Abstract: Due to the high requirements of radiation safety control and technical difficulties in radiation protection monitoring of nuclear power plants, some radiation monitoring instruments have been imported for a long time. This paper reviews domestic radiation protection monitoring equipment and analyzes the possible risks from the perspective of technology and function. Facing the problems identified, some management and control measures for classification and graded approach have been formulated. Through the tracking and supervision of the whole process, the performance of the domestic instrument basically meets the use requirements of nuclear power plant.

Key words: nuclear power plants, radiation protection monitoring, instrument, localization, classification and graded control