Closing device for initiating cooling for a core melt

Details Closing device for initiating cooling for a core melt Closing device for initiating cooling for a core melt

1995-12-08

1997-12-30

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Reactor protection or damage prevention

Core catchers

376284, G21C 9016

Patent

active

057039178

ABSTRACT:
A nuclear reactor facility has a collecting chamber for a core melt, a coolant tank and a coolant connecting line having an inlet end connected to the coolant tank and an outlet end protruding into the collecting chamber and having an outlet cross section. A closing device at the connecting line which opens as a function of temperature for initiating cooling of the core melt includes a closing member disposed at the outlet end of the connecting line for normally tightly closing the outlet end. The closing member has a temperature-dependent opening element for tripping clearance of at least a portion of the outlet cross section of the connecting line upon thermal action by the core melt to direct the coolant from the coolant tank, through the connecting line and into the collecting chamber. The opening element being a plastic block which thermally insulates the coolant, and is corrosion-resistant.

REFERENCES:
patent: 2723722 (1955-11-01), Hicks
patent: 4442065 (1984-04-01), Latter et al.
patent: 5080857 (1992-01-01), Miller et al.
patent: 5410577 (1995-04-01), Forsberg et al.
Japanese Patent Abstract No. JP 60-066 800, (Apr. 1985).

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