Thermal-hydraulics Design and Safety Analysis of Small Modular Lead-Bismuth Cooled Fast Reactors

Small modular reactor is seen as one of the most popular research directions in nuclear field, and lead-bismuth cooled fast reactors are widely chosen in the design of small modular reactors due to its excellent neutron properties and thermal conductivity. A 20MW lead-bismuth cooled fast reactor was designed in this paper and both fluent-based CFD analysis and cobra-based subchannel analysis were applied to its safety verification and design optimization. This paper not only presents a verified design of small modular Lead-bismuth cooled fast reactor with thorough thermal-hydraulics analysis, but also presents a platform to design heavy metal cooled fast reactor.