Rule lifecycle · RIN:3150-AL49

Modernizing NRC Regulations for Byproduct Material Use

Nuclear Regulatory Commission — observed across 2 documents over 3 days. Use the source documents below before deciding whether this affects your business.

In plain English

The NRC is updating its rules for how companies can use radioactive byproduct materials in medical, industrial, and research work. Small-business owners using radioactive materials need to review the changes when they're finalized to make sure your licenses and procedures stay compliant with the new standards.

First seen

May 18, 2026

Last seen

May 21, 2026

Latest stage

Proposed Rule

PRORULE → RULE

Effective on

Thursday, May 21, 2026

Stage timeline

  1. Proposed·May 18, 2026·91 FR 28916

    Modernizing NRC Regulations for Byproduct Material Use

    comments close Jul 2, 2026#2026-09877

  2. Proposed·May 21, 2026·91 FR 29922

    Modernizing NRC Regulations for Byproduct Material Use

    effective May 21, 2026#2026-10224