Inverse sensitivity/uncertainty methods development for nuclear fuel cycle applications

G. Arbanas; M. E. Dunn; M. L. Williams

doi:10.1016/j.nds.2014.04.084

Inverse sensitivity/uncertainty methods development for nuclear fuel cycle applications

G. Arbanas, M. E. Dunn, M. L. Williams

Nuclear Data

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1 Scopus citations

Abstract

The Standardized Computer Analyses for Licensing Evaluation (SCALE) software package developed at the Oak Ridge National Laboratory includes codes that propagate uncertainties available in the nuclear data libraries to compute uncertainties in nuclear application performance parameters. We report on our recent efforts to extend this capability to develop an inverse sensitivity/uncertainty (IS/U) methodology that identifies the improvements in nuclear data that are needed to compute application responses within prescribed tolerances, while minimizing the cost of such data improvements. We report on our progress to date and present a simple test case for our method. Our methodology is directly applicable to thermal and intermediate neutron energy systems because it addresses the implicit neutron resonance self-shielding effects that are essential to accurate modeling of thermal and intermediate systems. This methodology is likely to increase the efficiency of nuclear data efforts.

Original language	English
Pages (from-to)	374-377
Number of pages	4
Journal	Nuclear Data Sheets
Volume	118
Issue number	1
DOIs	https://doi.org/10.1016/j.nds.2014.04.084
State	Published - Apr 2014

Funding

Acknowledgements: The authors are indebted to Drs. Brad Rearden, Clayton Webster, Luiz Leal, and Dorothea Wiarda of ORNL for useful discussions. Notice: This abstract has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Funders	Funder number
U.S. Department of Energy

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Inverse sensitivity/uncertainty methods development for nuclear fuel cycle applications

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