Modeling hydrogen behavior in fuel rods claddings

Abstract

During normal operation of a nuclear reactor, hydrogen generated through corrosion can be absorbed by the cladding and form brittle hydrides that can compromise the integrity of the cladding. This paper presents the implementation of a computational model to predict the evolution of hydrogen within the cladding, with the aim of being incorporated into the DIONISIO fuel code. Preliminary results indicate that the code is able to satisfactorily reproduce experimental results available in the literature.