Fuel assembly for a boiling water reactor

Details Fuel assembly for a boiling water reactor Fuel assembly for a boiling water reactor

2005-04-01

2010-10-26

Mondt, Johannes P (Department: 3663)

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

C376S435000, C376S442000, C376S448000, C376S449000

Reexamination Certificate

active

07822166

ABSTRACT:
A fuel assembly for a boiling water reactor contains a plurality of fuel rods maintained laterally by spacers and surrounded by a fuel assembly case. The outer walls of a spacer are provided with projecting elements that maintain a minimum space between the outer surface of the spacer and the fuel assembly case, the opening span of a spacer being smaller than the internal width of the fuel assembly case. The fuel assembly is characterized in that the spacer is maintained in an off-center position by a force acting laterally thereon such that an external space located between an outer surface of the spacer associated with the outer surface of a central cell and the fuel assembly case is narrower than an internal gap opposite the external space and oriented towards the center or towards a control element disposed at the center.

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