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Goiania - 20th anniversary technical meeting

Technical Meeting on Remediation Strategies and Long Term Management of Radioactive Waste after Accidental Radioactive Releases to the Environment - 20th Anniversary of Goiânia Accident - 3-5 October, 2007, Sao Paulo, Brazil

Introduction and background

In cooperation with the Brazilian National Nuclear Energy Commission (CNEN) and the Spanish Nuclear Safety Council (CSN) a Technical Meeting was held in Sao Paulo, Brazil on 3-5 October 2007 on the occasion of 20th anniversary of the Goiânia accident. The Goiânia accident of 13 September 1987 contaminated the environment and exposed the local community to ionizing radiation.

An international workshop was held in Brazil in September 1994 that used the Goiânia accident as a basis for discussion of approaches to decision making after accidental releases of radioactive material. Although environmental aspects were discussed, the focus of the 1994 workshop was mainly on the dosimetric, decontamination and medical aspects of the accident.

The long term consequences of the accident, such as environmental impacts and management of radioactive waste arising from remedial actions, were not addressed. In the intervening two decades, following a series of accidents involving the release of radioactivity to the environment, much has been learned about the management of the long term consequences of such accidents. The International Commission on Radiological Protection (ICRP) has developed safety recommendations for intervention in cases of prolonged exposures while the IAEA has developed Safety Requirements for remediation of areas contaminated by past practices and accidents and a Safety Guide entitled Application of the Concepts of Exclusion, Exemption and Clearance. It is now timely to review the lessons learned in the management of long term impacts. This experience can be used to better delineate preparedness plans in terms of remediation of urban and natural environments and in terms of radioactive waste management.


The main topics covered included the strategies to prioritize and optimize remediation of urban and natural environment contaminated with radioactive materials, and strategies and means to minimize radioactive waste produced by such accidents. Preparedness for remediation, knowledge of the radioecological sensitivity of the environment, tools to assess contamination of urban environments and long term planning and management strategies for radioactive waste (conditioning, storage and disposal) were among the key topics discussed.


| Last update: Tuesday, 09 December, 2014.