This publication complements existing IAEA publications and provides a methodology for evaluating the adequacy of design safety margins against external events based on the performance goals applicable to a nuclear installation. The aim is to provide procedures which can be used to assess if protection against external hazards achieved by the design corresponds to the design safety requirements established after the Fukushima Daiichi accident. It is intended for use by regulatory bodies, designers, operating organizations, vendors, research institutes, and technical support organizations working in the area of nuclear safety.

The IAEA recognizes the importance of food safety to Member States and that laboratories are the fulcrum of a reliable food safety control system, without which, routine testing and monitoring of chemical and related hazards would remain a challenge. The IAEA and the Food and Agricultural Organization of the United Nations (FAO), through the Joint FAO/IAEA Centre of Nuclear Techniques in Food and Agriculture, help scientists to enhance the performance of laboratories and contribute to safeguarding consumer health as well as promoting the market competitiveness of foodstuff such as aquaculture products. Aquaculture is one of the fastest growing food-production sectors in the world and requires urgent attention. This publication presents several analytical methods including an annex of standard operating procedures, for testing residues of chemicals including veterinary drugs and selected contaminants in aquaculture products and production environments. This publication is intended for regulatory as well as research and academic food safety and control institutions.

This revised edition of the IAEA TRS-398 Code of Practice fulfils the need for a systematic and internationally unified approach to the calibration of ionization chambers in terms of absorbed dose to water and to the use of these detectors in determining the absorbed dose to water for the radiation beams used in radiotherapy. It is based on new key data for radiation dosimetry published by the International Commission on Radiation Units and Measurements (ICRU). It contains updated information on new commercially available ionization chambers and addresses the needs of professionals working with newer radiotherapy technologies.

The Coordinated Research Project on Probabilistic Safety Assessment Benchmarks for Multiunit Multi Reactor Sites (2018-2022) brought together the experts from the IAEA Member States with mainly water-cooled reactor technologies to utilize, test and further develop their current or planned probabilistic safety assessments methods and assumptions by conducting and comparing results of meaningful multiunit multi reactor type probabilistic safety assessment (MUPSA) benchmark exercises. The objective was to share national expertise and participate in shared benchmark calculations. These calculations involved the development of MUPSA, based on single unit probabilistic safety assessments available in Member States. This publication is intended for nuclear engineers, researchers, code developers, experimentalists in nuclear energy fields, reactor vendors and developers, university professors and students, regulatory experts, and nuclear power plant planners.

Improved fuel reliability means reduced fuel failures in reactor operation. Fuel failures, with their consequent adverse impact on the environment and requirements for additional waste management, result in costs for remediation, 'failed core' operation and maintenance. Therefore, poor performance of fuel can lead to uncompetitive operational conditions for a nuclear power plant. A revision of the earlier edition, this publication has been significantly extended to support nuclear fuel designers, manufacturers, reactor operators, and fuel engineers and managers on fuel design and design changes, fuel manufacturing, qualification, in-reactor operation, and on-site services to achieve excellence in fuel reliability and performance and safe operation of nuclear fuel under all applicable plant states.

Providing a comprehensive overview of project management for the construction of research reactors, this publication gives guidance to Member States on the best practices that will assist in the realization of that phase of a research reactor deployment project. Member States planning to embark on a research reactor programme together with a nuclear power programme may also refer to this publication to ensure that the approach and methodology for the implementation of both is harmonized, efficient and effective.

Radiation sources used in research and education include particle accelerators, sealed radioactive sources, such as low activity check sources and high activity sealed radioactive sources in irradiators; unsealed radioactive sources that are used as tracers in field work and in laboratory work; naturally occurring radioactive material and X ray generators such as diffraction apparatus and fluorescence analysers. This Safety Guide provides recommendations on how to meet the relevant requirements of IAEA Safety Standards Series No. GSR Part 3 in the use of radiation sources in research and education. It provides guidance on the control of occupational exposure and of public exposure, for planned exposure situations and, where appropriate, emergency exposure situations and on the safety measures specific to this practice. The recommendations in this publication are aimed primarily at operating organizations such as educational and research establishments including schools, colleges, universities and technical institutes that are authorized to use radiation sources in academic programmes, as well as their employees, students, teachers and radiation protection officers. The guidance will also be of interest to individuals working for regulatory bodies and other relevant organizations involved in design, manufacture, supply and service of radiation sources and associated equipment for research and education.

From 2007 to 2012, the IAEA ran a regional project on the ‘Use of Nuclear Techniques to Address the Management Problems of Coastal Zones in the Caribbean Region’, RLA/7/012. The main purpose of the project was to develop and build capacity in the use of nuclear and isotopic methods in order to understand and propose strategies for reducing the degradation of coastal ecosystems and support integrated coastal zone management in the Greater Caribbean region. This guide is a product of project RLA/7/012. It was developed by and for scientists in the region as a guide to the use of sediments to assess current and historical levels of pollution in coastal areas (over roughly the last hundred years) by studying sediment cores dated using the radionuclides <span style="vertical-align: super;">210</span>Pb and <span style="vertical-align: super;">137</span>Cs.

This Safety Guide provides recommendations on the seismic safety evaluation of nuclear installations. It addresses all types of new and existing nuclear installations. This Safety Guide presents three assessment methodologies: the deterministic approach, generally known as seismic margin assessment (SMA), seismic probabilistic safety assessment (SPSA), and a combination of SMA and SPSA known as ‘probabilistic safety assessment (PSA) based SMA. This Safety Guide provides specific recommendations on applying a performance-based graded approach to the seismic safety evaluation of nuclear installations other than nuclear power plants. It also covers the relation between seismic safety margins and defense-in-depth (DiD) level 3 and level 4. For new nuclear installations, this Safety Guide provides recommendations to assess adequacy of seismic margin to avoid cliff edge effects considering DiD level 3 and level 4. This publication is intended for use by regulatory bodies, operating organisations, and designers of nuclear installations.