Title: Observables of interest for the characterisation of Spent Nuclear Fuel
Authors: ZEROVNIK GASPERSCHILLEBEECKX PETERGOVERS KEVINBORELLA A.CALIC DUSANFIORITO LUCAKOS BORSTANKOVSKIY A.VAN DEN EYNDE G.VERWERFT M.
Publisher: Publications Office of the European Union
Publication Year: 2018
JRC N°: JRC112361
ISBN: 978-92-79-90347-2
ISSN: 1831-9424
Other Identifiers: EUR 29301 EN
OP KJ-NA-29301-EN-N
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC112361
DOI: 10.2760/418524
Type: EUR - Scientific and Technical Research Reports
Abstract: The characterisation of Spent Nuclear Fuel (SNF) in view of intermediate storage and final disposal is discussed. The main observables of interest that need to be determined are the decay heat, neutron and -ray emission spectra. In addition, the inventory of specific nuclides that are important for criticality safety analysis and to verify the fuel history has to be determined. Some of the observables such as the decay heat and neutron and -ray emission rate can be determined by Non-Destructive Analysis (NDA) methods. Unfortunately, this is not always possible especially during routine operation. Hence, a characterisation of SNF will rely on theoretical calculations combined with results of NDA methods. In this work the observables of interest, also referred to as source terms, are discussed based on theoretical calculations starting from fresh UO2 and MOX fuel. The irradiation conditions are representative for PWR. The Serpent code is used to define the nuclides which have an important contribution to the observables. The emphasis is on cooling times between 1 a and 1000 a.
JRC Directorate:Nuclear Safety and Security

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