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A model of the final stage of nonstationary swelling has been developed to predict the residual life of fast neutron fuel elements by the criterion of achieving a swelling of… Click to show full abstract
A model of the final stage of nonstationary swelling has been developed to predict the residual life of fast neutron fuel elements by the criterion of achieving a swelling of 15%. A criterion for achieving this stage is formulated, using the shape of the histogram of the void size distribution. A set of characteristics of radiation porosity, sufficient for a quantitative description of the swelling of reactor structures, is determined. The possibilities of using the model to predict the residual life of the fuel-element claddings made of EK164 steel after a service in the BN-600 reactor until achieving a maximum damaging dose of 99 dpa are illustrated.
Journal Title: Physics of Metals and Metallography
Year Published: 2020
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