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Preliminary study to estimate human error probabilities in digitalized Main Control Rooms   KIM Ar Ryum1, JANG Inseok2, and SEONG Poong Hyun3   1. Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea (arryum@kaist.ac.kr) 2. Instrumentation and Control/Human Factors Division, Korea Atomic Energy Research Institute, 111 Daedeok-daero, 989 beon-gil, Yuseong-gu, Daejeon, Republic of Korea (isjang@kaeri.re.kr) 3. Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea (phseong@kaist.ac.kr)   Abstract: Nuclear power plants in Republic of Korea have been constructed with a new type of main control room called a digitalized main control room. In a digitalized main control room, because digital technologies have been adopted, the environment of the main control room is different from that of conventional main control rooms. The operators may obtain plant data via digitalized human system interfaces, large display panels, computerized procedure systems, soft controls and so on. Accordingly, the necessity of considering the new environment when performing human reliability analysis methods has been raised. In this research, a new method was proposed to assess the human error probability in a digitalized main control room. The goal of this paper is to apply the suggested frameworks to assess the human error probability. For that, each framework is briefly described and applied for two selected human failure events. As a result, the nominal human error probabilities are obtained for two human failure events. This study represents a good starting point from which to devise a very useful framework to estimate the human error probability in digitalized MCRs. Keyword: digitalized MCR; human error; human reliability analysis
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