Thermomechanical loading applied on the cladding tube during the pellet cladding mechanical interaction phase of a rapid reactivity initiated accident

Arthur Hellouin de Menibus (1) , Jérôme Sercombe (2) , Quentin Auzoux (3) , Christophe Poussard (4)

1 LC2M - Laboratoire d'Etude du Comportement Mécanique des Matériaux
2 LSC - Laboratoire de Simulation du Comportement des Combustibles
3 LCMI - Laboratoire de Comportement Mécanique des Matériaux Irradiés
4 SEMI - Service d'Etudes des Matériaux Irradiés

Calculations of the CABRI REP-Na5 pulse were performed with the ALCYONE code in order to determine the evolution of the thermomechanical loading applied on the cladding tube during the Pellet-Cladding Mechanical Interaction (PCMI) phase of a rapid Reactivity Initiated Accident (RIA) initiated at 280 °C that lasted 8.8 ms. The evolution of the following parameters are reported: the cladding temperature, heating rate, strain rate and loading biaxiality. The impact of these parameters on the cladding mechanical behavior and fracture are then briefly reviewed.

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]

Arthur Hellouin de Menibus, Jérôme Sercombe, Quentin Auzoux, Christophe Poussard. Thermomechanical loading applied on the cladding tube during the pellet cladding mechanical interaction phase of a rapid reactivity initiated accident. Journal of Nuclear Materials, 2014, 453, pp.210-213. ⟨10.1016/j.jnucmat.2014.06.046⟩. ⟨hal-01057281⟩