General description of KIANA-1 structure and its application for fuel rod behavior

The KIANA-1 computer program has been developed by the writer to predict the thermal and mechanical behavior of zircaloy-clad UO2 fuel rods during their irradiation life under steady state conditions. In the ®rst part of this paper a short description of the structure of the program is presented, its range of application is described and the physical phenomena, which are modeled, are brie¯y reviewed. Its second part deals with some examples of KIANA-1 analysis and modeling capabilities