Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1

Diez de la Obra, Carlos Javier; Herrero Carrascosa, José Javie; Cabellos de Francisco, Oscar Luis y Martínez, J.S. (2013). Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1. "Science and Technology of Nuclear Installations", v. 2013 (n. null); pp. 1-10. ISSN 1687-6075. https://doi.org/10.1155/2013/380284.

Descripción

Título: Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1
Autor/es:
  • Diez de la Obra, Carlos Javier
  • Herrero Carrascosa, José Javie
  • Cabellos de Francisco, Oscar Luis
  • Martínez, J.S.
Tipo de Documento: Artículo
Título de Revista/Publicación: Science and Technology of Nuclear Installations
Fecha: 2013
Volumen: 2013
Materias:
Escuela: E.T.S.I. Industriales (UPM)
Departamento: Ingeniería Nuclear [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In the framework of the OECD/NEA project on Benchmark for Uncertainty Analysis in Modeling (UAM) for Design, Operation, and Safety Analysis of LWRs, several approaches and codes are being used to deal with the exercises proposed in Phase I, “Specifications and Support Data for Neutronics Cases.” At UPM, our research group treats these exercises with sensitivity calculations and the “sandwich formula” to propagate cross-section uncertainties. Two different codes are employed to calculate the sensitivity coefficients of to cross sections in criticality calculations: MCNPX-2.7e and SCALE-6.1. The former uses the Differential Operator Technique and the latter uses the Adjoint-Weighted Technique. In this paper, the main results for exercise I-2 “Lattice Physics” are presented for the criticality calculations of PWR. These criticality calculations are done for a TMI fuel assembly at four different states: HZP-Unrodded, HZP-Rodded, HFP-Unrodded, and HFP-Rodded. The results of the two different codes above are presented and compared. The comparison proves a good agreement between SCALE-6.1 and MCNPX-2.7e in uncertainty that comes from the sensitivity coefficients calculated by both codes. Differences are found when the sensitivity profiles are analysed, but they do not lead to differences in the uncertainty.

Más información

ID de Registro: 26169
Identificador DC: http://oa.upm.es/26169/
Identificador OAI: oai:oa.upm.es:26169
Identificador DOI: 10.1155/2013/380284
URL Oficial: http://www.hindawi.com/journals/stni/2013/380284/
Depositado por: Memoria Investigacion
Depositado el: 19 Ene 2015 16:07
Ultima Modificación: 19 Ene 2015 16:07
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