[en] KALIMER-600 is designed to satisfy the safety principle of a defense-in-depth and also the safety design objectives which have been established to implement the safety principle in the design. Highly reliable diversified shutdown mechanisms are equipped for the reactivity control function during an accident or abnormal transients in KALIMER-600. The reactivity is also controlled by the inherent reactivity feedback mechanisms incorporated in the design. In addition, a uniquely designed passive decay heat removal circuit provides the heat removal function. Due to these passive and inherent safety characteristics, the safety of KALIMER-600 is much improved than the existing PWR designs. Therefore, the events whose frequencies are higher than 10^-7 per reactor-year are categorized as design basis events (DBEs). The safety analysis has been performed for the TOP and LOF events which are two most important DBEs in KALIMER-600. The analysis results show that the fuel, clad, and the coolant temperatures are well within the safety limit temperatures. Therefore, the KALIMER-600 design fulfills the design basis safety criteria with no fuel damage and no threat to its structural integrity during the transients. Through the analysis, it is clearly shown that the KALIMER-600 design maintains its safety functions required for the mitigation of accidents with an appropriate margin. Therefore, it is concluded that the KALIMER-600 breakeven core design ensures the safety margins for the considered DBEs