High temperature reactor with spherical fuel elements

Details High temperature reactor with spherical fuel elements High temperature reactor with spherical fuel elements

1984-12-31

1987-04-14

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Fission reactor material treatment

Impurity removal

376381, G21C 1310

Patent

active

046577327

ABSTRACT:
A barrier system for a high temperature reactor. The reactor utilizes spherical fuel elements consisting of coated particles of a fissionable material embedded in a graphite matrix, the coating forming a first safety barrier against the release of fissionable material, and the graphite matrix a second such safety barrier. The reactor is surrounded by a prestressed concrete pressure vessel clad on the inside with a metal liner. The metal liner acts as a third safety barrier, while the concrete body of the prestressed concrete pressure vessel forms the fourth, and outermost safety barrier. A plurality of passages are located in the pressure vessel which are closed off by closure means. The closure means provide sealment between the third and fourth barriers in the area of the passages. By utilizing the concrete pressure vessel as a safety barrier in this manner, the need for a separate protective reactor housing is eliminated.

REFERENCES:
patent: 2809931 (1957-10-01), Daniels
patent: 3322141 (1967-05-01), Gans, Jr. et al.
patent: 4383969 (1983-05-01), Bleier

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