Section 29: Categories of radioactive substances

The categories of radioactive substances, sources and practices for the purpose of this Act shall be classified as follows-(a) Category I, X-ray, that is, gamma-ray sources and other sealed sources used in medical diagnosis and therapy;
(b) Category II, that is, unsealed radiation sources used in medical diagnosis and therapy, agriculture, industry and research;
(c)
Category III, that is, nuclear research reactors and critical assemblies, nuclear power reactors, mining and milling of radioactive ores and other facilities of the nuclear fuel cycle; and
(d) Category IV, that is, non-uranium mines and mills having associated radioactive substances in concentration which can lead to significant radiation exposures to workers and the public.