In March 2023, the IAEA organized a Technical Meeting on the Safety Approach for Liquid Metal Cooled Fast Reactors [LMFRs] and the Analysis and Modelling of Severe Accidents. This publication summarizes the material that was presented during this meeting, related to the analysis and modelling of severe LMFR accidents. It covers knowledge on the physical phenomena and the development of models and numerical tools, and their validation through experimental data related to the progression of severe accidents. This publication is intended for public and private sector organizations developing LMFRs, research facilities, organizations responsible for designing LMFRs, operators and contractors, including prospective operators, and regulatory bodies.

This publication draws together the experience of Member States in the evaluation, management and remediation of legacy trench sites. It describes the overall process necessary to facilitate such projects. The publication provides the reader with an understanding of how to characterize, assess and potentially remediate such sites as well as providing guidance on management aspects such as decision making and engaging with stakeholders. A key aim is to highlight specific issues associated with these sites, which make them different from other contaminated sites, and to direct the reader to relevant guidance. Case studies to illustrate legacy trench sites, which either have been or are in various stages of assessment and remediation are also presented. Relevant experience and lessons learned for these sites is embedded throughout the publication.

Part of a series to inform nuclear facility designers, vendors, operators and State governments about IAEA safeguards and how associated requirements can be considered early in the design phase of a new nuclear facility, this publication is applicable to the design of radioactive waste management programmes covering both facilities and waste forms. The potential to reduce costs, avoid retrofits and achieve efficiencies, both for the operator and for IAEA Member States, are important drivers for the early consideration of safeguards in the design of a radioactive waste management programme. This early consideration is recommended as radioactive waste management programmes are one of the few places where safeguards on nuclear material may be terminated under certain circumstances. The publication is intended primarily to be of use to waste management professionals for any facilities that handle safeguarded nuclear materials; policy makers responsible for waste management decisions; safeguards professionals involved in the application of safeguards to waste packages and facilities at the State or International level.

Elaborating upon the requirements on periodic safety reviews that are established in IAEA Safety Standards Series No. SSR-4, Safety of Nuclear Fuel Cycle Facilities, this publication aims to provide practical information on conducting the periodic safety review for a nuclear fuel cycle facility by the operating organization, and on the regulatory review and assessment of the periodic safety review. The publication covers the planning and preparation for periodic safety review, use of a graded approach, review of safety factors, global assessment of the safety of the facility and development of an implementation plan to address the findings of the periodic safety review.

This publication provides guidance for developing an effective lessons learned programme to enhance the strategic knowledge management initiatives of nuclear facilities and organizations. Both positive and negative experiences provide opportunities for organizations to learn and improve. These include the experience gained by individuals and teams, through business activities, and from events or incidents (both consequential and non-consequential), as well as industry experience and improvement opportunities derived from external sources. This publication includes case studies from different types of nuclear organizations and supports the development of good practices and successful approaches to lessons learned programmes.

This IAEA Training Course Series publication contains guidelines on a range of non-destructive testing (NDT) techniques applied to the assessment of civil engineering structures. With contributions from renowned experts in the emerging field of NDT for civil structures assessment, this publication provides clear and comprehensive instructions on 20 NDT methods broadly grouped under mechanical, electrical and magnetic, acoustics and radiation methods. It has been developed as a reference for NDT trainers, training organizations, and certification bodies, detailing the subject matter and the content for each level of certification.

The development of a nuclear facility needs careful planning, adequate preparation and substantial investment. This includes the establishment of a legislative and regulatory framework with provisions to assess the adequacy of nuclear security and authorize activities at nuclear facilities at key stages in their lifetimes. This publication provides guidance to regulatory bodies responsible for the nuclear security of nuclear facilities on the authorization process for the operation of such facilities and for related activities. The guidance addresses nuclear security aspects that may require regulatory authorization during different stages in the lifetime of a nuclear facility, identifies the elements included in applications for authorization by the applicant or operator in each of these stages, and provides guidance to the regulatory body on the review and assessment of these applications and on related inspections as a basis for authorization decisions.

This publication captures recent efforts in the development, improvement, validation, and application of severe accident codes for pressurized heavy water reactors (PHWRs), as well as related research and development. It summarises the information from the IAEA Technical Meeting on PHWR Severe Accident Simulation and Modelling that was held virtually on 20–23 September 2022. The information is detailed in terms of the needs and application of severe accident simulation and modelling, regulatory aspects, updates in experimental programmes and in code development, specifically for PHWRs. The publication is intended for professionals from organizations designing, operating or providing services to PHWRs, regulatory bodies, and other technical support organizations involved in severe accident simulation and modelling of PHWRs.

Implementing a chemistry programme is essential to ensure the safe operation of a nuclear power plant. It contributes to the integrity, reliability and availability of structures, systems and components (SSCs) in accordance with their intended design and functions. This revised Specific Safety Guide provides Member States with updated and more detailed guidance for the safe operation of water-cooled nuclear power plants based on current international best practices. This publication is intended for Nuclear Power Plant Chemists, Technical Support Organisations working in water chemistry and corrosion areas, and National Nuclear Safety Regulators doing oversight of NPP water chemistry programmes.

This publication describes the basic principles and elements that will support the development of a national policy and associated strategies on the management of NORM residues and wastes. The basic principles include aspects related to safety, sustainability and circularity and are in line with the relevant IAEA Safety Standards as well as with the UN Sustainable Development Goals (SDGs). The publication also provides insights on key policy elements, such as assignment of regulatory responsibilities; establishment of a national NORM residue and waste inventory, as a basic tool to inform supporting strategies; assurance of infrastructure; funding needs; mechanisms for public participation, and coordination with other related national policies and strategies.