| Abstrak/Abstract |
KLT-40S has an advantage as a floating nuclear power plant with high mobility and portability because it can be towed throughout the sea to the destination. The changes in the sea conditions when the nuclear reactor operates should be accounted for the thermal-hydraulic analysis. The sea state condition and the reactor power were varied to know how the characteristics of the thermal-hydraulic parameters at various sea state conditions, especially the void fraction. RELAP5-3D was used to analyze the thermal-hydraulic characteristics of the floating nuclear power plant in two different types of reactor motion with nine sea state conditions. The KLT-40S reactor core model includes peak channel, average channel, and bypass channel is developed in RELAP5-3D code. The result of the analysis shows that the effect of reactor motion is higher in the pitching - heaving motion than the rolling - heaving motion. In extreme sea state condition of the pitching - heaving motion, the void formation is started from 70% of reactor power. The highest void fraction observed in this condition with 110% of reactor power is 5.858 %. Otherwise, in extreme sea state condition of the rolling - heaving motion, the void formation is started from 100% of reactor power. The highest void fraction observed in this condition with 110% of reactor power is 0.07%. |
