A METHOD TO IMPLEMENT THE REQUEST OF MINIMUM INVENTORY OF HUMAN SYSTEM INTERFACES IN ADVANCED MAIN CONTROL ROOM ACCORDING TO ISG-05.

摘要

Human error is a major contributor to accidents that occur in nuclear power plants (NPP). On the other hand, human intervention can be very effective if operators handle accidents in an appropriate way. An efficient human-system interface (HSI) is important not only to prevent human errors but also to assist the operator in coping with unforeseen events. However, the definition of minimum inventory (MI) of HSIs in main control room of NPP changed with the rapid development of digital technologies. What's the minimum HSIs required to assure the safety of NPP when emergency conditions occurred? It is a new challenge to nuclear regulators. The U.S. Nuclear Regulatory Commission (NRC) is consciously aware and working on this and launched DI&C-ISG-05 HICR-HF (Highly-Integrated Control Rooms—Human Factors Issues), for staff to evaluate licensee compliance with NRC requirements. In this article, through four steps, we demonstrate a heuristic approach to achieve the requirements of MI of HSIs according to ISG-05. (a) Identifying the MI of HSIs according to the required function ; (b) Confirming the relevant human factor analysis; (c) Verifying the completeness of the MI; (d) Describing the information of inspections, tests, analysis, and acceptance (ITAAC) criteria. Our experience shows that this heuristic approach is not only practicable but also complete. Potential applications of this method to nuclear industry are very clear. It not only assists vendors but also regulators to look over the HSIs of MCR and RSF in an efficient approach. It helps facilities/vendors/regulators save time and money through faster HFE analysis and evaluation.