The Korea Electric Power Research Institute established performance demonstration programs for non-destructive examination personnel who analyze eddy current data for steam generator tubing in the nuclear power plant. The purpose of these performance demonstration programs is to ensure a uniform knowledge and skill level of data analysts and contribute to safely operate the nuclear power plant. In Korea, there have been many changes in non-destructive examination of steam generator tubing such as inspection scope, plugging criteria and qualification requirements. According to the Notice 2008-23 revised by the Ministry of Education, Science and Technology, the analyst for steam generator tubing shall be qualified as the qualified data analyst, and the site specific performance demonstration program shall be implemented for them. KEPRI developed these performance demonstration programs and they are being successfully implemented. The analyst's performance is expected to be improved by the implementation of these programs.