Coated particle fuel: Historical perspectives and current progress

JOURNAL OF NUCLEAR MATERIALS

卷:515

Review

Demkowicz, Paul A.¹  Liu, Bing²  Hunn, John D.³ 

[1] Idaho Natl Lab, Fuels & Mat Div, POB 1625, Idaho Falls, ID 83415 USA

[2] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, Beijing 100084, Peoples R China

[3] Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA

关键词: Coated particle fuel;    Tristructural isotropic;    TRISO;    High temperature gas cooled reactor;    HTGR;   

DOI  :  10.1016/j.jnucmat.2018.09.044

来源: Elsevier

【 摘 要 】

Coated particle fuel concepts date back some 60 years, and have evolved significantly from the relatively primitive pyrocarbon-coated kernels envisioned by the first pioneers. Improvements in particle design, coating layer properties, and kernel composition have produced the modern tristructural isotropic (TRISO) particle, capable of low statistical coating failure fractions and good fission product retention under extremely severe conditions, including temperatures of 1600 degrees C for hundreds of hours. The fuel constitutes one of the key enabling technologies for high-temperature gas-cooled reactors, allowing coolant outlet temperatures approaching 1000 degrees C and contributing to enhanced reactor safety due to the hardiness of the particles. TRISO fuel development has taken place in a number of countries worldwide, and several fuel qualification programs are currently in progress. In this paper, we discuss the unique history of particle fuel development and some key technology advances, concluding with some of the latest progress in UO2 and UCO TRISO fuel qualification. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

Free