ITER Radiological and environmental monitoring systems : conceptual design elements

A state of the art Radiological and Environmental Monitoring Systems (REMS) is being developed by the ITER Organization, with the engineering support of Fusion for Energy. The primary functions of REMS are to provide health and radiological monitoring for workers as well as area environmental monitoring for the public and thus to assist in the protection against ionizing radiation during ITER operations, including maintenances, and decommissioning. The Radiologically-Controlled Facilities at ITER, to be monitored by REMS are the Tokamak Building, the Tritium Plant Building, the Hot Cell Facility, the Radwaste Facility and the Personnel Access Control Building. Starting from the safety functions assigned to the systems and the requirements imposed by French legislation, embedded in the ITER Preliminary Safety Report, this paper describes the identified REM systems, sub-systems, architectures, safety classification and equipments, and provides the actual status of its design.