Provides data for use in assessments of routine discharges of radionuclides to terrestrial and freshwater environments. Some of the data may also be useful for assessing the impacts of accidental releases and releases in the future.

Understanding radionuclide behaviour in the natural environment is essential to the sustainable development of the nuclear industry and key to assessing potential environmental risks reliably. Minimising those risks is essential to enhancing public confidence in nuclear technology. Scientific knowledge in this field has developed greatly over the last decade.Radionuclide behaviour in the natural environment provides a comprehensive overview of the key processes and parameters affecting radionuclide mobility and migration.After an introductory chapter, part one explores radionuclide chemistry in the natural environment, including aquatic chemistry and the impact of natural organic matter and microorganisms. Part two discusses the migration and radioecological behavior of radionuclides. Topics include hydrogeology, sorption and colloidal reactions as well as in-situ investigations. Principles of modelling coupled geochemical, transport and radioecological properties are also discussed. Part three covers application issues: assessment of radionuclide behaviour in contaminated sites, taking Chernobyl as an example, estimation of radiological exposure to the population, performance assessment considerations related to deep geological repositories, and remediation concepts for contaminated sites.With its distinguished editors and international team of expert contributors, Radionuclide behaviour in the natural environment is an essential tool for all those interested or involved in nuclear energy, from researchers, designers and industrial operators to environmental scientists. It also provides a comprehensive guide for academics of all levels in this field. - Provides a comprehensive overview of the key processes and parameters affecting radionuclide mobility and migration - Explores radionuclide chemistry in the natural environment - Discusses the migration and radioecological behaviour of radionuclides

This handbook has been produced in collaboration with the International Union of Radioecologists. It should serve as a convenient and authoritative reference for radionuclide transfer parameter values used in biospheric assessment models. It supplements Safety Series No. 57 (1982), Generic Models and Parameters for Assessing the Environmental Transfer of Radio- nuclides from Routine Releases.

The marine environment, in addition to a not insignificant background of "natural" radioactivity, has continued to receive inputs of radionuclides directly or indirectly through atomic fallout, discharges from the nuclear industry or from nuclear accidents. After their introduction, the fate of these radionuclides is complex with modifications of physicochemical forms, dispersion in marine water masses and adsorption onto sedimentary particles. Marine organisms then bioaccumulate these radionuclides to a greater or lesser extent, dispersing them via their burrowing activities, horizontal and vertical migrations or through food webs. All of these phenomena lead to very variable radioactive contamination, depending on location and the nature of the marine environments concerned, and consequently, to very different doses of irradiation to marine organisms. The harmful effects of ionizing radiation on living marine organisms are felt at varying levels of biological organization from the molecule to the ecosystem, passing through the cell, the organ, the individual and the population. In the end, the radioactive risk for marine organisms can decline according to several situations, which can be normal, programmed or accidental.

A Practical Guide to Understanding, Managing and Reviewing Environmental Risk Assessment Reports provides team leaders and team members with a strategy for developing the elements of risk assessment into a readable and beneficial report. The authors believe that successful management of the risk assessment team is a key factor is quality repor

NATO Advanced Research Workshop "Environmental Protection Against Radioactive Pollution" was held in Almaty on September 16-19, 2002. Experts from Azerbaijan, Denmark, Hungary, Kazakhstan, Kyrgyzstan, Norway, Russia, Tajikistan, Turkey, Ukraine, USA, Uzbekistan and the IAEA have participated and made presentations. The Workshop was organized parallel to the “2nd Eurasia Conference on Nuclear Science and its Application” held in Almaty on September 16-19, 2002 that was organized by Institute of Nuclear Physics of Kazakhstan with Turkish Atomic Energy Authority and National Academy of Science of Azerbaijan, National Academy of Science of Kyrgyzstan, Institute of Nuclear Physics of Uzbekistan. So, the number of participants for the Workshop was rather high. The NATO Advanced Research Workshop generated important interactions and provided a mechanism for scientists of different nations and of varied disciplines to discuss challenges that confront many countries around the world. The reports presented at the Workshop were published in this NATO Science Series. The main directions of the presented reports were as follows; General estimation of the radioactive contamination of the territories and radiation hazardous objects, including former military test sites, areas influenced due to Chernobly and Mayak accidents, and territories of oil fields; Techniques and procedures of radioecological monitoring; Techniques of determination of radionuclide concentrations and its species in the environment.