Fuel integrity evaluation during the dry storage by FRAPCON

Regulatory commission limits the cladding temperature to 400 degrees C for fuel with a burnup greater than 45 GWD/MTU. The 400 degrees C is set to prevent damage of the fuel rod cladding and the dry storage cask components related to high temperature. Also, it is important to analyze the hoop stress and determine if it remains below the 90 MPa for hydride reorientation in high-burnup fuel. Recently, David j. Richmond shows that the hoop stress may be related to the axial cladding temperature and oxidation profiles of the rods as well as the rod internal pressure at the end of life and in storage. The aim of this paper is to predict spent fuel integrity evaluation such as the axial cladding temperature and the hoop stress in the dry storage. To predict the cladding temperature and hoop stress of spent fuel is very important for integrity evaluation during the dry storage. The axial temperature and hoop stress during dry storage will give information such as the weakest location.