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The RJ11 Vehicle Radiation Portal Monitor (RPM) is primarily used to monitor if there are radioactive materials carried by trucks, container vehicles,
trains, and if other vehicles contain excessive radioactive substances. The RJ11 Vehicle RPM is equipped with plastic scintillators by default, with
sodium iodide (NaI) and ³He gas proportional counter as optional components. It features high sensitivity, low detection limits, and rapid response,
enabling real-time automatic monitoring of various passageways. Combined with auxiliary functions such as vehicle speed detection,
video surveillance, license plate recognition, and container number identification (optional), it effectively prevents the illegal transportation and
spread of radioactive materials. It is widely used for radioactive monitoring and control at exits and entrances of nuclear power plants,
customs, airports, railway stations, etc. The monitoring system complies with the relevant requirements of the Chinese standard GB/T
24246-2009 "Radioactive and Special Nuclear Material Monitoring Systems". The optional radionuclide identification module complies with
the relevant requirements of the Chinese standard GB/T 31836-2015 "Spectrometry-Based Portal Monitors Used for the Detection and
Identification of Illicit Trafficking of Radioactive Material".