Bøger af Jean-Claude (University of Nantes Amiard

Once scientists discovered radioactivity, they soon recognized its dangers. However, the assessment of radioactive risk to humans is still the subject of heated debate. In this book, the authors present a summary of past and recent scientific work on estimating radioactivity in the anthroposphere and the radioactive contamination of human beings. They describe the various sources of exposure to ionizing radiation (external, internal and dietary) and estimate the irradiation doses suffered by humans under various conditions (both naturally occurring for the general public and professionals, and from accidents). The harmful effects of ionizing radiation at various biological levels (molecular, cellular and tissue) and health effects at the individual level are also discussed. Particular focus will be placed on radiation-induced occupational illnesses. The relationship between doses of ionizing radiation and its harmful effects is discussed with reference to high, medium and low doses. The controversies on this subject are outlined, and international and French regulatory values are provided. Finally, an estimate of the radioactive risk for humans is suggested.

Following the acquisition of the atomic bomb by five states, the United Nations began drafting several treaties to limit nuclear proliferation. These efforts failed, as four more states also acquired nuclear weapons. In a similar vein, an attempt to limit atomic weapons - primarily within the two superpowers - was initiated.While the number of weapons has decreased, the new bombs now being manufactured are more powerful and more precise, negating any reduction in numbers. In the field of civil nuclear use, all nuclear facilities (reactors, factories, etc.) have a limited lifespan. Once a plant is permanently shut down, these facilities must be decommissioned and dismantled.These operations are difficult, time-consuming and costly. In addition, decommissioning generates large volumes of radioactive waste of various categories, including long-lived and high-activity waste. Risks to the environment and to health are not negligible during decommissioning. The International Atomic Energy Agency (IAEA) and the Nuclear Energy Agency (NEA) of the Organisation for Economic Co-operation and Development (OECD) have produced numerous publications with recommendations. Each state has its own decommissioning strategy (immediate or delayed) and final plan for the site - whether it be returning it to greenfield status or obtaining a nuclear site license with centuries-long monitoring.

The classification of radioactive waste varies from state to state. This results in different management procedures for each country, while following IAEA and OECD/NEA recommendations.Radioactive waste comes from numerous sources. The largest volumes are generated by the decommissioning and dismantling of nuclear facilities. Long-lived, medium- and high-activity waste - categorized as the most hazardous types of waste - are in fact largely produced by nuclear power reactors, spent fuel reprocessing plants and nuclear accidents.Final disposal of very low-activity, low-activity and very short-lived waste is well controlled. However, final solutions for certain categories, including long-lived waste, sorted waste and spent graphite waste, are not yet in place.Management of Radioactive Waste reviews all the possible solutions and presents those chosen by the various states, including a chapter detailing policy on radioactive waste management, taking France as an example.

Detailing the estimation and perception of nuclear risk, this book follows military and civilian nuclear accidents, plus the systems put in place by national and international authorities for recording and analyzing feedback. Prevention and anticipation being the best defenses against a nuclear accident, the authorities have also categorized the different types of accidents, and are doing research to better understand and control them. In light of this, this book shows how the authorities take practical measures to protect neighboring populations and limit radioactive contamination of the environment. France�s experience in this arena is well-documented and a chapter of this book is devoted to the fight against terrorist attacks in the nuclear field. Nuclear Accidents is based on scientifically-recognized publications, as well as on reports from the various countries concerned, and the national and international organizations competent in this field (IAEA, WHO, UNSCEAR, IRSN, etc.).

The peaceful use of atomic energy has given rise to a variety of nuclear accidents from the start. This concerns all forms of use, industrial and medical. For each accident, Industrial and Medical Nuclear Accidents details the contamination of the environment, flora and fauna, and quantifies the effects of ionizing radiation. The book also examines the adverse effects on the health, both physical and mental, of the human populations concerned. The monetary cost is also evaluated. The research presented in this book is based on scientifically recognized publications and on the reports of national and international organizations competent in this field (IAEA, WHO, UNSCEAR, IRSN, etc.). The book contains chapters devoted to the most recent accidents (Chernobyl and Fukushima), with a large body of institutional and academic literature.

The use of atomic energy for military purposes has given rise to a variety of nuclear accidents from the outset. This applies to all levels of use: from the manufacture of weapons to their commissioning. This book provides an overview of the potential impact of such accidents. The prospective consequences of local and global nuclear war are detailed. Similarly, for each accident, the environmental, ecological, health and socio-economic consequences are reviewed. The contamination of the environment and its fauna and flora is detailed and the effects of ionizing radiation are reported. The same is provided for human populations and the adverse effects on the health and physical and mental states of the populations concerned. The economic cost of accidents is also evaluated. The research presented in this book is based on scientifically recognized publications, and reports from the military forces of the various countries concerned and from the national and international organizations competent in this field (IaeA, WHO, UNSCEAR, IRSN, ICPR, etc.).