the International Atomic Energy Agency is the international organization under the control of the UN, its role is to promote the peaceful use of nuclear energy and to ensure that nuclear materials held by users are not diverted for military use.

International Financial Reporting Standards (IFRS) are accounting and financial standards designed to facilitate comparisons among companies in the same sector and in different countries, and to respond to market demand for more transparency.

International Nuclear Event Scale. The INES is an international scale that defines the safety significance of an event occurring in a nuclear facility. The scale was conceived by an international group of experts assembled by the International Atomic Energy Agency (IAEA) and the Nuclear Energy Agency (NEA) of the Organization for Economic Cooperation and Development (OECD). It was applied internationally in 1991. Like existing seismic or avalanche scales, the INES is a communication tool for the public and the media. Nuclear events are classified from least serious to most serious on a scale of 0 to 7. For example, the Chernobyl accident was a level 7 event. On 24 June 1999, the French nuclear safety authorities decided to extend the scope of the INES to include radioactive material transportation for a one year trial period, following a recommendation by the High CSSIN, Conseil Supérieur de la Sûreté et de l'Information Nucléaire, the council on nuclear safety and information.

The institute for nuclear protection and safety. Organization responsible for research and assessments in the fields of nuclear safety, public health, environmental protection and transportation safety. IPSN provides technical support to DSIN.

(See also "DOSE") Exposure to radiation and, by extension, the effects of exposure to radiation.