Operation intervention level (OIL) is a type of action level that can be used immediately and directly (without further assessment) to determine the appropriate protective actions and other response actions on the basis of an environmental measurement. OIL is used to implementation actions to protect the public due to the severe conditions at a nuclear power plant. This paper presents an integrated solution that integrates remote access and remote support over the Internet. The system real-time acquire the data of source term, meteorological, off-site monitoring points, monitoring vehicles, execute operation intervention level calculation, protective action decision-making to public based on data from database or input by user. The system simultaneous input multiple monitor data, and protection of the public action based on the results of multiple OIL decisions. The system display off-site monitoring points, protection of the public area of operations and administrative village using WebGIS.

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