Application of HERA for a qualitative error analysis of an emergency scenario

According to the need for data for a human reliability analysis (HRA), a number of data collection efforts have been undertaken in several different organizations. The Human Event Repository and Analysis (HERA) system developed by Idaho National Laboratory for the US Nuclear Regulatory Commission (NRC) is also one of them. This paper summarizes the process and results of the HERA analysis including discussions about the usability of the HERA system for a human error analysis of simulator data. Five simulated records of a steam generator tube rupture (SGTR) scenario were analyzed with the HERA analysis process to scrutinize the causes and mechanisms of the human related events