Development of a Kinetic Model to Predict the Rate of Oxidation and Dissolution of Nuclear Fuel (UO@) by the Radiolysis of Water
Development of a Kinetic Model to Predict the Rate of Oxidation and Dissolution of Nuclear Fuel (UO@) by the Radiolysis of Water

Author: H. Christensen

Publisher: Pinewa, Man. : Whiteshell Laboratories

Published: 1994

Total Pages: 44

ISBN-13:

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Radiolysis of groundwater would produce oxidants and reductants that could affect the oxidation and dissolution of used fuel (UO2) placed in a geological disposal vault. To avoid the extensive experimentation involved, a kinetic model originally proposed by Christensen and Bjergbakke to predict the rate of UO2 dissolution induced by water radiolysis is being refined. This report summarizes the understanding of the mechanisms of oxidation and dissolution of UO2 as well as other pertinent experimental results used in then of UO2 as well as other pertinent experimental results used in the refinement of the original model. The model and its refinements are described and the rates predicted are presented. These predicted dissolution rates are then compared with the rates determined from the electro-chemical model. The limitations and necessary further developments are then discussed.

State-of-the-art Report on the Progress of Nuclear Fuel Cycle Chemistry
State-of-the-art Report on the Progress of Nuclear Fuel Cycle Chemistry

Author:

Publisher:

Published: 2018

Total Pages: 148

ISBN-13:

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The implementation of advanced nuclear systems requires that new technologies associated with the back end of the fuel cycle are developed. The separation of minor actinides from other fuel components is one of the advanced concepts being studied to help close the nuclear fuel cycle and to improve the long-term effects on the performance of geological repositories. Separating spent fuel elements and subsequently converting them through transmutation into short-lived nuclides should considerably reduce the longterm risks associated with nuclear power generation.

Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste
Geological Repository Systems for Safe Disposal of Spent Nuclear Fuels and Radioactive Waste

Author: Michael J Apted

Publisher: Elsevier

Published: 2010-07-27

Total Pages: 789

ISBN-13: 1845699785

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Geological disposal has been internationally adopted as the most effective approach to assure the long-term, safe disposition of the used nuclear fuels and radioactive waste materials produced from nuclear power generation, nuclear weapons programs, medical, treatments, and industrial applications. Geological repository systems take advantage of natural geological barriers augmented with engineered barrier systems to isolate these radioactive materials from the environment and from future populations.Geological repository systems for safe disposal of spent nuclear fuels and radioactive waste critically reviews the state-of-the-art technologies, scientific methods, regulatory developments, and social engagement approaches directly related to the implementation of geological repository systems.Part one introduces geological disposal, including multiple-barrier geological repositories, as well as reviewing the impact of nuclear fuel recycling practices and underground research laboratory activities on the development of disposal concepts. Part two reviews geological repository siting in different host rocks, including long-term stability analysis and radionuclide transport modelling. Reviews of the range of engineered barrier systems, including waste immobilisation technologies, container materials, low pH concretes, clay-based buffer and backfill materials, and barrier performance are presented in Part three. Part four examines total system performance assessment and safety analyses for deep geological and near-surface disposal, with coverage of uncertainty analysis, use of expert judgement for decision making, and development and use of knowledge management systems. Finally, Part five covers regulatory and social approaches for the establishment of geological disposal programs, from the development of radiation standards and risk-informed, performance-based regulations, to environmental monitoring and social engagement in the siting and operation of repositories.With its distinguished international team of contributors, Geological repository systems for safe disposal of spent nuclear fuels and radioactive waste is a standard reference for all nuclear waste management and geological repository professionals and researchers. - Critically reviews the state-of-the-art technologies, scientific methods, regulatory developments, and social engagement approaches related to the implementation of geological repository systems - Chapters introduce geological disposal and review the development of disposal concepts - Examines long-term stability analysis, the range of engineered barrier systems and barrier performance

Advances in Transport Phenomena
Advances in Transport Phenomena

Author: Liqiu Wang

Publisher: Springer Science & Business Media

Published: 2009-10-15

Total Pages: 250

ISBN-13: 3642026907

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The term transport phenomena is used to describe processes in which mass, momentum, energy and entropy move about in matter. Advances in Transport Phenomena provide state-of-the-art expositions of major advances by theoretical, numerical and experimental studies from a molecular, microscopic, mesoscopic, macroscopic or megascopic point of view across the spectrum of transport p- nomena, from scientific enquiries to practical applications. The annual review series intends to fill the information gap between regularly published journals and university-level textbooks by providing in-depth review articles over a broader scope than in journals. The authoritative articles, contributed by international- leading scientists and practitioners, establish the state of the art, disseminate the latest research discoveries, serve as a central source of reference for fundamentals and applications of transport phenomena, and provide potential textbooks to senior undergraduate and graduate students. The series covers mass transfer, fluid mechanics, heat transfer and thermo- namics. The 2009 volume contains the four articles on biomedical, environmental and nanoscale transports. The editorial board expresses its appreciation to the c- tributing authors and reviewers who have maintained the standard associated with Advances in Transport Phenomena. We also would like to acknowledge the efforts of the staff at Springer who have made the professional and attractive pr- entation of the volume. Serial Editorial Board Editor-in-Chief Professor L. Q. Wang The University of Hong Kong, Hong Kong; lqwang@hku. hk Editors Professor A. R. Balakrishnan Indian Institute of Technology Madras, India Professor A.

Charged Particle and Photon Interactions with Matter
Charged Particle and Photon Interactions with Matter

Author: Yoshihiko Hatano

Publisher: CRC Press

Published: 2010-12-13

Total Pages: 1068

ISBN-13: 1439811806

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Building on Mozumder's and Hatano's Charged Particle and Photon Interactions with Matter: Chemical, Physicochemical, and Biological Consequences with Applications (CRC Press, 2004), Charged Particle and Photon Interactions with Matter: Recent Advances, Applications, and Interfaces expands upon the scientific contents of the previous volume by cover