The general requirement of reporting practices involving radioactive substances is waived in a number of cases, in particular if the total activity or activity concentration of the substances is below nuclide specific levels. The scope of application of such exemption levels is not straightforward because it is e.g. overruled by the requirement of prior authorization for practices belonging to the nuclear fuel cycle and for waste disposal or recycling. The radiological criteria applied to the setting of exemption levels are to a large extent inspired by the recommendations in IAEA-SS 89. However, further considerations emerged during implementation of these principles which shed new light on the issue. The methodology developed for establishing exemption levels is the subject of another paper. (author). 7 refs.
Janssens, A A;  Lochard, J;  Cooper, J;  Sugier, A 
- European Union, Brussels (Belgium)
- Centre d`Etudes sur l`Evaluation de la Protection dans le Domains Nucleaire (CEPN), Fontenay-aux-Roses (France)
- National Radiological Protection Board, Chilton (United Kingdom)
- CEA Centre d`Etudes de Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire