Finite element models had been developed considering radiative and conductive heat transfer . This work consist application of such models for nuclear waste disposal containers. The temperature of enclosure walls are predicted with the help finite element method. This is useful in determining material properties of enclosure that will be suitable under required criteria. Heat transfer characteristics and temperature behavior of the enclosure walls is investigated by changing parameters such as absorption coefficient and emissivity of walls. Comparison with the experimental work show that the present heat transfer model works well for the prediction of thermal behavior of the enclosure in the actual nuclear waste disposal containers.