A Critical Analysis of Molten Salt Reactor (MSR) Safety Systems
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 5
Abstract
A criticality analysis of Molten Salt Reactor (MSR) safety systems is carried out in this research. These systems are design to work in the event of an accident scenario, where a solid freeze plug (frozen fuel salt) melts, and the fuel salts volume drains into a number of storage tanks of non-critical geometry. For the purpose of this research, MONK Version 9A Monte Carlo Program by ANSWERS Software Service was used to carry out the criticality analysis for the drain tanks using the design geometry and specifications of the Molten Salt Research Experiment (MSRE) at the Oak Ridge National Laboratory (ORNL), Tennessee-USA. We assumed the composition of the fluoride salt mixture in the fuel drain tank to be: 42.16wt% LiF, 35.79wt% BeF, 21wt% ZrF4, 1.02wt% UF4, and 0.02wt% PuF3. The safety margin for subcriticality was determined. The results obtained showed that the four storage tanks were significantly subcritical, as expected. The effective multiplication factor (Keff) as calculated by MONK for a salt volume of 1,905,870cm3 stored in four drain tanks of capacity 2,271,100cm3 (each) with a diameter of 127cm is 0.9076 (subcritical).
Authors and Affiliations
C. E. Okon*1
Keywords
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