[en] It is first cycle with 18-months fuel cycle after increasing fuel enrichment. Nuclear code package SCIENCE is used for in-core reload design. With HADES-II treatment code, input decks for one-dimensional model and synthesis method code are automatically generated, and reload design reports are automatically completed also. The author represents the design files needed to submit to the plant and computer software used for reload design, and gives the comparison and analyses between the measured values from the startup physics tests and the design expected values