الفهرس 
AcknowledgmentOnly 14 pages are availabe for public view
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Abstract
responding Risk assessment in Nuclear Power Plants (NPPs) aims at to the generic safety issues and reactor safety research subjects. It could develop a technical solutions to the unresolved safety issues, and severe accident preventation policy.
Many safety concepts are now applied in the design o~ NPPs to prevent or mitigate radioactive release to the environment. Reactor Protection System (RPS) and Engineered Safety Feature Systems (ESFSs) are provided mainly to meet this requirement. However, review of available data on some nuclear accidents revealed that
human error, beside component failures, is a major contributor to such accidents. For this reason, recent researches focus on developing an advanced information system through which the man-machine interface becomes highly reliable.
The present study addresses some ideas to optimum manipulation of displays and controls, especially in the course of an accident, and the hence allowing the operator to take the quick and proper corrective actions. This objective could be achieved by the following qualitative and quantitative evaluations: