Nuclear fuel elements made from nanophase materials

Details Nuclear fuel elements made from nanophase materials Nuclear fuel elements made from nanophase materials

1997-07-28

1998-09-08

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Nonconventional jacket or can material

376427, 376901, G21C 307

Patent

active

058056572

ABSTRACT:
A nuclear reactor core fuel element is composed of nanophase high temperature materials. An array of the fuel elements in rod form are joined in an open geometry fuel cell that preferably also uses such nanophase materials for the cell structures. The particular high temperature nanophase fuel element material must have the appropriate mechanical characteristics to avoid strain related failure even at high temperatures, in the order of about 3000.degree. F. Preferably, the reactor type is a pressurized or boiling water reactor and the nanophase material is a high temperature ceramic or ceramic composite. Nanophase metals, or nanophase metals with nanophase ceramics in a composite mixture, also have desirable characteristics, although their temperature capability is not as great as with all-ceramic nanophase material. Combinations of conventional or nanophase metals and conventional or nanophase ceramics can be employed as long as there is at least one nanophase material in the composite. The nuclear reactor so constructed has a number of high strength fuel particles, a nanophase structural material for supporting a fuel rod at high temperature, a configuration to allow passive cooling in the event of a primary cooling system failure, an ability to retain a coolable geometry even at high temperatures, an ability to resist generation of hydrogen gas, and a configuration having good nuclear, corrosion, and mechanical characteristics.

REFERENCES:
patent: 4978480 (1990-12-01), Stansfield et al.
patent: 5434896 (1995-07-01), Bryan et al.
TRG Report 2627(s)-Refel Silicone Carbide. "The Development of a Ceramic for a Nuclear Engineering Application", By: P. Kennedy & JV Shennan-Oct. 9, 1974.
"Synthesis and PRoperties of Nanophase Ceramics for Technological Applications", Proceedings of the P/M in Aerospace and Defense Technologies Symposium, John C. Parker, published by Metal Powder Industries Federation, Princeton, NJ, 1991, pp. 163-168.

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