Multi-detector environmental radiation monitor with multichannel data communication for Indian Environmental Radiation Monitoring Network (IERMON)

This paper describes the development and features of a solar powered system for monitoring of environmental radiation for detection of nuclear emergency. In order to extend the range of measurement (50 nGy/hr - 25 Gy/hr) and enhance the reliability of the system, multiple detectors are used with different sensitivities. Also, for redundancy in data communication, different options are provided for communication such as GSM, landline leased or dialup and satellite-based data communication. Similarly options are provided for power supply: mains powered, battery powered or solar powered. The mechanical design of the system is also different from the conventional types. The objective of the new design was to provide a system which is compact, elegant and reliable. The system is adopted by the Indian Environmental Radiation Monitoring Network (IERMON) for deployment across India. The paper gives the detailed specifications, system description with the help of a block diagram. The paper also describes how the system can be easily re-configured for other applications such as in-plant monitoring network with power line carrier data communication. (author)