A description of a computer code, which one can use in analyzing transient heat transfer data on annular fuel element simulators, is given. There have been considered two kinds of boundary conditions. The first ones, temperature and heat points of a simulator section (these two points can coincide) and the second ones, two temperature-time dependences, are known at two different points of a simulator section. In both cases the boundary conditions and internal heat generation have been smoothed by cubic splines. A rewetting front velocity is supposed to be known in the code. 2 refs.; 7 figs.