Device for emergency removal of the heat dissipated by a fast br

Details Device for emergency removal of the heat dissipated by a fast br Device for emergency removal of the heat dissipated by a fast br

1982-11-16

1986-06-03

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Auxiliary heat removal structure

376405, 165163, G21C 1518

Patent

active

045928886

ABSTRACT:
Device for the emergency removal of the heat dissipated by a fast breeder nuclear reactor when shut down, comprising a liquid-liquid heat exchanger immersed in the vessel of the reactor and a liquid-air exchanger for the cooling of the secondary liquid of the latter exchanger. The liquid-liquid comprises a casing composed of a sleeve (18,19) having openings (21,22) for the natural circulation of the cooling fluid of the reactor in contact with the tubes (25) of a nest (20) disposed in the casing of the exchanger. Each of the tubes (25) includes a straight input section and a long straight return section, separated by a helically wound section forming a loop with a low number of turns, inclined to a small extent with respect to the horizontal plane. The coil diameter of the tubes (25) is constant and identical for all the tubes and very slightly less than the interior diameter of the sleeve (18,19).
The invention applies in particular to liquid sodium-cooled fast breeder nuclear reactors.

REFERENCES:
patent: 3805890 (1974-04-01), Boardman et al.
patent: 4058161 (1977-11-01), Trepaud
patent: 4083695 (1978-04-01), Haese et al.
patent: 4163470 (1979-08-01), Johnsen et al.
patent: 4294659 (1981-10-01), Campbell
patent: 4296799 (1981-10-01), Steele
patent: 4312703 (1982-01-01), Wondstra
patent: 4336614 (1982-06-01), Mitchell et al.
patent: 4342721 (1982-08-01), Pomie et al.
patent: 4359088 (1982-11-01), Jabsen
patent: 4377551 (1983-03-01), Doublet et al.

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