HUMAN FACTORS IN ORGANIZATIONAL DESIGN AND MANAGEMENT – XI NORDIC ERGONOMICS SOCIETY ANNUAL CONFERENCE – 46 897 Comparison of two human factors approaches in an integrated evaluation/validation of a future emergency operating organization Cecilia DE LA GARZA, Hélène PESME, Pierre LE BOT, Jean-Paul LABARTHE Risk Management Department, EDF, R&D, Clamart, France Abstract. This paper focuses on a Human Factors evaluation campaign that had associated Ergonomics and Human Reliability Analysis (HRA) for the evaluation of a future control room. This campaign was conducted within the framework of a broad design project and was performed in a full scale simulator with 3 futures operating teams. The aims and methods of both, ergonomics and HRA, are compared and their particularities and complementariness in the different stages of a HF evaluation campaign (preparation, data collection, analysis, conclusions and recommendations) are discussed. The results highlight their contribution to safety and risk analysis. Keywords. Simulation, HF evaluation, design, HRA. 1. Introduction and background to study For more than 10 years, Human Factors (HF) experts have been involved in designing control means for a future control room. The evaluation is part of the HF engineering programme and is the subject of an iterative simulation process (Labarthe, De la Garza, 2011). Since 2002 about ten HF evaluation rounds have been carried out combining different forms of simulation, according to the simulation resources and data available during the project development stages. The first simulations were made with static and dynamic mock-up, then, since 2009, on a full-scale simulator, reproducing the control means and operation of the future reactor. They are evaluations of all the control means aimed at analysing interactions and the coupling "Man-Machine-Imaging-Procedures- Organisation-Interfaces". The simulation has two objectives: as an evaluation tool, through a diagnosis based on analysing the operating team's activity and, as a prognostic tool, anticipating the characteristics of the future activity and safety risks. The evaluation aims therefore to ensure that the design choices are suitable for the operating requirements and the achievement of safety objectives in normal and emergency operation. In this paper, we will focus on the HF evaluation round conducted in 2012 with a multi-disciplinary evaluation team combining Ergonomics and Human Reliability. This evaluation aimed to evaluate the team functioning in emergency operation in the control room. It involved 3 operating teams as initially planned for emergency operation, made up of 2 operators, an operations manager (the team leader) and a safety engineer (independent review line). Each team took part for a week in 5 scenarios (accidental transients) on the full-scale simulator. In addition, instructors were called in to prepare the accident scenarios, train the teams in advance, and control the simulator during the tests, then to support the post-test analysis. The aim of having distinct HF approaches was to compare and contrast points of view and methods to target issues relating to operating performance and safety, organisational inspection and review lines of defence, and how teams operate