Apparatus and method for categorization and optimization of spare parts for operating nuclear power plant

An apparatus and a method for categorization and optimization of spare parts for operating a nuclear power plant are provided to improve economical efficiency of the nuclear power plant through material categorization for material optimization and application of an optimal algorithm. An apparatus for categorization and optimization of spare parts for operating a nuclear power plant includes a material categorization unit(20) and a material materializing unit(30). The material categorization unit categorizes importance by materials by using importance of a device derived by an equipment optimization process based on a database(10). The material materializing unit is inputted with a result categorized by the material categorization unit and materializes a material of a target device categorized by the material categorization unit by using a lead time, a frequency of use, and the importance to store and manage the materialized material in the database.