Development of a systematic checklist for the human factors evaluation of the operator aiding system in a nuclear power plant

In the safety systems review of the Korean nuclear power plants, the Human Factors Program Plan for the OAS (Operator Aiding System) has been executed mainly by an expert review. The reviewers had to integrate all the relevan t sources of information and make judgement based on their own criteria. Co nsistency and thoroughness of this process was always in question and a sys tematic approach to correct these problems was in need, The purpose of this work was to design a methodology for supporting an effective and efficient ergonomic evaluation of the user interface of the GAS. By collecting and s ystematically structuring all the critical considerations in the human fact ors review process, an ergonomic evaluation checklist for the CFMS (Critica l Function Monitoring System) in an MCR (Main Control Room) was designed an d implemented in this study. Application of the developed checklist was use d during the licensing review process for the CFMS of the Ulchin unit 3&4. Efficiency and effectiveness of the human factors review process was enhanc ed significantly with the aid of the integrated checklist and the standardi zed evaluation format developed in this study.