Nuclear power generation is continuously growing in the Republic of Korea(ROK). However, high nuclear power plants(NPP) density in the relatively small country deteriorates spent nuclear fuel (SNF) management problem. The review of the current status of the SNF inventory, additional storage needs, and the past national histories will help to understand the recent ROK government decision well. Brief introduction to the nuclear organizations for SNF management will be beneficial to project the path forward on the storage, transportation and disposal comprehensively.