FACTT - A computer code for calculation of fuel and clad temperatures under transient conditions

The starting point in the analysis of fuel behaviour under operational transients is calculation of fuel and clad temperatures. In a sophisticated code meant to evaluate various aspects of fuel behaviour, it is desirable to have a fast and accurate method to calculate temperatures. Towards this goal, a computer code FACTT has been developed for the calculation of temperatures under operational transients. A brief description of the method adopted in the code and the capabilities of the code is given in this paper