Nuclear Regulatory Commission-Controlled Materials Law and Legal Definition

According to 41 CFR 101-42.001 [Title 41 -- Public Contracts and Property Management; Subtitle C -- Federal Property Management Regulations System; Chapter 101 -- Federal Property Management Regulations; Subchapter H -- Utilization and Disposal; Part 101-42 -- Utilization and Disposal of Hazardous Materials and Certain Categories of Property], Nuclear Regulatory Commission-controlled materials means “those materials the possession, use, and transfer of which are subject to the regulatory controls of the Nuclear Regulatory Commission (NRC) pursuant to the Energy Reorganization Act of 1974. The materials are defined as follows:

(a) Byproduct materials means any radioactive material (except special nuclear material) yielded in or made radioactive by exposure to the radiation incident to the process of producing or utilizing special nuclear material.

(b) Source material means uranium or thorium, or any combination thereof, in any physical or chemical form, or ores which contain by weight one-twentieth of one percent (0.05%) or more of uranium, thorium, or any combination thereof. Source material does not include special nuclear material.

(c) Special nuclear material means plutonium, uranium 233, uranium enriched in the isotope 233 or in the isotope 235, any other materials which the NRC, pursuant to the Atomic Energy Act of 1954, including any amendments thereto, determines to be special nuclear material, or any material artificially enriched by any of the foregoing, but does not include source material.”