Device for cooling the main vessel of a fast neutron nuclear rea

Details Device for cooling the main vessel of a fast neutron nuclear rea Device for cooling the main vessel of a fast neutron nuclear rea

1989-02-21

1990-05-22

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Shield or barrier between radiation or heat source and...

G21C 1100, G21C 1500

Patent

active

049275976

ABSTRACT:
The upper part of the vessel (3) is cooled as a result of the circulation of cooled sodium (27). The cooled sodium coming form the lower part of the reactor core is introduced into a first collector (15) via pipes (17) and then overflows into a second collector (16). The second collector (16) or return collector is delimited by an overflow sleeve (18) and by an inner sleeve (21), the height of which is substantially less than the height of the overflow sleeve (18). The lower part of the inner sleeve (21) is connected to the overflow sleeve (18) by an annular plate (22) ensuring the stiffening of the sleeve (18). The height of the sleeve (21) is preferably between one-third and third of the height of the sleeve (18). This prevents vibrations from being generated during the circulation of the sodium.

REFERENCES:
patent: 3962032 (1976-06-01), Berniolles et al.
patent: 4167445 (1979-09-01), Aubert et al.
patent: 4249995 (1981-02-01), Jogand
patent: 4298431 (1981-11-01), Depierre et al.
patent: 4477410 (1984-10-01), Debru
patent: 4664876 (1987-05-01), Uotani et al.

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