Method of and apparatus for shutting down a gas-cooled nuclear r

Details Method of and apparatus for shutting down a gas-cooled nuclear r Method of and apparatus for shutting down a gas-cooled nuclear r

1978-11-30

1981-07-21

Walsh, Donald P.

176 58PB, 176 86L, 176 93BP, G21C 706

Patent

active

042796970

ABSTRACT:
A gas-cooled nuclear reactor whose nuclear-fuel elements are constituted by graphite-encapsulated nuclear fuel particles and have graphite coatings is shut down in accordance with the present invention by introducing into the primary coolant gas circulation, a gadolinium-containing substance which is dispersed in the primary cooling gas before the latter enters the space between the fuel elements within the reactor core so that the gadolinium-containing substance is at least partly deposited on the free graphitic surfaces of the fuel elements.

REFERENCES:
patent: 2953586 (1960-09-01), Hafner
patent: 2987455 (1961-06-01), Huston
patent: 3071605 (1963-01-01), Morehouse
patent: 3757412 (1973-09-01), Mazdiyasni
patent: 4113559 (1978-09-01), Schweiger
Spera, et al., Poison Retention in Reactor Fuses, (NSA 12: 13452), Aug. 1, 17 p.

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