WPNEM: INEX 4

Working Party on Nuclear Emergency Matters:
International Nuclear Emergency Exercises 2010-2012

The INEX series of international nuclear emergency exercises, organized under the OECD Nuclear Energy Agency's (NEA) Working Party on Nuclear Emergency Matters (WPNEM), have proven successful in testing, investigating and improving national and international response arrangements for nuclear accidents and radiological emergencies. Previous INEX exercises focused largely upon national and international aspects of early phase management of nuclear power plants emergencies. Starting with INEX 3 (2005-2006), the international community began looking at issue in longer-term consequence management. In order to build on the momentum of INEX 3 and the work of various INEX 3 follow-up activities, the WPNEM launched in 2008 the development cycle for a new INEX 4 international emergency exercise.

INEX 4 focused on issues in consequence management and transition to recovery in response to malicious acts involving the release of radioactive materials in an urban setting. Recognizing that the arrangements for managing these events may vary between countries, the goal of INEX 4 was to provide a basis for enhancing emergency management through the exchange of exercise experiences from participating countries and identification of good practices and common issues.

The INEX 4 exercise series was conducted throughout 2010 and 2011 by 17 participating countries, and included the five main topical areas organized into nine major subjects derived from the questionnaire:

To enable a consistent review of the exercise outcomes, it was decided for all participating countries to use the common INEX 4 framework. This framework allowed all participants to address the same challenges and topical areas in consequence management and transition to recovery. Given the broadly generic nature of many cities and urban spaces, this was believed to be feasible with the proposed exercise scenario. To support this, the WPNEM prepared generic technical materials, including a baseline scenario and series of timed injects to drive the exercise, to help national planning teams develop the country-specific aspects of a national INEX 4 exercise. In addition, information related to the countries use of the exercise material was captured.

This summary report provides general outcomes from participating countries responses to the INEX 4 evaluation questionnaire and includes suggested/recommended areas of focus (key questions) for future consideration.




Last reviewed: 19 March 2013