Development and assessment of system analysis code, TASS/SMR for integral reactor, SMART

A new requirement has motivated the development of smaller reactors since the 1980s. Integral type reactors have been highlighted as a promising option. SMART, which is an integral type reactor has been developed at KAERI, and TASS/SMR code was developed to analyze the thermal hydraulic phenomena of the SMART plant. The main purpose of the code is to simulate all relevant phenomena, processes, and conditions inside the reactor coolant system that may occur during such accidents. Development and assessment of the code is represented in detail. By means of the assessment results using experimental data, TASS/SMR code can be used for both the experiment simulation as well as the SMART analysis. The code predicts thermal hydraulic phenomena for the representative accidents for SMART reasonably.