Until the Chernobyl nuclear accident in 1986, there was no information exchange system. Immediately following that accident, the IAEA's Member States negotiated the so-called Emergency Conventions to ensure that in the event of a nuclear accident, the country that suffers an accident would issue timely, authenticated information, while the Member States that could field technical support, would do so in a coordinated fashion, if such support is requested by the State concerned.
When concerns regarding the malicious use of nuclear or radioactive materials grew, the IAEA established the IEC in 2005 to serve as a global focal point for emergency preparedness and response to nuclear and radiological incidents and emergencies.
The IEC develops standards, guidelines and tools like USIE. The IEC staff provide support, training, global event reporting, information exchange and around-the-clock assistance to Member States dealing with nuclear and radiological events. Fundamentally, the IEC is a global coordinator for international expertise from the IAEA, as well as from other international organizations, such as the FAO, WHO, or WMO.