Nuclear Science

Nuclear Energy Agency

1990-0643 (online)
1990-0651 (print)
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A series of publications from the OECD Nuclear Energy Agency on various aspects of nuclear science. The publications in this series (analytical reports and proceedings) provide research results and technical expertise in basic disciplines such as nuclear and radiation physics, thermal hydraulics, neutronics, fuel chemistry and material science which are needed to maintain a high level of performance and safety and to develop nuclear programmes.

Pyrochemical Separations

Pyrochemical Separations

Workshop Proceedings -- Avignon, France -- 14-16 March 2000 You do not have access to this content

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05 Feb 2001
9789264189737 (PDF) ;9789264184435(print)

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The industrial treatment of spent nuclear fuel is presently performed using different wet chemical processes. Alternative dry processes, using pyrochemical methods, have received some attention due to their potential advantages in terms of plant design and criticality safety, as well as radiation dose.

Recent progress in the transmutation of long-lived fission products and minor actinides has brought renewed interest in pyrochemical methods, as effective transmutation will be based on multi-recycling of the fuel with very high burn-up and short cooling times, conditions under which pyrochemical methods offer various advantages over wet processes.

Studies of pyrochemical processes have so far been carried out at laboratory level. Considerable R&D work is still required in order to upgrade these processes to the current level of industrial aqueous processing.

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Table of Contents

Executive Summary
Welcome Address by C. Madic
Opening Address by Ph. Savelli
Session I. National and International R&D Programmes on Pyrochemical Separations
Research Work on Radionuclide Partitioning from Nuclear Waste Co-Financed by the European Commission by M. Hugon
-Pyrochemical Separations Technologies Envisioned for the US Accelerator Transmutation of Waste System by J. T. Laidler
-Overview of RIAR Activity on Pyroprocess Development and Application to Oxide Fuel and Plans in the Coming Decade by A. V. Bychkov, O.V. Skiba, S. K. Vavilow, M. V. Kormilitzyn, A. G. Osipenco
-BNFL's Molten Salts Programme: Industrialising Processes for Irradiated Fuel by R. Thied, D. Hebditch, P. Parkes, R. Taylor, B. Hanson, and P. Wilson
-Assessment of Pyrochemical Processes for Separation/Transmutation Strategies: Proposed Areas of Research by B.Bo8ullis and Ph. Brossard
Session II. Role and Requirements of Pyrochemical Separations in the Future Fuel Cycles
Role of Pyrochemistry in Advanced Nuclear Energy Generating System by L. Koch
-Pyrochemical Reprocessing Technology and Molten Salt Transmutation Reactor Systems by J. Uhlir
-Actinide Recycling by Pyroprocess for Future Nuclear Cycle System by T. Inoue
-Evaluation of Pyrochemical Reprocessing Technologies for Practical Use by S. Kitawaki, K. Kosugi, M. Fukushima, and M. Myochin
Session III. Part A. Basic Data (Thermodynamics, Reaction Mechanisms, Reaction Kinetics, Molecular Modelling, etc)
Molten Salt Data for Pyrochemistry: New Research Advances and Development of Information System by M> Gaume-Escard, A. K. Adya, L. Rycerz
-Electrochemical Properties of Plutonium in Molten CaCl2-NaCl at 550 Degrees Centigrade by D. Lambertin, J. Lacquement, S. Sanchez, and G. Picard
-Application of Electrochemical Techniques in Pyropartitioning Processes and Reaction Modelling by F. Lantelme, T. Cartailler, P Turq
-Thermodynamic Stabilities of Lanthanides and Actinides in Molten Chloride and Liquid Metal by H. Hamana, J. Sheng, and H. Moriyama
Sesion III. Part B. Results and Experiences form Process Experiments
Results of Demonstration Programme of Electrometallurgical Processing of Breeder Reactor Fuel by G. R. Choppin
-Nitride/Pyroprocess for MA Transmutation and Fundamental Database by T. Ogawa, Y. Arai
-Pyrometallurgical Reduction of Unirradiated TRU Oxides by Lithium in a Lithium Chloride Medium by T.Usami, M. Kurata, T. Inouew, J. Jenkins, H. Sims, S. Beetham, D. Brown
-Small-Scale Demonstration of Pyrometallurgical Processing for Metal Fuel and HLLW by T. Koyama, K. Kinoshita, T. Inoue, M. Ougier, J.-P. Glatz, and L. Koch
-Sutides on the Head-End Steps for Pyrochemical Reprocessing of Oxide Fuels by T. Subramanian, B. Prabhakara Reddy, P. Venkatesh, R. Kandan, T. Vandarkuzhali, K. Nagarajan, P. R. Vasudeva Rao
Session III. Part C. Process Simulation and Process Design
Development of Structural Material and Equipment for Molten Salt Technology by P. Hosnedl, O. Matal
-Kinetics of Pychochemical Processing of Nuclear Materials Using Molten Salt and Liquid Metal by H. Moriyama, H. Yamana, and K. Moritani
-A Rational Approach to Pyrochemical Processes via Thermodynamic Analysis by G. Picard, S. Sanchez, D. Lambertin, and J. Lacquement
Session VI. Open Discussion and Recommendations
Poster Session
Technetium Metal and Pyrometallurgically Formed Sediments: Study and Speciation by Tc NMR and EXAFS/ZANES by K. Guerman, T. Reich, C. Sergeant, R. Ortega, V. Tarasov, and M. Simonoff
-Molten Salt Burner Fuel Behaviour and Treatment by V. V. Ignatiew, R. Ya. Zakirov, K. F.Grebenkine
-Recovery of Noble Metals (Ru, Rh, Pd, Mo) and Tellurium from Fission Products by C. Jouault, M. Alibert, R. Boen, X. Deschanels
-Study of Oxidising Uranium for Pyrochemical Reprocessing by S. Kitawaki, N. Kameshiro, M. Fukushima, and M. Myochin
-Partitioning of Americium Metal from Rare Earth Fission Products by Electrorefining by C. Pernel, M. Ougier, J. P. Glatz, L. Koch, and T. Koyama
-Americium Extraction via In Situ Chlorination of Plutonium Metal by W. A. Punjak, A. J. VArgas, Jr. G. D. Bird, E. Garcia
-Pyro-Oxidation of Plutonium Spent Salts with Sodium Carbonate by G. Bourges, A. Godot, C. Valot, and D. Devillard
-Electrochemical Studies of EuCl3 and EuCl2 in an Equimolar NaCl-KCl Melt by S. A. Kuznetsov, M. Gaune-Escard
-Generalised Perturbation Theory and Source of Information through Chemical Measurements by V. Lelek and and T. Marek
Annex 1. List of Participants
Annex 2. Workshop Organisation
Annex 3. State of the Art Report on Pyrochemical Separations

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