nuclear fuel "nuclear fuel" means any material which is capable of producing energy by a self-sustaining chain process of nuclear fission, either alone or in combination with some other material, and includes fissionable material in the form of uranium metal, alloy or chemical compound, and such other material as the Board may from time to time by order in the Gazette determine to be nuclear fuel for the purposes of this Act; ACT 304 - ATOMIC ENERGY LICENSING ACT 1984 2. Interpretation.