Radiation Monitoring System for Nuclear Facilities

The Radiation Monitoring System that we present in this paper (RMS for the OPAL reactor, Sydney, Australia) encompasses all radiation monitoring tasks, being performed in a continuous mode, on processes involving liquid and gases, as well as area supervision inside the reactor. Information brought by the RMS is reported to the Reactor Control and Monitoring System as well as the Reactor Protection System. The monitoring of liquids inside the facility is served by the following subsystems integrating the RMS: Liquid Effluent Monitor (LEM), Failed Fuel Elements Monitor (FFEM), Secondary Water Activity Monitor (SAMO), Active Liquids Monitor (ALMO) and Waste Streams Monitor (WASMO). The monitoring of gases is achieved by the Air Effluent Monitor subsystem (AEM) and the Intelligent Air Effluent Monitor subsystem (AEMI). The area radiation monitoring function is covered by the ARM network sub-system and dedicated process monitoring (hot cells, transfer systems, etc).