The IAEA was created in 1957 with a mandate to promote the safe use of nuclear technologies for peaceful purposes. It is an organisation of the United Nations family which in January 2014 comprised 161 member States.
Created in 1958, the NEA groups the majority of the OECD members states and its main purpose is to promote cooperation between the governments of the participant countries for the development of nuclear energy as a safe source of energy that is acceptable both environmentally and economically.
The Safety authorities of countries operating nuclear power plants of French design (FRAREG), the Multinational Design Evaluation Programme (MDEP) and the International Nuclear Regulators' Association (INRA)
The ICRP is a non-governmental organisation (NGO) created in 1928 for the purpose of assessing the state of knowledge on the effects of radiation in order to identify their implications with regard to the radiologial protection rules to adopt.