NEAMS Experimental Support for Code Validation, INL FY2009

Youinou, G. ; Palmiotti, G. ; Salvatore, M. ; Rabiti, C.

Idaho National Laboratory

关键词: V&;    V Process;    Thermal Hydraulics;    Fast Neutron Reactor;    Reactor Physics;   

DOI  :  10.2172/974762
RP-ID  :  INL/EXT-10-17740
RP-ID  :  DE-AC07-05ID14517
RP-ID  :  974762

美国|英语

来源: UNT Digital Library

【 摘 要 】

The goal is for all modeling and simulation tools to be demonstrated accurate and reliable through a formal Verification and Validation (V&V) process, especially where such tools are to be used to establish safety margins and support regulatory compliance, or to design a system in a manner that reduces the role of expensive mockups and prototypes. Whereas the Verification part of the process does not rely on experiment, the Validation part, on the contrary, necessitates as many relevant and precise experimental data as possible to make sure the models reproduce reality as closely as possible. Hence, this report presents a limited selection of experimental data that could be used to validate the codes devoted mainly to Fast Neutron Reactor calculations in the US. Emphasis has been put on existing data for thermal-hydraulics, fuel and reactor physics. The principles of a new “smart” experiment that could be used to improve our knowledge of neutron cross-sections are presented as well. In short, it consists in irradiating a few milligrams of actinides and analyzing the results with Accelerator Mass Spectroscopy to infer the neutron cross-sections. Finally, the wealth of experimental data relevant to Fast Neutron Reactors in the US should not be taken for granted and efforts should be put on saving these 30-40 years old data and on making sure they are validation-worthy, i.e. that the experimental conditions and uncertainties are well documented.