Impact of different correlation structures in cross-section covariance matrices on the inventory and inventory-related parameters

García Herranz, Nuria and Juan Ruiz, Jesús and Sanz Gonzalo, Javier and Cabellos de Francisco, Oscar Luis (2008). Impact of different correlation structures in cross-section covariance matrices on the inventory and inventory-related parameters. In: "International Conference on the Physics of Reactors “Nuclear Power: A Sustainable Resource” (PHYSOR-2008)", 14/09/2008-19/09/2008, Interlaken, Suiza. ISBN 9783952140956.

Description

Title: Impact of different correlation structures in cross-section covariance matrices on the inventory and inventory-related parameters
Author/s:
  • García Herranz, Nuria
  • Juan Ruiz, Jesús
  • Sanz Gonzalo, Javier
  • Cabellos de Francisco, Oscar Luis
Item Type: Presentation at Congress or Conference (Article)
Event Title: International Conference on the Physics of Reactors “Nuclear Power: A Sustainable Resource” (PHYSOR-2008)
Event Dates: 14/09/2008-19/09/2008
Event Location: Interlaken, Suiza
Title of Book: Proceedings of International Conference on the Physics of Reactors “Nuclear Power: A Sustainable Resource”
Date: 2008
ISBN: 9783952140956
Subjects:
Faculty: E.T.S.I. Industriales (UPM)
Department: Ingeniería Nuclear [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

At present, cross section correlation data are very poorly known. This work can be helpful to evaluate the effort that the international community should devote to the improvement of correlation data for inventory prediction in nuclear systems. Our purpose is to assess the impact of different correlation structures on the uncertainties in relevant fuel cycle and repository parameters, using fixed variances/diagonal values in the cross section covariance matrices. At this stage, only correlation in energy is taken into account, and no correlation among different types of nuclear reactions or different isotopes is considered. To accomplish this goal, the inventory code ACAB is used to estimate the uncertainties in the actinide concentrations of the irradiated fuel, related decay heat and dose (radiotoxicity) in a representative ADS irradiation scenario. It is shown that the nature of the introduced correlations is very relevant to estimate the overall uncertainty in those parameters, and then, the need of more scientifically based correlation data is clearly justified.

More information

Item ID: 3516
DC Identifier: http://oa.upm.es/3516/
OAI Identifier: oai:oa.upm.es:3516
Official URL: http://www.physor2008.ch/
Deposited by: Memoria Investigacion
Deposited on: 30 Mar 2011 08:24
Last Modified: 20 Apr 2016 13:04
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