Data / Federal rules / 2025-18768
Approval of American Society of Mechanical Engineers Unconditioned Code Cases
The Nuclear Regulatory Commission published this proposed rule in the Federal Register on September 26, 2025. Comments closed on November 25, 2025.
SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.
What the agency says
The U.S. Nuclear Regulatory Commission (NRC) is proposing to amend its regulations to incorporate by reference a regulatory guide that approves unconditioned code cases published by the American Society of Mechanical Engineers (ASME). This action would allow nuclear power plant applicants and licensees to use the code cases as voluntary alternatives to engineering standards for nuclear power plant components. These standards are set forth in the ASME Boiler and Pressure Vessel Code and ASME Operation and Maintenance of Nuclear Power Plants, which are currently incorporated by reference into the NRC's regulations. The NRC is requesting comments on this proposed rule.
Key facts
- Document number
- 2025-18768
- Type
- Proposed rule
- Action
- Proposed rule
- Agency
- Nuclear Regulatory Commission
- Published
- September 26, 2025
- Comments due
- November 25, 2025
- Dates
- Submit comments on the proposed rule by November 25, 2025. Comments received after this date will be considered if it is practical to do so, but the NRC is able to ensure consideration only for comments received on or before this date.
- Docket
- NRC-2024-0163
- Regulation ID (RIN)
- 3150-AL20
- Code of Federal Regulations
- 10 CFR 50
- Topics
- Administrative practice and procedure; Antitrust; Classified information; Education; Fire prevention; Incorporation by reference; Intergovernmental relations; Nuclear power plants and reactors; Penalties; Radiation protection; Reporting and recordkeeping requirements; Whistleblowing
- Pages
- 3
Other documents from the Nuclear Regulatory Commission
| Document | Type | Published |
|---|---|---|
| NRC Reviews of Reactor Designs Previously Authorized by U.S. Department of Energy or Department of War 2026-21801 | Final rule | Oct 26 |
| Irradiated Fuel Reprocessing Plants 2026-21690 | Proposed rule | Oct 23 |
| Fee Schedules; Fee Recovery for Fiscal Year 2026 C1-2026-12067 | Final rule | Oct 19 |
| AP1000 Design Certification Renewal 2026-21031 | Proposed rule | Oct 14 |
| AP1000 Design Certification Renewal 2026-21030 | Final rule | Oct 14 |
| Exemptions From Materials Licensing 2026-20336 | Final rule | Oct 5 |
| Exemptions From Materials Licensing 2026-20335 | Proposed rule | Oct 5 |
| State of Indiana: Discontinuance of Certain Commission Regulatory Authority Within the State, Notice of Agreement Between the Nuclear Regulatory Commission and the State of Indiana 2026-20276 | Final rule | Oct 2 |
Everything from the Nuclear Regulatory Commission · Rules on administrative practice and procedure · Rules on antitrust · Rules on classified information · Published in September 2025
Read from the Federal Register API, last updated 2026-10-24. 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.