公开(公告)号：US12051515B2

公开(公告)日：2024-07-30

申请号：US17275424

申请日：2019-09-12

Applicant: FRAMATOME

Inventor： Christian Royere ,  Mathieu Segond

IPC: G21D3/00 ,  G21C3/04 ,  G21C9/00 ,  G21C17/108

CPC classification number: G21D3/001 ,  G21C3/047 ,  G21C9/00 ,  G21C17/108

Abstract: A method for protecting a nuclear reactor includes reconstructing a maximum linear power density released among the fuel rods of the nuclear fuel assemblies of the core; calculating the thermomechanical state and the burnup fraction of the rods; calculating a mechanical stress or deformation energy density in the cladding of one of the rods by using the said reconstructed maximum linear power density, the calculated thermomechanical states and the calculated burnup fractions, by means of a meta-model of a thermomechanical code; comparing the calculated mechanical stress or the calculated deformation energy density with a respective threshold; and stopping the nuclear reactor if the calculated mechanical stress or the calculated deformation energy density exceeds the respective threshold.