Download or read book Radioactive Waste Management Stability and Buffering Capacity of the Geosphere for Long term Isolation of Radioactive Waste Application to Argillaceous Media Clay Club Workshop Proceedings Braun written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stability and Buffering Capacity of the Geosphere for Long term Isolation of Radioactive Waste written by and published by OECD Publishing. This book was released on 2004 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most experts worldwide agree that radioactive waste disposal in engineered facilities, or repositories, located in appropriate formations deep underground, provide a suitable waste management option for protecting humans and the environment now and in the future. An NEA workshop was organised on 9-11 December 2003 in Braunschweig, Germany, devoted specifically to argillaceous settings for deep geological repositories. The workshop brought together scientists from academic institutions, engineers from various research institutions or companies, consultants, regulatory authorities and national waste management organisations to establish the scientific basis for stability and buffering capacity of deep geological waste management systems. The present report synthesises the main outcomes of that workshop and presents a compilation of the related abstracts.
Download or read book Radioactive Waste Management Stability and Buffering Capacity of the Geosphere for Long term Isolation of Radioactive Waste Application to Crystalline Rock written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Radioactive Waste Confinement written by S. Norris and published by Geological Society of London. This book was released on 2017-05-04 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is internationally accepted that the safest and most sustainable option for managing radioactive waste is geological disposal, utilizing both engineering and geology to isolate the waste and contain the radioactivity. This Special Publication contains 25 scientific studies presented at the 6th conference on ‘Clays in natural and engineered barriers for radioactive waste confinement’ held in Brussels, Belgium in 2015. The conference and this resulting volume cover many of the aspects of clay characterization and behaviour considered at various temporal and spatial scales relevant to the confinement of radionuclides in clay, from basic phenomenological process descriptions to the global understanding of performance and safety at repository and geological scales. The papers in this volume consider research into argillaceous media under the following topic areas: large-scale geological characterization; general strategy for clay-based disposal systems; geomechanics; mass transfer; bentonite evolution and gas transfer. The collection of different topics presented in this Special Publication demonstrates the diversity of geological repository research.
Download or read book Radioactive Waste Disposal Into a Plastic Clay Formation written by Marco D'Alessandro and published by Routledge. This book was released on 1981 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technologie, industrie, métiers.
Download or read book Organic Material in Clay based Buffer Materials and Its Potential Impact on Radionuclide Transport written by Peter Vilks and published by Pinewa, Man. : Geochemistry Research Branch, Whiteshell Laboratories. This book was released on 1997 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermo hydrological mechanical Analysis of a Clay Barrier for Radioactive Waste Isolation written by Lakshman Dontha and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The engineered barrier system is a basic element in the design of repository to isolate high level radioactive waste (HLW). In this system, the clay barrier plays a prominent role in dispersing the heat generated from the waste, reduce the flow of pore water from the host rock, and maintaining the structural stability of the waste canister. The compacted expansive clay (generally bentonite blocks) is initially in unsaturated state. During the life time of the repository, the barrier will undergo different coupled thermal, hydrological and mechanical (THM) phenomena due to heating (from the heat-emitting nuclear waste) and hydration (from the saturated host rock). The design of nuclear waste disposal requires the prediction of the long term barrier behavior (i.e. hundred or thousand years), so numerical modeling is a basic component of the repository design. The numerical analyses are performed using mathematical THM formulation and the associated numerical code. Constitutive models are an essential part of the numerical simulations. Those constitutive models represent the intrinsic behavior of the material for the individual physical phenomenon (i.e. thermal, hydraulic and mechanical). Deterministic analyses have shown the potential of such mathematical formulations to describe the physical behavior of the engineered barrier system. However, the effect of the inherent uncertainties associated with the different constitutive models on the global behavior of the isolation system has not been explored yet. The first part of this thesis is related to application of recent probabilistic methods to understand and assess the impact of uncertainties on the global THM model response. Experimental data associated with the FEBEX project has been adopted for the case study presented in this thesis. CODE_BRIGHT, a fully coupled THM finite element program, is used to perform the numerical THM analysis. The second part of this thesis focuses on the complex mechanical behavior observed in a barrier material subjected (during 5 years) to heating and hydration under actual repository conditions The studied experiment is the (ongoing) full scale in-situ FEBEX test at Grimsel test site, Switzerland. A partial dismantling of this experiment has allowed the inspection of the barrier material subjected to varying stresses due to hydration and heating. The clay underwent both elastic and plastic volumetric deformations at different suction and temperature levels with changes in the pre-consolidation pressure and voids ratio that are difficult to explain with conventional models. In this thesis a double structure elasto plastic model is proposed to study the mechanical behavior of this barrier material. The numerical modeling was performed with CODE_BRIGHT. The study shows that the double structure model explains satisfactorily the observed changes in the mechanical behavior of the clay material.
Download or read book Containment of High Level Radioactive and Hazardous Solid Wastes with Clay Barriers written by Raymond N. Yong and published by CRC Press. This book was released on 2017-05-31 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the principal objections to or problems with the use of nuclear fuel is that a proven method for safe disposal of spent nuclear fuel has yet to be established. The central focus of most schemes underway to dispose of these high-level radioactive wastes relies on clay-based buffers and barriers to isolate spent fuel canisters in boreholes deep underground in specially constructed tunnels and caverns. Current thought on the principal methods of containment of high-level radioactive wastes is presented in this book. The authors proceed to discuss the processes and mechanisms involved in the development of long term properties and performance of clay-based buffers and backfills. The procedures and methodologies used to undertake predictions and performance assessments of these materials are also examined. This is an invaluable reference for professionals, researchers, academics and regulators engaged in the development of radioactive waste sites.
Download or read book Characterizing the Geosphere in High level Radioactive Waste Management written by J. F. Sykes and published by . This book was released on 2003 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book PAGIS Performance Assessment of Geological Isolation Systems for Radioactive Waste Disposal in Clay Formations written by J. Marivoet and published by . This book was released on 1988 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Consideration of Environmental Changes in Long term Radioactive Waste Disposal System Evaluations written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Eco architecture III written by Santiago Hernández and published by WIT Press. This book was released on 2010-03-16 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains most of the papers presented in the Eco-Architecture 2010 conference, which was the third edition of the International Conference on Harmonisation between Architecture and Nature. Previous editions, that were very successful were held previously in the New Forest, UK, in 2006 and the Algarve, Portugal in 2008 and demonstrated the importance of a forum like this to discuss the characteristics and challenges of such architectural vision. Eco-Architecture implies a new approach to the design process intended to harmonise its products with nature. This involves ideas such as minimum use of energy at each stage of the building process, taking into account the amount required during the extraction and transportation of materials, their fabrication, assembly, building erection, maintenance and eventual future recycling. Presentations in the conference were related to topics like building technologies, design by passive systems, design with nature, ecological and cultural sensitivity, life cycle assessment, quantifying sustainability in architecture, resources and rehabilitation, and issues from education, research and practice. Case studies from different places around the world were also presented.
Download or read book Agricultural Practices and Water Quality written by Ted L. Willrich and published by . This book was released on 1971 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: SEDIMENT AS A WATER POLLUTANT; PLANT NUTRIENTS AS WATER POLLUTANTS; PESTICIDES AS WATER POLLUTANTS; ANIMAL WASTES AS WATER POLLUTANTS; AGRICULTURAL POLLUTION IMPLICATIONS; AGRICULTURE'S INVOLVEMENT IN POLLUTED AND CLEAN WATER.
Download or read book Disposal of Radioactive Waste written by OECD Nuclear Energy Agency. Performance Assessment Advisory Group and published by Nuclear Energy Agency, Organisation for Economic Co-operation and Development ; Washington, D.C. : OECD Publications and Information Centre. This book was released on 1991 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geomechanics and Geology written by J.P. Turner and published by Geological Society of London. This book was released on 2017-09-19 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geomechanics investigates the origin, magnitude and deformational consequences of stresses in the crust. In recent years awareness of geomechanical processes has been heightened by societal debates on fracking, human-induced seismicity, natural geohazards and safety issues with respect to petroleum exploration drilling, carbon sequestration and radioactive waste disposal. This volume explores the common ground linking geomechanics with inter alia economic and petroleum geology, structural geology, petrophysics, seismology, geotechnics, reservoir engineering and production technology. Geomechanics is a rapidly developing field that brings together a broad range of subsurface professionals seeking to use their expertise to solve current challenges in applied and fundamental geoscience. A rich diversity of case studies herein showcase applications of geomechanics to hydrocarbon exploration and field development, natural and artificial geohazards, reservoir stimulation, contemporary tectonics and subsurface fluid flow. These papers provide a representative snapshot of the exciting state of geomechanics and establish it firmly as a flourishing subdiscipline of geology that merits broadest exposure across the academic and corporate geosciences.
Download or read book Management of Radioactive Wastes from the Nuclear Fuel Cycle written by and published by . This book was released on 1976 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Crustal Permeability written by Tom Gleeson and published by John Wiley & Sons. This book was released on 2016-11-30 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: Permeability is the primary control on fluid flow in the Earth’s crust and is key to a surprisingly wide range of geological processes, because it controls the advection of heat and solutes and the generation of anomalous pore pressures. The practical importance of permeability – and the potential for large, dynamic changes in permeability – is highlighted by ongoing issues associated with hydraulic fracturing for hydrocarbon production (“fracking”), enhanced geothermal systems, and geologic carbon sequestration. Although there are thousands of research papers on crustal permeability, this is the first book-length treatment. This book bridges the historical dichotomy between the hydrogeologic perspective of permeability as a static material property and the perspective of other Earth scientists who have long recognized permeability as a dynamic parameter that changes in response to tectonism, fluid production, and geochemical reactions.
