Byproduct Materials Sub-Arena

Byproduct materials comprise one of two sub-arenas that the staff of the U.S. Nuclear Regulatory Commission (NRC) identified in considering which areas of the materials safety arena to target for greater use of risk information. This page summarizes the following aspects of this sub-arena with expanding menus:

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List of Risk-Informed and Performance-Based Activities

This list shows the ongoing licensing initiatives, projects, and activities that the staff of the U.S. Nuclear Regulatory Commission (NRC) has targeted for greater use of risk information in the Byproduct Materials Sub-Arena within the Materials Safety Arena:

Decommissioning Financial Assurance for Sealed and Unsealed Radioactive Materials Rulemaking (10 CFR Part 30, Appendix B)

The NRC is conducting a rulemaking to revise Appendix B, "Quantities of Licensed Material Requiring Labeling," to Part 30, "Rules of General Applicability to Domestic Licensing of Byproduct Material," which is used to determine the amount of decommissioning financial assurance for a given radionuclide with a half-life greater than 120 days. The rulemaking would revise Appendix B to include more risk-informed values for the existing radionuclides and would add naturally occurring and accelerator-produced radioactive material (NARM) radionuclides that are not currently listed in the Appendix. Additionally, the NRC would remove all radionuclides with a half-life of 120 days or less from the revised Appendix B because these radionuclides are not considered when applying decommissioning financial assurance requirements. Finally, to clarify the purpose of Appendix B, the NRC would change the title of the appendix to reflect its use in determining decommissioning financial assurance requirements. This action is being taken in response to a petition for rulemaking submitted by the Organization of Agreement States.

For more information see Planned Rulemaking Activities - Rule webpage.

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Inspection Manual Chapter 2800, "Materials Inspection Program"

double arrow head (chevron) pointing downward FY 2023

No Update

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Animal Release Following Veterinary Treatment

double arrow head (chevron) pointing downward FY 2023

The NRC deferred the issuance of its rulemaking plan to establish a framework for release of animals administered radioactive material as part of veterinary procedures to address other high priority rulemaking efforts. The NRC is undertaking the addition of animal phantoms to existing codes to assist in the development of regulatory guidance.

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Page Last Reviewed/Updated Monday, February 12, 2024