Calculation and Analyses of Containment Pressure and Temperature for PWR1000XL

the containment free volume containment pressure and temperature. Containment pressure and temperature have been calculated and analyzed for PWR1000XL by PAREO 9 code. The results show that, when containment free volume is 53i63m3, in cases of MSLB and LOCA, pressure and temperature of the containment are lower than the design value and the containment integrity is ensured.