Layout optimization for the high-temperature nuclear loop with movable equipment based on TMSR-LF1

Abstract

High temperatures could make nuclear power more efficient but also pose a huge challenge to the layout design. In this paper, based on the characteristics of the Thorium Molten Salt Reactor-Liquid Fuel 1 (TMSR-LF1) high-temperature nuclear loop, the schema design and optimization for four typical types of Linear-type, L-type, Z-type, and U-type loop layouts with moveable equipment were carried out. Then, the influencing factors for relevant design parameters of the proposed U-type layout were discussed. Finally, the compact layout with moveable equipment of the TMSR-LF1 loop was determined, and the finite element calculation results considering the creep-fatigue effect of the designed loop pipes met the requirements of the ASME-III-5-HCB code. Moreover, the experimental displacement of the molten salt pump in commissioning condition was basically consistent with the calculated results, which verified the rationality of the proposed loop layout. The research in this paper has practical engineering implications for the design of a high temperature nuclear loop.