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Situation awareness of operators plays a key role in the safety of a nuclear power plant. The establishment of a situation awareness assessment model (SAAM) is the foundation of an advanced HRA method. The paper firstly ascertains the relation between situation awareness and human reliability analysis and then forms an organization-committed cause-effect conception model. On the basis of the above,...
This study examined the effects of human redundancy arrangements on performance in the execution of computerized emergency operating procedures. It was found that there was significant difference in completion time but no significant differences in error rate or subjective workload between single-operator and two-operator setups. For the two-operator setup, an unbalanced workload was found. Team completion...
There are several equipment failure databases originating in the nuclear power plant that are successfully used in quantitative risk analysis applications Le, probabilistic safety assessment (PSA). Regulatory bodies (like AERB, India) now accept the importance and use of databases for safety and reliability studies in the nuclear industry as industry practice. Databases containing human error data...
Human Reliability Analysis (HRA) is an important part of Probabilistic Safety Assessment (PSA) in a nuclear power plant (NPP). It can be used to evaluate and quantify the behaviors of the operators in a main control room (MCR) for a safety assessment. Most of the MCR operator actions fall within category C (post-accident) human factor events. The paper analyzes the post-accident operator's behaviors...
Nuclear power plants (NPP) are complex socio-technological systems where safety is the supreme concern for all activities. While studies of past accidents reveal that technical, human and organizational factors are major contributors to violation of safety, a generically accepted paradigm for safety assessment is still unknown. Meanwhile, reporting safety-relevant event occurred in NPP operations...
This paper presents work in progress on a project to develop a process for integrating human reliability analysis (HRA) into the design process used in nuclear power plant modernization and upgrade projects. Human factors, probabilistic risk, and human-system interface design experts were interviewed, resulting in six principles for the use of HRA in design. These principles are: (i) early implementation,...
This study examines the effectiveness of information presentation and task operation in the main control room (MCR) from the human information processing (HIP) perspective. Their influences on operator workloads and implications to staffing are also discussed. The personnel from the Lungmen Nuclear Power Plant in Taiwan were selected as the target sample. A Total of 75 valid questionnaires were analyzed...
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