​The International Radiation Monitoring Information System (IRMIS) supports the implementation of the Convention on Early Notification of a Nuclear Accident through the provision of a mechanism for the reporting and visualization of large quantities of environmental radiation monitoring data during nuclear or radiological emergencies.

The information reported and the tools provided within IRMIS may be used to assist official Contact Points designated under the Convention on Early Notification of a Nuclear Accident and the Convention on Assistance in the Case of a Nuclear Accident or Radiological Emergency in the decision-making process related to the implementation of public protective actions and other response actions during a nuclear or radiological emergency.

IRMIS is not an early warning system that automatically reports when there are significant deviations in values or when values are detected above certain levels. However, configuration of the visualization features offered by IRMIS may be used to help official Contact Points to help determine where elevated measurements may indicate that actions to protect the public may be warranted.