Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1993-03-18
1994-11-15
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376352, G21C 104
Patent
active
053655583
ABSTRACT:
A fuel assembly for a boiling water reactor includes a cluster of mutually parallel fuel rods. A fuel assembly channel laterally surrounds the cluster of fuel rods and has open upper and lower ends. A top plate covers the upper open end of the fuel assembly channel and has coolant outlets formed therein. A foot part is assembled from a plurality of individual parts and includes a cast transitional piece having a lower end with an inlet opening formed therein and an upper edge inserted into the open lower end of the fuel assembly channel. The transitional piece defines and surrounds a flow channel widening upward in funnel-like fashion from the inlet opening. The foot part also includes a base plate being disposed at and welded to the upper edge of the transitional piece. The base plate covers the open lower end of the fuel assembly channel and has coolant inlets formed therein. A foot part for a fuel assembly of a boiling water reactor includes a transitional piece defining and surrounding a flow channel widening in funnel-like fashion upward along a center axis. The transitional piece has a lower end with at least one inlet opening formed therein and an upper end with an edge. A one-piece base plate is welded to the edge, covers the flow channel at the top and has coolant inlets formed therein for a flow of coolant through the fuel assembly.
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Lippert Hans-Joachim
Meier Werner
Chelliah Meena
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Walsh Donald P.
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