In this paper we describe the development of stored energy in pure and doped NaCl samples as well as natural rock salt during irradiation. The dependencies of the stored energy value on the irradiation temperature and the presence of dopants have been studied. Irradiation experiments at controlled temperatures between 50 and 150 degrees C and doses up to 150 Grad have been carried out. For pure NaCl we have found that the damage is formed only in a relatively narrow range of irradiation temperatures. In almost all cases the effect of doping is that the stored energy value is larger and the temperature range where stored energy develops is wider as compared to pure NaCl.</p