Fusion Science and Technology / Volume 61 / Number 1T / January 2012 / Pages 349-354
Modeling and Simulations / Proceedings of the Fifteenth International Conference on Emerging Nuclear Energy Systems
This paper presents the results of iterative neutronics and thermal-hydraulic design optimization of a liquid metal cooled reactor for lunar surface power. The reactor placed below grade on the lunar surface is capable of generating 1.0 MWth continuously for ~20 years without refueling. It satisfies subcriticality requirement for shutdown, during launch and when submerged in wet sand and flooded with seawater in the unlikely event of a launch abort accident. The 3-D thermal-hydraulic design ensures good flow distribution and cooling of UN fuel pins and adequate mixing in the exit duct.