Patent Number: 
Section: claims

1. A nuclear facility, comprising:a fuel element pool filled with a first cooling liquid;a fuel element rack disposed in said fuel element pool, said fuel element rack including fuel element compartments configured for receiving fuel elements;said fuel elements received in said compartments and being in direct contact with the cooling liquid in said fuel element pool; anda cooling circuit including a second cooling liquid; anda cooling element disposed in one of said fuel element compartments instead of one of said fuel elements, said cooling element being immersed in the first cooling liquid, being connected in said cooling circuit and acting as a heat exchanger through which the first cooling liquid and the second cooling liquid can flow, said cooling element facilitating heat exchange between the first cooling liquid and the second cooling liquid. 2. The nuclear facility according to claim 1, wherein said cooling element is constructed for insertion in said one of said compartments in said fuel element rack. 3. The nuclear facility according to claim 2, wherein said cooling element has a cross sectional area that is the same as a cross-sectional area of one of said fuel elements, wherein the cross-sectional area of the one of said fuel elements is perpendicular to a central longitudinal axis of the one of said fuel elements. 4. The nuclear facility according to claim 1, wherein said cooling element includes at least one coolant channel for passage of the second cooling liquid circulating in said cooling circuit. 5. The nuclear facility according to claim 1, wherein said cooling element includes two channels and an intermediate space located between said two channels, wherein said intermediate space is configured for passage of the first cooling liquid located in said fuel element pool. 6. The nuclear facility according to claim 1, wherein said cooling element includes:a condensate collector;at least one condensate channel for feeding the second cooling liquid into said condensate collector;a vapor collector;at least one vaporizer channel for conducting the second cooling liquid vaporized in said at least one vaporizer channel into said vapor collector;a supply line configured for supplying the second cooling liquid from said cooling circuit to said at least one condensate channel; anda return line configured for feeding the second cooling liquid, which is vaporized, from said vapor collector to said cooling circuit. 7. The nuclear facility according to claim 5, wherein said two channels are parallel to each other and extend in a longitudinal direction of said fuel element compartments. 8. The nuclear facility according to claim 5, wherein said two channels are configured for receiving a circulation of the second cooling liquid.