Modeling reactivity insertion experiments of TRISO particles in NSRR using BISON

JOURNAL OF NUCLEAR MATERIALS

卷:530

Article

Schappel, D.¹  Brown, N. R.^1,2  Terrani, K. A.¹ 

[1] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA

[2] Univ Tennessee, Knoxville, TN USA

关键词: NSRR;    TRISO;    BISON;    Reactivity;    Silicon carbide;    Fracture;   

DOI  :  10.1016/j.jnucmat.2019.151965

来源: Elsevier

【 摘 要 】

This research presents BISON simulations of stress, temperature, and failure probability of tristructural isotropic (TRISO) fuel particles subjected to transient power pulse conditions in the Nuclear Safety Research Reactor (NSRR). By modifying the default elastic properties of the PyC and the UO2 coefficient of thermal expansion correlation, BISON was found to produce suitable agreement with the observed and independently simulated results when appropriate shape and scale Weibull parameters for SiC failure were chosen. The Weibull parameter effects were also explored within the range of SiC failure and were applied using experimental data from hemispherical crush testing. Published by Elsevier B.V.

【 授权许可】

Free