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The U.S. Nuclear Regulatory Commission is in the process of rescinding or revising guidance and policies posted on this webpage in accordance with Executive Order 14151 Ending Radical and Wasteful Government DEI Programs and Preferencing, and Executive Order 14168 Defending Women From Gender Ideology Extremism and Restoring Biological Truth to the Federal Government. In the interim, any previously issued diversity, equity, inclusion, or gender-related guidance on this webpage should be considered rescinded that is inconsistent with these Executive Orders.

Home Nuclear Security Radioactive Material Security

Background on Radiation and Material

On this page:

Legislation and Reports

Uses of Radioactive Material

Medical, Industrial, and Academic Uses of Nuclear Material. Definitions, questions and answers, and more.

Byproduct Material page. Definition and regulation.

Backgrounder on Byproduct Material. More on the categories, uses, and their regulation.

Radiation Safety

Radiation Protection. Expanded definition of radiation, description of sources, health effects, frequently asked questions, and information for radiation workers.

Radiation Protection (Environmental Protection Agency). Understanding radiation, awareness, health, glossary, and more.

Fact Sheet on Biological Effects of Radiation

Health Physics Society. Definitions, Ask the experts (Radiation Q&A), and more…

To learn more about uses of material, see our Medical, Industrial, and Academic Uses of Nuclear Materials web page.

Radiological Emergencies

Page Last Reviewed/Updated Wednesday, December 02, 2020