The application of transient analysis code to estimation of total released energy in a two-fuel-solution-tank system

A calculation code was developed for transient analysis of the total released energy in a criticality accident with two fuel-solution tanks. The calculation method was confirmed to be effective for transient analysis in a fuel-solution-tank system. The verification of the code was performed by comparing the calculation results with those of TRACY experiments. In the code, neutronic coupling between the tanks is treated. Using this code, transient analyses were performed for a two-tank system using different feedback models. The analyses confirmed that the total energy released in criticality accident with two fuel-solution tanks can be estimated using the knowledge of the total energy released in a single-fuel-solution-tank system.