Results 221 to 230 of about 8,463 (263)

Detailed characterisations of high burn-up structures in oxide fuels

Journal of Nuclear Materials, 2008
Abstract In this paper, a series of post-irradiation examination results on high burn-up structures (HBS) are summarised for a wide variety of fuels (various programmes on PWR UO2 fuels with different claddings and with or without doping, PWR MOX fuels, FBR fuels, etc.).
J. Noirot, L. Desgranges, J. Lamontagne
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Experience with the neodymium method for determination of nuclear fuel burn up

Journal of Radioanalytical and Nuclear Chemistry Articles, 1984
Individual steps of the neodynium method for burn up determination are discussed. The main attention is paid to neodymium separation from fission products, mass-spectrometric measurement of its isotopic composition, and to the calculation of the burn up results from the measured data. The conclusions were verified on burn up analysis for the irradiated
J. Krtil, F. Sus, V. Bulovič, E. Klosová, Z. Maksimovič   +4 more
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Burn-up credit in criticality safety of PWR spent fuel

Nuclear Engineering and Design, 2014
Abstract The criticality safety calculations were performed for a proposed design of a wet spent fuel storage pool. This pool will be used for the storage of spent fuel discharged from a typical pressurized water reactor (PWR). The mathematical model based on the international validated codes, WIMS-5 and MCNP-5 were used for calculating the effective
Rowayda F. Mahmoud, Mohamed K. Shaat, M.E. Nagy, S.A. Agamy, Adel A. Abdelrahman   +4 more
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Burn-up and Operation Time of Fuel Elements Produced in IPEN

AIP Conference Proceedings, 2011
The aim of this paper is to present the developed work along the operational and reliability tests of fuel elements produced in the Institute of Energetic and Nuclear Research, IPEN‐CNEN/SP, from the 1980’s. The study analyzed the U‐235 burn evolution and the element remain in the research reactor IEA‐R1. The fuel elements are of the type MTR (Material
Julio Benedito Marin Tondin, Tufic Madi Filho, Vito R. Vanin   +2 more
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Monitoring Burn-Up of Spent Fuel Assemblies by Gamma Spectrometry

IEEE Transactions on Nuclear Science, 2013
High-resolution gamma-spectrometry (HRGS) has been used for monitoring burn-up of VVER-440 spent fuel assemblies. The objective is to support burn-up calculations by an independent experimental method. Measurements were carried out using a collimator tube built into the concrete wall of the service pit in the reactor block at the Paks Nuclear Power ...
C. Tam Nguyen, I. Almasi, Z. Hlavathy, J. Zsigrai, L. Lakosi, P. Nagy, T. Parko, I. Pos   +7 more
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Synthesis of Nanostructured Fuels: Mimicking the High Burn-Up Structure

Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Plant Systems, Structures and Components; Codes, Standards, Licensing and Regulatory Issues, 2014
During its lifetime in the core of a nuclear reactor, the fuel undergoes significant changes in its physical, chemical and morphological characteristics. In outer regions of the fuel pellets the so called “high burn-up” or “rim” structure may form. In this region UO2 grains, with an original size of about 10 μm in fresh dense fuel, are reorganized into
Vaclav Tyrpekl, Raquel Jovani-Abril, Michael Holzhäuser   +2 more
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Considerations pertaining to the achievement of high burn-ups in HTR fuel

Nuclear Engineering and Design, 2002
Abstract The satisfactory irradiation performance of coated fuel particles up to burn-ups of, say 10%, has been demonstrated in the past. However, it is shown that some of the most important physical properties of their constituents, which determine this good performance, are only poorly known.
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High burn-up structure of U(Mo) dispersion fuel

Journal of Nuclear Materials, 2016
Abstract The evolution of the high burn-up structure (HBS) in U(Mo) fuel irradiated up to a burn-up of ∼70% 235U or ∼5 × 1021 f/cm3 or ∼120 GWd/tHM is described and compared to the observation made on LWR fuel. Scanning and transmission electron microscopy was performed on several samples having different burn-ups in order to get a better ...
A. Leenaers, W. Van Renterghem, S. Van den Berghe   +2 more
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“Until the Last Ton of Fossil Fuel Is Burned Up”

Abstract Max Weber is not usually considered an ecological theorist, and he is rarely read for his environmental awareness or ecological insights. Yet his thinking about the central problem of capitalism—especially modern “rational” capitalism and its fateful consequences for humanity—contains some intriguing suggestions for such an ...
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Determination of the burn-up in discarded fuel rods

Journal of Nuclear Energy. Parts A/B. Reactor Science and Technology, 1962
A.P. Smirnov-Averin, V.I. Galkov, I.G. Sheinker, V.P. Meshcheryakov, L.A. Stabenova, B.S. Kir'yanov   +5 more
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