Data / Federal rules / 2026-01494
Approval of American Society of Mechanical Engineers Unconditioned Code Cases
The Nuclear Regulatory Commission published this final rule in the Federal Register on January 27, 2026. It took effect on January 26, 2026.
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What the agency says
The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of January 26, 2026, for the direct final rule that was published in the Federal Register on September 26, 2025. This direct final rule amended the regulations to incorporate by reference a regulatory guide that approved unconditioned code cases published by the American Society of Mechanical Engineers. This action allows nuclear power plant applicants and licensees to use the code cases as voluntary alternatives to engineering standards for nuclear power plant components.
Key facts
- Document number
- 2026-01494
- Type
- Final rule
- Action
- Direct final rule; confirmation of effective date
- Agency
- Nuclear Regulatory Commission
- Published
- January 27, 2026
- Takes effect
- January 26, 2026
- Dates
- The effective date of January 26, 2026, for the direct final rule published September 26, 2025 (90 FR 46319), is confirmed. The incorporation by reference of certain material listed in the regulation is approved by the Director of the Federal Register as of January 26, 2026.
- Docket
- NRC-2024-0163
- Regulation ID (RIN)
- 3150-AL20
- Code of Federal Regulations
- 10 CFR 50
- Pages
- 2
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Everything from the Nuclear Regulatory Commission · Published in January 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.