This International Standard applies to radiation monitoring system (RMS) installed in the nuclear power plants (NPPs). This standard gives requirements for the lifecycle management of RMSs and gives guidance on the application of existing IEC standards covering the design and qualification of systems and equipment.

This International Standard is applicable to RMSs intended to be used during normal operations and anticipated operational occurrences, and to be used during and/or after accident conditions. The technical guidance contained in this Standard applies to NPPs, although the specific functions of individual facilities shall be considered during the design and operational lifecycle of RMS. This standard is intended to be consistent with the latest versions of International Standards dealing with radiation monitors, sampling of radioactive materials, instruments calibration, hardware and software design, classification, and qualification. Unless otherwise specified in this International Standard, top level IEC SC 45A standard, IEC 61513, and the second level IEC SC 45A standards apply to RMSs.

This standard may be applicable to other nuclear facilities (e.g. nuclear fuel storage and processing sites) by evaluating the differences from NPPs.