Areva Np Gmbh

Jean-Jérôme Vermoyal

Pierre Barberis

Véronique Rebeyrolle

Petra-Britt Hoffmann

A zirconium alloy that is resistant to shadow corrosion for a boiling water nuclear reactor fuel assembly component, the alloy being characterized in that: A fuel assembly component made of the alloy, a fuel assembly including the component, and the use thereof.

Zirconium alloy resistant to corrosion in drop shadows for a fuel assembly component for a boiling water reactor, component produced using said alloy, fuel assembly, and use of same

A method for design of a fuel assembly for nuclear reactors, including structural components made from zirconium alloy: the mean uniaxial tensile or compressive stress to which the components are subjected during the assembly life is calculated, the zirconium alloy of which the components are made is selected according to the following criteria: those components subjected to an axial or transverse compressive stress of between &#x2212;10 et &#x2212;20 MPa are made from an alloy with a content of Sn between Sn=(=0.025&#x3c3;&#x2212;0.25)% and Sn=&#x2212;0.05&#x3c3;%: those components subjected to such a stress of between 0 et &#x2212;10 MPa are made from an alloy the Sn content of which is between Sn=traces and Sn=(0.05&#x3c3;+1)%: those components subjected to such a stress of between 0 and +10 MPa are made from an alloy the Sn content of which is between Sn=0.05% and Sn=(0.07&#x3c3;+1)%: and those components subjected to such a stress of between +10 and +20 MPa are made from an alloy the content of SN of which is between 0.05% and 1.70%. A fuel assembly made according to the method.

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Chasselay, France

Jean-Jérôme Vermoyal