Abstract: This paper introduces the basic situation of the access monitoring system of radiation control area in nuclear power plant. Based on the application feedback and management experience in the nuclear power plant, it analyzes the existing problems in the design. Combined with the development of new technology and the improvement of management requirements, it puts forward improvement and optimization suggestions from the aspects of network architecture, automatic distribution, performance improvement, clean control area, large dose data, etc., which is of certain significance to prevent contamination diffusion and improve the level of dose control.

Key words: Radiation control area, Access monitoring, KZC System