Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Propagation of Cross-Section Uncertainties in Criticality Calculations in the Framework of UAM-Phase I Using MCNPX-2.7e and SCALE-6.1
Year:2013
Research Areas
  • Engineering
Information
Abstract
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 keff 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 15 × 15 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 keff 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 keff uncertainty.
International
Si
JCR
Si
Title
Science And Technology of Nuclear Installations
ISBN
1687-6075
Impact factor JCR
0,283
Impact info
Volume
2013
http://dx.doi.org/10.1155/2013/380284
Journal number
From page
0
To page
10
Month
SIN MES
Ranking
Participants
  • Autor: Carlos Javier Diez De la Obra (UPM)
  • Autor: Jose Javier Herrero Carrascosa (UPM)
  • Autor: Oscar Luis Cabellos De Francisco (UPM)
  • Autor: Jesus Salvador Martinez Gonzalez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)