Fuel elements based on spherical fuel pellets with a protective coating for enhanced-safety reactors.

Autor: Chernikov, A., Permyakov, L., Fedik, I., Gavrilin, S., Kurbakov, S.
Zdroj: Atomic Energy; Dec1999, Vol. 87 Issue 6, p871-883, 13p
Abstrakt: The principal investigations performed at the Scientific and Industrial Association Luch on the development of fuel elements based on spherical pellets of nuclear fuel with protective ceramic and metallic coatings for HTGR. VVÉR, and other types of reactors are reviewed. The main solutions concerning the construction and technical and materials-science aspects of the fabrication of fuel micropellets, fuel microelements, and fuel elements of different modifications (spherical, rod-shaped) are examined. The characteristics of fuel elements and their components at the fabrication and preliminary and reactor testing stages are presented. It is shown that because of additional protective barriers the fuel elements which have been developed effectively confine the fission products and ensure safety. The directions of possible practical utilization of the fuel elements developed for improved enhanced-safety reactors are described. 7 figures, 6 tables, 42 references. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index