and human made origin exist throughout the environment. These radionuclides can be transferred to plants and animals that are consumed by humans, thereby resulting in exposure to ionizing radiation and an internal radiation dose. This Safety Report provides information on the observed distributions of concentrations of natural radionuclides in various food products, on the use of ‘total diet’ and other studies to assess ingestion doses, and on radionuclide concentrations in natural mineral waters. Different dose assessment methodologies are presented and the advantages and disadvantages of each is discussed, along with approaches used for managing non-radioactive contaminants in food. This publication is jointly sponsored by the IAEA, the Food and Agriculture Organization of the United Nations and the World Health Organization. It is intended to support Member States in the assessment and management of radionuclides in food, and the alignment of national policies with Requirement 51 of IAEA Safety Standards Series No. GSR Part 3, related to radionuclides in food and drinking water.