Federal regulatory authorities consider certain quantities of radioactive materials to be exempt from regulatory authority. In other words, one may possess up to the specified amount of a particular radionuclide without having to secure a radioactive materials license. However, this exemption does not apply to quantities that may be commercially distributed. (Press the “Position Papers” category in the “References and Resources” section above to review several USNRC position papers on this topic.)
The following is the listing of exempt quantities, in units of “microcuries”, promulgated by the U. S. Nuclear Regulatory Commission in Title 10, Code of Federal Regulations, Part 30. Agreement States may have additional requirements for the use of these materials or interpret these regulations in a different manner. Please contact Plexus-NSD for guidance on state-specific requirements.
Antimony
Arsenic
Barium
Bismuth
Bromine
Cadmium
Calcium
Carbon
Cerium
Cesium
Chlorine
Chromium
Cobalt
Copper
Dysprosium
Erbium
Europium
Fluorine
Gadolinium
Gallium
Germanium
Gold
Hafnium
Holmium
Hydrogen
Indium
Iodine
Iridium
Iron
Krypton
Lanthanum
Lutetium
Manganese
Mercury
Molybdenum
Neodynium
Nickel
Niobium
Osmium
Palladium
Phosphorus
Platinum
Polonium
Potassium
Praseodymium
Promethium
Rhenium
Rhodium
Rubidium
Ruthenium
Samarium
Scandium
Selenium
Silicon
Silver
Sodium
Strontium
Sulphur
Tantalum
Technetium
Tellurium
Terbium
Thallium
Thulium
Tin
Tungsten
Vanadium
Xenon
Ytterbium
Yttrium
Zinc
Zirconium
All others except alpha-emitting byproduct material – 0.1
Alpha-emitting byproduct material – 0