[en] This study was performed to produce the experimental data required for design of LMR by installing the experimental facilities for the computer code verification experiments, and develop the elemental components which can be used in sodium facilities or in the LMR, accumulate the basic technology for the developments of these components through the experiment based on sodium. And this study was performed to assure the technology for the safety and the handling of sodium through the sodium safety experiment. The results of this study are to be used as the data for the verification of computer code, and the basic data for the design of KALIMER. The measuring technology and the data based on sodium are to be used for the development of elemental components and the design of experimental facility related to sodium.